Institutional Ownership
Xencor Inc
CUSIP 98401F105COMXNCRQ1 2026
13D / 13G Filings
68
Schedule 13D/13G on record
Beneficial Filers
16
Distinct reporting persons
Largest Stake
18.6%
Max % of class reported
Institutional Holders
194
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
68 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Ecor1 Capital, LLC | 13G/A | 6.4% | — | SEC |
| 2 | Feb 17, 2026 | Biotechnology Value Fund L P | 13G/A | 10.0% | 7.13M | SEC |
| 3 | Feb 9, 2026 | State Street Corporation | 13G | 6.3% | 4.51M | SEC |
| 4 | Dec 3, 2025 | The Vanguard Group | 13G/A | 10.0% | 7.17M | SEC |
| 5 | Nov 14, 2025 | Rtw Investments, LP | 13G | 8.7% | 6.22M | SEC |
| 6 | Nov 14, 2025 | T. Rowe Price Associates, Inc. | 13G/A | 2.4% | 1.69M | SEC |
| 7 | Oct 31, 2025 | The Vanguard Group | 13G/A | 9.9% | 7.10M | SEC |
| 8 | Oct 17, 2025 | Biotechnology Value Fund L P | 13G | 6.5% | 4.62M | SEC |
| 9 | Aug 14, 2025 | Primecap Management Co/Ca/ | 13G/A | 14.8% | 10.53M | SEC |
| 10 | Jul 29, 2025 | The Vanguard Group | 13G/A | 12.1% | 8.62M | SEC |
58 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Xencor Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 13.04M | $157.21M |
| 2 | Primecap Management Co/Ca/ | 10.34M | $124.68M |
| 3 | Bvf Inc/Il | 7.13M | $86.03M |
| 4 | Rtw Investments, LP | 6.78M | $81.74M |
| 5 | Ra Capital Management, L.P. | 4.90M | $59.06M |
| 6 | State Street Corp | 4.35M | $52.49M |
| 7 | Tcg Crossover Management, LLC | 2.45M | $29.57M |
| 8 | Ecor1 Capital, LLC | 2.18M | $26.33M |
| 9 | Geode Capital Management, LLC | 1.82M | $21.90M |
| 10 | Morgan Stanley | 1.56M | $18.79M |