However, the time could be appropriate for short-term traders to give PLTD a look. Those who did were rewarded over the past month, as Palantir dipped more than 10%. PLTD attempts to deliver the daily inverse performance of the underlying stock. So if Palantir declines by 1% on a given day, PLTD should rise by that amount. Points to remember: PLTD isn't a long-term investment. Rather, the ETF is best used over short holding periods measured in days. Second, Palantir has not been hospitable to short-sellers, ...