Yesterday, Grayscale's GBTC had a net inflow of $45.7 million, the second largest since its conversion to a BTC spot ETF. This surge in investment follows a period of decline in May, with the largest net inflow recorded at $63 million on May 3rd. Concurrently, Ark Investment's ARKB experienced its largest inflow since last month, at $100 million. These inflows indicate renewed interest in BTC spot ETFs, which provide investors with exposure to the underlying asset without the need for direct ownership or storage.