13F Insight
DOSSIER · 13F Holders · Q1 2026Healthcare · Pharmaceutical PreparationsMega-capCrowded
XNCR

XENCOR INC

211 institutions still hold XENCOR INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 98401F105·Pharmaceutical Preparations·211 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 6.6%
vs prior quarter
13F value held
$856M
79.0% inst. owned
of float
Holders
211
+59 QoQ
filers reporting
Activity
+15 / −43
+817 added · −725 reduced
this quarter
Concentration
18.37%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

211 institutions reported XNCR in Q1 2026. BlackRock, Inc. leads at 18.4% of the visible book. +59 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$157M13.0M0.00%Q1 202602
PRIMECAP MANAGEMENT CO/CA/
CIK 0000763212
$125M10.3M0.10%Q1 202603
BVF INC/IL
CIK 0001056807
$109M7.1M3.68%Q4 202504
RTW INVESTMENTS, LP
CIK 0001493215
$82M6.8M0.81%Q1 202605
RA CAPITAL MANAGEMENT, L.P.
CIK 0001346824
$59M4.9M0.63%Q1 202606
STATE STREET CORP
CIK 0000093751
$52M4.4M0.00%Q1 202607
Vanguard Portfolio Management
CIK 0002100121
$42M3.5M0.00%Q1 202608
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$37M3.1M0.00%Q1 202609
TCG Crossover Management, LLC
CIK 0001839948
$30M2.5M0.85%Q1 202610
EcoR1 Capital, LLC
CIK 0001587114
$26M2.2M1.12%Q1 202611
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$22M1.8M0.00%Q1 202612
MORGAN STANLEY
CIK 0000895421
$19M1.6M0.00%Q1 202613
BAKER BROS. ADVISORS LP
CIK 0001263508
$17M1.1M0.10%Q4 202514
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$16M1.3M0.00%Q1 202615
UBS Group AG
CIK 0001610520
$13M1.1M0.00%Q1 202616
Legal & General Group Plc
CIK 0000764068
$13M1.1M0.00%Q1 202617
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$10M805K0.01%Q1 202618
GOLDMAN SACHS GROUP INC
CIK 0000886982
$9M764K0.00%Q1 202619
JOHNSON & JOHNSON
CIK 0000200406
$9M748K1.38%Q1 202620
NORTHERN TRUST CORP
CIK 0000073124· Index
$9M745K0.00%Q1 2026
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