Source: Shutterstock Cathie Wood's investment management firm, ARK Invest, is on the growing list of US-based firms that filed for spot Bitcoin exchange-traded funds (ETFs) approval with the SEC. The investment manager, alongside crypto asset manager 21Shares, filed an amended spot BTC ETF proposal and added a surveillance sharing agreement. This amendment followed almost two weeks after BlackRock's spot Bitcoin ETF filing that generated a loud buzz within the crypto ecosystem. ARK’s Revised Spot BTC ETF Proposal Could Meet SEC Requirements BlackRock’s ETF filing contained the surveillance agreement, implying that ARK and 21Shares added the latest revision to match BlackRock’s. ARK Invest and 21Shares submitted their spot Bitcoin ETF proposal to the SEC in April, nearly two months before BlackRock’s application came along. Theoretically, the duration and amendment move could place the firms ahead of BlackRock in obtaining the SEC’s approval....