Securities Lending (ETF)
Securities lending within an ETF is the practice of temporarily lending the fund's portfolio holdings to short-sellers and other borrowers in exchange for collateral and a lending fee, with a portion of the fee income returned to the fund and its shareholders — partially or fully offsetting the fund's expense ratio.
When investors short a stock, they must first borrow those shares from an existing owner. ETFs, which hold large pools of equity securities, are natural lenders in this market. An ETF that participates in a securities lending program loans shares from its portfolio to approved borrowers — typically prime brokers acting on behalf of hedge funds and other short-sellers — and receives collateral (usually U.S. Treasury securities or cash) plus a daily lending fee in return. The borrower returns the shares when the loan is terminated, and the ETF reclaims its collateral.
The revenue generated from securities lending can be significant enough to partially or fully offset the fund's gross expense ratio, reducing the effective cost of ownership for investors below the stated fee. The iShares Core S&P 500 ETF (IVV), for example, has historically generated securities lending revenue that offsets a meaningful portion of its already-low expense ratio, contributing to tracking differences that show the fund returning slightly more than the index after stated fees. Vanguard operates a distinctive model in which 100 percent of net securities lending revenue is returned to the fund, while other providers share the revenue between the fund and an affiliated lending agent, with the fund's share varying from roughly 50 to 85 percent depending on the provider.
The collateral management practices of the lending program carry risk implications. Cash collateral is typically reinvested in a collateral pool — often a money market fund or short-term bond portfolio — to generate additional return above the collateral rate. During the 2008 financial crisis, some fund families experienced losses in these cash collateral reinvestment pools when the short-term credit markets froze, creating a mismatch between the liquidity of the collateral investments and the needs of the lending program. Post-crisis reforms led most major ETF providers to use non-cash collateral or highly conservative cash collateral reinvestment guidelines.
SEC rules require ETFs to disclose their securities lending programs in their prospectuses, including the revenue sharing arrangements and the identity of the lending agent if it is an affiliate. Investors evaluating ETFs with similar stated expense ratios should examine whether securities lending income is contributing to tracking difference, as a fund that generates substantial lending revenue may deliver better net performance than a fund with a nominally similar expense ratio but no lending activity.
Not all ETFs participate in securities lending. Some ETF providers opt out entirely or limit lending activity based on their assessment of risk management priorities. For certain categories of funds — such as inverse or leveraged ETFs — securities lending is generally not a feature due to the already-complex derivative structures involved. For long-only index ETFs, securities lending is a well-established and generally low-risk revenue source when properly managed.