PDF Solutions Ownership | Who Owns PDF Solutions?

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PDF Solutions Ownership Summary

PDF Solutions is owned by 73.86% institutional investors, 19.52% insiders, and 6.62% 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 4.79% of its assets in PDF Solutions shares.

PDFS Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	PDF Solutions	73.86%	19.52%	6.62%
Sector	Technology Stocks	144.02%	12.52%	-56.54%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	4.81M	12.49%	$174.87M
Blackrock funding, inc. /de	4.80M	12.26%	$102.57M
Vanguard group	3.17M	8.20%	$85.92M
Needham investment management	1.91M	4.89%	$40.91M
Wasatch advisors lp	1.19M	3.04%	$25.47M
William blair investment management	1.19M	3.03%	$25.38M
State street	1.12M	2.92%	$40.91M
Emerald advisers	954.36K	2.44%	$20.40M
Samjo management	935.79K	2.39%	$20.01M
Dimensional fund advisors lp	910.31K	2.35%	$24.65M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Samjo management	935.79K	8.44%	$20.01M
Silverberg bernstein capital management	418.78K	6.14%	$8.95M
Divisar capital management	620.71K	3.65%	$16.81M
Needham investment management	1.91M	3.26%	$40.91M
Millrace asset group	59.29K	2.09%	$2.16M
Ranger investment management	886.81K	1.52%	$24.01M
Emerald mutual fund advisers trust	581.41K	0.76%	$12.43M
Emerald advisers	954.36K	0.75%	$20.40M
Bridge city capital	83.75K	0.50%	$1.79M
Mak capital one	160.02K	0.49%	$3.42M

Top Buyers

Holder	Shares	% Assets	Change
Mak capital one	160.02K	0.49%	160.02K
Rice hall james & associates	91.69K	0.11%	91.69K
Connor, clark & lunn investment management	341.23K	0.03%	91.07K
Silverberg bernstein capital management	418.78K	6.14%	90.47K
Qube research	156.76K	0.00%	69.19K

Top Sellers

Holder	Shares	% Assets	Change
Ophir asset management pty	-	-	-784.07K
Silvercrest asset management group	-	-	-290.64K
Morgan stanley	467.55K	0.00%	-188.13K
Readystate asset management lp	-	-	-148.60K
Thrivent financial for lutherans	-	-	-144.51K

New Positions

Holder	Shares	% Assets	Change	Value
Mak capital one	160.02K	0.49%	160.02K	$3.42M
Rice hall james & associates	91.69K	0.11%	91.69K	$1.96M
Arrowmark colorado	65.00K	0.03%	65.00K	$1.39M
Walleye capital	46.60K	0.00%	46.60K	$996.39K
Loomis sayles & co l p	41.55K	0.00%	41.55K	$888.25K

Sold Out

Holder	Change
Coldstream capital management	-7.00
Ifp advisors	-9.00
Allworth financial lp	-10.00
Corecap advisors	-11.00
Capital performance advisors llp	-17.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Sep 30, 2024	177	1.72%	28,382,195	1.55%	73	1.40%	86	-	64	-1.54%
Jun 30, 2024	171	-7.57%	27,939,319	-0.23%	72	1.37%	84	13.51%	65	-15.58%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Core S&P Small-Cap ETF	1.88M	4.79%	334.00
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%	-
Vanguard Information Technology ETF	746.67K	1.91%	7.80K
iShares Russell 2000 ETF	746.07K	1.91%	-14.18K
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 Q3	-	-
2025 Q2	1	-
2025 Q1	3	-
2024 Q4	-	4
2024 Q3	-	-

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 (4.8M shares, 12.26%), and Vanguard group (3.17M shares, 8.20%). Together, they hold 32.94% 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 8.44% of its assets in 935.79K PDF Solutions shares, valued at 20.01M$.

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 4.79% of its total shares outstanding invested in 1.88M PDF Solutions shares.

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