Wall Street is pushing the exchange-traded fund format into nearly every corner of finance. Investors can now find ETFs offering Bitcoin exposure, two- or three-times the daily performance of a stock, private assets, and contracts linked to elections or economic data.
The ETF began as a low-cost way to own a diversified market portfolio. It has since become a distribution system for investments that once required a futures account, private placement, crypto exchange, or careful review of a structured-note prospectus.
The Securities and Exchange Commission is examining how far that system can expand. In a June 30 request for public comment, the agency identified crypto assets, commodities, leveraged products, single-stock ETFs, blockchain-based investments, private assets, and event contracts. Comments are due Aug. 31.
The review extends beyond any individual application. The SEC is assessing whether its existing rules give staff sufficient time and authority to evaluate products whose economic behavior can differ substantially from the diversified funds investors traditionally associate with ETFs.
According to the SEC’s concept release, assets in U.S. ETFs grew from more than $4 trillion at the end of 2019 to more than $12 trillion at the end of 2025. Over the same period, the number of products increased from nearly 1,900 to more than 4,600.
The ETF ticker can hide the product’s real risks
An ETF packages a portfolio into shares that trade throughout the day on an exchange. Investors can buy that exposure through the same brokerage account they use for ordinary stocks.
Through the creation-and-redemption process, authorized participants exchange large blocks of ETF shares for the underlying basket or its cash equivalent. This mechanism helps keep the market price close to the portfolio’s net asset value.
What began as operational infrastructure became a retail investing habit. ETFs offer intraday trading, transparent pricing, broad brokerage access and, in many structures, more favorable tax treatment than comparable mutual funds.
Asset managers also gained products that could be placed in model portfolios and trading applications. Each successful launch encouraged sponsors to put increasingly specialized exposures behind the same familiar interface.
The regulatory framework developed around the original ETF model. Early funds needed individual exemptive orders for features such as exchange trading and in-kind redemptions, which did not fit neatly within rules designed for open-end mutual funds.
In 2019, the SEC adopted Rule 6c-11. The rule allows qualifying ETFs registered under the Investment Company Act of 1940 to operate without seeking a separate order for every launch, provided they satisfy conditions involving portfolio information, trading data and the arbitrage mechanism.
Rule 6c-11 made ETF launches faster and more standardized, helping the product count more than double by the end of 2025. A plain index fund, a concentrated thematic portfolio and a derivatives strategy can now look nearly identical on a brokerage screen, even though their holdings, valuation methods and potential losses may be very different.
The term ETF describes the container, not necessarily the investment inside it.
The common brokerage screen also obscures important legal distinctions. Many stock and bond ETFs are registered investment companies under the 1940 Act, while spot Bitcoin and Ethereum products commonly use commodity-trust structures registered under the Securities Act of 1933.
Exchange-traded notes represent another category. They are unsecured debt obligations whose returns depend on the issuer’s promise. Brokerage platforms may display all three structures side by side under a broad exchange-traded product label.
Those legal categories affect custody, board oversight, diversification, borrowing, derivatives use, valuation and the remedies available if an issuer or service provider fails. A familiar ticker makes an exposure easier to buy, but it does not remove those underlying differences. That is why the SEC is examining the conditions attached to the ETF wrapper as closely as the portfolio itself.
Crypto expanded the ETF model
Spot crypto products became a turning point because investors viewed an exchange listing as a bridge between an unfamiliar asset and an established brokerage account.
The SEC’s approval of spot Bitcoin products in 2024 gave advisers and institutions access to a regulated trading venue, standardized disclosures and conventional custody relationships. The agency emphasized that its approval was not an endorsement of Bitcoin itself.
In practice, the distinction between legal approval and perceived legitimacy became harder to see as the ETF menu expanded.
Many investors see an ETF ticker at a major broker and assume that the underlying exposure has passed through a common regulatory filter. Yet one product may hold a broad equity basket while another owns a volatile commodity or rolls derivatives that can diverge from a reference asset. Crypto demonstrated the commercial value of that familiarity.
Sponsors have since applied the same distribution model to staking, options overlays, token products promising a multiple of an asset’s daily move and baskets of digital assets. Each structure may serve a specific investment purpose, while introducing its own custody, valuation, trading-hours and concentration risks.
Crypto markets trade around the clock, but ETF shares trade during exchange hours. The creation process must bridge those different trading schedules when prices move sharply overnight or over a weekend.
Event-contract funds push the ETF model into even less familiar territory. They tie returns to election results, economic releases or other defined events while packaging the exposure in shares that trade like ordinary funds.
CryptoSlate identified more than two dozen event-linked ETF proposals, illustrating how quickly a niche contract market could reach retail brokerage accounts once an ETF provides the distribution channel.
The regulatory challenge is based on how the product functions. An event contract may trade on an exchange overseen by the Commodity Futures Trading Commission, while the fund shares and related disclosures fall within the SEC’s jurisdiction.
That can place the risks across several rulebooks. Regulators may need to examine how a contract settles, who provides prices, what happens when trading is halted and whether the fund can meet redemptions near the event date.
Those questions apply differently across the categories covered by the SEC’s concept release. A private-asset fund may face stale valuations and limited exit opportunities. A single-stock leveraged product may reset daily and compound away from its stated multiple over longer periods. A token-based product may depend on custody or staking arrangements with no close equivalent in a traditional index fund.
A product-by-product framework could attach conditions to each source of risk more precisely than a single definition of novelty.
The SEC’s ETF approval process faces new pressures
The SEC must also determine whether its filing process gives staff enough time to review unfamiliar structures before they reach the market.
Certain registration statements and post-effective amendments can become effective automatically after a statutory or rule-based waiting period. Some amendments filed under Rule 485 can take effect immediately when they meet specified conditions.
These pathways make routine fund updates and launches more efficient, but they can also carry portfolios that SEC staff have not previously encountered.
SEC Chair Paul Atkins said in May that several sponsors had agreed to delay novel ETF launches, including event-contract products, while the agency evaluated the issues.
A voluntary delay gives staff additional time to assess current filings. A lasting policy could require rule amendments, enhanced disclosure conditions, a separate review process or a clearer boundary around which products qualify for automatic treatment.
Each option carries a cost. Broad restrictions could slow conventional fund launches and give established issuers an advantage over smaller sponsors. A narrow rule could leave staff racing against automatic deadlines whenever a new payoff structure emerges.
The SEC must also protect the arbitrage mechanism that keeps ETF shares close to net asset value. Disclosure alone cannot solve problems created by assets that are too difficult to price or acquire during the creation-and-redemption process.
Crypto issuers have a direct interest in the outcome, even as event contracts draw much of the attention. New staking structures, tokenized securities, multi-asset baskets and products offering daily return multiples could face additional filing requirements depending on how the SEC defines novelty and which safeguards it requires.
A framework focused on custody, valuation, liquidity and payoff complexity could give sponsors a clearer path to market. A wrapper-level restriction, by contrast, could group economically different crypto products together.
The SEC has already published public comment letters and meeting records ahead of the Aug. 31 deadline. After the comment period closes, the agency will need to evaluate the submissions, determine whether its existing authority and disclosure standards are sufficient, and publish any proposed rule amendments through the normal notice-and-comment process.
Existing products and pending applications will continue to provide data on premiums, discounts, trading quality and investor use during that review.
ETFs conquered Wall Street by making investment exposure easy to distribute. The wrapper has become financial infrastructure for nearly every kind of portfolio. A brokerage customer can move from an S&P 500 fund to Bitcoin, a two-times stock position or an election-linked contract with a few taps, even though each investment enters a different economic world.
The SEC now has to decide which exposures require a different regulatory gate before a familiar ticker persuades investors that the existing gate has already done all the work.
