SARK the most profitable ETF ????

SARK or The Tuttle Capital Short Innovation ETF offers investors access to a short vehicle that may otherwise be difficult to execute on their own.
The fund attempts to achieve the inverse (-1x) of the return of the ARK Innovation ETF for a single day, not for any other period.

So far, so good, from November till February the fund has a return of 68%.

Looking forward to read your opinion about it.