On Friday, Cathie Wood’s Ark Invest did a pair trade in cryptocurrency exchange-traded funds. The transaction is significant as it came ahead of the much-awaited Bitcoin (CRYPTO: BTC) halving, which has since taken place. Crypto Transactions: Ark’s ARK Next Generation Internet ETF (NYSE:ARKW) bought 41,068 units of ProShares Ether Strategy ETF (NYSE:EETH) valued at $2.81 million. This was in addition to a purchase worth $2.9 million on Thursday. On the other hand, the fund sold 28,936 units of ProShares Bitcoin Strategy ETF (NYSE:BITO) valued at $813,102. Ark beefed up its holdings of its in-h…