PDFS · Pdf Solutions Inc · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding PDFS
All superinvestors →Holder Concentration
Across 284 13F filersWho Holds PDFS
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 283 filers, like-for-like change +20.9%; actively managed books +22.1%; index-like books +18.1%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 61.0% | 151 | +15.2% |
| Exempt adviser | 0.3% | 3 | +28.6% |
| Adviser | 2.9% | 7 | +276.0% |
| Bank | 8.6% | 19 | +61.7% |
| Insurer | 0.6% | 2 | +16.6% |
| Broker-dealer | 0.2% | 2 | +3.8% |
| Benefit plan | 0.2% | 4 | +75.4% |
| Non-US | 1.2% | 10 | +8.0% |
| Holding company | 17.6% | 8 | +18.7% |
| Unknown | 7.4% | 77 | +10.2% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 30.6% | 34 | +18.1% |
| Systematic-like | 2.2% | 16 | +165.6% |
| Concentrated | 5.8% | 42 | -1.6% |
| Diversified active | 61.3% | 191 | +22.5% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 55.2% | 159 | +26.3% |
| Medium turnover | 25.1% | 63 | +10.8% |
| High turnover | 7.8% | 39 | +59.5% |
| Unknown | 11.9% | 22 | +3.7% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 14.3% | 38 | -4.9% |
| Medium horizon | 18.7% | 40 | +10.8% |
| Long horizon | 54.2% | 189 | +26.6% |
| Unknown | 12.8% | 16 | +59.1% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 5.8% | 56 | -29.8% |
| $1B to $10B | 23.5% | 82 | +8.2% |
| $10B to $100B | 17.5% | 76 | +39.8% |
| $100B or more | 53.2% | 69 | +32.1% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 4.2% | 59 | +45.1% |
| Pooled investment vehicles | 8.3% | 25 | +22.1% |
| Registered funds and BDCs | 24.6% | 24 | +26.3% |
| Pension and profit sharing plans | 0.0% | 1 | -22.6% |
| Insurance companies | 0.1% | 3 | -22.0% |
| Charitable organizations | 0.0% | 1 | new |
| Governments and sovereign funds | 3.5% | 8 | +22.3% |
| Corporations | 3.0% | 1 | -10.2% |
| Other investment advisers | 0.1% | 6 | +37.5% |
| Other | 0.1% | 2 | +155.2% |
| Diversified | 17.2% | 21 | -1.4% |
| Unknown | 39.0% | 132 | +31.0% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 14.5% | 38 | +5.5% |
| Private equity funds | 0.3% | 6 | -8.6% |
| Venture capital funds | 1.7% | 2 | +765739.5% |
| Real estate funds | 0.0% | 5 | +3616.4% |
| Securitized asset funds | 0.2% | 1 | +8.7% |
| Other private funds | 22.4% | 15 | +24.2% |
| Mixed private funds | 0.3% | 2 | +158.7% |
| Private funds, type not stated | 0.0% | 1 | -7.5% |
| No private funds | 22.0% | 84 | +5.4% |
| Unknown | 38.6% | 129 | +31.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 94.7% | 239 | +23.3% |
| Outside the US | 5.3% | 44 | -10.1% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 3 holders with no observed 2026-03-31 13F and 1 holder with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
283 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $3,717,798 (1 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 40.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies PDFS's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | AGYS Agilysys Inc | 8 |
| 2 | PLPC Preformed Line Products Co | 6 |
| 3 | NPKI NPK International Inc. | 7 |
| 4 | LASR Nlight, Inc. | 9 |
| 5 | NVEC Nve Corp | 4 |
| 6 | RDVT Red Violet, Inc. | 5 |
| 7 | TTI Tetra Technologies Inc | 7 |
| 8 | ARLO Arlo Technologies, Inc. | 6 |
| 9 | AMSC American Superconductor Corp | 6 |
| 10 | PNTG Pennant Group, Inc. | 6 |
Shareholder Targets
13F filers that own its peers but not PDFS, quarter ended Jun 30, 2026Found through its holder-overlap peers: AGYS, PLPC, NPKI, LASR, NVEC, RDVT, TTI, ARLO, AMSC, PNTG, STVN, RXO, AMBQ, SEI, CAMT, PWP, LTH, VPG, KLIC, LMAT. 1,027 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Orbis Allan Gray Ltd Unknown, Diversified active | $1,004,220,101 1 held | RXO |
| 2 | MFN Partners Management, LP Registered adviser, Concentrated | $775,553,299 1 held | RXO |
| 3 | WELLINGTON MANAGEMENT GROUP LLP Holding company, Diversified active | $637,033,991 12 held | LTH, PWP, SEI |
| 4 | Driehaus Capital Management LLC Registered adviser, Diversified active | $479,078,970 6 held | LASR, SEI, LTH |
| 5 | AMERICAN CENTURY COMPANIES INC Unknown, Diversified active | $453,711,911 16 held | LTH, AGYS, KLIC |
| 6 | Leonard Green & Partners, L.P. Registered adviser, Unknown | $450,371,390 1 held | LTH |
| 7 | Migdal Insurance & Financial Holdings Ltd. Holding company, Concentrated | $432,006,355 1 held | CAMT |
| 8 | HighTower Advisors, LLC Registered adviser, Diversified active | $427,751,662 7 held | PLPC, KLIC, CAMT |
| 9 | ROYCE & ASSOCIATES LP Registered adviser, Diversified active | $368,099,260 16 held | KLIC, LASR, CAMT |
| 10 | Harel Insurance Investments & Financial Services Ltd. Unknown, Diversified active | $363,038,077 1 held | CAMT |
Fund Ownership of PDFS by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 22.94% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 3.89% | 1,641,879 |
| Index ETFs | 19.05% | 8,045,679 |
| Active ETFs | 1.21% | 512,497 |
| Active funds | 19.04% | 8,038,389 |
| Unclassified | 0.07% | 29,997 |
| All registered funds | 43.26% | 18,268,441 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $392,908,208 | 14.05% | 5,550,335 | Shares | 2026-08-07 | |
| Mid NEEDHAM INVESTMENT MANAGEMENT LLC Registered adviser | $146,181,350 | 5.23% | 2,065,000 | Shares | 2026-08-14 | |
| Large WASATCH ADVISORS LP Registered adviser | $135,107,500 | 4.83% | 2,646,572 | Shares | 2026-10-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $117,812,682 | 4.21% | 1,664,256 | Shares | 2026-08-13 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $103,193,980 | 3.69% | 1,457,748 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $98,150,193 | 3.51% | 1,386,498 | Shares | 2026-09-22 | |
| Large BARROW HANLEY MEWHINNEY & STRAUSS LLC Registered adviser | $93,416,394 | 3.34% | 1,319,627 | Shares | 2026-08-12 | |
| Mid Ranger Investment Management, L.P. Registered adviser | $81,383,511 | 2.91% | 1,149,647 | Shares | 2026-08-13 | |
| Mid SNYDER CAPITAL MANAGEMENT L P Registered adviser | $73,196,647 | 2.62% | 1,033,997 | Shares | 2026-08-13 | |
| Mega Jupiter Topco LLC | $65,677,616 | 2.35% | 927,781 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $65,641,229 | 2.35% | 927,267 | Shares | 2026-08-12 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $64,982,529 | 2.32% | 917,962 | Shares | 2026-08-12 | |
| Mid EMERALD ADVISERS, LLC Registered adviser | $62,599,172 | 2.24% | 884,294 | Shares | 2026-08-05 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $59,547,554 | 2.13% | 841,186 | Shares | 2026-08-11 | |
| Mega JENNISON ASSOCIATES LLC Registered adviser | $50,690,948 | 1.81% | 716,075 | Shares | 2026-08-03 | |
| Large Atreides Management, LP Registered adviser | $46,617,763 | 1.67% | 658,536 | Shares | 2026-08-14 | |
| Large LOOMIS SAYLES & CO L P Registered adviser | $45,536,941 | 1.63% | 643,268 | Shares | 2026-08-14 | |
| Mid Ophir Asset Management Pty Ltd Registered adviser | $42,993,810 | 1.54% | 607,343 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $42,396,272 | 1.52% | 598,902 | Shares | 2026-08-14 | |
| Mid EMERALD MUTUAL FUND ADVISERS TRUST Registered adviser | $40,097,508 | 1.43% | 566,429 | Shares | 2026-08-05 | |
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Registered adviser | $39,233,658 | 1.40% | 554,226 | Shares | 2026-08-12 | |
| Small Samjo Management, LLC Registered adviser | $38,813,095 | 1.39% | 548,285 | Shares | 2026-08-14 | |
| Mid OBERWEIS ASSET MANAGEMENT INC/ Registered adviser | $30,184,856 | 1.08% | 426,400 | Shares | 2026-08-14 | |
| Mega Invesco Ltd. Adviser | $29,939,283 | 1.07% | 422,931 | Shares | 2026-08-14 | |
| Mega NORTHERN TRUST CORP Bank | $28,217,882 | 1.01% | 398,614 | Shares | 2026-08-13 | |
| Mega Russell Investments Group, Ltd. | $27,967,568 | 1.00% | 395,078 | Shares | 2026-08-06 | |
| Mega MORGAN STANLEY Holding company | $27,576,525 | 0.99% | 389,554 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $26,290,839 | 0.94% | 371,392 | Shares | 2026-08-14 | |
| Mid Shannon River Fund Management LLC Registered adviser | $26,176,443 | 0.94% | 369,776 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $25,986,301 | 0.93% | 367,090 | Shares | 2026-08-14 | |
| Mid DF DENT & CO INC Registered adviser | $25,126,981 | 0.90% | 354,951 | Shares | 2026-08-14 | |
| Mid SEGALL BRYANT & HAMILL, LLC Registered adviser | $24,581,402 | 0.88% | 347,244 | Shares | 2026-08-12 | |
| Mega BAILLIE GIFFORD & CO Adviser | $24,455,961 | 0.87% | 345,472 | Shares | 2026-08-06 | |
| Small Silverberg Bernstein Capital Management LLC Registered adviser | $22,562,262 | 0.81% | 441,964 | Shares | 2026-10-13 | |
| Mega FMR LLC Holding company | $21,972,436 | 0.79% | 310,389 | Shares | 2026-08-13 | |
| Small Divisar Capital Management LLC Registered adviser | $21,794,754 | 0.78% | 307,879 | Shares | 2026-08-14 | |
| Mid ArrowMark Colorado Holdings LLC Registered adviser | $19,434,474 | 0.69% | 274,537 | Shares | 2026-08-13 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $18,756,376 | 0.67% | 264,958 | Shares | 2026-08-13 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $18,524,751 | 0.66% | 261,686 | Shares | 2026-08-11 | |
| Mega Bank of New York Mellon Corp Bank | $14,746,828 | 0.53% | 208,318 | Shares | 2026-08-06 | |
| Mega T. Rowe Price Investment Management, Inc. Adviser | $14,381,908 | 0.51% | 203,163 | Shares | 2026-08-14 | |
| Mid Penn Capital Management Company, LLC Registered adviser | $14,379,997 | 0.51% | 203,136 | Shares | 2026-07-30 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $13,699,280 | 0.49% | 193,520 | Shares | 2026-08-13 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $13,014,386 | 0.47% | 183,845 | Shares | 2026-08-04 | |
| Large Rockefeller Capital Management L.P. Registered adviser | $12,915,068 | 0.46% | 182,442 | Shares | 2026-08-13 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $11,650,193 | 0.42% | 164,574 | Shares | 2026-07-29 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC Registered adviser | $11,538,770 | 0.41% | 163,000 | Shares | 2026-08-07 | |
| Large PEAK6 LLC Broker-dealer | $10,802,554 | 0.39% | 152,600 | Call | 2026-08-13 | |
| Mega DEUTSCHE BANK AG\ Non-US | $9,382,222 | 0.34% | 132,536 | Shares | 2026-08-07 | |
| Large Public Sector Pension Investment Board Non-US | $9,163,269 | 0.33% | 129,443 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $8,946,935 | 0.32% | 126,387 | Shares | 2026-08-14 | |
| Mega SEI INVESTMENTS CO Holding company | $8,587,321 | 0.31% | 121,307 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $8,574,225 | 0.31% | 121,122 | Shares | 2026-08-11 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $8,563,182 | 0.31% | 120,966 | Shares | 2026-08-14 | |
| Large DAVENPORT & Co LLC Registered adviser | $8,540,971 | 0.31% | 167,306 | Shares | 2026-10-14 | |
| Small HERALD INVESTMENT MANAGEMENT Ltd Non-US | $8,471,226 | 0.30% | 119,667 | Shares | 2026-07-23 | |
| Small Pillsbury Lake Capital LLC Registered adviser | $8,342,884 | 0.30% | 117,854 | Shares | 2026-08-14 | |
| Small BROWN CAPITAL MANAGEMENT LLC Registered adviser | $7,872,471 | 0.28% | 154,211 | Shares | 2026-10-27 | |
| Small Gem Investment Advisors, LLC Exempt adviser | $7,470,185 | 0.27% | 105,526 | Shares | 2026-08-11 | |
| Mega JANE STREET GROUP, LLC | $7,228,790 | 0.26% | 102,116 | Shares | 2026-08-14 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $6,854,312 | 0.25% | 96,826 | Shares | 2026-09-23 | |
| Mega UBS Group AG Bank | $6,777,717 | 0.24% | 95,744 | Shares | 2026-08-13 | |
| Large Squarepoint Ops LLC Registered adviser | $6,745,862 | 0.24% | 95,294 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $6,733,331 | 0.24% | 95,117 | Shares | 2026-08-14 | |
| Large OSAIC HOLDINGS, INC. Holding company | $6,608,883 | 0.24% | 93,359 | Shares | 2026-08-14 | |
| Mid Informed Momentum Co LLC Registered adviser | $6,237,731 | 0.22% | 88,116 | Shares | 2026-08-13 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $6,163,754 | 0.22% | 87,071 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $5,976,021 | 0.21% | 84,419 | Shares | 2026-09-02 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $5,743,829 | 0.21% | 81,139 | Shares | 2026-08-12 | |
| Mega Legal & General Group Plc | $5,735,687 | 0.21% | 81,024 | Shares | 2026-08-14 | |
| Small Bridge City Capital, LLC Registered adviser | $5,415,930 | 0.19% | 76,507 | Shares | 2026-08-11 | |
| Mid SEVEN GRAND MANAGERS, LLC Registered adviser | $5,309,250 | 0.19% | 75,000 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $5,242,847 | 0.19% | 74,062 | Shares | 2026-08-14 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $4,714,047 | 0.17% | 66,592 | Shares | 2026-08-13 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $4,604,815 | 0.16% | 65,049 | Shares | 2026-08-13 | |
| Mega LPL Financial LLC Broker-dealer | $4,545,425 | 0.16% | 64,210 | Shares | 2026-08-07 | |
| Mega Swiss National Bank | $4,530,560 | 0.16% | 64,000 | Shares | 2026-08-11 | |
| Mid GILDER GAGNON HOWE & CO LLC Registered adviser | $4,006,006 | 0.14% | 56,590 | Shares | 2026-08-14 | |
| Small Roubaix Capital, LLC Registered adviser | $3,790,521 | 0.14% | 53,546 | Shares | 2026-08-10 | |
| Mega CITIGROUP INC Bank | $3,614,608 | 0.13% | 51,061 | Shares | 2026-08-03 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $3,252,375 | 0.12% | 45,944 | Shares | 2026-08-14 | |
| Small Bouvel Investment Partners, LLC Registered adviser | $3,229,984 | 0.12% | 63,271 | Shares | 2026-10-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $3,226,606 | 0.12% | 45,580 | Shares | 2026-08-14 | |
| Small Riverwater Partners LLC Registered adviser | $3,176,064 | 0.11% | 44,866 | Shares | 2026-08-14 | |
| Mega Creative Planning Registered adviser | $2,981,957 | 0.11% | 42,124 | Shares | 2026-08-13 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $2,926,529 | 0.10% | 41,341 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $2,888,232 | 0.10% | 40,800 | Put | 2026-08-14 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $2,859,420 | 0.10% | 40,393 | Shares | 2026-08-13 | |
| Small CROWN ADVISORS MANAGEMENT, INC. | $2,831,600 | 0.10% | 40,000 | Shares | 2026-08-07 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $2,737,732 | 0.10% | 38,674 | Shares | 2026-08-13 | |
| Mid PRELUDE CAPITAL MANAGEMENT, LLC Registered adviser | $2,722,583 | 0.10% | 38,460 | Shares | 2026-08-14 | |
| Large PRUDENTIAL FINANCIAL INC Insurer | $2,677,419 | 0.10% | 37,822 | Shares | 2026-08-12 | |
| Mid Dana Investment Advisors, Inc. Registered adviser | $2,613,708 | 0.09% | 36,922 | Shares | 2026-08-13 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $2,557,359 | 0.09% | 36,126 | Shares | 2026-08-24 | |
| Mid OPPENHEIMER ASSET MANAGEMENT INC. | $2,422,015 | 0.09% | 47,444 | Shares | 2026-10-27 | |
| Mid Williams Jones Wealth Management, LLC. Registered adviser | $2,265,280 | 0.08% | 32,000 | Shares | 2026-08-05 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2,187,411 | 0.08% | 30,900 | Call | 2026-08-14 | |
| Mega Fisher Asset Management, LLC Adviser | $2,168,510 | 0.08% | 30,633 | Shares | 2026-08-04 | |
| Mid Regal Partners Ltd | $2,156,263 | 0.08% | 30,460 | Shares | 2026-08-14 | |
| Mega JANE STREET GROUP, LLC | $2,144,937 | 0.08% | 30,300 | Call | 2026-08-14 |
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