Why Ark Invest Sees Value Others Don’tAnd then Ark went and bought $21 million worth of it. Ark Invest, the fund Wood built around high-conviction bets on disruptive technology companies, didn’t flinch at the selloff. Ark Invest spent $21 million on Block shares anyway. Frequently Asked Questions How much did Ark Invest spend buying Block shares? Ark Invest purchased $21 million worth of Block shares on Thursday, the same day the stock fell 6.15%.