PDF SolutionsPDFS
13F holders, Q1 2026 (March 31)208holders +20
34new positions
14sold out
3famous investors
$32.70avg. 13F price*
At the end of Q1 2026, 208 institutions reported holding PDF Solutions Inc. (PDFS) in their 13F filings, up 20 from Q4 2025. 34 opened new positions and 14 sold out. The largest holders were BlackRock, Inc. ($159.2M), Needham Investment Management LLC ($66.2M) and Vanguard Portfolio Management LLC ($45.8M). 3 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), Cliff Asness (0.0% of AQR Capital Management's portfolio) and Ken Fisher (0.0% of Fisher Asset Management's portfolio).
- Company
- PDF Solutions Inc.
- CUSIP
- 693282105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 34 | $59.7M |
| Exits | 14 | $11.4M |
All 13F filers, Q4 2025 → Q1 2026: 3,502,227 shares bought and 1,818,423 shares sold, net +1,683,804 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 208 holders
| BlackRock, Inc. | 0.00% | Reduce -0.4% | 4,866,177 | $159.2M |
| Needham Investment Management LLC | 3.38% | Add +2.9% | 2,022,700 | $66.2M |
| Vanguard Portfolio Management LLC | 0.00% | — | 1,400,722 | $45.8M |
| Vanguard Capital Management LLC | 0.00% | — | 1,388,122 | $45.4M |
| Ranger Investment Management, L.P. | 3.03% | Add +9.4% | 1,279,630 | $41.9M |
| William Blair Investment Management, LLC | 0.14% | Reduce -7.6% | 1,255,559 | $41.1M |
| State Street Corp. | 0.00% | Add +3.5% | 1,192,408 | $39.0M |
| Barrow Hanley Mewhinney & Strauss LLC | 0.12% | New | 1,140,547 | $37.3M |
| Ophir Asset Management Pty Ltd | 4.33% | Add +57.3% | 1,137,349 | $37.2M |
| Snyder Capital Management L P | 0.67% | Add +11.0% | 1,060,478 | $34.7M |
| Janus Henderson Group PLC | 0.02% | Add +13.5% | 1,035,666 | $33.9M |
| Samjo Management, LLC | 13.01% | Reduce -20.1% | 919,955 | $30.1M |
| Emerald Advisers, LLC | 0.89% | Reduce -8.8% | 860,819 | $28.2M |
| Dimensional Fund Advisors LP | 0.01% | Add +5.6% | 845,693 | $27.7M |
| Loomis Sayles & Co. L P | 0.04% | Add +77.8% | 827,109 | $27.1M |
| Geode Capital Management, LLC | 0.00% | Add +4.2% | 802,223 | $26.2M |
| Divisar Capital Management LLC | 5.20% | Reduce -18.0% | 623,364 | $20.4M |
| Emerald Mutual Fund Advisers Trust | 0.94% | No change | 594,610 | $19.4M |
| Wasatch Advisors LP | 0.11% | Reduce -2.8% | 507,737 | $16.6M |
| Silverberg Bernstein Capital Management LLC | 8.52% | Reduce -0.2% | 472,883 | $15.5M |
| Russell Investments Group, Ltd. | 0.02% | Add +8.4% | 441,716 | $14.4M |
| ArrowMark Colorado Holdings LLC | 0.31% | Reduce -27.7% | 356,620 | $11.7M |
| DF Dent & Co. Inc. | 0.22% | New | 352,960 | $11.5M |
| Northern Trust Corp. | 0.00% | Add +1.3% | 352,559 | $11.5M |
| Morgan Stanley | 0.00% | Reduce -14.4% | 341,780 | $11.2M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.02% | Reduce -15.3% | 328,905 | $10.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.4% | 308,174 | $10.1M |
| FMR LLC | 0.00% | Add +13.2% | 302,209 | $9.9M |
| Pillsbury Lake Capital LLC | 4.01% | Reduce -28.0% | 270,668 | $8.9M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 221,080 | $7.2M |
| HERALD INVESTMENT MANAGEMENT Ltd | 0.91% | Reduce -11.1% | 200,000 | $6.5M |
| Bank of New York Mellon Corp | 0.00% | Reduce -3.7% | 190,498 | $6.2M |
| Roubaix Capital, LLC | 2.78% | Reduce -17.3% | 181,937 | $6.0M |
| Principal Financial Group Inc. | 0.00% | Add +2.3% | 156,515 | $5.1M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -20.4% | 151,048 | $4.9M |
| Rice Hall James & Associates, LLC | 0.27% | Add +0.1% | 147,782 | $4.8M |
| Invesco Ltd. | 0.00% | Add +6.0% | 144,340 | $4.7M |
| Squarepoint Ops LLC | 0.01% | Reduce -39.8% | 130,919 | $4.3M |
| Public Sector Pension Investment Board | 0.01% | Add +3.4% | 114,525 | $3.7M |
| Nuveen, LLC | 0.00% | Add +1.2% | 111,994 | $3.7M |
| Gem Investment Advisors, LLC | 3.39% | No change | 105,526 | $3.5M |
| Brown Capital Management LLC | 0.48% | Reduce -16.6% | 104,322 | $3.4M |
| UBS Group AG | 0.00% | Add +60.6% | 101,285 | $3.3M |
| Bridge City Capital, LLC | 0.91% | Reduce -1.5% | 100,771 | $3.3M |
| Prelude Capital Management, LLC | 0.23% | Reduce -22.0% | 90,779 | $3.0M |
| Sei Investments Co. | 0.00% | Add +114.2% | 90,393 | $3.0M |
| Bank of America Corp. | 0.00% | Add +7.4% | 85,776 | $2.8M |
| Rhumbline Advisers | 0.00% | Add +2.5% | 84,547 | $2.8M |
| Inspire Advisors, LLC | 0.22% | New | 84,169 | $2.8M |
| Lisanti Capital Growth, LLC | 0.67% | Reduce -22.9% | 81,365 | $2.7M |
| Legal & General Group Plc | 0.00% | Reduce -8.6% | 74,387 | $2.4M |
| Raymond James Financial Inc. | 0.00% | Add +49.0% | 72,357 | $2.4M |
| Wells Fargo & Company | 0.00% | Reduce -16.8% | 67,161 | $2.2M |
| Deutsche Bank AG | 0.00% | Add +4.8% | 65,812 | $2.2M |
| LPL Financial LLC | 0.00% | Add +501.3% | 62,530 | $2.0M |
| Swiss National Bank | 0.00% | No change | 62,400 | $2.0M |
| Dana Investment Advisors, Inc. | 0.06% | Add +12.3% | 62,088 | $2.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +3.4% | 59,839 | $2.0M |
| Ameriprise Financial Inc. | 0.00% | Reduce -11.0% | 52,322 | $1.7M |
| Fisher Asset Management | 0.00% | Add +26.7% | 51,444 | $1.7M |
| Acadian Asset Management LLC | 0.00% | Reduce -4.1% | 50,988 | $1.7M |
| AQR Capital Management | 0.00% | Add +5.1% | 48,572 | $1.6M |
| Envestnet Asset Management Inc. | 0.00% | Add +15.0% | 48,467 | $1.6M |
| Legato Capital Management LLC | 0.13% | Reduce -18.3% | 43,760 | $1.4M |
| Voya Investment Management LLC | 0.00% | Reduce -22.0% | 41,191 | $1.3M |
| Boothbay Fund Management, LLC | 0.03% | Reduce -28.2% | 39,824 | $1.3M |
| Alliancebernstein L.P. | 0.00% | Add +2.7% | 44,980 | $1.3M |
| Creative Planning | 0.00% | Add +3.5% | 38,927 | $1.3M |
| Susquehanna International Group, LLP | 0.00% | Add +146.8% | 38,752 | $1.3M |
| New York State Common Retirement Fund | 0.00% | Add +4.2% | 36,911 | $1.2M |
| Lazard Asset Management LLC | 0.00% | New | 36,349 | $1.2M |
| Victory Capital Management Inc. | 0.00% | No change | 36,300 | $1.2M |
| Citadel Advisors | 0.00% | Reduce -13.2% | 34,588 | $1.1M |
| Prudential Financial Inc. | 0.00% | Add +10.1% | 33,562 | $1.1M |
| Williams Jones Wealth Management, LLC. | 0.01% | No change | 32,000 | $1.0M |
| California State Teachers Retirement System | 0.00% | Reduce -0.8% | 30,707 | $1.0M |
| Gsa Capital Partners LLP | 0.06% | Add +13.6% | 30,378 | $994K |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 25,033 | $820K |
| Crown Advisors Management, Inc. | 0.54% | New | 25,000 | $817K |
| Kings Path Partners LLC | 0.28% | No change | 24,500 | $801K |
| M&T Bank Corp | 0.00% | Add +19.0% | 23,996 | $784K |
| T. Rowe Price Associates Inc. | 0.00% | Add +19.5% | 22,884 | $749K |
| Campbell & CO Investment Adviser LLC | 0.04% | New | 22,117 | $723K |
| Quantinno Capital Management LP | 0.00% | Add +17.5% | 21,657 | $708K |
| Thrivent Financial for Lutherans | 0.00% | Reduce -2.9% | 21,363 | $699K |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 21,145 | $692K |
| Assenagon Asset Management S.A. | 0.00% | Reduce -3.9% | 20,503 | $671K |
| Penn Capital Management Company, LLC | 0.05% | No change | 19,976 | $653K |
| Numerai GP LLC | 0.06% | Add +161.3% | 19,573 | $640K |
| Federated Hermes, Inc. | 0.00% | No change | 19,300 | $631K |
| Vident Advisory, LLC | 0.01% | New | 19,211 | $628K |
| Man Group plc | 0.00% | New | 18,777 | $614K |
| MetLife Investment Management, LLC | 0.00% | No change | 18,692 | $611K |
| XTX Topco Ltd | 0.01% | New | 18,301 | $599K |
| CVA Family Office, LLC | 0.06% | No change | 17,774 | $581K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +2.3% | 16,418 | $570K |
| CenterBook Partners LP | 0.03% | Reduce -49.5% | 17,405 | $569K |
| State of Alaska, Department of Revenue | 0.01% | Reduce -1.9% | 17,253 | $563K |
| Natixis Advisors, LLC | 0.00% | Add +5.9% | 17,019 | $557K |
| Illinois Municipal Retirement Fund | 0.01% | Add +11.7% | 16,385 | $536K |
"% of holder's portfolio" is PDFS's weight in each manager's 13F, not the share of PDF Solutions Inc. the manager owns.