Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2016-03-31
$22.72B
Positions
63
2026-03-31
2025-12-31
2025-09-30
2025-06-30
2025-03-31
2024-12-31
2024-09-30
2024-06-30
2024-03-31
2023-12-31
2023-09-30
2023-06-30
2023-03-31
2022-12-31
2022-09-30
2022-06-30
2022-03-31
2021-12-31
2021-09-30
2021-06-30
2021-03-31
2020-12-31
2020-09-30
2020-06-30
2020-03-31
2019-12-31
2019-09-30
2019-06-30
2019-03-31
2018-12-31
2018-09-30
2018-06-30
2018-03-31
2017-12-31
2017-09-30
2017-06-30
2017-03-31
2016-12-31
2016-09-30
2016-06-30
2016-03-31
2015-12-31
2015-09-30
2015-06-30
2015-03-31
2014-12-31
2014-09-30
2014-06-30
2014-03-31
2013-12-31
2013-09-30
2013-06-30
Price is the latest implied close from the selected quarter's 13F (value ÷ shares). Est. Cost is a running average that assumes each quarter's trades cleared near the midpoint of consecutive 13F closes (or yfinance VWAP when available). Most accurate for slow accumulators, least accurate for activists who build positions in a few days.
| # | Issuer | Value ↓ | Weight | Shares | Share Δ | Share Δ % | Prev Weight | First Held | Price | Est. Cost | Unrealized % | Status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | ALLERGAN PLC | $1.31B | 5.76% | 4,881,957 | -1,096,118 | -18.34% | 7.04% | 2015-06-30 | $268 | ~$303 | -11.42% | |
| 2 | ALPHABET INC GOOG | $787.0M | 3.46% | 1,056,384 | -90,051 | -7.85% | 3.28% | 2015-12-31 | $745 | ~$759 | -1.84% | |
| 3 | ANTHEM INC ELV | $674.0M | 2.97% | 4,849,229 | -1,837,736 | -27.48% | 3.52% | 2014-12-31 | $139 | ~$146 | -4.61% | |
| 4 | WALGREENS BOOTS ALLIANCE INC WBA | $529.0M | 2.33% | 6,279,184 | -6,492,313 | -50.83% | 4.10% | 2014-12-31 | $84 | ~$80 | +5.83% | |
| 5 | PIONEER NAT RES CO PXDEUR | $359.6M | 1.58% | 2,555,168 | -6,815,937 | -72.73% | 4.43% | 2014-03-31 | $141 | ~$176 | -20.09% | |
| 6 | CANADIAN PAC RY LTD | $305.1M | 1.34% | 2,299,450 | -1,702,137 | -42.54% | 1.93% | 2013-12-31 | $133 | ~$180 | -26.46% | |
| 7 | TRANSDIGM GROUP INC TDG | $242.7M | 1.07% | 1,101,310 | -498,818 | -31.17% | 1.38% | 2015-06-30 | $220 | ~$221 | -0.23% | |
| 8 | HUMANA INC HUM | $224.7M | 0.99% | 1,228,373 | -3,103,563 | -71.64% | 2.92% | 2013-06-30 | $183 | ~$167 | +9.59% | |
| 9 | ENDO INTL PLC | $125.8M | 0.55% | 4,468,744 | -52,210 | -1.15% | 1.04% | 2015-12-31 | $28 | ~$61 | -54.02% | |
| 10 | ALIBABA GROUP HLDG LTD BABA | $110.3M | 0.49% | 1,395,429 | -233,612 | -14.34% | 0.50% | 2014-09-30 | $79 | ~$91 | -13.21% | |
| 11 | ENVISION HEALTHCARE HLDGS IN | $104.5M | 0.46% | 5,122,097 | -2,686,219 | -34.40% | 0.76% | 2015-03-31 | $20 | ~$39 | -47.15% | |
| 12 | LABORATORY CORP AMER HLDGS | $78.8M | 0.35% | 673,048 | -2,535,660 | -79.02% | 1.50% | 2015-09-30 | $117 | ~$108 | +7.98% | |
| 13 | BIOGEN INC BIIB | $60.1M | 0.26% | 230,947 | -137,917 | -37.39% | 0.43% | 2013-06-30 | $260 | ~$260 | +0.03% | |
| 14 | CHENIERE ENERGY INC LNG | $49.3M | 0.22% | 1,458,025 | -14,462,498 | -90.84% | 2.24% | 2014-09-30 | $34 | ~$68 | -50.59% | |
| 15 | CROWN CASTLE INTL CORP NEW CCI | $46.4M | 0.20% | 536,396 | -2,459,470 | -82.10% | 0.98% | 2014-12-31 | $86 | ~$79 | +9.19% | |
| 16 | ANADARKO PETE CORP APC3EUR | $39.7M | 0.17% | 853,467 | -3,737,508 | -81.41% | 0.84% | 2015-12-31 | $47 | ~$49 | -4.14% | |
| 17 | PFIZER INC PFE | $33.1M | 0.15% | 1,117,592 | -6,307,098 | -84.95% | 0.90% | 2015-12-31 | $30 | ~$32 | -8.18% | |
| 18 | LYONDELLBASELL INDUSTRIES N | $26.0M | 0.11% | 303,852 | -9,024,176 | -96.74% | 3.06% | 2013-06-30 | $86 | ~$85 | +0.44% | |
| 19 | KANSAS CITY SOUTHERN KSUEUR | $24.5M | 0.11% | 286,589 | -89,050 | -23.71% | 0.11% | 2014-03-31 | $85 | ~$109 | -21.89% | |
| 20 | SHIRE PLC | $22.5M | 0.10% | 130,870 | -6,328 | -4.61% | 0.11% | 2013-06-30 | $172 | ~$125 | +37.05% |