PDF Solutions Ownership | Who Owns PDF Solutions?

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PDF Solutions Ownership Summary

PDF Solutions is owned by 54.95% institutional investors, 19.49% insiders, and 25.55% retail investors. Blackrock is the largest institutional shareholder, holding 12.49% of PDFS shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 4.72% of its assets in PDF Solutions shares.

PDFS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	PDF Solutions	54.95%	19.49%	25.55%
Sector	Technology Stocks	34.40%	12.94%	52.66%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	4.81M	12.49%	$174.87M
Blackrock funding, inc. /de	4.89M	12.37%	$139.38M
Vanguard group	3.09M	7.82%	$88.14M
Needham investment management	2.02M	5.16%	$52.12M
William blair investment management	1.36M	3.44%	$38.76M
Ranger investment management	1.17M	2.96%	$33.38M
State street	1.15M	2.93%	$29.59M
Samjo management	1.12M	2.86%	$28.94M
Snyder capital management l p	955.43K	2.42%	$27.26M
Emerald advisers	943.37K	2.39%	$26.91M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Samjo management	1.12M	11.05%	$28.94M
Silverberg bernstein capital management	473.88K	7.81%	$13.52M
Divisar capital management	684.08K	4.81%	$17.66M
Needham investment management	2.02M	3.64%	$52.12M
Roubaix capital	220.02K	2.68%	$6.28M
Ranger investment management	1.17M	2.29%	$33.38M
Millrace asset group	59.29K	2.09%	$2.16M
Kent lake pr	150.00K	1.96%	$3.87M
Cannell capital	337.31K	1.33%	$8.71M
Bridge city capital	102.32K	0.86%	$2.92M

Top Buyers

Holder	Shares	% Assets	Change
Arrowmark colorado	451.79K	0.22%	386.79K
Cannell capital	337.31K	1.33%	337.31K
Squarepoint ops	254.51K	0.01%	201.34K
Herald investment management	200.00K	0.69%	200.00K
Samjo management	1.12M	11.05%	184.93K

Top Sellers

Holder	Shares	% Assets	Change
Ophir asset management pty	-	-	-784.07K
Silvercrest asset management group	-	-	-290.64K
Segall bryant & hamill	-	-	-197.69K
Mak capital one	-	-	-160.02K
Readystate asset management lp	-	-	-148.60K

New Positions

Holder	Shares	% Assets	Change	Value
Cannell capital	337.31K	1.33%	337.31K	$8.71M
Herald investment management	200.00K	0.69%	200.00K	$5.16M
Lisanti capital growth	105.54K	0.71%	105.54K	$3.01M
Prelude capital management	101.05K	0.20%	101.05K	$2.61M
Boothbay fund management	57.44K	0.02%	57.44K	$1.48M

Sold Out

Holder	Change
Tortoise investment management	-2.00
Coldstream capital management	-7.00
Corecap advisors	-11.00
Clearstead trust	-13.00
Capital performance advisors llp	-17.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	134	-25.56%	21,706,868	-26.88%	54	0.96%	73	-33.03%	40	-21.57%
Sep 30, 2025	113	-29.81%	20,954,433	-24.97%	53	1.05%	67	-32.32%	31	-20.51%
Jun 30, 2025	166	-0.60%	28,916,246	5.23%	73	1.49%	102	15.91%	41	-25.45%
Mar 31, 2025	165	-7.30%	27,456,377	-2.89%	70	1.32%	87	-	54	-14.29%
Dec 31, 2024	85	-51.98%	13,383,828	-52.84%	34	0.64%	44	-48.84%	24	-62.50%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	1.86M	4.72%	-
Needham Aggressive Growth Retail	1.27M	3.24%	34.35K
Vanguard US Total Market Shares ETF	1.13M	2.88%	-
Vanguard Total Stock Mkt Idx Inv	1.09M	2.77%	-24.11K
Wasatch Ultra Growth	1.06M	2.70%	-
iShares Russell 2000 ETF	762.40K	1.93%	-
Vanguard Information Technology ETF	746.67K	1.91%	7.80K
Janus Henderson US Small Cap Growth	742.42K	1.90%	-
Janus Henderson Venture D	742.42K	1.90%	-
Ranger Small Cap	648.31K	1.66%	46.99K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 13, 2025	GUSTAFSON MICHAEL B	-	Buy	$145.88K
Feb 24, 2025	GUSTAFSON MICHAEL B	-	Buy	$92.24K
Feb 24, 2025	KIBARIAN JOHN KACHIG	PRESIDENT AND CEO	Buy	$783.32K
Feb 25, 2025	KIBARIAN JOHN KACHIG	PRESIDENT AND CEO	Buy	$345.89K
Dec 17, 2024	Strojwas Andrzej	CTO	Sell	$7.64K

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	-
2025 Q3	-	-
2025 Q2	1	-
2025 Q1	3	-
2024 Q4	-	4

PDFS Ownership FAQ

Who owns the most shares of PDF Solutions?

PDF Solutions’s largest shareholders are Blackrock (4.81M shares, 12.49%), Blackrock funding, inc. /de (4.89M shares, 12.37%), and Vanguard group (3.09M shares, 7.82%). Together, they hold 32.67% of PDF Solutions’s total shares outstanding.

Does Blackrock own PDF Solutions?

Yes, BlackRock owns 12.49% of PDF Solutions, totaling 4.81M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 174.87M$. In the last quarter, BlackRock decreased its holdings by -45.781K shares, a -0.94% change.

Who is PDF Solutions’s biggest shareholder by percentage of total assets invested?

Samjo management is PDF Solutions’s biggest shareholder by percentage of total assets invested, with 11.05% of its assets in 1.12M PDF Solutions shares, valued at 28.94M$.

Who is the top mutual fund holder of PDF Solutions shares?

iShares Core S&P Small-Cap ETF is the top mutual fund holder of PDF Solutions shares, with 4.72% of its total shares outstanding invested in 1.86M PDF Solutions shares.

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