Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2022-03-31
$24.74B
Positions
91
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 | $435.9M | 1.76% | 88,238,700 | +0 | +0.00% | 2.56% | 2021-12-31 | $5 | ~$10 | -50.99% | |
| 2 | ADAPTIVE BIOTECHNOLOGIES COR ADPT | $416.3M | 1.68% | 29,993,708 | +0 | +0.00% | 2.42% | 2019-06-30 | $14 | ~$48 | -71.26% | |
| 3 | BRIDGEBIO PHARMA INC BBIO | $270.2M | 1.09% | 26,620,991 | +0 | +0.00% | 1.28% | 2019-06-30 | $10 | ~$27 | -62.37% | |
| 4 | RIVIAN AUTOMOTIVE INC RIVN | $161.0M | 0.65% | 3,204,389 | +0 | +0.00% | 0.96% | 2021-12-31 | $50 | ~$104 | -51.55% | |
| 5 | INHIBRX INC INBXUSD | $118.2M | 0.48% | 5,305,866 | +0 | +0.00% | 0.67% | 2020-09-30 | $22 | ~$18 | +23.78% | |
| 6 | GUARDANT HEALTH INC GH 0 11/15/27 | $96.9M | 0.39% | 120,000,000 | +0 | +0.00% | 0.35% | 2021-12-31 | $1 | ~$1 | -20.61% | |
| 7 | 4D MOLECULAR THERAPEUTICS IN FDMT | $59.5M | 0.24% | 3,937,914 | +0 | +0.00% | 0.25% | 2020-12-31 | $15 | ~$41 | -63.52% | |
| 8 | TALARIS THERAPEUTICS INC | $32.4M | 0.13% | 3,289,617 | +0 | +0.00% | 0.14% | 2021-06-30 | $10 | ~$15 | -33.01% | |
| 9 | RALLYBIO CORP | $29.3M | 0.12% | 4,194,777 | +0 | +0.00% | 0.12% | 2021-09-30 | $7 | ~$18 | -60.30% | |
| 10 | EDGEWISE THERAPEUTICS INC EWTX | $26.5M | 0.11% | 2,727,249 | +0 | +0.00% | 0.12% | 2021-03-31 | $10 | ~$32 | -70.15% | |
| 11 | OLAPLEX HLDGS INC OLPX | $25.2M | 0.10% | 1,613,189 | +0 | +0.00% | 0.14% | 2021-09-30 | $16 | ~$24 | -36.20% | |
| 12 | KINNATE BIOPHARMA INC KNTEUSD | $20.5M | 0.08% | 1,820,462 | +0 | +0.00% | 0.09% | 2020-12-31 | $11 | ~$40 | -71.69% | |
| 13 | DAY ONE BIOPHARMACEUTICALS I DAWNGBX | $11.5M | 0.05% | 1,157,424 | +0 | +0.00% | 0.06% | 2021-06-30 | $10 | ~$23 | -56.43% | |
| 14 | LIANBIO LIANY | $5.6M | 0.02% | 1,500,000 | +0 | +0.00% | 0.03% | 2021-12-31 | $4 | ~$6 | -39.77% |