Strategic Borrowing From Passive Investors

We find that short-sellers manage risks by strategically borrowing shares in stocks with significant ownership by passive investors. This practice increases securities lending demand for stocks with substantial passive ownership, resulting in improved price efficiency, higher lending fees, and increased short interest in these stocks. Consistent with the risk mitigation motive, these stocks show reduced risks of unexpected fee hikes and loan recall, longer loan durations, and attract more informed short-sellers. These effects are particularly pronounced in hard-to-borrow stocks where short-sale constraints are binding. Our study suggests that passive investing helps alleviate short-sale constraints by reducing the risks associated with stock borrowing.