Hedge Fund · CIK 0001103804
Andreas Halvorsen
Viking Global
Andreas Halvorsen runs Viking Global, a hedge fund overseeing $37.68B in disclosed equity holdings (SEC CIK 0001103804). The latest 13F filing (2025Q4) discloses 76 positions across 8 sectors, with the largest positions in MSFT, PNC and TSM. On a mark-to-market basis the tracked portfolio has returned 12.0% over the past year. OpenStocks tracks 40 consecutive 13F filings for this manager — every position change, new entry, and exit is logged below.
Portfolio
$37.68B
Positions
76
Quarter
2025Q4
Filings tracked
40
Biggest winner since filing
TSMTAIWAN SEMICONDUCTOR MFG LTD
+166.7%
+$983.3M
Biggest loser since filing
ADPTADAPTIVE BIOTECHNOLOGIES COR
-70.8%
−$1.03B
Investment strategy
Andreas Halvorsen is a large fund. Disclosed equity book is between $10B and $100B.
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<iframe src="https://openstocks.me/embed/stock/BAC" width="100%" height="480" frameborder="0" loading="lazy" title="BAC chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>Holdings
9 sectors83 positions
Top 3 = 12% of book · BAC, SCHW, COF
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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
No options
Andreas Halvorsen has no PUT or CALL positions disclosed in this quarter's 13F.
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Activity & trades
Quarter-by-quarterLast move 2025Q4
TRIM AMD — and 4 more recent moves.
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Recent transactions
See full activity →TRIM
ADVANCED MICRO DEVICES INC
−439,078
~$214.16 · 2025Q4
2026-02-17
NEW
CHUBB LIMITED
+1,013,839
~$312.12 · 2025Q4
2026-02-17
NEW
ITAU UNIBANCO HLDG S A
+28,396,545
~$7.16 · 2025Q4
2026-02-17