Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2022-09-30
$21.66B
Positions
88
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 | ROIVANT SCIENCES LTD | $284.1M | 1.31% | 88,238,700 | +0 | +0.00% | 1.64% | 2021-12-31 | $3 | ~$10 | -68.06% | |
| 2 | BRIDGEBIO PHARMA INC BBIO | $264.6M | 1.22% | 26,620,991 | +0 | +0.00% | 1.11% | 2019-06-30 | $10 | ~$27 | -63.14% | |
| 3 | ADAPTIVE BIOTECHNOLOGIES COR ADPT | $213.6M | 0.99% | 29,993,708 | +0 | +0.00% | 1.11% | 2019-06-30 | $7 | ~$48 | -85.26% | |
| 4 | INHIBRX INC INBXUSD | $95.2M | 0.44% | 5,305,866 | +0 | +0.00% | 0.28% | 2020-09-30 | $18 | ~$18 | -0.28% | |
| 5 | GUARDANT HEALTH INC GH 0 11/15/27 | $87.9M | 0.41% | 120,000,000 | +0 | +0.00% | 0.34% | 2021-12-31 | $1 | ~$1 | -27.92% | |
| 6 | RALLYBIO CORP | $60.7M | 0.28% | 4,194,777 | +0 | +0.00% | 0.14% | 2021-09-30 | $14 | ~$18 | -17.69% | |
| 7 | RIVIAN AUTOMOTIVE INC RIVN | $52.7M | 0.24% | 1,602,193 | +0 | +0.00% | 0.19% | 2021-12-31 | $33 | ~$104 | -68.26% | |
| 8 | 4D MOLECULAR THERAPEUTICS IN FDMT | $31.7M | 0.15% | 3,937,914 | +0 | +0.00% | 0.13% | 2020-12-31 | $8 | ~$41 | -80.60% | |
| 9 | KINNATE BIOPHARMA INC KNTEUSD | $21.8M | 0.10% | 1,820,462 | +0 | +0.00% | 0.11% | 2020-12-31 | $12 | ~$40 | -69.96% | |
| 10 | PEPGEN INC PEPG | $16.3M | 0.08% | 1,793,923 | +0 | +0.00% | 0.08% | 2022-06-30 | $9 | ~$10 | -8.56% | |
| 11 | TALARIS THERAPEUTICS INC | $8.7M | 0.04% | 3,289,617 | +0 | +0.00% | 0.07% | 2021-06-30 | $3 | ~$15 | -82.10% | |
| 12 | VERASTEM INC | $7.8M | 0.04% | 9,224,000 | +0 | +0.00% | 0.05% | 2022-06-30 | $1 | ~$1 | -26.73% | |
| 13 | LIANBIO LIANY | $7.1M | 0.03% | 3,564,173 | +0 | +0.00% | 0.04% | 2021-12-31 | $2 | ~$4 | -53.64% |