Stop Loss Limit Orders are used when one wants to specify a price they'd like to sell at, rather than accepting the current market price. SoFi Invest currently accepts Stop Loss Limit Orders during market hours for whole shares, these are Good 'Til Cancelled (GTC) orders meaning they are good until you cancel them.
Stop Loss Limit Orders at SoFi are ‘All-or-None’ and we will not do a partial fill. This means that your Stop Limit Order will not execute unless there are enough shares to fill the order at that price or better.
At this time SoFi offers Stop Loss Limit Orders for sell trades. You cannot place a Buy Stop Loss Limit Order. Once activated, the order will only be executed at that limit price or higher. This means that the limit price you enter for your Sell Stop Limit Order will be the minimum you are willing to receive per share.
To submit a Stop Loss Limit Order, please refer to the Article: Can you put a stop-loss on a stock? / How do I set up a stop-loss order?