Bitcoin spot ETFs experienced a net inflow of 12,142 BTC this week, according to CryptoQuant analyst Darkfost. Despite the inflows, ETF holders remain at a loss, with an average cost basis of $82,247 per Bitcoin. The trend of inflows into Bitcoin ETFs has shown significant improvement since March, with trading volumes reaching $4.7 billion, nearing the spot market's $6.2 billion. This indicates a strong market interest in Bitcoin ETFs, despite the current loss position of holders.