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.

History Trades

CompanyValueActionChangePriceLast Price
Teva Pharmaceutical Industries LimitedTEVA$-144.6MTrimQ3 2025 13F$145M$17.56$31.56
Schwab (Charles) CorpSCHW$144.0MAddQ3 2025 13F$144M$94.92$101.95
Maplebear Inc. - Common StockCART$-139.2MTrimQ3 2025 13F$139M$46.04$47.61
Nike IncNKE$132.4MAddQ3 2025 13F$132M$74.53$42.96
HCA Healthcare IncHCA$-128.8MTrimQ3 2025 13F$129M$387.59$370.37
Taiwan Semiconductor Manufacturing Co LtdTSM$121.1MAddQ3 2025 13F$121M$244.54$424.61
McDonald's CorporationMCD$112.4MAddQ3 2025 13F$112M$304.36$267.18
Camden Property TrustCPT$104.7MAddQ3 2025 13F$105M$109.90$112.09
T-Mobile US IncTMUS$103.0MAddQ3 2025 13F$103M$242.06$187.62
CoStar Group, Inc.CSGP$-102.7MTrimQ3 2025 13F$103M$88.37$30.37
Adaptive Biotechnologies CorporationADPT$99.3MAddQ3 2025 13F$99M$12.19$21.86
Royalty Pharma plcRPRX$-93.6MExitQ3 2025 13F$94M$36.20$56.31
Philip Morris International IncPM$88.8MAddQ3 2025 13F$89M$168.25$192.12
Molina Healthcare IncMOH$-79.7MExitQ3 2025 13F$80M$184.06$233.36
TIC Solutions, Inc.TIC$78.0MAddQ3 2025 13F$78M$11.40$7.16
Primo Brands CorpPRMB$-71.6MTrimQ3 2025 13F$72M$25.88$24.93
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$220M6.3M sharesAddQ3 2025 13F$70M$34.75--
Boston Scientific CorpBSX$-69.2MTrimQ3 2025 13F$69M$103.56$44.17
Andreas Halvorsen (Viking Global) trim Unmapped 13F securityPORTFOLIO$556M1.8M sharesTrimQ3 2025 13F$68M$312.53--
Chipotle Mexican Grill IncCMG$-59.3MTrimQ3 2025 13F$59M$45.03$32.93
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$184M6.5M sharesAddQ3 2025 13F$58M$28.44--
The Boeing CompanyBA$55.7MAddQ3 2025 13F$56M$225.47$209.63
Integer Holdings CorporationITGR$-52.0MTrimQ3 2025 13F$52M$108.79$99.62
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$51M2.7M sharesOtherQ3 2025 13F$51M$19.23--
CSX CorpCSX$-49.5MTrimQ3 2025 13F$49M$34.15$50.23
Regal Rexnord Corporation Common StockRRX$-49.2MTrimQ3 2025 13F$49M$147.38$213.31
Metsera, Inc.MTSR$-46.0MExitQ3 2025 13F$46M--$70.50
Sionna Therapeutics, Inc.SION$38.5MAddQ3 2025 13F$39M$21.76$45.29
Trevi Therapeutics, Inc.TRVI$38.5MAddQ3 2025 13F$38M$7.50$17.36
Ralliant Corp.RAL$-34.9MTrimQ3 2025 13F$35M$44.46$67.53
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$60M1.8M sharesAddQ3 2025 13F$35M$33.68--
Andreas Halvorsen (Viking Global) other Unmapped 13F securityPORTFOLIO$34M2M sharesOtherQ3 2025 13F$34M$16.84--
Masimo CorporationMASI$29.3MAddQ3 2025 13F$29M$151.39$179.95
Danaher CorpDHR$-28.9MTrimQ3 2025 13F$29M$198.98$205.04
Roivant Sciences Ltd.ROIV$-28.9MTrimQ3 2025 13F$29M$12.38$34.96
BRIDGEBIO PHARMA INCBBIO$28.7MAddQ3 2025 13F$29M$48.77$81.46
Pharvaris N.V.PHVS$26.9MAddQ3 2025 13F$27M--$33.55
HealthEquity IncHQY$-23.0MExitQ3 2025 13F$23M$94.11$98.69
Sea LimitedSE$-22.5MTrimQ3 2025 13F$23M$171.35$106.26
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$16M3.5M sharesAddQ3 2025 13F$14M$4.62--
APPLOVIN CORPAPP$-13.8MTrimQ3 2025 13F$14M$461.14$427.01
Ryan Specialty Holdings, Inc.RYAN$13.0MAddQ3 2025 13F$13M$59.24$40.66
ORIC Pharmaceuticals, Inc.ORIC$12.2MAddQ3 2025 13F$12M$10.52$10.73
Ginkgo Bioworks Holdings, Inc.DNA$11.9MAddQ3 2025 13F$12M$14.58$8.29
Standard BioTools Inc.LAB$5.9MAddQ3 2025 13F$6M$1.30$0.8575
Andreas Halvorsen (Viking Global) add Unmapped 13F securityPORTFOLIO$2M4.2M sharesAddQ3 2025 13F$675k$0.499--
Establishment Labs Holdings Inc.ESTA$-590.8KTrimQ3 2025 13F$591k$40.85$92.30
Unitedhealth Group IncUNH$-1.1BExitQ2 2025 13F$1B$384.44$418.52
Intuit IncINTU$-1.0BExitQ2 2025 13F$1B$675.75$289.92
The Walt Disney CompanyDIS$725M5.8M sharesOtherQ2 2025 13F$725M$103.82$96.22
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