Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2023-09-30
$24.64B
Positions
80
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 | API GROUP CORP APG | $886.8M | 3.60% | 34,199,532 | +0 | +0.00% | 3.82% | 2020-06-30 | $26 | ~$12 | +110.12% | |
| 2 | GINKGO BIOWORKS HOLDINGS INC DNA4EUR | $259.0M | 1.05% | 143,085,126 | +0 | +0.00% | 1.09% | 2021-09-30 | $2 | ~$3 | -41.49% | |
| 3 | ADAPTIVE BIOTECHNOLOGIES COR ADPT | $163.5M | 0.66% | 29,993,708 | +0 | +0.00% | 0.82% | 2019-06-30 | $5 | ~$48 | -88.72% | |
| 4 | PHARVARIS N V | $67.5M | 0.27% | 3,231,923 | +0 | +0.00% | 0.21% | 2021-03-31 | $21 | ~$24 | -11.24% | |
| 5 | 4D MOLECULAR THERAPEUTICS IN FDMT | $61.0M | 0.25% | 4,787,914 | +0 | +0.00% | 0.35% | 2020-12-31 | $13 | ~$37 | -65.80% | |
| 6 | AMYLYX PHARMACEUTICALS INC AMLX | $54.2M | 0.22% | 2,962,555 | +0 | +0.00% | 0.26% | 2022-03-31 | $18 | ~$13 | +42.49% | |
| 7 | DAY ONE BIOPHARMACEUTICALS I DAWNGBX | $31.4M | 0.13% | 2,558,563 | +0 | +0.00% | 0.13% | 2021-06-30 | $12 | ~$17 | -26.89% | |
| 8 | RALLYBIO CORP | $14.1M | 0.06% | 4,194,777 | +0 | +0.00% | 0.10% | 2021-09-30 | $3 | ~$18 | -80.83% | |
| 9 | TREVI THERAPEUTICS INC TRVI | $9.6M | 0.04% | 4,400,000 | +0 | +0.00% | 0.04% | 2022-09-30 | $2 | ~$2 | +41.56% | |
| 10 | PEPGEN INC PEPG | $7.5M | 0.03% | 1,482,434 | +0 | +0.00% | 0.05% | 2022-06-30 | $5 | ~$10 | -48.84% | |
| 11 | LIANBIO LIANY | $5.3M | 0.02% | 3,564,173 | +0 | +0.00% | 0.03% | 2021-12-31 | $1 | ~$4 | -65.29% | |
| 12 | KINNATE BIOPHARMA INC KNTEUSD | $2.5M | 0.01% | 1,820,462 | +0 | +0.00% | 0.02% | 2020-12-31 | $1 | ~$40 | -96.48% |