PDFS PDF Solutions, Inc.
PDF Solutions, Inc. (PDFS) Institutional Ownership
What the institutions did with PDFS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 5.6M | 14.3% |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 2.1M | 5.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.7M | 4.3% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.5M | 3.7% |
| STATE STREET CORP | 1.4M | 3.6% |
| WASATCH ADVISORS LP | 1.4M | 3.5% |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 1.3M | 3.4% |
| Ranger Investment Management, L.P. | 1.1M | 3.0% |
| SNYDER CAPITAL MANAGEMENT L P | 1.0M | 2.7% |
| Jupiter Topco LLC | 927.8K | 2.4% |
| JPMORGAN CHASE & CO | 927.3K | 2.4% |
| GEODE CAPITAL MANAGEMENT, LLC | 918.0K | 2.4% |
| EMERALD ADVISERS, LLC | 884.3K | 2.3% |
| DIMENSIONAL FUND ADVISORS LP | 841.2K | 2.2% |
| JENNISON ASSOCIATES LLC | 716.1K | 1.8% |
| Atreides Management, LP | 658.5K | 1.7% |
| LOOMIS SAYLES & CO L P | 643.3K | 1.7% |
| Ophir Asset Management Pty Ltd | 607.3K | 1.6% |
| Point72 Asset Management, L.P. | 598.9K | 1.5% |
| EMERALD MUTUAL FUND ADVISERS TRUST | 566.4K | 1.5% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 554.2K | 1.4% |
| Samjo Management, LLC | 548.3K | 1.4% |
| Silverberg Bernstein Capital Management LLC | 465.8K | 1.2% |
| OBERWEIS ASSET MANAGEMENT INC/ | 426.4K | 1.1% |
| Invesco Ltd. | 422.9K | 1.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| JPMORGAN CHASE & CO | Increased | 14.7K | 927.3K | +912.6K |
| WASATCH ADVISORS LP | Increased | 507.7K | 1.4M | +873.0K |
| JENNISON ASSOCIATES LLC | New | 0 | 716.1K | +716.1K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 1.3M | 554.2K | -701.3K |
| BlackRock, Inc. | Increased | 4.9M | 5.6M | +684.2K |
| Atreides Management, LP | New | 0 | 658.5K | +658.5K |
| Point72 Asset Management, L.P. | New | 0 | 598.9K | +598.9K |
| Ophir Asset Management Pty Ltd | Reduced | 1.1M | 607.3K | -530.0K |
| OBERWEIS ASSET MANAGEMENT INC/ | New | 0 | 426.4K | +426.4K |
| Samjo Management, LLC | Reduced | 920.0K | 548.3K | -371.7K |
| Shannon River Fund Management LLC | New | 0 | 369.8K | +369.8K |
| SEGALL BRYANT & HAMILL, LLC | New | 0 | 347.2K | +347.2K |
| BAILLIE GIFFORD & CO | New | 0 | 345.5K | +345.5K |
| Divisar Capital Management LLC | Reduced | 623.4K | 307.9K | -315.5K |
| Invesco Ltd. | Increased | 144.3K | 422.9K | +278.6K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.4M | 1.7M | +276.1K |
| FIRST TRUST ADVISORS LP | New | 0 | 261.7K | +261.7K |
| GOLDMAN SACHS GROUP INC | Increased | 151.0K | 371.4K | +220.3K |
| T. Rowe Price Investment Management, Inc. | New | 0 | 203.2K | +203.2K |
| STATE STREET CORP | Increased | 1.2M | 1.4M | +194.1K |
| LOOMIS SAYLES & CO L P | Reduced | 827.1K | 643.3K | -183.8K |
| Penn Capital Management Company, LLC | Increased | 20.0K | 203.1K | +183.2K |
| Rockefeller Capital Management L.P. | Increased | 318 | 182.4K | +182.1K |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | Increased | 1.1M | 1.3M | +179.1K |
| Pillsbury Lake Capital LLC | Reduced | 270.7K | 117.9K | -152.8K |
| DAVENPORT & Co LLC | New | 0 | 150.4K | +150.4K |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | 328.9K | 193.5K | -135.4K |
| Ranger Investment Management, L.P. | Reduced | 1.3M | 1.1M | -130.0K |
| Roubaix Capital, LLC | Reduced | 181.9K | 53.5K | -128.4K |
| NEW YORK STATE COMMON RETIREMENT FUND | Increased | 36.9K | 164.6K | +127.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 802.2K | 918.0K | +115.7K |
| JANE STREET GROUP, LLC | New | 0 | 102.1K | +102.1K |
| Informed Momentum Co LLC | New | 0 | 88.1K | +88.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 38.8K | 126.4K | +87.6K |
| Inspire Advisors, LLC | Sold Out | 84.2K | 0 | -84.2K |
| OSAIC HOLDINGS, INC. | Increased | 10.8K | 93.4K | +82.5K |
| ArrowMark Colorado Holdings LLC | Reduced | 356.6K | 274.5K | -82.1K |
| Lisanti Capital Growth, LLC | Sold Out | 81.4K | 0 | -81.4K |
| HERALD INVESTMENT MANAGEMENT Ltd | Reduced | 200.0K | 119.7K | -80.3K |
| SEVEN GRAND MANAGERS, LLC | New | 0 | 75.0K | +75.0K |
| AMERIPRISE FINANCIAL INC | Increased | 52.3K | 121.0K | +68.6K |
| DEUTSCHE BANK AG\ | Increased | 65.8K | 132.5K | +66.7K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | 0 | 66.6K | +66.6K |
| Bouvel Investment Partners, LLC | New | 0 | 63.4K | +63.4K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 308.2K | 367.1K | +58.9K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 1.4M | 1.5M | +57.0K |
| GILDER GAGNON HOWE & CO LLC | New | 0 | 56.6K | +56.6K |
| PRELUDE CAPITAL MANAGEMENT, LLC | Reduced | 90.8K | 38.5K | -52.3K |
| CITADEL ADVISORS LLC | Increased | 34.6K | 84.4K | +49.8K |
| ENVESTNET ASSET MANAGEMENT INC | Increased | 48.5K | 96.8K | +48.4K |
| MORGAN STANLEY | Increased | 341.8K | 389.6K | +47.8K |
| Russell Investments Group, Ltd. | Reduced | 441.7K | 395.1K | -46.6K |
| NORTHERN TRUST CORP | Increased | 352.6K | 398.6K | +46.1K |
| MILLENNIUM MANAGEMENT LLC | New | 0 | 45.9K | +45.9K |
| Riverwater Partners LLC | New | 0 | 44.9K | +44.9K |
| CITIGROUP INC | Increased | 6.4K | 51.1K | +44.7K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 221.1K | 265.0K | +43.9K |
| NEEDHAM INVESTMENT MANAGEMENT LLC | Increased | 2.0M | 2.1M | +42.3K |
| LAZARD ASSET MANAGEMENT LLC | Sold Out | 36.3K | 0 | -36.3K |
| Squarepoint Ops LLC | Reduced | 130.9K | 95.3K | -35.6K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.