Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2015-12-31
$26.52B
Positions
64
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 | $1.87B | 7.04% | 5,978,075 | -1,224,309 | -17.00% | 7.50% | 2015-06-30 | $312 | ~$303 | +3.28% | |
| 2 | AMAZON COM INC AMZN | $1.74B | 6.54% | 2,567,446 | -450,318 | -14.92% | 5.92% | 2015-06-30 | $676 | ~$444 | +52.38% | |
| 3 | WALGREENS BOOTS ALLIANCE INC WBA | $1.09B | 4.10% | 12,771,497 | -10,501,389 | -45.12% | 7.41% | 2014-12-31 | $85 | ~$80 | +6.98% | |
| 4 | LYONDELLBASELL INDUSTRIES N | $810.6M | 3.06% | 9,328,028 | -4,177,928 | -30.93% | 4.31% | 2013-06-30 | $87 | ~$85 | +1.99% | |
| 5 | AIR PRODS & CHEMS INC APD | $700.7M | 2.64% | 5,385,451 | -531,770 | -8.99% | 2.89% | 2014-09-30 | $130 | ~$137 | -5.28% | |
| 6 | CANADIAN PAC RY LTD | $510.6M | 1.93% | 4,001,587 | -160,055 | -3.85% | 2.29% | 2013-12-31 | $128 | ~$180 | -29.28% | |
| 7 | LABORATORY CORP AMER HLDGS | $396.7M | 1.50% | 3,208,708 | -1,844,641 | -36.50% | 2.10% | 2015-09-30 | $124 | ~$108 | +13.99% | |
| 8 | BANK NEW YORK MELLON CORP BK | $363.0M | 1.37% | 8,805,531 | -1,484,337 | -14.43% | 1.54% | 2014-09-30 | $41 | ~$39 | +5.52% | |
| 9 | CROWN CASTLE INTL CORP NEW CCI | $259.0M | 0.98% | 2,995,866 | -1,500,472 | -33.37% | 1.36% | 2014-12-31 | $86 | ~$79 | +9.12% | |
| 10 | CITIGROUP INC C | $221.1M | 0.83% | 4,271,971 | -195,129 | -4.37% | 0.85% | 2013-12-31 | $52 | ~$52 | -0.77% | |
| 11 | ENVISION HEALTHCARE HLDGS IN | $202.8M | 0.76% | 7,808,316 | -2,046,343 | -20.77% | 1.39% | 2015-03-31 | $26 | ~$39 | -32.72% | |
| 12 | CTRIP COM INTL LTD CTRPUSD | $174.5M | 0.66% | 3,767,142 | -1,147,039 | -23.34% | 1.19% | 2014-06-30 | $46 | ~$58 | -20.61% | |
| 13 | KITE PHARMA INC | $136.0M | 0.51% | 2,207,203 | -265,377 | -10.73% | 0.53% | 2014-09-30 | $62 | ~$53 | +15.63% | |
| 14 | AETNA INC NEW | $134.8M | 0.51% | 1,247,101 | -2,232,072 | -64.16% | 1.46% | 2013-06-30 | $108 | ~$97 | +11.76% | |
| 15 | ALIBABA GROUP HLDG LTD BABA | $132.4M | 0.50% | 1,629,041 | -854,732 | -34.41% | 0.56% | 2014-09-30 | $81 | ~$91 | -10.75% | |
| 16 | ACE LTD | $97.2M | 0.37% | 831,759 | -308,956 | -27.08% | 0.45% | 2015-09-30 | $117 | ~$103 | +13.01% | |
| 17 | LEGG MASON INC LMEUR | $96.9M | 0.37% | 2,469,033 | -63 | -0.00% | 0.39% | 2014-12-31 | $39 | ~$53 | -26.49% | |
| 18 | KANSAS CITY SOUTHERN KSUEUR | $28.0M | 0.11% | 375,639 | -2,715,561 | -87.85% | 1.08% | 2014-03-31 | $75 | ~$109 | -31.74% | |
| 19 | MASTERCARD INC MA | $15.8M | 0.06% | 162,264 | -5,265,447 | -97.01% | 1.87% | 2013-06-30 | $97 | ~$76 | +28.31% |