Hedge Fund · CIK 0001353316
Jonathan Auerbach
Hound Partners
Jonathan Auerbach runs Hound Partners, a hedge fund overseeing $721.3M in disclosed equity holdings (SEC CIK 0001353316). The latest portfolio (2025Q4) discloses 36 positions across 8 sectors, with the largest positions in CCL, PLTR and NVDA. On a mark-to-market basis the tracked portfolio has returned 10.2% over the past year. OpenStocks tracks 40 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.
Portfolio
$721.29M
Positions
36
Quarter
2025Q4
Filings tracked
40
Biggest winner since filing
ARWRARROWHEAD PHARMACEUTICALS IN
+182.2%
+$14.3M
Biggest loser since filing
RPDRAPID7 INC
-85.3%
−$5.4M
Investment strategy
Jonathan Auerbach is a boutique tilted toward technology names. 46% of the disclosed equity book is in Technology.
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5 sectors18 positions
Top 3 = 25% of book · MSFT, DG, BIO
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Performance
vs SPY40 quarters tracked
Mark-to-market portfolio growth vs SPY benchmark, with AUM and concentration history.
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Options & derivatives
Bullish bets1 option position
Largest: CALL ACHR ($52.4M notional)
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Activity & trades
Quarter-by-quarterLast move 2025Q4
TRIM MHK — and 4 more recent moves.
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Recent transactions
See full activity →
NEW
ALLIANCE LAUNDRY HLDGS INC
+85,000
~$20.35 · 2025Q4
2026-02-17
NEW
ISHARES TR
+2,000
~$684.94 · 2025Q4
2026-02-17
TRIM
G III APPAREL GROUP LTD
−366,905
~$28.96 · 2025Q4
2026-02-17