What does CUSIP 693282105 represent in this 13F holders report?

CUSIP 693282105 is the security identifier for PDFS - PDF SOLUTIONS INC - Common Stock, $0.00015 par value used to aggregate holder disclosures.

How many institutions held PDFS - PDF SOLUTIONS INC - Common Stock, $0.00015 par value in Q1 2019?

97 institutional investors reported PDFS - PDF SOLUTIONS INC - Common Stock, $0.00015 par value for Q1 2019. Use the holders table for investor-level position and value details.

PDF SOLUTIONS INC - Common Stock, $0.00015 par value (PDFS)

CUSIP: 693282105

Q1 2019 13F Holders as of 31 Mar 2019

Type / Class: Equity / Common Stock, $0.00015 par value
Shares outstanding: 39,660,784
Total 13F shares: 26,970,253
Share change: -982,900
Total reported value: $333,109,630
Put/Call ratio: 127%
Price per share: $12.35
Number of holders: 97
Value change: -$9,338,102
Number of buys: 41
Number of sells: 45

Quarterly Holders Quick Answers

What is CUSIP 693282105?
CUSIP 693282105 identifies PDFS - PDF SOLUTIONS INC - Common Stock, $0.00015 par value in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2019
Previous quarter: Q4 2018

Recent filing periods for CUSIP 693282105:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of PDFS - PDF SOLUTIONS INC - Common Stock, $0.00015 par value (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	10%	4,061,916	$34,241,000	—	31 Dec 2018	13F
OppenheimerFunds, Inc.	13F	Company	7.6%	3,005,359	$25,335,000	—	31 Dec 2018	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	7.4%	2,953,303	$24,896,000	—	31 Dec 2018	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	4.9%	1,948,829	$16,429,000	—	31 Dec 2018	13F
VIEX Capital Advisors, LLC	13F	Company	4.8%	1,885,101	$15,891,000	—	31 Dec 2018	13F
VANGUARD GROUP INC	13F	Company	4.7%	1,852,837	$15,620,000	—	31 Dec 2018	13F
SNYDER CAPITAL MANAGEMENT L P	13F	Company	3.3%	1,302,300	$10,978,000	—	31 Dec 2018	13F
NEEDHAM INVESTMENT MANAGEMENT LLC	13F	Company	3.3%	1,300,100	$10,960,000	—	31 Dec 2018	13F
Divisar Capital Management LLC	13F	Company	3%	1,170,051	$9,864,000	—	31 Dec 2018	13F
FORESTERS INVESTMENT MANAGEMENT COMPANY, INC.	13F	Company	2.2%	889,900	$7,502,000	—	31 Dec 2018	13F
Cowen Prime Services LLC	13F	Company	1.9%	744,071	$6,273,000	—	31 Dec 2018	13F
STATE STREET CORP	13F	Company	1.9%	740,755	$6,245,000	—	31 Dec 2018	13F
HARBER ASSET MANAGEMENT LLC	13F	Company	1.4%	556,386	$4,690,000	—	31 Dec 2018	13F
ROYCE & ASSOCIATES LP	13F	Company	1.2%	492,700	$4,153,000	—	31 Dec 2018	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	1.1%	434,276	$3,661,000	—	31 Dec 2018	13F
NORTHERN TRUST CORP	13F	Company	0.92%	364,479	$3,073,000	—	31 Dec 2018	13F
Toronado Partners, LLC	13F	Company	0.88%	350,012	$2,951,000	—	31 Dec 2018	13F
Bank of New York Mellon Corp	13F	Company	0.82%	326,354	$2,752,000	—	31 Dec 2018	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.76%	301,639	$2,542,000	—	31 Dec 2018	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.57%	225,344	$1,900,000	—	31 Dec 2018	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.41%	162,391	$1,369,000	—	31 Dec 2018	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.39%	155,350	$1,309,000	—	31 Dec 2018	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.38%	152,402	$1,285,000	—	31 Dec 2018	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.35%	138,000	$1,163,000	—	31 Dec 2018	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.35%	137,697	$1,161,000	—	31 Dec 2018	13F
Invesco Ltd.	13F	Company	0.34%	133,447	$1,125,000	—	31 Dec 2018	13F
PEAK6 Investments LLC	13F	Company	0.27%	108,946	$918,000	—	31 Dec 2018	13F
GROUP ONE TRADING LLC	13F	Company	0.25%	100,000	$843,000	—	31 Dec 2018	13F
Fondren Management LP	13F	Company	0.21%	85,000	$717,000	—	31 Dec 2018	13F
WOLVERINE TRADING, LLC	13F	Company	0.22%	86,087	$715,000	—	31 Dec 2018	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.21%	84,499	$712,000	—	31 Dec 2018	13F
RHUMBLINE ADVISERS	13F	Company	0.2%	80,150	$676,000	—	31 Dec 2018	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.18%	72,649	$612,000	—	31 Dec 2018	13F
TIAA CREF INVESTMENT MANAGEMENT LLC	13F	Company	0.15%	60,139	$507,000	—	31 Dec 2018	13F
Legal & General Group Plc	13F	Company	0.15%	58,144	$487,000	—	31 Dec 2018	13F
TEACHERS ADVISORS, LLC	13F	Company	0.14%	56,996	$480,000	—	31 Dec 2018	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.14%	55,796	$470,000	—	31 Dec 2018	13F
CITADEL ADVISORS LLC	13F	Company	0.14%	54,882	$463,000	—	31 Dec 2018	13F
BARROW HANLEY MEWHINNEY & STRAUSS LLC	13F	Company	0.13%	52,652	$444,000	—	31 Dec 2018	13F
TD ASSET MANAGEMENT INC	13F	Company	0.13%	50,463	$425,000	—	31 Dec 2018	13F
MORGAN STANLEY	13F	Company	0.13%	49,850	$420,000	—	31 Dec 2018	13F
Swiss National Bank	13F	Company	0.12%	49,200	$415,000	—	31 Dec 2018	13F
Assenagon Asset Management S.A.	13F	Company	0.12%	47,440	$400,000	—	31 Dec 2018	13F
DEUTSCHE BANK AG\	13F	Company	0.12%	46,839	$393,000	—	31 Dec 2018	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.12%	46,595	$393,000	—	31 Dec 2018	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.11%	45,000	$379,000	—	31 Dec 2018	13F
PRUDENTIAL FINANCIAL INC	13F	Company	0.11%	43,459	$366,000	—	31 Dec 2018	13F
AlphaOne Investment Services, LLC	13F	Company	0.11%	43,342	$365,000	—	31 Dec 2018	13F
Arizona State Retirement System	13F	Company	0.11%	42,745	$360,000	—	31 Dec 2018	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	0.09%	35,136	$296,000	—	31 Dec 2018	13F

Institutional Holders of PDF SOLUTIONS INC - Common Stock, $0.00015 par value (PDFS) as of Q1 2019

As of 31 Mar 2019, PDF SOLUTIONS INC - Common Stock, $0.00015 par value (PDFS) was held by 97 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 26,970,253 shares. The largest 10 holders included BlackRock Inc., OppenheimerFunds, Inc., PRICE T ROWE ASSOCIATES INC /MD/, DIMENSIONAL FUND ADVISORS LP, VANGUARD GROUP INC, VIEX Capital Advisors, LLC, NEEDHAM INVESTMENT MANAGEMENT LLC, SNYDER CAPITAL MANAGEMENT L P, Divisar Capital Management LLC, and Foresters Investment Management Company, Inc.. This page lists 97 institutional shareholders reporting positions in this security for the Q1 2019 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2019 vs Q4 2018 Across Filers

Q4 2018 holders

102

Q1 2019 holders

Holder diff

-5

Investor	Q4 2018 Shares	Q1 2019 Shares	Share Diff	Share Chg %	Q4 2018 Value $	Q1 2019 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.