BlackRock’s iShares Bitcoin Trust (IBIT) is steadily gaining market share and closing in on Grayscale’s Bitcoin Trust ETF (GBTC), according to data from Dune. On April 17, IBIT recorded its second-lowest daily inflows of $24.9 million, compared to its lowest day of $20.4 million on April 9. Despite the low inflows, IBIT’s current market share of 32.6% is approaching GBTC’s market share of 36.8%, making it the largest spot Bitcoin ETF with $19 billion worth of Bitcoin. However, IBIT still falls short by $2.2 billion, as it currently holds $16.8 billion worth of Bitcoin. IBIT flipping GBTC for the top spot is not impossible, especially considering that GBTC’s Bitcoin holdings decreased by 50% since its first day of trading, from 619,220 BTC to the current 308,105 BTC. BlackRock’s Bitcoin accumulation has slowed down since its record day on March 13, when it saw $866 million worth of net inflows. Nevertheless, its Bitcoin ETF holdings have increased by over 10,200% since its launch, from 2,621 BTC to the current 272,550 BTC. On the other hand, GBTC’s outflows have also decreased since March 19, when it experienced $607 million worth of outflows, with only $79 million on April 17. Cumulative ETF inflows have been slowing down since March, with last week seeing $199 million worth of net inflows, down from $2.58 billion in the week beginning March 11. The slowdown in ETF inflows has also contributed to the subdued Bitcoin price, which fell 10.7% during the previous week and was trading at $62,971 as of 12:30 pm UTC. GBTC has been experiencing a significant sell-off since its launch, which can be attributed to its high trading fee of 1.5%, the highest among all U.S. Bitcoin ETF issuers. In contrast, IBIT has a 0.25% trading fee, while Franklin Templeton’s ETF charges only a 0.19% fee.