According to Lookonchain's monitoring, GBTC in Shades of Gray reduced its holdings by 3,780 BTC (worth about $256 million) on March 15 and now holds 383,967 BTC (worth about $26 billion). Nine spot Bitcoin ETFs (including grayscale) increased their holdings by 1,434 BTC (worth about $97.15 million), with BlackRock increasing its holdings by 4,967 BTC (worth about $336 million) and now holding 228,613 BTC (worth about $15.5 billion).