WetEV said:
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Yes. The person that lent the stock usually doesn't know that it was lent. Do you keep physical stock certificates, or just keep your stock at your brokerage account? It is usual for brokerage agreements (not all, but most) to allow the brokerage to lend your stock to someone to short sell without telling you. Read the fine print.
I don't know about other brokerages, but mine has to ask me first. They recently did actually with TSLA. Seems stocks for shorting are in high demand.
While I refused as I don't like helping people gamble, especially betting on failure, Musk found a better way. Use the shorts to help pay off the government loan
And very good advice, reading the small print is always a good idea.