I have never shorted a stock in my life. So I have no personal experience shorting stocks.
I also only have Robinhood broker account, not Interactive Brokers. So I have no experience with IB, other than I expect to eventually get an account, because my research indicates they are the best, or darn close to it.
Yes, this algo shorts stocks.
Because I do not use IB and Robinhood does not allow shorting of stocks, I do not personally test shorting in live trading. So, all I have is what you and others say your experiences are with it in IB.
This verion of the algo is the only one that I have done that shorts stocks. Admittedly it prefers long to short, and ends up with much more long than short.
If, anybody here that has IB, wants to basically take over tweaking this algo, that may be for the best, since I do not have IB.