DOSSIER · 13F Holders · Q1 2026
PDFS

PDF SOLUTIONS INC

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

CUSIP 693282105·228 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$881M
visible holders
Holders
228
filers reporting
Concentration
18.06%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

228 institutions reported PDFS in Q1 2026. BlackRock, Inc. leads at 18.1% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$159M4.9M0.00%Q1 2026
02
WASATCH ADVISORS LP
CIK 0000814133
$98M1.4M0.64%Q2 2026
03
NEEDHAM INVESTMENT MANAGEMENT LLC
CIK 0001167212
$56M2.0M3.54%Q4 2025
04
Vanguard Portfolio Management
CIK 0002100121· Index
$46M1.4M0.00%Q1 2026
05
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$45M1.4M0.00%Q1 2026
06
Ranger Investment Management, L.P.
CIK 0001319691
$42M1.3M3.03%Q1 2026
07
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 0001644956
$41M1.3M0.14%Q1 2026
08
STATE STREET CORP
CIK 0000093751
$39M1.2M0.00%Q1 2026
09
BARROW HANLEY MEWHINNEY & STRAUSS LLC
CIK 0000313028
$37M1.1M0.12%Q1 2026
10
Ophir Asset Management Pty Ltd
CIK 0001844640
$37M1.1M4.33%Q1 2026
11
SNYDER CAPITAL MANAGEMENT L P
CIK 0001050477
$35M1.1M0.67%Q1 2026
12
JANUS HENDERSON GROUP PLC
CIK 0001274173
$34M1.0M0.02%Q1 2026
13
Silverberg Bernstein Capital Management LLC
CIK 0002007880
$33M466K12.63%Q2 2026
14
Samjo Management, LLC
CIK 0001986590
$30M920K13.01%Q1 2026
15
EMERALD ADVISERS, LLC
CIK 0001015083
$28M861K0.89%Q1 2026
16
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$28M846K0.01%Q1 2026
17
LOOMIS SAYLES & CO L P
CIK 0000312348
$27M827K0.04%Q1 2026
18
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$26M802K0.00%Q1 2026
19
Divisar Capital Management LLC
CIK 0001645721
$20M623K5.20%Q1 2026
20
EMERALD MUTUAL FUND ADVISERS TRUST
CIK 0001352895
$19M595K0.94%Q1 2026
Page 1 of 12
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Insiders at PDF SOLUTIONS INC
Michaels KimonRaza AdnanStrojwas AndrzejBronson Joseph RChan Chi-FoonErba NancyGustafson Michael BLi Ye Jane