The iShares Bitcoin Trust ETF is now the top spot Bitcoin fund with $52.6 billion in assets. Each share represents a claim on roughly 0.000568 Bitcoin, though this ratio floats based on daily fees. The fund charges a 0.25% expense ratio. To hold the equivalent of one full Bitcoin, you would need 1,761 shares costing just over $65,000. That price is effectively the same as buying the token directly on an exchange.