History of ETFs: How a Simple Idea Became a $10 Trillion Industry
An exchange-traded fund (ETF) is a pooled investment fund that trades on a stock exchange like a regular share. Since the first U.S. ETF launched in 1993, the industry has grown to over $10 trillion in assets — fundamentally reshaping how individuals and institutions invest.
Before ETFs: The Problem They Solved
Before ETFs, investors who wanted diversified market exposure had two main options: buy individual stocks (expensive and time-consuming) or purchase mutual funds (which only trade once daily at NAV, have high minimums, and often charge steep fees). There was no way to buy a diversified basket of stocks and trade it throughout the day like a single share.
The idea of a tradeable index fund had been floating around since the 1970s, when John Bogle launched the first index fund at Vanguard. But Bogle’s fund was a traditional mutual fund — it couldn’t be traded intraday.
Timeline of ETF History
| Year | Event | Significance |
|---|---|---|
| 1990 | Toronto Index Participation Shares (TIPs) | First ETF-like product, launched on the Toronto Stock Exchange |
| 1993 | SPDR S&P 500 ETF (SPY) launches | First U.S. ETF — now the world’s largest with $500B+ in assets |
| 1996 | iShares (originally WEBS) launches | First international ETFs — gave U.S. investors access to foreign markets |
| 1998 | Sector SPDRs launch | First sector-specific ETFs tracking S&P 500 sectors |
| 2002 | First bond ETF (iShares) | Extended ETFs beyond equities into fixed income |
| 2004 | GLD (Gold ETF) launches | First commodity ETF — made gold investing accessible to everyone |
| 2006 | First leveraged and inverse ETFs | ProShares launched leveraged and inverse products |
| 2015 | ETF assets surpass $3 trillion | Institutional adoption accelerated growth |
| 2019 | SEC approves active semi-transparent ETFs | Allowed active managers to enter the ETF space without full daily disclosure |
| 2024 | Bitcoin spot ETFs approved | SEC approved 11 spot Bitcoin ETFs — largest ETF launch in history by inflows |
The Birth of SPY (1993)
On January 22, 1993, State Street Global Advisors launched the SPDR S&P 500 ETF Trust (ticker: SPY) on the American Stock Exchange. SPY tracked the S&P 500 index and could be bought and sold throughout the trading day, just like a stock.
SPY was actually born out of a crisis response. After the 1987 Black Monday crash, the SEC encouraged the development of market-wide trading products that could improve liquidity. The idea was that a basket product would help stabilize markets during periods of stress.
SPY grew slowly at first — it took years to gain traction. But by 2024, it had become the world’s largest ETF with over $500 billion in assets and regularly trades over $30 billion daily.
The ETF Explosion: 2000s-Present
What started as a single S&P 500 tracker has expanded into an ecosystem of over 3,000 U.S. ETFs covering virtually every asset class, strategy, and theme imaginable:
- Bond ETFs: Treasury, corporate, municipal, high-yield — the entire fixed income universe.
- Sector ETFs: Technology, healthcare, energy, financials — precise sector exposure.
- International ETFs: Developed markets, emerging markets, single-country funds.
- Thematic ETFs: AI, clean energy, cybersecurity, cannabis — niche themes.
- Dividend ETFs: High-yield, dividend growth, aristocrat strategies.
- Crypto ETFs: Bitcoin and Ethereum spot ETFs approved in 2024.
Why ETFs Won
| Feature | ETFs | Mutual Funds |
|---|---|---|
| Trading | Intraday, like a stock | Once daily at market close |
| Expense Ratios | Often 0.03%-0.20% | Often 0.50%-1.50% |
| Tax Efficiency | In-kind creation/redemption minimizes capital gains | Must distribute capital gains annually |
| Minimums | One share (or fractional) | Often $1,000-$3,000 |
| Transparency | Holdings disclosed daily | Holdings disclosed quarterly |
Not all ETFs are created equal. Stick with funds that have high liquidity, low expense ratios, and large assets under management. Niche and thematic ETFs often carry higher fees and thin trading volume. For core portfolio holdings, broad market ETFs like those tracking the S&P 500 remain the gold standard.
Key Takeaways
- The first U.S. ETF (SPY) launched in 1993 — born partly from the regulatory response to the 1987 crash.
- ETFs solved key mutual fund problems: intraday trading, lower fees, better tax efficiency, and lower minimums.
- The industry has grown from one fund to over 3,000 U.S. ETFs with $10+ trillion in assets.
- ETFs now cover every major asset class: stocks, bonds, commodities, real estate, and even cryptocurrency.
- The 2024 approval of spot Bitcoin ETFs marked the latest milestone in ETF innovation.
Frequently Asked Questions
What was the first ETF?
The first ETF-like product was the Toronto Index Participation Shares (TIPs), launched in 1990 on the Toronto Stock Exchange. The first U.S. ETF was the SPDR S&P 500 ETF Trust (SPY), launched on January 22, 1993, by State Street Global Advisors.
How are ETFs different from mutual funds?
ETFs trade on exchanges throughout the day like stocks, while mutual funds only trade once daily at their net asset value (NAV). ETFs typically have lower expense ratios, better tax efficiency due to their in-kind creation/redemption mechanism, and no minimum investment beyond the share price. For a detailed comparison, see our ETF vs. Mutual Fund guide.
Why did ETFs become so popular?
ETFs offered a combination of benefits that no other product matched: the diversification of mutual funds, the tradability of stocks, rock-bottom fees, tax efficiency, and full transparency. The rise of discount brokers and commission-free trading further accelerated adoption by eliminating the cost barrier to buying ETFs.
Are actively managed ETFs a new thing?
Active ETFs have existed since 2008, but they gained real momentum after 2019 when the SEC approved semi-transparent structures that let managers avoid daily disclosure of their full holdings. Major firms like Fidelity, JPMorgan, and Capital Group have since launched active ETF versions of popular mutual fund strategies.
What are the biggest ETFs in the world?
The largest ETFs by assets under management are SPY (SPDR S&P 500), IVV (iShares Core S&P 500), VOO (Vanguard S&P 500), VTI (Vanguard Total Stock Market), and QQQ (Invesco Nasdaq 100). These five funds alone hold well over $2 trillion in combined assets.