PDF SOLUTIONS INC (PDFS) Institutional Shareholders
PDF SOLUTIONS INC (PDFS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $1.26B in PDFS holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of PDFS tracked by InsiderSet, reporting ownership valued at approximately $159.17M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $224.28M, representing an estimated gain of +40.90% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed PDFS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Wasatch Advisors Lp, Needham Investment Management Llc, and several other long-term asset managers with concentrated positions in PDF SOLUTIONS INC (PDFS).
This page ranks the largest institutional PDFS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
222
Total Reported Value
$1.26B
Largest Holder
Blackrock, Inc.
Largest Position
$159.17M
Insider Transactions (90d)
10
Latest Filing Quarter
Q2 2026
New Institutional Positions
138
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 4,866,177 | $159,172,648 | $224,282,098 | +$65,109,450 | +40.90% | |
| Wasatch Advisors Lp | 0.64% | 1,380,739 | $97,742,514 | $63,638,261 | -$34,104,253 | -34.89% | |
| Needham Investment Management Llc | 3.39% | 2,022,700 | $66,162,517 | $93,226,243 | +$27,063,726 | +40.90% | |
| Jennison Associates Llc | 0.03% | 716,075 | $50,690,949 | $33,003,897 | -$17,687,052 | -34.89% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,400,722 | $45,817,617 | $64,559,277 | +$18,741,660 | +40.90% | |
| Vanguard Capital Management Llc | 0.00% | 1,388,122 | $45,405,471 | $63,978,543 | +$18,573,072 | +40.90% | |
| Ranger Investment Management, L.P. | 3.03% | 1,279,630 | $41,856,697 | $58,978,147 | +$17,121,450 | +40.90% | |
| William Blair Investment Management, Llc | 0.14% | 1,255,559 | $41,069,335 | $57,868,714 | +$16,799,379 | +40.90% | |
| State Street Corp | 0.00% | 1,192,408 | $39,003,666 | $54,958,085 | +$15,954,419 | +40.90% | |
| Barrow Hanley Mewhinney & Strauss Llc | 0.12% | 1,140,547 | $37,307,292 | $52,567,811 | +$15,260,519 | +40.90% | |
| Ophir Asset Management Pty Ltd | 4.33% | 1,137,349 | $37,202,686 | $52,420,415 | +$15,217,729 | +40.90% | |
| Snyder Capital Management L P | 0.67% | 1,060,478 | $34,688,235 | $48,877,431 | +$14,189,196 | +40.90% | |
| Janus Henderson Group Plc | 0.02% | 1,035,666 | $33,877,471 | $47,733,846 | +$13,856,375 | +40.90% | |
| Silverberg Bernstein Capital Management Llc | 12.63% | 465,823 | $32,975,610 | $21,469,782 | -$11,505,828 | -34.89% | |
| Samjo Management, Llc | 13.01% | 919,955 | $30,091,728 | $42,400,726 | +$12,308,998 | +40.90% | |
| Emerald Advisers, Llc | 0.89% | 860,819 | $28,157,389 | $39,675,148 | +$11,517,759 | +40.90% | |
| Dimensional Fund Advisors Lp | 0.01% | 845,693 | $27,659,703 | $38,977,990 | +$11,318,287 | +40.92% | |
| Loomis Sayles & Co L P | 0.04% | 827,109 | $27,054,730 | $38,121,454 | +$11,066,724 | +40.90% | |
| Geode Capital Management, Llc | 0.00% | 802,223 | $26,246,199 | $36,974,458 | +$10,728,259 | +40.88% | |
| Divisar Capital Management Llc | 5.20% | 623,364 | $20,390,236 | $28,730,847 | +$8,340,611 | +40.90% | |
| Emerald Mutual Fund Advisers Trust | 0.94% | 594,610 | $19,449,693 | $27,405,575 | +$7,955,882 | +40.90% | |
| Russell Investments Group, Ltd. | 0.02% | 441,716 | $14,448,548 | $20,358,690 | +$5,910,142 | +40.90% | |
| Penn Capital Management Company, Llc | 0.91% | 203,136 | $14,394,106 | $9,362,538 | -$5,031,568 | -34.96% | |
| Arrowmark Colorado Holdings Llc | 0.31% | 356,620 | $11,665,040 | $16,436,616 | +$4,771,576 | +40.90% | |
| New York State Common Retirement Fund | 0.01% | 164,574 | $11,650,193 | $7,585,216 | -$4,064,977 | -34.89% | |
| Df Dent & Co Inc | 0.22% | 352,960 | $11,545,334 | $16,267,926 | +$4,722,592 | +40.90% | |
| Northern Trust Corp | 0.00% | 352,559 | $11,532,206 | $16,249,444 | +$4,717,238 | +40.90% | |
| Morgan Stanley | 0.00% | 341,780 | $11,179,627 | $15,752,640 | +$4,573,013 | +40.90% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | 328,905 | $10,758,483 | $15,159,231 | +$4,400,748 | +40.90% | |
| Davenport & Co Llc | 0.05% | 150,419 | $10,648,161 | $6,932,812 | -$3,715,349 | -34.89% | |
| Charles Schwab Investment Management Inc | 0.00% | 308,174 | $10,080,372 | $14,203,740 | +$4,123,368 | +40.90% | |
| Fmr Llc | 0.00% | 302,209 | $9,885,249 | $13,928,813 | +$4,043,564 | +40.91% | |
| Pillsbury Lake Capital Llc | 4.01% | 270,668 | $8,853,550 | $12,475,088 | +$3,621,538 | +40.90% | |
| Herald Investment Management Ltd | 1.15% | 119,667 | $8,462,850 | $5,515,452 | -$2,947,398 | -34.83% | |
| Vanguard Fiduciary Trust Co | 0.00% | 221,080 | $7,231,527 | $10,189,577 | +$2,958,050 | +40.90% | |
| Envestnet Asset Management Inc | 0.00% | 96,826 | $6,854,313 | $4,462,710 | -$2,391,603 | -34.89% | |
| Gem Investment Advisors, Llc | 3.12% | 211,052 | $6,462,412 | $9,727,387 | +$3,264,975 | +50.52% | |
| Bank Of New York Mellon Corp | 0.00% | 190,498 | $6,231,183 | $8,780,053 | +$2,548,870 | +40.91% | |
| Roubaix Capital, Llc | 2.78% | 181,937 | $5,951,159 | $8,385,476 | +$2,434,317 | +40.90% | |
| Principal Financial Group Inc | 0.00% | 156,515 | $5,119,606 | $7,213,776 | +$2,094,170 | +40.90% | |
| Goldman Sachs Group Inc | 0.00% | 151,048 | $4,940,780 | $6,961,802 | +$2,021,022 | +40.90% | |
| Rice Hall James & Associates, Llc | 0.27% | 147,782 | $4,833,949 | $6,811,272 | +$1,977,323 | +40.90% | |
| Invesco Ltd. | 0.00% | 144,340 | $4,721,361 | $6,652,631 | +$1,931,270 | +40.90% | |
| Bouvel Investment Partners, Llc | 1.01% | 63,352 | $4,484,688 | $2,919,894 | -$1,564,794 | -34.89% | |
| Squarepoint Ops Llc | 0.01% | 130,919 | $4,282,360 | $6,034,057 | +$1,751,697 | +40.90% | |
| Public Sector Pension Investment Board | 0.01% | 114,525 | $3,746,113 | $5,278,457 | +$1,532,344 | +40.90% | |
| Nuveen, Llc | 0.00% | 111,994 | $3,663,323 | $5,161,803 | +$1,498,480 | +40.90% | |
| Citigroup Inc | 0.00% | 51,061 | $3,614,608 | $2,353,401 | -$1,261,207 | -34.89% | |
| Ubs Group Ag | 0.00% | 101,285 | $3,313,032 | $4,668,226 | +$1,355,194 | +40.90% | |
| Bridge City Capital, Llc | 0.91% | 100,771 | $3,296,219 | $4,644,535 | +$1,348,316 | +40.90% |
Frequently asked questions about PDFS
Who owns the most PDFS stock?
The largest holders of PDFS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for PDF SOLUTIONS INC (PDFS).
Is PDFS widely held by superinvestors?
Many widely followed stocks like PDFS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly PDFS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.