U.S. spot Bitcoin ETFs saw a total net inflow of $225 million on March 3, led by strong demand for BlackRock’s IBIT despite outflows from Fidelity’s FBTC.The flows highlight continued institutional interest in Bitcoin investment products even as capital rotates between funds.BlackRock’s IBIT Dominates ETF InflowsThe iShares Bitcoin Trust (IBIT), issued by BlackRock, recorded the largest inflow among Bitcoin ETFs.Daily inflow: $322 millionCumulative net inflows: $586 millionIBIT continues to attract the majority of institutional capital entering the U.S. Bitcoin ETF market.Valkyrie’s BRRR Records Modest InflowsThe Valkyrie Bitcoin Fund (BRRR) ranked second for daily inflows.Daily inflow: $11.57 millionCumulative net inflows: $11.57 millionAlthough smaller in scale, BRRR has begun attracting fresh capital alongside larger ETF issuers.Fidelity’s FBTC Sees Largest Daily OutflowThe Fidelity Wise Origin Bitcoin Fund (FBTC) recorded the largest redemption among Bitcoin ETFs.Daily outflow: $89.29 millionCumulative net inflows: $5.50 millionThese outflows partially offset inflows from other funds, resulting in the net $225 million inflow across all U.S. spot Bitcoin ETFs.Bitcoin ETF Market OverviewAccording to SoSoValue data:Total net asset value: $87.58 billionETF share of Bitcoin’s market capitalization: 6.42%Cumulative historical net inflows: $55.48 billionThe data shows that Bitcoin ETFs now represent a significant portion of institutional exposure to BTC.Institutional Demand Remains StrongDespite outflows from certain funds, strong inflows into products like IBIT suggest institutional investors continue allocating capital to Bitcoin ETFs.The shift in flows across issuers also reflects increasing competition among ETF providers for investor demand.