ETFs vs Individual Stocks in Institutional Portfolios

When you browse 13F filings on 13F Insight, you'll notice something striking: some of the world's largest institutional investors hold billions of dollars in ETFs like SPY, IVV, and VOO. Others — managing equally massive portfolios — hold zero ETFs entirely. This isn't random. The mix of ETFs versus individual stocks in a 13F filing is one of the clearest signals of what kind of investor you're looking at.

Why ETFs Appear in 13F Filings

ETFs (Exchange-Traded Funds) are baskets of securities that trade on exchanges like individual stocks. Because they're U.S.-listed equity instruments, they must be reported on Form 13F just like any other stock holding.

The most common ETFs in institutional 13F filings include:

ETF	Tracks	Why Institutions Hold It
SPY	S&P 500	Most liquid ETF in the world — used for broad market exposure, hedging, and cash management
IVV	S&P 500	Lower expense ratio than SPY, preferred by buy-and-hold allocators
VOO	S&P 500	Vanguard's ultra-low-cost S&P 500 tracker, popular with wealth managers
QQQ	Nasdaq 100	Tech-heavy exposure, used for growth tilts
IWM	Russell 2000	Small-cap exposure, often used for tactical allocation

What the ETF-to-Stock Ratio Reveals

The proportion of ETFs in a filer's portfolio reveals their investment approach more reliably than almost any other metric. Here's the spectrum:

Heavy ETF Holders: Wealth Managers & Banks

Filers with 20–50% of their portfolio in ETFs are typically wealth management platforms or bank trust departments. They're building diversified portfolios for thousands of individual clients using ETFs as efficient building blocks.

Example: Bank of America holds roughly $26 billion in Vanguard ETFs alone — about 2% of its massive $1.37 trillion portfolio. But look deeper, and you'll see billions more in sector ETFs, bond ETFs, and index trackers scattered throughout its holdings. This reflects Merrill Lynch's advisory business building model portfolios for retail clients.

Moderate ETF Holders: Diversified Asset Managers

Filers with 5–15% in ETFs often use them strategically — for cash equitization (parking money in index ETFs while deciding where to invest it), hedging (shorting SPY against long positions), or tactical allocation (quickly gaining or reducing market exposure).

Royal Bank of Canada holds IVV ($19.5B), SPY ($17.5B), and VOO ($13.4B) alongside thousands of individual stock positions. This dual approach serves both their wealth advisory clients (ETFs) and their active management teams (individual stocks).

Zero-ETF Holders: Pure Stock Pickers

Some of the most respected institutional investors hold no ETFs whatsoever. Every single position is a deliberately chosen individual stock. This signals genuine active management — the fund has a view on every name in its portfolio.

A striking example from our data: Dimensional Fund Advisors holds 13,709 individual stock positions totaling $477 billion — and not a single ETF. Every position reflects their factor-based investment philosophy. When a filer avoids ETFs entirely, it means they believe their own stock selection adds more value than any index can provide.

Why This Matters for Your Research

Understanding a filer's ETF usage changes how you interpret their other positions:

1. Assessing Conviction Signals

A new stock position from a zero-ETF filer carries more weight than the same position from a heavy-ETF wealth manager. The pure stock picker chose that name deliberately. The wealth manager might have added it as part of a model portfolio update affecting thousands of client accounts.

2. Understanding Position Changes

When a heavy-ETF holder suddenly cuts their SPY position by 50%, it doesn't necessarily mean they're bearish on the market. They might be transitioning client assets from passive to active strategies, or simply rebalancing across different index products (moving from SPY to IVV for lower fees, for instance).

Conversely, when a zero-ETF filer like Capital International Investors — which manages $638 billion almost entirely in individual stocks — exits a position, that's a clear, intentional sell decision worth noting.

3. Filtering for Active Management

If you're trying to find genuine stock-picking signals — institutional “smart money” bets — you'll get cleaner results by focusing on filers with low or zero ETF exposure. Their entire portfolio represents active choices, so every change is meaningful.

How to Spot ETF Holdings on 13F Insight

ETF positions show up in a filer's holdings list just like individual stocks. You can identify them by:

• Issuer name — ETFs are issued by trusts or funds, not corporations. Look for names like “SPDR S&P 500 ETF TR,” “ISHARES TR,” or “VANGUARD INDEX FDS”
• Familiar tickers — SPY, IVV, VOO, QQQ, IWM, EEM, HYG, TLT, and GLD are among the most commonly held
• Position size patterns — Wealth managers often hold ETFs as their largest positions, sometimes exceeding their largest individual stock holdings

On a filer's page, scanning the top 10 holdings for ETF names gives you an instant read on their investment style before you look at anything else.

Real-World Patterns from Q4 2025 Data

Across the top 20 institutional filers by AUM on 13F Insight, the ETF usage spectrum is wide:

Filer Type	Typical ETF Exposure	Example
Index/Factor fund	0%	Dimensional Fund Advisors — 13,709 stocks, zero ETFs
Active stock picker	0–2%	Capital International Investors — 454 individual positions
Options/derivatives dealer	5–20%	Susquehanna — $77B in SPY alone, primarily for options hedging
Diversified bank	5–15%	Royal Bank of Canada — IVV + SPY + VOO = $50B+
Wealth manager	10–30%	Charles Schwab — builds model portfolios for 35M accounts

Common Misconceptions

“ETF holdings aren't interesting”

They can be. When Goldman Sachs holds billions in SPY, that's partly for client accounts and partly for their trading desk's hedging operations. Changes in ETF position sizes can signal shifts in how institutions view broad market risk. A sudden build in TLT (long-term treasury bond ETF) might signal a flight to safety.

“Holding ETFs means the fund is passive”

Not necessarily. Many active managers hold ETFs tactically — buying SPY for quick market exposure while they research individual stock picks, or holding sector ETFs to express a macro view. The context matters more than the presence of ETFs.

“You should ignore filers with lots of ETFs”

Don't ignore them entirely. Their individual stock picks are still informative. If a wealth manager with 40% ETF exposure also holds a concentrated 3% position in a mid-cap stock, that's notable — it's a deliberate active bet layered on top of their passive core.

Frequently Asked Questions

Do ETF holdings overlap with individual stock holdings?

Yes, and this is important to understand. If a filer holds both SPY and Apple (AAPL) directly, they effectively have double exposure to Apple — once through the ETF and once through the direct holding. 13F filings don't consolidate this overlap, so the reported portfolio weight of Apple would understate the filer's true exposure.

Can I see which filers hold specific ETFs?

Yes. Just search for the ETF on 13F Insight like you would any stock. For example, the SPY page shows all institutional holders of the S&P 500 ETF, ranked by position size. It's a useful way to identify the biggest passive and hedging players.

Why do three different S&P 500 ETFs (SPY, IVV, VOO) exist?

They track the same index but differ in structure, expense ratio, and issuer. SPY (State Street) is the oldest and most liquid, making it preferred for trading and hedging. IVV (BlackRock/iShares) and VOO (Vanguard) have lower expense ratios, making them preferred for long-term holding. Different institutional clients prefer different products based on their needs.

Do hedge funds use ETFs?

Some do, primarily for hedging. A long/short equity hedge fund might short SPY as a market hedge against its long stock positions. Others use sector ETFs to quickly express a view (e.g., buying XLF for financial sector exposure). But pure stock-picking hedge funds typically avoid ETFs entirely.