PDF SOLUTIONS INC

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PDFS·693282105·US·Common Stock·Technology - Software - Application-13D/G

PDFS (PDF SOLUTIONS INC) is held by 100 institutional investors as of Q1 2026. Largest holders: BlackRock, Inc. ($159.2M), VANGUARD PORTFOLIO MANAGEMENT LLC ($45.8M), VANGUARD CAPITAL MANAGEMENT LLC ($45.4M). Net institutional sentiment: Mixed. In Q1 2026, 1 member of Congress and 63 funds bought PDFS.

100

Holders

(10 Elite)

$668.5M

Total Value

64% (98)

Consensus

63 buying - 35 selling

13F: Mar 31, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)

Insider (Form 4)

Activist (13D/13G)

Congressional (STOCK Act)

Holder Quality

★★★★★

Elite

★★★★

Strong

★★★

Solid

★★

Below

★

Weak

Held by 100 funds

10 elite

Who's Trading

ActivistAAAdvantest America, Inc.0.0%May 27, 2026

ActivistNINeedham Investment Management L.L.C.5.1%May 14, 2026

ActivistThe Vanguard Group0.0%Mar 27, 2026

ActivistKJKIBARIAN JOHN KACHIG6.5%Feb 17, 2026

CongressAMArjun ModySale $1,001 - $15,000Jan 30, 2026

CongressDonald J. TrumpBuy $15,001 - $50,000May 29, 2025

CongressDonald J. TrumpSale $15,001 - $50,000Apr 28, 2025

CongressDonald J. TrumpBuy $1,001 - $15,000Apr 10, 2025

CongressDonald J. TrumpBuy $15,001 - $50,000Mar 27, 2025

CongressDonald J. TrumpSale $1,001 - $15,000Feb 24, 2025

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Top Holders (100)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Decreased	4.9M(-0.4%)	$159.2M	0.0%	+101.96%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	1.4M	$45.8M	0.0%	+69.53%	40
VAVANGUARD CAPITAL MANAGEMENT LLC	New	1.4M	$45.4M	0.0%	+69.53%	40
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	Decreased	1.3M(-7.6%)	$41.1M	0.1%	+118.87%	0
STATE STREET CORP	Increased	1.2M(+3.5%)	$39M	0.0%	+73.91%	30
BARROW HANLEY MEWHINNEY & STRAUSS LLC	New	1.1M	$37.3M	0.1%	+69.53%	48
Janus Henderson Group Ltd.	Increased	1M(+13.5%)	$33.9M	0.0%	+62.30%	33
DIMENSIONAL FUND ADVISORS LP	Increased	845,693(+5.6%)	$27.7M	0.0%	+36.77%	30
LOOMIS SAYLES & CO L P	Increased	827,109(+77.8%)	$27.1M	0.0%	+90.14%	44
GEODE CAPITAL MANAGEMENT, LLC	Increased	802,223(+4.2%)	$26.2M	0.0%	+181.45%	30
WASATCH ADVISORS LP	Decreased	507,737(-2.8%)	$16.6M	0.1%	+21.53%	0
Russell Investments Group, Ltd.	Increased	441,716(+8.4%)	$14.4M	0.0%	+118.61%	30
NORTHERN TRUST CORP	Increased	352,559(+1.3%)	$11.5M	0.0%	+243.85%	28
MORGAN STANLEY	Decreased	341,780(-14.4%)	$11.2M	0.0%	+71.25%	0
Connor, Clark & Lunn Investment Management Ltd.	Decreased	328,905(-15.3%)	$10.8M	0.0%	+114.83%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	308,174(+0.4%)	$10.1M	0.0%	+223.01%	28
FMR LLC	Increased	302,209(+13.2%)	$9.9M	0.0%	+118.05%	31
VFVANGUARD FIDUCIARY TRUST CO	New	221,080	$7.2M	0.0%	+69.53%	38
Bank of New York Mellon Corp	Decreased	190,498(-3.7%)	$6.2M	0.0%	+136.09%	0
PRINCIPAL FINANCIAL GROUP INC	Increased	156,515(+2.3%)	$5.1M	0.0%	+181.79%	28

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