Trader T posted on social media that bitcoin spot ETFs became increasingly institutionalized in the third quarter. BlackRock IBIT has a total of 639 institutional holders, an increase of 10% month-on-month; institutional holders hold a total of 148 million shares, an increase of 19% month-on-month; Fidelity FBTC has 316 institutional holders, an increase of 4% month-on-month, and institutional holders hold a total of 50.40 million shares, a decrease of 4% month-on-month; Bitwise's BITB has 140 institutional holders, up 0% month-on-month. Institutional holders hold a total of 15.80 million shares, up 7% month-on-month.