13F Insight
DOSSIER · 13F Holders · Q1 2026Mega-capCrowded
TOI

THE ONCOLOGY INSTITUTE INC

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

CUSIP 68236X100·117 13F holders·last filed Mar 31, 2026
Market cap
—
▲ 9.5%
vs prior quarter
13F value held
$101M
46.0% inst. owned
of float
Holders
117
+61 QoQ
filers reporting
Activity
+8 / −91
+880 added · −858 reduced
this quarter
Concentration
13.39%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

117 institutions reported TOI in Q1 2026. BlackRock, Inc. leads at 13.4% of the visible book. +61 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
$14M4.4M0.00%Q1 202602
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 0001009258
$12M3.4M0.15%Q4 202503
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$11M3.5M0.00%Q1 202604
Kanen Wealth Management LLC
CIK 0001681614
$9M2.8M3.07%Q1 202605
JOSH ARNOLD INVESTMENT CONSULTANT, LLC
CIK 0001911348
$8M2.5M6.47%Q1 202606
BALYASNY ASSET MANAGEMENT L.P.
CIK 0001218710
$6M1.8M0.01%Q1 202607
WEXFORD CAPITAL LP
CIK 0001048462
$5M1.5M1.05%Q4 202508
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$5M1.8M0.00%Q1 202609
CenterBook Partners LP
CIK 0001872738
$5M1.6M0.26%Q1 202610
STATE STREET CORP
CIK 0000093751
$4M1.5M0.00%Q1 202611
GOLDMAN SACHS GROUP INC
CIK 0000886982
$4M1.4M0.00%Q1 202612
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$3M903K0.00%Q1 202613
Vanguard Portfolio Management
CIK 0002100121
$3M863K0.00%Q1 202614
BRC Group Holdings, Inc.
CIK 0001464790
$2M663K1.01%Q4 202515
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$2M727K0.00%Q1 202616
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$2M629K0.00%Q1 202617
Ensign Peak Advisors, Inc
CIK 0001454984
$2M627K0.00%Q1 202618
UBS Group AG
CIK 0001610520
$2M575K0.00%Q1 202619
NORTHERN TRUST CORP
CIK 0000073124· Index
$2M558K0.00%Q1 202620
CITADEL ADVISORS LLC
CIK 0001423053
$2M477K0.00%Q4 2025
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