Definition
Securities lending is the practice of a fund temporarily lending out some of the stocks or bonds it holds — usually to broker-dealers whose clients want to sell those securities short — in exchange for a fee. The fund still owns the economic exposure: the loan is collateralized, the borrower must return identical securities on demand, and the fund keeps collecting the value of any dividends or interest paid while the shares are out on loan.
The mechanics are conservative by design. The borrower posts collateral worth 102% to 105% of the loaned securities' value — typically 102% for domestic securities and 105% for international ones — and that collateral is marked to market daily. If the loaned shares rise in price, the borrower must top up the collateral the next day. The collateral is usually cash or high-quality government securities, and U.S. mutual funds and ETFs generally operate under a regulatory guideline limiting loans to about one-third of total assets.
Why would anyone pay to borrow a stock? Mostly to sell it short: a short seller must deliver shares they don't own, so they borrow them — and the harder a stock is to locate, the higher the lending fee it commands.
For the fund's shareholders, the result is a quiet extra income stream. It doesn't show up as yield; it flows into the fund's NAV as revenue, partially — and occasionally fully — offsetting the fund's expense ratio.
Why It Matters
If you have ever noticed an index fund trailing its benchmark by *less* than its expense ratio — or even edging ahead of the index — securities lending is usually the reason. A fund charging 0.05% that earns 0.03% from lending has a true all-in cost of roughly 0.02%. In high-demand corners of the market, such as small-cap indexes, lending revenue can exceed the fee entirely. This is one of the levers covered in how index funds track their benchmarks, and it directly shrinks a fund's tracking error.
For income investors, this matters for three reasons.
First, the sticker fee is not the whole cost picture. Two funds with identical expense ratios can have different real-world costs once lending revenue is netted in. The fund's annual report discloses securities-lending income, and the gap between a fund's return and its benchmark's return is the honest bottom line.
Second, lending revenue is structural, not magic. It scales with how in-demand the fund's holdings are among short sellers. A broad S&P 500 fund like VOO holds mostly easy-to-borrow mega-caps, so its lending income is modest. Small-cap, micro-cap, and some international and high-yield bond portfolios hold scarcer, harder-to-borrow securities and can earn several times more.
Third, it is a risk decision made on your behalf. Lending is not free money — it introduces counterparty and collateral-reinvestment risks (covered honestly below). The safeguards have held up well, but "well managed" and "risk-free" are not the same thing, and the details live in the prospectus.
Who Keeps the Revenue?
Not all lending income reaches shareholders. Gross lending revenue is split among up to three parties: the fund (that's you), the lending agent who runs the program, and in some arrangements the fund's manager. The split varies widely by issuer:
- Some issuers return essentially all net lending revenue to the fund after paying the agent's operating costs, so shareholders capture nearly the full benefit.
- Others route lending through an affiliated lending agent that keeps a percentage of the revenue as its fee — perfectly legal and disclosed, but it means a slice of the income generated by *your* assets goes to the manager rather than the fund.
There is no single industry-standard split, and arrangements change, so don't rely on reputation — check the fund's prospectus (Statement of Additional Information) and annual report. The annual report discloses the lending income the fund actually received, and the SAI describes the fee split. Between two funds tracking the same index at the same fee, the one whose shareholders keep more of the lending revenue has a genuine, if small, structural edge.
Example
All numbers below are illustrative, chosen to show the mechanics — real figures vary by fund and by year. Consider two index ETFs, each judged on its *net* cost of ownership:
| Fund type (illustrative) | Expense ratio | Lending revenue to fund | Net cost of ownership |
|---|---|---|---|
| S&P 500 index fund | 0.03% (3 bps) | 0.01% (1 bp) | 0.02% (2 bps) |
| Small-cap index fund | 0.06% (6 bps) | 0.08% (8 bps) | −0.02% (−2 bps) |
The arithmetic: the S&P 500 fund charges 3 basis points and earns back 1, so its true cost is 3 − 1 = 2 bps — $2 a year per $10,000 invested instead of $3. The small-cap fund charges 6 bps but its harder-to-borrow holdings earn 8 bps of lending revenue, so its net cost is 6 − 8 = −2 bps: the fund *adds* about $2 per $10,000 each year, and can plausibly finish a year slightly ahead of its own index.
Why the difference? Short-seller demand. Shares of the largest S&P 500 companies are cheap to borrow, so lending them pays little. Small-cap and heavily shorted names are scarce, command real borrow fees, and a small-cap index fund holds hundreds of them. The same logic gives international and bond funds — a broad bond fund like BND lends too — their own modest revenue streams, while a dividend fund like SCHD, holding mostly liquid large-caps, earns comparatively little.
Key takeaway: compare funds on their *net* result — expense ratio minus lending revenue, as revealed by actual performance versus the benchmark — not on the fee tag alone.
The Risks, Honestly
Securities lending is often described as low-risk, and the modern safeguards are real. But "low-risk" earned its qualifier the hard way. Three risks deserve plain language:
Borrower default. The borrower could fail and not return the shares. This is the risk the 102–105% collateral exists to cover: the fund seizes the collateral and buys replacement shares in the market. Because collateral is marked to market daily and exceeds the loan's value, the fund is protected unless the security's price gaps up faster than collateral can be topped up *and* the borrower fails at the same moment. Many lending agents add a further backstop by indemnifying funds against borrower default. Historically, actual losses from defaults have been rare.
Cash-collateral reinvestment risk — 2008's lesson. This is the one that has actually burned investors. Cash collateral doesn't sit idle; it is reinvested to earn a return, typically in money-market-style vehicles. In the run-up to 2008, some lending programs stretched for extra yield by putting collateral into longer-dated or structured instruments. When credit markets froze, some of those investments lost value or became illiquid — turning a "safe" side business into real losses and lockups for the lenders. The lesson stuck: reputable programs now keep collateral reinvestment short-dated and conservative. But the risk lives in the *reinvestment*, not the loan itself, and it is the first thing to check in a fund's disclosures.
Operational risk. Loans must be recalled when the fund needs to sell a holding, vote a proxy, or capture a dividend. A well-run agent handles this smoothly; a sloppy one causes settlement friction. This risk is small but nonzero, and it is one reason lending is capped at a fraction of the portfolio. Notably, lending does not interfere with the ETF's creation and redemption machinery — funds manage loan recalls around ordinary flows.
A Tax Wrinkle for Dividend Investors
Here is the detail most relevant to income investors. When shares are out on loan over an ex-dividend date, the lender doesn't receive the actual dividend — the borrower (or whoever holds the shares) does. Instead, the lender receives a substitute payment "in lieu of" the dividend: a cash payment of equal amount from the borrower.
The catch is tax treatment. A payment in lieu is not a dividend, so it can never be a qualified dividend taxed at the lower long-term capital-gains rates — it is ordinary income. The same wrinkle can hit individual investors directly: if you hold shares in a margin account, your broker may lend them out, and a payment in lieu on your 1099 is taxed as ordinary income even if the underlying dividend would have qualified.
In practice, funds manage this actively. Many recall loaned shares before ex-dividend dates — especially on high-dividend holdings, where the tax cost of a substitute payment outweighs the lending fee — and some agreements require the borrower to gross up the payment so the fund is made economically whole. So the drag on a typical ETF shareholder is usually small. But the mechanism is worth knowing, both when reading a fund's tax disclosures and when deciding whether to enable share lending in your own brokerage account. (This is educational background, not tax advice.)
Common Mistakes
- Judging a fund by its expense ratio alone. Lending revenue can offset part or all of the fee. The honest comparison is the fund's actual return versus its benchmark — see expense ratio and index replication.
- Assuming all lending revenue reaches shareholders. Fee splits with the lending agent or manager vary by issuer. The prospectus and annual report show who keeps what.
- Treating securities lending as risk-free. Borrower default is well collateralized, but cash-collateral *reinvestment* losses have happened — most visibly around 2008.
- Confusing collateral with a guarantee. 102–105% collateral marked daily is strong protection, not a legal promise that no loss is possible.
- Ignoring payments in lieu of dividends. Whether at the fund level or in your own margin account, substitute payments are ordinary income, never qualified.
- Extrapolating one year's lending income forward. Borrow demand swings with short interest; a fund that earned 8 bps last year may earn 3 bps next year.
FAQ
Is securities lending risky for ETF investors?
The risk is real but modest and well-managed at reputable issuers. Borrower default is covered by 102–105% collateral marked to market daily, often plus agent indemnification, and actual default losses have been rare. The more consequential historical risk is cash-collateral *reinvestment* — some programs took losses in 2008 by reaching for yield with collateral. Modern programs invest collateral conservatively, but the details are disclosed in each fund's prospectus.
How much do ETFs earn from securities lending?
It depends almost entirely on what the fund holds. Broad large-cap funds typically earn only a basis point or two, because mega-cap shares are cheap to borrow. Small-cap, micro-cap, and some international and high-yield bond funds can earn several basis points — occasionally more than their expense ratio, letting the fund modestly beat its own index after fees. The annual report discloses the actual dollars earned each year.
What are payments in lieu of dividends?
When shares are on loan over an ex-dividend date, the lender receives a cash substitute payment from the borrower equal to the dividend, rather than the dividend itself. For tax purposes it is ordinary income, not a qualified dividend. Funds usually recall shares before ex-dates on dividend-heavy holdings or require the borrower to make them whole, so the practical impact on ETF shareholders is generally small.
Do all ETFs lend their securities?
No, but most large index ETFs do — it is a standard, disclosed practice that benefits shareholders when run conservatively. Some funds lend aggressively (up to the roughly one-third-of-assets guideline), others lend sparingly or not at all. The prospectus states whether a fund may lend, and the annual report shows how much it actually earned.
Who keeps the money a fund earns from lending?
Gross revenue is split among the fund, the lending agent, and sometimes the fund's manager, and the split varies by issuer. Some pass essentially all net revenue to the fund's shareholders; others route lending through an affiliated agent that retains a disclosed percentage. There is no universal standard — the fund's Statement of Additional Information describes the arrangement.
Where can I see how much my fund earns from securities lending?
Two places. The fund's annual report discloses securities-lending income received during the year, and the Statement of Additional Information describes the program's structure, collateral policy, and fee split. Indirectly, a fund that trails its index by less than its expense ratio is almost certainly earning lending revenue that offsets part of the fee.