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Mid‑August 13F Filings Show Divergent Institutional Moves on BlackRock Bitcoin ETF

Delayed quarter‑end disclosures reveal steady Abu Dhabi sovereign holdings with large UBS call‑option increases that complicate reading of institutional flows.

Overview

  • Mid‑August Form 13F filings, which report positions as of June 30, show different institutions responded to the Q2 drawdown in four distinct ways rather than a single coordinated sell‑off.
  • Two Abu Dhabi entities reported unchanged IBIT share counts at quarter‑end, leaving their lower reported values the result of price moves not share sales.
  • Paul Tudor Jones’s Tudor Investment raised direct IBIT shares to 688,529 while cutting reported call‑option equivalents by about 85%, a mix that changes the filing’s appearance without proving a net directional bet.
  • UBS recorded a more than 24‑fold rise in call‑option underlying equivalents to about 1.95 million IBIT shares while modestly raising direct holdings, and Morgan Stanley and JPMorgan showed opposite patterns of external ETF reductions and branded‑wrapper increases.
  • The ETF complex posted roughly $4.89 billion of net outflows in Q2, concentrated in late June, and Form 13F rules that convert long options to underlying‑share equivalents and omit shorts mean the tables show transmission channels rather than definitive net exposure.