CoinVoice recently learned that according to Lookonchain data, 9 ETFs increased their holdings by a total of 2,394 BTC (about 135 million US dollars), including:

Fidelity increased its holdings by 2,077 BTC (about $177 million) and currently holds 170,764 BTC (about $9.2 billion).

Grayscale reduced its holdings by 475 BTC (about 26.8 million US dollars) and currently holds 274,249 BTC (about 15.46 billion US dollars). [Original link]