Two active tech ETFs that invest in disruptive growth stocks, the ARK Innovation ETF (NYSEARCA:ARKK) and the less well-known Spear Alpha ETF (NASDAQ:SPRX), both racked up impressive gains last year.

With just $72.3 million in assets under management (AUM), the Spear Alpha ETF (NASDAQ:SPRX) is tiny and unknown, but with a total return of nearly 90% last year, it’s worthy of more attention. I'm ...