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.

Biggest Wins

PositionReported PriceLast PriceEst. P/LReturnEst. Value
Twilio Inc.TWLO · Q1 2026$125.82$211.54+$39M+68.1%$95M
Veradermics, IncorporatedMANE · Q1 2026$63.15$105.83+$72M+67.6%$179M
Ralliant Corp.RAL · Q1 2026$41.59$67.53+$55M+62.4%$144M
Adaptive Biotechnologies CorporationADPT · Q1 2026$13.88$21.86+$239M+57.5%$656M
Trevi Therapeutics, Inc.TRVI · Q1 2026$11.93$17.36+$17M+45.5%$56M
West Pharmaceutical Services, Inc.WST · Q1 2026$250.64$359.00+$45M+43.2%$150M
Interactive Brokers Group, Inc.IBKR · Q1 2026$67.07$93.29+$37M+39.1%$130M
Reddit, Inc.RDDT · Q1 2026$134.65$186.22+$132M+38.3%$475M
Sea LimitedSE · Q1 2026$82.81$112.20+$139M+35.5%$532M
Ginkgo Bioworks Holdings, Inc.DNA · Q1 2026$6.13$8.29+$8M+35.2%$30M
Apple IncAAPL · Q1 2026$253.79$327.50+$265M+29%$1B
Alphabet IncGOOGL · Q1 2026$287.56$370.92+$200M+29%$889M
ATI Inc.ATI · Q1 2026$145.46$184.68+$131M+27%$616M
Roivant Sciences Ltd.ROIV · Q1 2026$27.70$34.91+$48M+26%$232M
Taiwan Semiconductor Manufacturing Co LtdTSM · Q1 2026$337.95$414.71+$343M+22.7%$2B
Amazon.com IncAMZN · Q1 2026$208.27$254.96+$56M+22.4%$305M
CSX CorpCSX · Q1 2026$41.05$50.23+$171M+22.4%$938M
Waters CorporationWAT · Q1 2026$297.80$359.79+$78M+20.8%$452M
Visa IncV · Q1 2026$302.24$365.14+$398M+20.8%$2B
The PNC Financial Services Group, Inc.PNC · Q1 2026$208.09$248.90+$124M+19.6%$753M
Meta Platforms, Inc.META · Q1 2026$572.13$681.31+$116M+19.1%$724M
Celestica, Inc. Common StockCLS · Q1 2026$281.68$334.77+$88M+18.8%$554M
Pharvaris N.V.PHVS · Q1 2026$28.25$33.55+$19M+18.8%$123M
Lennox International IncLII · Q1 2026$464.13$548.67+$133M+18.2%$863M
JPMorgan Chase & Co.JPM · Q1 2026$294.16$346.91+$143M+17.9%$938M
Arthur J. Gallagher & CoAJG · Q1 2026$216.58$254.22+$27M+17.4%$185M
Camden Property TrustCPT · Q1 2026$97.66$112.71+$71M+15.4%$531M
Capital One Financial CorporationCOF · Q1 2026$182.43$208.89+$43M+14.5%$337M
The Progressive CorporationPGR · Q1 2026$198.24$226.58+$46M+14.3%$366M
Regal Rexnord Corporation Common StockRRX · Q1 2026$187.26$213.31+$82M+13.9%$670M
Sionna Therapeutics, Inc.SION · Q1 2026$40.09$45.29+$17M+13%$145M
Aon plcAON · Q1 2026$322.78$355.15+$35M+10%$386M
BRIDGEBIO PHARMA INCBBIO · Q1 2026$74.26$81.46+$85M+9.7%$965M
Fortive CorporationFTV · Q1 2026$55.28$60.52+$118M+9.48%$1B
TIC Solutions, Inc.TIC · Q1 2026$6.58$7.16+$21M+8.81%$257M
Thermo Fisher Scientific Inc.TMO · Q1 2026$491.53$534.07+$71M+8.65%$891M
Schwab (Charles) CorpSCHW · Q1 2026$93.98$101.95+$117M+8.48%$1B
Mid-America Apartment Communities IncMAA · Q1 2026$122.12$131.77+$46M+7.9%$632M
Johnson Controls International plcJCI · Q1 2026$130.95$140.13+$41M+7.01%$619M
Microsoft CorpMSFT · Q1 2026$370.17$395.63+$59M+6.88%$914M
American International Group IncAIG · Q1 2026$75.25$80.13+$21M+6.49%$338M
Tesla IncTSLA · Q1 2026$371.75$394.46+$57M+6.11%$984M
Dick's Sporting Goods Inc.DKS · Q1 2026$198.29$208.89+$13M+5.35%$264M
The Boeing CompanyBA · Q1 2026$199.03$209.63+$34M+5.33%$670M
BioMarin Pharmaceutical Inc.BMRN · Q1 2026$56.49$58.95+$17M+4.35%$416M
Home Depot, Inc. (The) Common StockHD · Q1 2026$328.89$341.44+$6M+3.82%$172M
Chubb LtdCB · Q1 2026$325.93$337.44+$15M+3.53%$437M
Carnival Corporation & PLCCCL · Q1 2026$25.88$26.59+$10M+2.74%$365M
The Sherwin-Williams Co (2)SHW · Q1 2026$320.55$327.67+$22M+2.22%$1B
General Motors CoGM · Q1 2026$74.50$76.11+$15M+2.15%$698M