13F Insight
DOSSIER · 13F Holders · Q1 2026CyclicalNet sold
CRBU

CARIBOU BIOSCIENCES INC

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

CUSIP 142038108·138 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 5.8%
vs prior quarter
13F value held
$56M
56.0% inst. owned
of float
Holders
138
-24 QoQ
filers reporting
Activity
+55 / −78
+841 added · −681 reduced
this quarter
Concentration
14.89%
PFIZER INC #1
top holder share
AI Holders Summary · Q1 2026

138 institutions reported CRBU in Q1 2026. PFIZER INC leads at 14.9% of the visible book. -24 net institutions QoQ — distribution reading.

Top holders

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

#HolderValueShares% port.Quarter
01
PFIZER INC
CIK 0000078003
$8M4.7M3.50%Q1 202602
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$7M3.8M0.00%Q1 202603
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$5M2.6M0.01%Q1 202604
Kynam Capital Management, LP
CIK 0001907884
$5M2.5M0.29%Q1 202605
BlackRock, Inc.
CIK 0002012383
$4M2.1M0.00%Q1 202606
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$3M1.8M0.00%Q1 202607
BANK OF AMERICA CORP /DE/
CIK 0000070858
$2M1.3M0.00%Q1 202608
Aberdeen Group plc
CIK 0001716774
$2M1.2M0.00%Q1 202609
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$2M1.1M0.00%Q1 202610
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$2M1.0M0.00%Q1 202611
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2M1.0M0.00%Q1 202612
PFM Health Sciences, LP
CIK 0001442756
$2M958K0.17%Q1 202613
MACKENZIE FINANCIAL CORP
CIK 0000919859
$2M943K0.00%Q1 202614
TWO SIGMA ADVISERS, LP
CIK 0001478735
$2M1.1M0.00%Q4 202515
MARSHALL WACE, LLP
CIK 0001318757
$1M881K0.00%Q4 202516
FMR LLC
CIK 0000315066
$1M724K0.00%Q1 202617
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$1M673K0.00%Q1 202618
MAVERICK CAPITAL LTD
CIK 0000934639
$1M653K0.01%Q1 202619
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
CIK 0000884546· Index
$1M560K0.00%Q1 202620
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$988,224520K0.00%Q1 2026
Page 1 of 7
118 more holders available. Log in →