UBS disclosed a sharp increase in its exposure to BlackRock's spot Bitcoin ETF in its latest quarterly filing, with call option exposure on iShares Bitcoin Trust (IBIT) jumping 24-fold to roughly 1.95 million underlying shares, up from just 80,000 shares in the prior quarter. The Swiss bank, which manages more than $7 trillion in assets, filed the report covering the period ending June 30.
UBS also grew its direct IBIT holdings by 12% to 407,890 shares, worth roughly $13.6 million, up from 364,371 shares the previous quarter — though still below the 548,614 shares it held at the end of 2025. At the same time, its put option exposure, a bearish hedge, fell about 53% to 143,300 underlying shares from 303,300, suggesting a shift toward net-bullish positioning on the fund overall.
The filing does not specify what drove the jump in call options, and 13F disclosures don't include strike prices or expiration dates. Possible explanations include dealer hedging, market-making activity, discretionary client portfolios, or proprietary exposure — meaning the headline 24-fold figure can't be read as a straightforward directional bet on Bitcoin's price.
A Broader Wave of Bank Filings
UBS's disclosure fits a pattern showing up across Wall Street's latest 13F filings. JPMorgan reported roughly 10.4 million IBIT shares worth about $355.7 million, up from around $162 million the prior quarter, while Morgan Stanley increased its share count 23% to 16.5 million — though the position's dollar value actually fell to about $549 million from $667 million as Bitcoin's price declined during the quarter. Banco Santander appeared on a Bitcoin ETF shareholder list for the first time, disclosing a $4.31 million stake, while Intesa Sanpaolo cut its IBIT position by 94% over the same period.
Options Activity Reflects a Bigger Market Trend
The options build-up isn't isolated to Bitcoin products. Equity index options have also seen record activity this quarter, with a record 4 million SPX call options changing hands as the S&P 500 topped 7,700 — a reminder that institutional desks have been leaning into options markets broadly, not just around crypto-linked products, as a way to position for further upside while managing downside risk.
What the Filing Doesn't Show
Without strike prices or expiration dates, it's impossible to tell from the 13F alone whether UBS's growing options book represents a genuine bullish conviction on Bitcoin or simply reflects growing client demand for structured products built around IBIT. What is clear is that the divergence between banks — UBS and JPMorgan adding exposure while Intesa Sanpaolo slashed its stake by 94% — shows institutional sentiment on Bitcoin ETFs remains far from uniform even as the asset class matures.
