Launched in the U.S. in 1993, ETFs have changed the face of investing over the past two decades. Offering a diverse array of investments at a low cost, these open-ended, index-based funds started out as transparent, liquid, efficient and simple instruments that trade on an exchange like stocks: Borrowing shares to sell short, placing limit or stop-loss orders and buying on margin are all permissible. Although ETFs have some similarities with mutual funds \u2014 both represent professionally managed baskets of securities \u2014 ETFs are characterized by higher liquidity and greater flexibility because they can be bought and sold over the course of a day. Because typical ETFs are less actively managed than mutual funds, they tend to have lower management fees.1<\/sup>\u00a0Moreover, when an investor wants to buy shares of a mutual fund, the process requires an understanding of loads and redemption fees.<\/p>\n ETFs have had a material effect on the way investors access markets. The funds appeal to long-term investors, who use them for index investing, as well as more-active traders with short-term horizons.2<\/sup>\u00a0Compared with mutual funds, ETFs are generally more transparent and tax efficient. Portfolio holdings are disclosed daily, in contrast to mutual funds, which report them quarterly with a month\u2019s lag. Most ETFs are passive index funds with very low turnover \u2014 and hence few realized capital gains. When there are gains, they are rarely distributed due to ETFs\u2019 distinctive creation and redemption mechanism.<\/p>\n The ETF growth story is best captured by looking at both the number of funds in the marketplace and the value of their assets. Figures 1 and 2 show a linearly increasing number of ETFs accompanied by a nonlinear increase in assets. The nonlinear asset growth can be attributed to the popularity of the most liquid ETFs, which have garnered substantial inflows.3<\/sup>\u00a0The funds\u2019 liquidity, based on average daily dollar volume traded, has also grown significantly over the past decade, after a slight lull in the wake of the\u00a02008\u2013\u201909 global financial crisis<\/a>. Starting from about $100 billion in assets in 2000, the global ETF industry had grown to\u00a0$6.35 trillion by the start of this year<\/a>\u00a0and is anticipated to reach $10 trillion in the next three years.4<\/sup><\/p>\n Exchange-traded products have evolved substantially from the simple structures of the first generation. These passive products typically held baskets of stocks or other securities reflecting the composition of the index they were designed to track. Subsequent generations of ETFs were able to replicate the index\u2019s performance by holding a subset of stocks or using swaps or other derivatives. But the rapid growth of the ETF market and the increased variety and complexity of exchange-traded products, including those that incorporate active management strategies or use leverage, have introduced a whole new set of risk factors. The industry\u2019s future growth is likely to depend on the willingness of investors to accept the added risks and increased complexity of the products, and to embrace the active pursuits of ETF providers.<\/p>\n Exchange-traded funds are the brainchild of the late\u00a0Nathan (Nate) Most<\/a>, a self-described \u201ccommodities man\u201d who came up with the novel idea in the 1980s while heading new product development at the American Stock Exchange.5,6\u00a0\u00a0\u00a0<\/sup>At the time, investors who wanted access to the S&P 500 index had to use open-ended mutual funds, which are bought and sold at net asset value (NAV) and priced only once a day, after the close of trading, following rules dating back to the\u00a0Investment Company Act of 1940<\/a>, known as the 1940 Act.<\/p>\n Most saw a market for an index fund that could be traded throughout the day and used his experience in the commodities industry to develop a mechanism to allow it. The solution was what he called a \u201ccreation unit\u201d \u2014 essentially, a large basket of stocks that institutions can exchange for shares in the fund, similar to the receipts that a warehouse issues to owners of commodities stored there. ETFs are relatively inexpensive to run because only authorized participants (APs) \u2014 typically, large financial institutions \u2014 can create or redeem shares. As ETF shares are in-kind transaction products, no cash is needed to buy or sell them to the fund; because no taxable income is generated during the creation\u2013redemption process (shares are exchanged for the basket of underlying securities), ETFs are more tax efficient than mutual funds.<\/p>\n It took three years for Most to sell AMEX management on his idea and another three years for the Securities and Exchange Commission (SEC) to grant ETFs an exemption from the 1940 Act. In January 1993, AMEX launched the\u00a0SPDR S&P 500 ETF Trust<\/a>\u00a0(SPY) \u2014 known as \u201cSpider\u201d for short \u2014 managed by State Street Global Advisors. Within a few years, other ETFs had appeared.<\/p>\n The first generation of ETFs were plain-vanilla indexing strategies that tracked the returns of a specific market index by holding all the securities in the index. But they weren\u2019t without risk. ETF managers are required to actively rebalance their portfolios regardless of the volatility or liquidity of the market, making it almost impossible for them to track their benchmarks perfectly.7<\/sup>\u00a0To reduce a fund\u2019s tracking error, an ETF manager may lend the underlying securities to hedge funds and other market participants looking to sell the stocks short, creating risk for the ETF investors if the counterparties were to default. First-generation ETFs often used index-linked notes and other derivatives for cash management activities like dividend payments, creating additional\u00a0counterparty risk<\/a>.<\/p>\n Exchange-traded products gained popularity because they targeted both institutional and retail demand for diversification coupled with lower investment and operating costs than traditional index mutual funds, which in the early 1990s had annual management fees as high as 2 percent.7<\/sup>\u00a0Institutional investors embraced ETFs because of the added advantage of easy settlement (compared with swaps), intraday trading capacity and reduced counterparty risk (again, compared with swaps). Retail investors flocked to these products thanks to their lower costs and the ease of trading them through online brokerage platforms.8<\/sup><\/p>\n The mechanism used by first-generation ETFs worked well for large, liquid benchmarks like the S&P 500, but it was difficult to implement for indices whose underlying stocks were less liquid or more expensive to trade. As a result, by the mid-\u201990s, second-generation ETFs eased the requirement to hold the whole array of an index\u2019s securities and instead focused on owning a representative selection that tracked as closely as possible the index\u2019s returns. These ETFs typically use quantitative methods to determine the optimal portfolio to replicate an index\u2019s performance and will often hold the securities that have the largest weights in the benchmark.9<\/sup>\u00a0This generation of ETFs targets low tracking error and low transaction costs.10<\/sup><\/p>\n Second-generation ETFs provided access to international equity markets and to very broad, diversified indices tracking entire economies. In 1996, iShares debuted international ETFs in the U.S., including 17 different country funds spanning the globe from Canada to Japan.<\/p>\n Bond ETFs also developed under this paradigm, but for fixed income ETFs, the replication is a much less exact science. The ETF manager is unlikely to be able to access every bond in the underlying index. Instead, it creates a portfolio of bonds designed to track the duration, quality, maturity and exposure characteristics of the index within reasonably tight bounds. Some bond ETFs were constructed using short positions in various interest rate swaps hedged by long positions in high-yield bonds.<\/p>\n Like their first-generation cousins, second-generation ETFs can experience counterparty credit risk if their managers engage in securities lending or use derivatives for cash management.11\u00a0<\/sup>And although second-generation ETFs attempt to closely mimic the performance of the target index, they are not immune to tracking error risk.<\/p>\n ETFs that track the S&P 500 are naturally capitalization weighted and have Fama\u2013French factor loadings (which show the relationship of different variables to the underlying Fama-French factors). Funds with different weighting schemes \u2014 equal weighted, revenue weighted, dividend weighted \u2014 started to appear on the landscape in the early 2000s. Their performance, risk and volatility profiles are different from cap-weighted ETFs because the varied weighting schemes are exposed to different factors, depending on their construction. Equal weighting, for example, will typically shift an ETF toward smaller companies, while dividend weighting will generally tilt it toward value stocks.<\/p>\n As the ETF industry developed, providers introduced many new products that were far from plain vanilla. These exchange-traded products (ETPs) employ a variety of different structures, including exchange-traded derivative contracts (ETDCs), exchange-traded commodities (ETCs) and ETNs. ETDCs are standardized derivatives contracts that trade on an exchange; many exotic ETF products use this structure. ETCs track the performance of commodities markets. Barclays Bank introduced ETNs in 2006 to allow retail investors to invest in commodities, currencies and other hard-to-access markets. They are senior, unsecured, unsubordinated debt securities issued by a bank and listed on an exchange, and they can be either collateralized or uncollateralized. Credit risk is partially hedged for collateralized ETNs, but uncollateralized ETNs are fully exposed to counterparty risk.<\/p>\n These third-generation ETFs have one thing in common: They employ swaps or other derivatives to replicate the performance of an index rather than investing in its underlying securities. The manager of these synthetic ETFs typically replicates the index\u2019s performance by entering into a swap contract with a financial institution, often a bank. The swap counterparty agrees to pay the index return, including dividends, to the ETF in exchange for a swap fee and the return on a basket of securities held by the ETF as collateral. The collateral securities do not have to be the same as the securities in the index (in fact, they often are not). This structure is known as an unfunded swap (Figure 4).<\/p>\n Synthetic ETFs can also be created using funded swaps. In a funded swap, the counterparty deposits the collateral securities with an independent trustee to hold on the ETF\u2019s behalf. The collateral in that account is pledged to the ETF and is technically its property. The funded swap structure came into vogue in the wake of the global financial crisis to protect ETFs from the risk of their counterparties going bankrupt.<\/p>\n Proponents of synthetic ETFs claim the funds do a better job of tracking an index\u2019s\u00a0performance than first- and second-generation ETFs and provide a competitive offering for investors seeking access to remote-reach markets, less liquid benchmarks or difficult-to-execute strategies that would be costly for traditional ETFs to operate.12<\/sup><\/p>\n Critics of synthetic funds point to several potential dangers, including\u00a0counterparty risk<\/a>, collateral risk,\u00a0liquidity risk<\/a>\u00a0and conflicts of interest. A 2018 report on exchange-traded funds by the European Central Bank found that \u201cwhile counterparties are typically connected with many ETFs, most ETFs rely on a single counterparty.\u201d13<\/sup>\u00a0In many cases, counterparties are connected to ETF issuers through ownership links to the same parent bank. In addition, investors may not be aware of the complexity of the relationships between ETFs and their counterparties.14<\/sup><\/p>\n The first three generations of ETFs are passively managed, tracking both large indices and those that are less well known. In March 2008, Bear Stearns launched the first actively managed ETF \u2014 a current yield fund called Triple-Y that aimed to generate higher returns than a money market fund by investing in a diversified basket of fixed income securities.15<\/sup>\u00a0The fund was rebranded under the J.P. Morgan moniker after the bank acquired struggling Bear Stearns that same month, on the eve of the 2008\u2013\u201909 financial crisis.<\/p>\n Today there are nearly 400 actively managed ETFs in the U.S., representing approximately $125 billion in assets.16<\/sup>\u00a0PIMCO\u2019s\u00a0Enhanced Short Maturity Active Exchange-Traded Fund\u00a0<\/a>(MINT), with nearly $14 billion in assets, is the largest actively managed ETF, mainly holding corporate debt with less than one year in remaining maturity. Similarly, the $13 billion\u00a0JPMorgan Ultra-Short Income ETF<\/a>\u00a0(JPST) seeks to maintain a duration of one year or less by investing in investment grade, U.S. dollar\u2013denominated fixed, variable and floating-rate debt. Such active bond ETFs appeal to investors seeking relative safety but higher yields than those offered by money market instruments or long-term Treasury securities. Until recently, actively managed ETFs were largely restricted to such niche segments.17<\/sup><\/p>\n Most actively managed ETFs are as transparent as traditional ETFs: They publish online a full list of their holdings on a daily basis. That transparency, however, can reveal a manager\u2019s strategy and create the risk of arbitrage by other investors trying to front-run its positions. To combat that, some ETF providers have gotten the SEC to loosen the regulations and approve several actively managed, nontransparent exchange-traded funds (ANTs). These new actively managed ETFs disclose their holdings monthly or quarterly, or share a proxy for their holdings; they are not required to disclose them on a daily basis. In the spring of 2020, American Century launched the first actively managed nontransparent ETFs: the\u00a0American Century Focused Dynamic Growth ETF<\/a>\u00a0(FDG) and the\u00a0American Century Focused Large Cap Value ETF<\/a>\u00a0(FLV).18<\/sup><\/p>\n The appeal of actively managed ETFs is that they trade like a stock but are structured like a mutual fund. While passively managed ETFs are designed to replicate an index, actively managed ETFs aim to outperform a benchmark return. To put it differently, passively managed ETFs offer the same exposure as the market, known as beta, while actively managed ETFs focus on generating higher returns than a benchmark, known as alpha. Not surprisingly, actively managed ETFs typically have higher costs than their passive counterparts.<\/p>\n In the U.S., ETFs and mutual funds come under the purview of the 1940 Act. Going back to the era of Nate Most, ETFs have needed to obtain exemptions from certain stipulations in the law that require mutual funds to be purchased and sold only at net asset value at the end of the business day. Since 1993, however, the SEC has issued more than 300 exemptive orders for ETFs, allowing them to be traded throughout the day on secondary markets like the\u00a0New York Stock Exchange<\/a>\u00a0(NYSE).<\/p>\n When ETFs redeem shares through authorized participants, they provide the basket of underlying securities in kind, without selling in the open market and redeeming in cash. There is further tax efficiency because the ETFs can choose to redeem securities that have a lower cost basis, increasing the average cost basis of the shares held by the ETF and thus reducing future capital gains.<\/p>\n When the basket of securities used in the creation or redemption process is in the same proportion as the overall ETF portfolio, it is called a \u201cpro rata slice\u201d basket. Older ETF firms have had the ability to create and redeem shares using non\u2013pro rata slice, or \u201ccustom,\u201d baskets, which don\u2019t exactly match the full ETF portfolio in composition. This has several benefits for the ETF provider, including improved fund efficiency and reduced internal trading costs, as well as increased efficiency for APs, leading to tighter spreads. Younger ETF firms, however, did not have this flexibility, creating an uneven competitive landscape with their older rivals.19<\/sup><\/p>\n On September 26, 2019,\u00a0the SEC approved a new rule<\/a>\u00a0designed to modernize ETF regulation \u201cby establishing a clear and consistent framework for the vast majority of ETFs.\u201d20\u00a0<\/sup>The rule allows open-end ETFs to operate without obtaining an exemption from the 1940 Act as long as they provide daily portfolio transparency on their websites. ETFs are permitted to use custom baskets of securities that \u201cdo not reflect a pro-rata representation of the fund\u2019s portfolio\u201d or do not exactly match the full ETF portfolio in composition. The website disclosure is intended to inform investors about the cost of investing in an ETF and the efficiency of its arbitrage process. According to the SEC, the new rule is meant \u201cto level the playing field\u201d by allowing all ETFs that rely on it to create and redeem shares using custom baskets, as well as to \u201cprotect ETF investors.\u201d21<\/sup><\/p>\n The SEC has also approved various systems that can be used to introduce actively managed ETFs that are not fully transparent.22<\/sup>\u00a0In May 2019, the agency granted an exemption from the 1940 Act to\u00a0Precidian Investments<\/a>\u2019 nontransparent ETF structure,\u00a0ActiveShares<\/a>. The Precidian structure adds a new participant, the authorized participant representative (APR), to the creation and redemption process.23,24<\/sup>\u00a0The ETF sponsor hires the APR, which contracts with the AP to trade the basket of securities on its behalf. The sponsor also hires a trusted agent to provide real-time pricing data every second to the consolidated tape that exchanges use to report trades and quotes. Precidian worked with State Street and other ETF providers to develop the ActiveShares model.<\/p>\n In December 2019, the SEC approved exemptive relief for\u00a0Blue Tractor Group\u2019s Shielded Alpha<\/a>\u00a0ETF wrapper, which allows actively managed portfolio strategies to operate within an ETF structure without the risk of front-running or free-riding. The Shielded Alpha wrapper uses \u201cproprietary math to generate daily a creation basket\u201d while ensuring that \u201can advisor\u2019s alpha generation and portfolio trading execution remain fully opaque,\u201d according to Blue Tractor.25<\/sup>\u00a0The company insists that a Shielded Alpha wrapper is highly transparent and will promote \u201chighly efficient primary and secondary market pricing and trading.\u201d<\/p>\n Structures such as ActiveShares and Shielded Alpha \u2014 as well as systems employed by Fidelity Investments, Natixis Investment Managers and T. Rowe Price that use proxy portfolios in creation and redemption baskets \u2014 enable firms to construct actively managed funds that protect managers\u2019 intellectual property while retaining such ETF benefits as tax efficiency and tradability in secondary markets using real-time pricing data.<\/p>\n At the same time, the use of artificial intelligence and machine learning is helping to launch a new class of exchange-traded products. Smart beta initiatives have expanded beyond the basic factors they first covered, and more exotic bond ETFs are being launched. Some of these exotic ETFs are very different from normal index-tracking funds: the FLAG\u2013Forensic Accounting Long\u2013Short ETF (which looks for accounting red flags), the\u00a0AlphaClone Alternative Alpha ETF<\/a>\u00a0(which tracks U.S. equities with large exposure among top-performing hedge funds, based on publicly disclosed positions),\u00a0Credit Suisse X-Links Gold Shares Covered Call ETN<\/a>\u00a0(which invests in the SPDR Gold Shares ETF, which trades under the symbol GLD, a physical gold ETF and one-month call options on GLD) and the\u00a0Invesco S&P Spin-Off ETF<\/a>\u00a0(which tracks an index of U.S. equities that have spun off from their parent companies).<\/p>\n Many notable exotic ETFs that at one time garnered substantial assets no longer exist, including the Credit Suisse X-Links Merger Arbitrage Liquid Index ETN (which ceased trading in June 2016), the UBS ETRACS Daily Long\u2013Short VIX ETN (which closed in August 2016) and the U.S. Equity High Volatility Put Write Index Fund (which was liquidated in June 2017). Of course, many normal ETFs also ceased to exist during the past decade, due to a shortage of invested assets or other issues. Of the 530 ETFs trading on U.S. exchanges in 2009, only 380 remain today.<\/p>\n Liquidity risk is an issue for ETFs of all shapes and sizes. The secondary markets where ETFs are bought and sold typically use the average volume of shares traded as a liquidity indicator. ETF creation and redemption in the primary market can affect this liquidity by changing the shares outstanding in the secondary market. The ease of creation and redemption by the APs depends on the liquidity of the underlying instruments. Therefore, the ETF shares\u2019 liquidity in the secondary market is indirectly dependent on the liquidity of the underlying instruments \u2014 and less so on the dollar volume of the ETF shares traded.<\/p>\n At any time, a fraction of registered APs will be actively participating in the arbitrage process to keep ETF premiums or discounts to a minimum. If all the APs were to step away from an ETF for a short period, that ETF could act like a closed-end fund and trade at a premium or discount to the NAV. A case in point is the \u201cflash crash\u201d on Monday, August 24, 2015. That morning, the S&P 500 index dropped 5 percent within a few minutes of starting trading, at the same time that many NYSE stocks had a delayed opening because of a lack of bids, making it impossible for APs to establish the fair value of ETFs. Some major U.S. ETFs experienced a 50 percent deviation from NAV as many market makers stepped away from the ETF arbitrage process to minimize risk in what seemed like an irrational period in the market.26,27<\/sup>\u00a0High frequency trading orders exacerbated the situation and contributed to some of the strong short-term downward momentum. Stop-loss market orders from investors also kicked in, helping to prolong and intensify the crash.<\/p>\n Although ETFs did not cause the flash crash, some structural issues in their reopening mechanism affected their response to it. Reopening procedures were not coordinated among exchanges, resulting in different halting prices and periods at different exchanges. When trading in many of their underlying stocks halted, ETFs could not find NAVs that reflected the fair value of their holdings.<\/p>\n Regulators around the world are increasingly concerned that a rapid increase in market stress or a wave of selling could cause a breakdown on the market-making side of ETFs.28<\/sup>\u00a0After all, APs are not legally obligated to perform market making, and in a high-stress environment they could step away or liquidate ETF units at deep discounts. If liquidity of the underlying assets were to suddenly dry up, this risk could be priced into ETF quotes. To deal with this danger, ETFs track liquidity of their assets in addition to performance, especially in less liquid fixed income markets.<\/p>\n At the same time, the ETF market has grown to trillions of dollars in assets during a period of relative calm and has been tested only a few times by a high level of sustained market volatility. During the March 2020 market sell-off, some prominent corporate bond ETFs were trading at a 5 percent discount to NAV before the Federal Reserve offered assurances that it would include corporate bond ETFs in its liquidity operations.<\/p>\n Systemic risk could rise as a result of the popular practice among money managers of using bond ETFs as cash substitutes. During a market sell-off, it is not clear how easily these ETFs could be converted to cash. When fixed income money managers face client withdrawals from their non-ETF products, they might be forced to redeem distressed ETF shares for cash conversion. In such situations, price decoupling due to liquidity spread could put pressure on these institutions, increasing the risk of a broad contagion effect.<\/p>\n ETFs have exhibited tremendous growth over the past decade, most of it fueled by passively managed liquid products. The ETF market received an additional boost from recent changes in the U.S. regulatory environment that reduced barriers to entry and improved competition. And while both institutional and retail investors may use these exotic ETFs to fill gaps in their asset allocation and get around constraints, it is imperative that they fully understand the mechanics and risks underlying the particular ETFs they are trading.<\/p>\n <\/p>\n Michael Kozlov<\/strong><\/span> is a Senior Executive Research Director at WorldQuant and has a PhD in theoretical particle physics from Tel Aviv University.<\/em><\/p>\n Ashish Kulkarni<\/strong><\/span>\u00a0is a Vice President, Research, at WorldQuant and has a master\u2019s in information systems from MIT and an MS in molecular dynamics from Penn State University.<\/em><\/p>\n Rohan Joshi<\/strong><\/span>\u00a0is a Regional Research Director at WorldQuant and has a postgraduate diploma in management from the Indian Institute of Management, Ahmedabad.<\/em><\/p>\n Xin Li<\/strong><\/span>\u00a0is a Vice President, Research, at WorldQuant and has a master\u2019s in computer science\u00a0from Tsinghua University.<\/em><\/p>\n Sopio Bitsadze<\/strong><\/span>\u00a0<\/strong>is an Intern at WorldQuant as part of the IFC\u2013Milken Institute Capital Markets Program and has a master\u2019s in economics\u00a0from Tbilisi State University.<\/em><\/p>\n","endnotes":" Thought Leadership articles are prepared by and are the property of WorldQuant, LLC, and are being made available for informational and educational purposes only. This article is not intended to relate to any specific investment strategy or product, nor does this article constitute investment advice or convey an offer to sell, or the solicitation of an offer to buy, any securities or other financial products. In addition, the information contained in any article is not intended to provide, and should not be relied upon for, investment, accounting, legal or tax advice. WorldQuant makes no warranties or representations, express or implied, regarding the accuracy or adequacy of any information, and you accept all risks in relying on such information. The views expressed herein are solely those of WorldQuant as of the date of this article and are subject to change without notice. No assurances can be given that any aims, assumptions, expectations and\/or goals described in this article will be realized or that the activities described in the article did or will continue at all or in the same manner as they were conducted during the period covered by this article. WorldQuant does not undertake to advise you of any changes in the views expressed herein. WorldQuant and its affiliates are involved in a wide range of securities trading and investment activities, and may have a significant financial interest in one or more securities or financial products discussed in the articles.<\/p>\n","ideas_panel":{"heading":"Keep reading","subheading":"","articles":[{"ID":680,"post_author":"5","post_date":"2020-03-20 19:21:47","post_date_gmt":"2020-03-20 19:21:47","post_content":"","post_title":"The Quiet Revolution of Lease Accounting","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"the-quiet-revolution-of-lease-accounting","to_ping":"","pinged":"","post_modified":"2022-04-25 22:22:25","post_modified_gmt":"2022-04-25 22:22:25","post_content_filtered":"","post_parent":0,"guid":"https:\/\/wdqnt.wpengine.com\/?post_type=idea&p=680","menu_order":0,"post_type":"idea","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":617,"post_author":"5","post_date":"2019-09-10 16:27:43","post_date_gmt":"2019-09-10 16:27:43","post_content":"","post_title":"Unraveling Time Series with Machine Learning","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"unraveling-time-series-with-machine-learning","to_ping":"","pinged":"","post_modified":"2022-04-25 01:07:26","post_modified_gmt":"2022-04-25 01:07:26","post_content_filtered":"","post_parent":0,"guid":"https:\/\/wdqnt.wpengine.com\/?post_type=idea&p=617","menu_order":0,"post_type":"idea","post_mime_type":"","comment_count":"0","filter":"raw"},{"ID":697,"post_author":"5","post_date":"2018-12-26 20:50:07","post_date_gmt":"2018-12-26 20:50:07","post_content":"","post_title":"The Evolution of ![\"Charts](\"https:\/\/www.worldquant.com\/wp-content\/uploads\/2022\/04\/The-ETF-Market-Preparing-Fig-1-2-01.png\")
<\/p>\nFirst-Generation ETFs<\/h3>\n
Second-Generation ETFs<\/h3>\n
![\"Chart](\"https:\/\/www.worldquant.com\/wp-content\/uploads\/2022\/04\/The-ETF-Market-Preparing-Fig-3-Web-01.png\")
<\/div>\nThird-Generation ETFs<\/h3>\n
![\"Diagram](\"https:\/\/www.worldquant.com\/wp-content\/uploads\/2022\/04\/The-ETF-Market-Preparing-Fig-4-and-5-Web-01.png\")
<\/div>\nFourth-Generation ETFs<\/h3>\n
The Future Evolution of ETFs<\/h3>\n
Risks as ETFs Get More Exotic<\/h3>\n
Conclusion<\/h3>\n
\n
Market Microstructure","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"informed-vs-uninformed-the-evolution-of-market-microstructure","to_ping":"","pinged":"","post_modified":"2025-11-24 18:13:48","post_modified_gmt":"2025-11-24 18:13:48","post_content_filtered":"","post_parent":0,"guid":"https:\/\/wdqnt.wpengine.com\/?post_type=idea&p=697","menu_order":0,"post_type":"idea","post_mime_type":"","comment_count":"0","filter":"raw"}],"see_more_link":""},"pdf_file":false,"article_format":"standard"},"yoast_head":"\n