Securities Lending in ETFs

ETF managers can lend securities from the fund’s portfolio to short-sellers, hedge funds, and other borrowers, generating fees that offset the fund’s operating costs and expense-ratio. This securities lending program is a form of embedded revenue that can reduce the effective cost to investors, but it also introduces counterparty and operational risks.

The mechanics of securities lending

When an ETF manager enters a securities-lending programme, it:

1. Selects a subset of the fund’s holdings—typically the most liquid and heavily borrowed stocks (e.g., large-cap common-stock)
2. Transfers those securities to a lending agent (often a custodian bank or dedicated lending operation) on behalf of the fund
3. The lending agent lends the securities to borrowers (typically hedge funds and proprietary trading firms seeking to short-sell) in exchange for a rental fee
4. The fund retains the economic interest in the loaned securities; it continues to receive dividends and retains the right to vote shares
5. The fund and its lending agent split the fee revenue, typically at a 70/30 or 80/20 ratio

For the borrower, securities lending is essential: to short-sell a stock, you must first borrow shares. The lending fee—which can range from 0.5% to several percent per year for hard-to-borrow stocks, or just a few basis points for liquid large-caps—is the cost of that borrowing.

Reducing the effective expense ratio

Many ETFs report a “net expense ratio” that subtracts expected securities-lending revenue. A broad S&P 500 index ETF with a stated gross expense-ratio of 0.04% might report a net expense ratio of 0.02% or even lower if it expects to generate 0.02%+ per year from lending the index constituents. This makes the fund’s actual cost to investors lower than the headline fee.

However, securities-lending revenue is not guaranteed. In periods of low volatility, when short-sellers and hedge funds are less active, lending demand falls and fees collapse. A fund that budgets on steady lending revenue may fall short, leaving the net expense ratio higher than advertised. Conversely, in periods of elevated short-selling and volatility, lending revenue can be surprisingly robust, benefiting the fund beyond expectations.

Which securities are lent

Not all holdings are lent. ETF managers typically lend only:

• Highly liquid, widely traded stocks
• Securities with established lending markets and stable demand
• Positions small enough that lending doesn’t impair the fund’s ability to trade or rebalance

A small-cap or illiquid municipal-bond would rarely be lent; its owner might need to sell quickly, and withdrawing a loan takes time. Index ETFs focused on S&P 500, Nasdaq, or other mega-cap indices can lend freely because the constituents are always in demand and liquid. Emerging-market or high-yield-bond ETFs lend more selectively.

Counterparty and operational risks

Securities lending introduces several risks:

Counterparty risk: If a borrower fails to return the borrowed securities (e.g., if a hedge fund defaults), the fund could suffer a loss. To mitigate this, borrowers post collateral—typically cash or highly liquid securities equal to 100–105% of the value of loaned securities. But collateral can lose value; if a borrower defaults and the collateral depreciates, the fund bears the gap.

Collateral quality: The lending agent holds and invests the collateral (usually in short-term, safe instruments like Treasury bills). If collateral is invested in riskier assets and those assets decline in value, the fund’s cushion shrinks.

Operational risk: Lending involves additional custody, accounting, and reconciliation. If the lending agent loses track of loaned shares or fails to reinvest collateral properly, the fund’s assets could be impaired. Large fund complexes often run dedicated lending operations with rigorous controls, but the risk still exists.

Regulatory requirements and disclosure

In the US, the Securities and Exchange Commission requires ETF prospectuses to disclose securities-lending programmes, including who the lending agent is, how revenue is split, and what collateral requirements are in place. The fund must also report securities-lending revenue in its semi-annual and annual reports.

The Securities and Exchange Commission imposes concentration limits: borrowed securities may not constitute more than a set percentage of fund assets (typically 20–50%, depending on the fund type and strategy). This rule prevents a fund from lending away so much of its portfolio that it can’t meet shareholder redemptions or tracking error targets.

International regulators (such as ESMA in Europe) have similar rules, though European ETFs often have more latitude to lend aggressively, especially in synthetic-etf structures.

Securities lending and index rebalancing

When an index rebalances—such as the S&P 500 reconstituting quarterly—some loaned securities may need to be recalled by the fund so the holdings can be sold. The lending agent recalls the securities from the borrower, who must unwind the short position or source the shares elsewhere. If recall is slow or expensive (e.g., in a tight lending market), the ETF may incur costs or face temporary tracking error.

Well-run lending programmes coordinate recalls in advance and manage them gradually to minimize market impact and cost.

Revenue sharing and transparency

The split of securities-lending fees between the fund and the lending agent is typically 70/30 or 80/20 in favour of the fund. Some large fund complexes (such as BlackRock and Vanguard) operate their own lending agents in-house and capture the full revenue, effectively lowering their net costs.

However, transparency varies. Some ETF factsheets prominently display expected securities-lending revenue; others bury it in the prospectus. Retail investors rarely see itemised securities-lending income on their statements. For the investor concerned about true all-in costs, comparing ETFs on net expense ratio (which includes lending revenue assumptions) is more informative than comparing gross ratios alone.

The tension between lending revenue and fund health

Securities lending creates a subtle misalignment of incentives. The fund manager benefits from higher lending volume and revenue, which lowers the expense-ratio and looks good in performance comparisons. But excessive lending—or lending concentrated in a single hard-to-borrow security—can expose the fund to counterparty or operational risk.

For instance, if a popular “meme stock” or highly shorted security is a fund holding, the lending agent might push aggressively to lend it, generating outsized fees. But if the borrower defaults or recall becomes contentious, the fund could suffer. A fund manager striking the right balance lends opportunistically but conservatively, recognizing that the fund’s first duty is to track its index reliably, not to maximize lending revenue.

Practice across fund families

• BlackRock (iShares): Extensive securities-lending programmes across most broad ETF products. Revenue is often used to bring net expense-ratio well below the gross fee.
• Vanguard: Also has securities-lending programmes but is famously conservative, capping lending concentrations and using conservative collateral reinvestment strategies to protect the fund first.
• Invesco, SPDR, Direxion: All use lending, but scale and intensity vary by ETF type.
• Smaller issuers: Often outsource lending entirely to third-party agents, reducing control and revenue capture.

For a retail investor, the simplest takeaway: a net expense-ratio already incorporates expected lending revenue. Pay attention to the net, not the gross, and understand that securities lending is a normal, regulated, and usually well-controlled feature of modern ETF management.

See also