Fund detail
Viking Global Investors (Halvorsen)
hedge-fund, active
Quarters
52
2025-09-30
$38.50B
Positions
78
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 | ACUREN CORP TIC | $457.3M | 1.19% | 34,360,000 | +0 | +0.00% | 1.10% | 2025-03-31 | $13 | ~$11 | +19.69% | |
| 2 | ADAPTIVE BIOTECHNOLOGIES COR ADPT | $448.7M | 1.17% | 29,993,708 | +0 | +0.00% | 1.01% | 2019-06-30 | $15 | ~$48 | -69.03% | |
| 3 | SIONNA THERAPEUTICS INC SION | $94.0M | 0.24% | 3,195,181 | +0 | +0.00% | 0.16% | 2025-03-31 | $29 | ~$11 | +174.31% | |
| 4 | PHARVARIS N V | $91.2M | 0.24% | 3,653,310 | +0 | +0.00% | 0.19% | 2021-03-31 | $25 | ~$24 | +5.62% | |
| 5 | ORIC PHARMACEUTICALS INC ORIC | $78.9M | 0.20% | 6,572,700 | +0 | +0.00% | 0.19% | 2024-03-31 | $12 | ~$11 | +7.21% | |
| 6 | STANDARD BIOTOOLS INC LAB | $76.2M | 0.20% | 58,651,170 | +0 | +0.00% | 0.20% | 2024-03-31 | $1 | ~$3 | -52.03% | |
| 7 | INHIBRX BIOSCIENCES INC INBX | $60.2M | 0.16% | 1,787,705 | +0 | +0.00% | 0.07% | 2024-06-30 | $34 | ~$14 | +137.69% | |
| 8 | GINKGO BIOWORKS HOLDINGS INC DNA | $52.2M | 0.14% | 3,577,128 | +0 | +0.00% | 0.12% | 2024-09-30 | $15 | ~$8 | +78.90% | |
| 9 | ESTABLISHMENT LABS HLDGS INC | $14.1M | 0.04% | 343,465 | +0 | +0.00% | 0.04% | 2025-06-30 | $41 | ~$43 | -4.03% | |
| 10 | RALLYBIO CORP | $2.1M | 0.01% | 4,194,777 | +0 | +0.00% | 0.00% | 2021-09-30 | $0 | ~$18 | -97.16% |