By Dan Weil Ark Innovation has sunk 52% year to date, as Wood’s tech companies have slumped–and it’s down 71% from its 2021 peak. Renowned investor Cathie Wood, chief executive of Ark Investment Management, bought shares of a medical imaging equipment producer Wednesday, along with some familiar names. All valuations below are as of Wednesday’s close. Ark Genomic Revolution ETF (ARKG) – Get ARK Genomic Revolution ETF Report purchased 227,499 shares of Butterfly Networks (BFLY) – Get Butterfly Network Inc. Class A Report, the medical-imaging-equipment maker, valued at $768,947. The stock has p…