ARK Invest has decided to stick with its strategy of switching from ProShares Bitcoin Strategy ETF (BITO) to its own spot bitcoin ETF Not too long ago, the ARK Next Generation Internet ETF (ARKW) sold 758,915 shares of BITO for about $15 million, and at the same time, it bought 365,695 shares of ARKB, its in-house bitcoin ETF, for about $15..