What is Equity Lending?
Equity Lending is a service that allows you to lend your stocks and ETFs to other market participants. The market is very often looking into borrowing certain stocks for hedging or short selling. Once you apply for an equity lending, you will earn interests on the lent stocks for all the duration of the loan. But the stocks are still yours and you can sell them at any time.
When you enable Stock Lending, you still assume the risk of the market value of any stocks/ETFs lent out. So, if the price of your lent-out stock gains or declines, that will be reflected in your account value, just as it would be if the stocks were not lent out.