DOSSIER · 13F Holders · Q1 2026
DH

DEFINITIVE HEALTHCARE CORP

119 institutions still hold DEFINITIVE HEALTHCARE CORP as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 24477E103·119 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$107M
visible holders
Holders
119
filers reporting
Concentration
71.63%
ADVENT INTERNATIONAL, L.P. #1
top holder share
AI Holders Summary · Q1 2026

119 institutions reported DH in Q1 2026. ADVENT INTERNATIONAL, L.P. leads at 71.6% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
ADVENT INTERNATIONAL, L.P.
CIK 0001034196
$77M62.5M1.81%Q1 2026
02
GOLDMAN SACHS GROUP INC
CIK 0000886982
$7M6.0M0.00%Q1 2026
03
D. E. Shaw & Co., Inc.
CIK 0001009207
$6M2.1M0.00%Q4 2025
04
BlackRock, Inc.
CIK 0002012383
$4M3.0M0.00%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$2M1.9M0.00%Q1 2026
06
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$2M1.7M0.00%Q1 2026
07
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$1M1.2M0.00%Q1 2026
08
STATE STREET CORP
CIK 0000093751
$1M856K0.00%Q1 2026
09
CITADEL ADVISORS LLC
CIK 0001423053
$867K302K0.00%Q4 2025
10
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$863K702K0.00%Q1 2026
11
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$726K590K0.00%Q1 2026
12
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$629K511K0.00%Q1 2026
13
NORTHERN TRUST CORP
CIK 0000073124· Index
$536K436K0.00%Q1 2026
14
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$528K429K0.00%Q1 2026
15
MORGAN STANLEY
CIK 0000895421
$522K424K0.00%Q1 2026
16
GSA CAPITAL PARTNERS LLP
CIK 0001362033
$413K336K0.03%Q1 2026
17
BARCLAYS PLC
CIK 0000312069
$402K326K0.00%Q1 2026
18
JACOBS LEVY EQUITY MANAGEMENT, INC
CIK 0000884414
$368K299K0.00%Q1 2026
19
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$354K123K0.00%Q1 2026
20
Vanguard Portfolio Management
CIK 0002100121· Index
$353K287K0.00%Q1 2026
Page 1 of 6
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Insiders at DEFINITIVE HEALTHCARE CORP
Paris JonathanCoop KevinHamood Samuel AStephenson Scott GWinters Kathleen AKrantz Jason RonaldGraboske BenjaminHeller Casey