Q2 13F: Harvard, Tudor, UBS, and Abu Dhabi are all adding BTC
Every mid-August, 13F filings are released in a concentrated burst. This year, the Bitcoin ETF space feels more like an “institutional main course” than any quarter in 2025. The batch as of June 30 has just come in: the four players represent different fund personalities, but they’re all pressing the baseline bet on BTC. Is institutional allocation logic changing? Let’s compare the four moves.
Harvard: stop reducing—implicitly bullish
After two consecutive quarters of sharp de-risking, the Harvard endowment fund paused its trims in Q2—down 21% in Q4 last year and again down 43% in Q1 this year—holding steady in Q2 with 3,044,612 shares of IBIT, about $101.4 million. Out of its $4.26 billion portfolio, IBIT ranks 11th at 2.4%. Even more notable: in the same reporting scope, it also holds $171.2 million in gold ETFs and $0 in ETH ETFs—meaning its gold exposure is 1.69x its BTC exposure. Quote from @NodeWire: “Harvard PAUSED its Bitcoin ETF selling”—it wasn’t a change in direction, but a change in timing.
Paul Tudor Jones: cut the options “caps,” lift the ETF position
Tudor Investment’s Q2 IBIT direct holdings rose +18.9% to 688,529 shares, $22.9 million—but still remain 91.4% lower than the peak at the end of 2024 (8.05 million shares). Meanwhile, it cut IBIT call options by 85.2% from 998,000 shares to 148,000 shares, while put options fell slightly by 1.4% to 715,000 shares.
UBS: step up 24x with call options
UBS, a $7 trillion asset manager, went in the opposite direction from Tudor: its IBIT call option holdings jumped 24x from 80,000 shares to 1.95 million shares, and its direct holdings rose by 12%. In other words, in Q2 UBS didn’t just hold the spot ETF longer—it amplified exposure via options leverage. This reads more like a “trading bet” than a “core allocation.”
Abu Dhabi: the heaviest in real, physical money
The two Abu Dhabi sovereign funds made their moves with the biggest weight. On Friday, Mubadala disclosed $490 million in IBIT holdings, ranking second in its U.S. portfolio; the Abu Dhabi Investment Council held $273.6 million. Together, about $764 million—@BSCNews headline “Abu Dhabi's wealth funds sat on $764M in Bitcoin through the dip.” They built positions while BTC was still at the 58,000 trough, before it turned upward—not after making new highs.
$BTC #IBIT #13F