Put - Buy To Open

: To protect an existing long stock position against downside risk. This acts as "insurance," allowing the holder to sell their shares at the strike price even if the market price crashes. Buy to Open vs Buy to Close in Options: Explained | SoFi

A order is used to establish a new long position in a put option. This transaction gives you the right, but not the obligation, to sell an underlying asset at a specific strike price before a set expiration date. Core Objectives buy to open put

: To profit from a predicted decline in a stock's price. As the stock price falls below the strike price, the value of the put option generally increases. : To protect an existing long stock position