Andreas Halvorsen

Viking Global

Andreas Halvorsen is a prominent figure in the investment management industry, serving as the co-founder and CEO of Viking Global Investors, an American hedge fund firm based in Stamford, Connecticut. The firm is known for its expertise in long-short equity, long-only equity, and private equity strategies. Halvorsen's investment philosophy emphasizes rigorous fundamental analysis and a focus on long-term value creation, which has positioned Viking Global as a significant player in the financial markets. Viking Global Investors employs a multi-strategy approach, leveraging its deep research capabilities to navigate various sectors, including healthcare, financial services, and consumer cyclical industries. The firm actively manages a diverse portfolio, which has included notable positions in companies such as Apple Inc., Microsoft Corp., and DraftKings Inc. Their strategy involves a combination of position increases, reductions, and exits, reflecting a dynamic approach to market opportunities. Recent disclosures from Viking Global indicate a range of activities between November 14, 2025, and May 15, 2026, with a total of 200 reported moves. The firm has shown a pattern of significant position reductions and exits, particularly highlighted by a notable move involving Microsoft Corp, which saw a value of approximately $1.3 billion. This activity underscores Halvorsen's adaptive investment strategy in response to market conditions.

Latest Trades

CompanyValueActionChangePriceLast Price
Arthur J. Gallagher & CoAJG$158M727.4k sharesTrimQ1 2026 13F$112M$215.42$254.22
TIC Solutions, Inc.TIC$236M35.8M sharesTrimQ1 2026 13F$112M$9.41$7.16
CoreWeave, Inc. Class A Common StockCRWV$108M1.4M sharesOtherQ1 2026 13F$108M$86.78$77.82
Veradermics, IncorporatedMANE$107M1.7M sharesOtherQ1 2026 13F$107M$63.15$105.83
Chubb LtdCB$422M1.3M sharesAddQ1 2026 13F$106M$320.83$337.44
CoStar Group, Inc.CSGP$-97.0MExitQ1 2026 13F$97M$52.06$30.37
Interactive Brokers Group, Inc.IBKR$94M1.4M sharesOtherQ1 2026 13F$94M$71.38$93.29
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$88M1.1M sharesOtherQ1 2026 13F$88M$80.08--
Sea LimitedSE$392M4.7M sharesTrimQ1 2026 13F$76M$107.18$112.20
Aon plcAON$351M1.1M sharesAddQ1 2026 13F$74M$332.33$355.15
Carnival Corporation & PLCCCL$355M13.7M sharesTrimQ1 2026 13F$74M$29.16$26.59
Ralliant Corp.RAL$89M2.1M sharesTrimQ1 2026 13F$72M$47.02$67.53
Adaptive Biotechnologies CorporationADPT$416M30M sharesTrimQ1 2026 13F$71M$15.93$21.86
Masimo CorporationMASI$-66.9MExitQ1 2026 13F$67M$156.95$179.95
Camden Property TrustCPT$461M4.7M sharesTrimQ1 2026 13F$64M$106.02$112.71
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$60M2.3M sharesOtherQ1 2026 13F$60M$25.90--
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$239M7.3M sharesAddQ1 2026 13F$60M$32.92--
Twilio Inc.TWLO$57M450.8k sharesOtherQ1 2026 13F$57M$123.00$211.54
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$131M2.7M sharesAddQ1 2026 13F$50M$49.05--
Mid-America Apartment Communities IncMAA$586M4.8M sharesAddQ1 2026 13F$47M$131.98$131.77
Roivant Sciences Ltd.ROIV$184M6.7M sharesAddQ1 2026 13F$44M$25.69$34.91
HCA Healthcare IncHCA$509M1.1M sharesAddQ1 2026 13F$42M$503.40$370.37
BioMarin Pharmaceutical Inc.BMRN$399M7.1M sharesAddQ1 2026 13F$40M$58.31$58.95
Celestica, Inc. Common StockCLS$466M1.7M sharesTrimQ1 2026 13F$36M$290.15$334.77
The Sherwin-Williams Co (2)SHW$998M3.1M sharesTrimQ1 2026 13F$30M$344.24$327.67
West Pharmaceutical Services, Inc.WST$105M416.9k sharesAddQ1 2026 13F$23M$248.81$359.00
Standard BioTools Inc.LAB$54M58.7M sharesTrimQ1 2026 13F$21M$1.21$0.8575
McDonald's CorporationMCD$1B3.6M sharesAddQ1 2026 13F$20M$318.58$267.18
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$20M1M sharesOtherQ1 2026 13F$20M$20.37--
ORIC Pharmaceuticals, Inc.ORIC$74M5.8M sharesAddQ1 2026 13F$20M$11.35$10.73
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$19M650k sharesOtherQ1 2026 13F$19M$29.27--
The Progressive CorporationPGR$320M1.6M sharesAddQ1 2026 13F$17M$206.39$226.58
Intercontinental Exchange IncICE$761M4.8M sharesTrimQ1 2026 13F$17M$163.13$141.81
Andreas Halvorsen (Viking Global) trim Unmapped 13F securityPORTFOLIO$97M1.4M sharesTrimQ1 2026 13F$17M$67.23--
Andreas Halvorsen (Viking Global) trim Unmapped 13F securityPORTFOLIO$6M3.5M sharesTrimQ1 2026 13F$17M$1.77--
Taiwan Semiconductor Manufacturing Co LtdTSM$2B4.5M sharesAddQ1 2026 13F$15M$344.13$414.71
Andreas Halvorsen (Viking Global) trim Unmapped 13F securityPORTFOLIO$135M4.2M sharesTrimQ1 2026 13F$13M$32.01--
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$10.8MAddQ1 2026 13F$11M----
The Walt Disney CompanyDIS$1B13.3M sharesAddQ1 2026 13F$8M$105.69$96.22
Schwab (Charles) CorpSCHW$1B14.7M sharesTrimQ1 2026 13F$8M$98.07$101.95
Ginkgo Bioworks Holdings, Inc.DNA$22M3.6M sharesTrimQ1 2026 13F$8M$6.13$8.29
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$5M524.3k sharesOtherQ1 2026 13F$5M$8.97--
Sionna Therapeutics, Inc.SION$128M3.2M sharesTrimQ1 2026 13F$3M$38.16$45.29
Andreas Halvorsen (Viking Global) exit Unmapped 13F securityPORTFOLIO$-2.9MExitQ1 2026 13F$3M----
Trevi Therapeutics, Inc.TRVI$38M3.2M sharesTrimQ1 2026 13F$2M$11.20$17.36
Pharvaris N.V.PHVS$103M3.7M sharesAddQ1 2026 13F$2M$28.25$33.55
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