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 $2.70B 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 $392.91M in its June 30, 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 $232.95M, representing an estimated loss of -40.71% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 47% of the total disclosed PDFS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Needham Investment Management Llc, Vanguard Capital 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
269
Total Reported Value
$2.70B
Largest Holder
Blackrock, Inc.
Largest Position
$392.91M
Insider Transactions (90d)
11
Latest Filing Quarter
Q2 2026
New Institutional Positions
101
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 5,550,335 | $392,908,214 | $232,947,560 | -$159,960,654 | -40.71% | |
| Needham Investment Management Llc | 4.40% | 2,065,000 | $146,181,350 | $86,668,050 | -$59,513,300 | -40.71% | |
| Vanguard Capital Management Llc | 0.00% | 1,664,256 | $117,812,682 | $69,848,824 | -$47,963,858 | -40.71% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,457,748 | $103,193,981 | $61,181,684 | -$42,012,297 | -40.71% | |
| State Street Corp | 0.00% | 1,386,498 | $98,150,193 | $58,191,321 | -$39,958,872 | -40.71% | |
| Wasatch Advisors Lp | 0.64% | 1,380,739 | $97,742,514 | $57,949,616 | -$39,792,898 | -40.71% | |
| Barrow Hanley Mewhinney & Strauss Llc | 0.28% | 1,319,627 | $93,416,395 | $55,384,745 | -$38,031,650 | -40.71% | |
| Ranger Investment Management, L.P. | 5.15% | 1,149,647 | $81,383,511 | $48,250,685 | -$33,132,826 | -40.71% | |
| Snyder Capital Management L P | 1.26% | 1,033,997 | $73,196,648 | $43,396,854 | -$29,799,794 | -40.71% | |
| Geode Capital Management, Llc | 0.00% | 917,962 | $64,996,718 | $38,526,865 | -$26,469,853 | -40.72% | |
| Emerald Advisers, Llc | 1.47% | 884,294 | $62,599,172 | $37,113,819 | -$25,485,353 | -40.71% | |
| Jpmorgan Chase & Co | 0.00% | 927,267 | $61,125,440 | $38,917,396 | -$22,208,044 | -36.33% | |
| Dimensional Fund Advisors Lp | 0.01% | 841,186 | $59,537,326 | $35,304,576 | -$24,232,750 | -40.70% | |
| Jennison Associates Llc | 0.03% | 716,075 | $50,690,949 | $30,053,668 | -$20,637,281 | -40.71% | |
| Atreides Management, Lp | 0.42% | 658,536 | $46,617,763 | $27,638,756 | -$18,979,007 | -40.71% | |
| Loomis Sayles & Co L P | 0.06% | 643,268 | $45,536,916 | $26,997,958 | -$18,538,958 | -40.71% | |
| Ophir Asset Management Pty Ltd | 3.54% | 607,343 | $42,993,811 | $25,490,186 | -$17,503,625 | -40.71% | |
| Point72 Asset Management, L.P. | 0.06% | 598,902 | $42,396,273 | $25,135,917 | -$17,260,356 | -40.71% | |
| Emerald Mutual Fund Advisers Trust | 1.41% | 566,429 | $40,097,509 | $23,773,025 | -$16,324,484 | -40.71% | |
| William Blair Investment Management, Llc | 0.12% | 554,226 | $39,233,659 | $23,260,865 | -$15,972,794 | -40.71% | |
| Samjo Management, Llc | 13.25% | 548,285 | $38,813,095 | $23,011,521 | -$15,801,574 | -40.71% | |
| Janus Henderson Group Plc | 0.02% | 1,035,666 | $33,877,471 | $43,466,902 | +$9,589,431 | +28.31% | |
| Silverberg Bernstein Capital Management Llc | 12.63% | 465,823 | $32,975,610 | $19,550,591 | -$13,425,019 | -40.71% | |
| Oberweis Asset Management Inc/ | 0.62% | 426,400 | $30,184,856 | $17,896,008 | -$12,288,848 | -40.71% | |
| Invesco Ltd. | 0.00% | 422,931 | $29,939,286 | $17,750,414 | -$12,188,872 | -40.71% | |
| Northern Trust Corp | 0.00% | 398,614 | $28,217,883 | $16,729,830 | -$11,488,053 | -40.71% | |
| Russell Investments Group, Ltd. | 0.02% | 395,078 | $27,967,612 | $16,581,424 | -$11,386,188 | -40.71% | |
| Morgan Stanley | 0.00% | 389,554 | $27,576,672 | $16,349,581 | -$11,227,091 | -40.71% | |
| Goldman Sachs Group Inc | 0.00% | 371,392 | $26,290,839 | $15,587,322 | -$10,703,517 | -40.71% | |
| Shannon River Fund Management Llc | 2.34% | 369,776 | $26,176,443 | $15,519,499 | -$10,656,944 | -40.71% | |
| Charles Schwab Investment Management Inc | 0.00% | 367,090 | $25,986,301 | $15,406,767 | -$10,579,534 | -40.71% | |
| Df Dent & Co Inc | 0.48% | 354,951 | $25,127,000 | $14,897,293 | -$10,229,707 | -40.71% | |
| Segall Bryant & Hamill, Llc | 0.29% | 347,244 | $24,581,403 | $14,573,831 | -$10,007,572 | -40.71% | |
| Baillie Gifford & Co | 0.02% | 345,472 | $24,455,963 | $14,499,460 | -$9,956,503 | -40.71% | |
| Fmr Llc | 0.00% | 310,389 | $21,972,453 | $13,027,026 | -$8,945,427 | -40.71% | |
| Divisar Capital Management Llc | 5.02% | 307,879 | $21,794,754 | $12,921,682 | -$8,873,072 | -40.71% | |
| Arrowmark Colorado Holdings Llc | 0.81% | 274,537 | $19,434,474 | $11,522,318 | -$7,912,156 | -40.71% | |
| Vanguard Fiduciary Trust Co | 0.00% | 264,958 | $18,756,377 | $11,120,287 | -$7,636,090 | -40.71% | |
| First Trust Advisors Lp | 0.01% | 261,686 | $18,524,751 | $10,982,961 | -$7,541,790 | -40.71% | |
| Bank Of New York Mellon Corp | 0.00% | 208,318 | $14,746,816 | $8,743,106 | -$6,003,710 | -40.71% | |
| Penn Capital Management Company, Llc | 0.91% | 203,136 | $14,394,106 | $8,525,618 | -$5,868,488 | -40.77% | |
| T. Rowe Price Investment Management, Inc. | 0.01% | 203,163 | $14,382,000 | $8,526,751 | -$5,855,249 | -40.71% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.03% | 193,520 | $13,699,281 | $8,122,034 | -$5,577,247 | -40.71% | |
| Principal Financial Group Inc | 0.01% | 183,845 | $13,014,388 | $7,715,975 | -$5,298,413 | -40.71% | |
| Rockefeller Capital Management L.P. | 0.02% | 182,442 | $12,915,068 | $7,657,091 | -$5,257,977 | -40.71% | |
| New York State Common Retirement Fund | 0.01% | 164,574 | $11,650,193 | $6,907,171 | -$4,743,022 | -40.71% | |
| Rice Hall James & Associates, Llc | 0.56% | 163,000 | $11,538,770 | $6,841,110 | -$4,697,660 | -40.71% | |
| Davenport & Co Llc | 0.05% | 150,419 | $10,648,161 | $6,313,085 | -$4,335,076 | -40.71% | |
| Deutsche Bank Ag\ | 0.00% | 132,536 | $9,382,224 | $5,562,536 | -$3,819,688 | -40.71% | |
| Public Sector Pension Investment Board | 0.02% | 129,443 | $9,163,270 | $5,432,723 | -$3,730,547 | -40.71% |
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.