Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2023-03-31
$21.31B
Positions
81
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 | $651.2M | 3.06% | 88,238,700 | +0 | +0.00% | 3.53% | 2021-12-31 | $7 | ~$10 | -26.79% | |
| 2 | BRIDGEBIO PHARMA INC BBIO | $441.4M | 2.07% | 26,620,991 | +0 | +0.00% | 1.02% | 2019-06-30 | $17 | ~$27 | -38.52% | |
| 3 | ADAPTIVE BIOTECHNOLOGIES COR ADPT | $264.8M | 1.24% | 29,993,708 | +0 | +0.00% | 1.15% | 2019-06-30 | $9 | ~$48 | -81.72% | |
| 4 | INHIBRX INC INBXUSD | $125.3M | 0.59% | 6,639,199 | +0 | +0.00% | 0.82% | 2020-09-30 | $19 | ~$19 | +1.12% | |
| 5 | GUARDANT HEALTH INC GH 0 11/15/27 | $81.0M | 0.38% | 120,000,000 | +0 | +0.00% | 0.38% | 2021-12-31 | $1 | ~$1 | -33.57% | |
| 6 | 4D MOLECULAR THERAPEUTICS IN FDMT | $67.7M | 0.32% | 3,937,914 | +0 | +0.00% | 0.44% | 2020-12-31 | $17 | ~$41 | -58.53% | |
| 7 | PHARVARIS N V | $25.3M | 0.12% | 3,231,923 | +0 | +0.00% | 0.18% | 2021-03-31 | $8 | ~$24 | -66.74% | |
| 8 | RALLYBIO CORP | $24.0M | 0.11% | 4,194,777 | +0 | +0.00% | 0.14% | 2021-09-30 | $6 | ~$18 | -67.52% | |
| 9 | DAY ONE BIOPHARMACEUTICALS I DAWNGBX | $20.8M | 0.10% | 1,558,563 | +0 | +0.00% | 0.17% | 2021-06-30 | $13 | ~$19 | -31.19% | |
| 10 | PEPGEN INC PEPG | $18.9M | 0.09% | 1,544,631 | +0 | +0.00% | 0.10% | 2022-06-30 | $12 | ~$10 | +23.16% | |
| 11 | KINNATE BIOPHARMA INC KNTEUSD | $11.4M | 0.05% | 1,820,462 | +0 | +0.00% | 0.06% | 2020-12-31 | $6 | ~$40 | -84.29% | |
| 12 | TREVI THERAPEUTICS INC TRVI | $8.1M | 0.04% | 4,400,000 | +0 | +0.00% | 0.04% | 2022-09-30 | $2 | ~$2 | +20.13% | |
| 13 | LIANBIO LIANY | $7.0M | 0.03% | 3,564,173 | +0 | +0.00% | 0.03% | 2021-12-31 | $2 | ~$4 | -54.57% | |
| 14 | TALARIS THERAPEUTICS INC | $6.2M | 0.03% | 3,289,617 | +0 | +0.00% | 0.02% | 2021-06-30 | $2 | ~$15 | -87.20% | |
| 15 | VERASTEM INC | $3.8M | 0.02% | 9,224,000 | +0 | +0.00% | 0.02% | 2022-06-30 | $0 | ~$1 | -64.21% |