BlackRock’s iShares Bitcoin Trust has experienced its biggest inflows in two weeks, as traders have allocated to US Bitcoin Exchange-Traded Funds (ETFs), to grab the rocketing cryptocurrency.
IBIT’s net inflows on May 21, 2005, reached $530.6 Million. This is the highest single-day inflow since May 5, when it received $531.2 millions. according Farside Investors. It hasn’t seen an outflow from the ETF since April 9.
IBIT has amassed more than 10 times as much Bitcoin in a single day (BTCThe same day, it mined 4,931 BTC compared to just 450 BTC.
IBIT experienced its biggest volume day since the beginning of January. according Trader T. has an ETF Tracking X Account.
“Given trading volume today, expect these inflow numbers to increase,” said Nate Geraci is the president of ETF Store.
Total inflows across all eleven spot ETFs were $607.1 million. The Fidelity Smart Origin Bitcoin Fund (FBTC), with a $23.5-million inflow, was the second highest inflow for the day.
Related: BlackRock’s Bitcoin ETF posts $356 million inflows, marking the longest streak of 2025
Bloomberg ETF analyst Eric Balchunas called The ETF Inflows are a “classic feeding frenzy” Bitcoin’s price surge, which saw it reach almost $112,000 on May 22, early trading.
Balchunas noted that ETF trading volume peaked in January around Bitcoin’s all-time highest. “All the Bitcoin ETFs are elevated, most are gonna see 2x their average flows incoming,” He said.

Bitcoin’s new high was the catalyst for the big ETF volume and inflow day. above $110,000 Late on May 2, it continued its rally and reached a high of $111 897 on Coinbase. according TradingView.
Bitcoin ETFs continue to pile up
Jeff Mei told Cointelegraph, in a Cointelegraph note, that the operations chief of BTSE’s crypto exchange, Jeff Mei, believes investors should be more cautious. “crowding into Bitcoin ETFs,” The net flow of funds into the country was $3.6 Billion in May.
“We believe this trend will continue as long as companies continue to tap public markets for more capital,” He added. “This could even accelerate if the Fed decides to cut interest rates in the coming months.”
Jupiter Zheng, HashKey Capital partner, anticipated more volatility Cointelegraph has said that Bitcoin will break above $110,000 once it reaches this level. “entering uncharted price discovery territory, while unstable geopolitical and macroeconomic factors lead investors to consider the long-term value of Bitcoin.”
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Source: cointelegraph.com

