PDF SOLUTIONS INC PDFS
COM · Common Stock · CUSIP 693282105 · ISIN US6932821050
Company based in San Jose, California
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($272.1k this quarter). Holder counts are more reliable. Shares outstanding: 38.3m as of 2023-11-03, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $32.47. Options: 4 managers hold calls ($141.6k notional), 2 hold puts ($84.2k).
Trends to Q3 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 136 |
| Q4 2022 | 151 |
| Q1 2023 | 179 |
| Q2 2023 | 181 |
| Q3 2023 | 185 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 71 | 60 |
| Q1 2023 | 93 | 68 |
| Q2 2023 | 97 | 86 |
| Q3 2023 | 105 | 83 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q4 2022 | $59.9k | $39.9k | 0.67 |
| Q1 2023 | $398.6k | $271.4k | 0.68 |
| Q2 2023 | $202.9k | $40.6k | 0.20 |
| Q3 2023 | $141.6k | $84.2k | 0.59 |
Biggest buyers
| Samjo Capital LLC | Added | +556.2k |
| VANGUARD GROUP INC | Added | +353.2k |
| Thrivent Financial for Lutherans | Added | +204.5k |
| Ranger Investment Management, L.P. | Added | +193.3k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | Added | +124.5k |
| SEGALL BRYANT & HAMILL, LLC | New | +122.6k |
| CITADEL ADVISORS LLC | Added | +86.2k |
| WASATCH ADVISORS LP | Added | +85.9k |
| Allspring Global Investments Holdings, LLC | Added | +85.0k |
| GOLDMAN SACHS GROUP INC | Added | +77.8k |
Biggest sellers
| Invesco Ltd. | Reduced | -832.5k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | -265.9k |
| ArrowMark Colorado Holdings LLC | Sold out | -171.0k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | -141.3k |
| G2 Investment Partners Management LLC | Sold out | -120.5k |
| Lisanti Capital Growth, LLC | Sold out | -98.6k |
| PRUDENTIAL FINANCIAL INC | Reduced | -74.3k |
| PANAGORA ASSET MANAGEMENT INC | Reduced | -65.0k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -63.8k |
| ALGERT GLOBAL LLC | Reduced | -62.8k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $100.4k3.1k shares |
| GROUP ONE TRADING LLC | New | $29.2k900 shares |
| SIMPLEX TRADING, LLC | Unchanged | $12.0k400 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $84.2k2.6k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| KIBARIAN JOHN KACHIG 13G · exempt (held before listing) no change · filed 2026-02-17 | 6.5% |
| WASATCH ADVISORS LP 13G · institution new · filed 2026-10-09 | 6.3% |
| NEEDHAM INVESTMENT MANAGEMENT LLC 13G · institution +0.2 pts · filed 2026-05-14 | 5.1% |
Fell to 5% or below in the last year: ADVANTEST CORP (0.0%, 2026-05-27), VANGUARD GROUP INC (0.0%, 2026-03-27)
Insider purchases and sales in Q3 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2021 | 0 | — | 1 | $99.0k | — |
| Q1 2022 | 0 | — | 2 | $280.9k | — |
| Q2 2022 | 0 | — | 1 | $931.3k | — |
| Q3 2022 | 0 | — | 0 | — | — |
| Q4 2022 | 0 | — | 4 | $1.2m | — |
| Q1 2023 | 0 | — | 4 | $1.6m | — |
| Q2 2023 | 0 | — | 0 | — | — |
| Q3 2023 | 0 | — | 1 | $102.8k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2023-08-18 | Zhang Shuo Director | Sold | $102.8k3.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q3 2023
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 4.7m $150.9m | Reduced -50.6k |
| VANGUARD GROUP INC 0.00% of their portfolio | 2.9m $94.9m | Added +353.2k |
| Invesco Ltd. 0.02% of their portfolio | 2.4m $79.1m | Reduced -832.5k |
| SNYDER CAPITAL MANAGEMENT L P 0.85% of their portfolio | 1.2m $37.8m | Reduced -26.5k |
| WASATCH ADVISORS LP 0.23% of their portfolio | 1.1m $37.1m | Added +85.9k |
| Samjo Capital LLC 14.04% of their portfolio | 1.1m $35.7m | Added +556.2k |
| STATE STREET CORP 0.00% of their portfolio | 1.1m $34.1m | Added +30.8k |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 932.0k $30.2m | Added +6.8k |
| NEEDHAM INVESTMENT MANAGEMENT LLC 3.84% of their portfolio | 697.5k $22.6m | Added +40.0k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 642.9k $20.8m | Added +31.3k |
| EMERALD ADVISERS, LLC 0.88% of their portfolio | 560.9k $18.2m | Added +29.4k |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.06% of their portfolio | 555.9k $18.0m | Reduced -141.3k |
| MORGAN STANLEY 0.00% of their portfolio | 529.3k $17.2m | Added +18.4k |
| Ranger Investment Management, L.P. 1.11% of their portfolio | 516.3k $16.7m | Added +193.3k |
| JANUS HENDERSON GROUP PLC 0.01% of their portfolio | 460.8k $14.9m | Added +35.2k |
| EMERALD MUTUAL FUND ADVISERS TRUST 0.89% of their portfolio | 453.8k $14.7m | Added +40.6k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 398.2k $12.9m | Reduced -142 |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 346.7k $11.2m | Added +52.2k |
| Divisar Capital Management LLC 2.27% of their portfolio | 320.5k $10.4m | Added +15.0k |
| Assenagon Asset Management S.A. 0.03% of their portfolio | 294.1k $9.5m | Added +3.3k |
| ROYCE & ASSOCIATES LP 0.09% of their portfolio | 258.9k $8.4m | Reduced -10.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 241.0k $7.8m | Added +11.6k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 237.2k $7.7m | Reduced -7.5k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 234.2k $7.6m | Added +7.5k |
| Thrivent Financial for Lutherans 0.02% of their portfolio | 233.1k $7.6m | Added +204.5k |
| Driehaus Capital Management LLC 0.08% of their portfolio | 201.5k $6.5m | Reduced -432 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.05% of their portfolio | 194.1k $6.3m | Added +124.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.00% of their portfolio | 168.3k $5.5m | Reduced -5.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 160.1k $5.2m | Added +77.8k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 134.9k $4.4m | Reduced -9.5k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 131.6k $4.3m | Added +86.2k |
| FMR LLC 0.00% of their portfolio | 122.7k $4.0m | Added +51.7k |
| SEGALL BRYANT & HAMILL, LLC 0.05% of their portfolio | 122.6k $4.0m | New |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC 0.05% of their portfolio | 116.4k $3.8m | Added +14.4k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 115.9k $3.8m | Reduced -63.8k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 114.4k $3.7m | Added +11.3k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 96.0k $3.1m | Reduced -13.3k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.02% of their portfolio | 92.6k $3.0m | Reduced -9.7k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 89.4k $2.9m | Added +338 |
| Cubist Systematic Strategies, LLC 0.04% of their portfolio | 88.5k $2.9m | Added +77.7k |
| Allspring Global Investments Holdings, LLC 0.00% of their portfolio | 86.7k $2.8m | Added +85.0k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 86.6k $2.8m | Reduced -125 |
| Legal & General Group Plc 0.00% of their portfolio | 86.4k $2.8m | Reduced -224 |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 84.7k $2.7m | Added +6.9k |
| FIRST TRUST ADVISORS LP 0.00% of their portfolio | 77.7k $2.5m | Reduced -15.9k |
| Walleye Capital LLC 0.04% of their portfolio | 76.1k $2.5m | New |
| AMI ASSET MANAGEMENT CORP 0.15% of their portfolio | 72.7k $2.4m | New |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 72.4k $2.3m | Added +46.7k |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 71.3k $2.3m | Added +42.9k |
| AQR CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 67.6k $2.2m | Reduced -17.5k |
| Squarepoint Ops LLC 0.01% of their portfolio | 67.0k $2.2m | Added +55.4k |
| Swiss National Bank 0.00% of their portfolio | 66.6k $2.2m | Added +800 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.00% of their portfolio | 66.5k $2.2m | Reduced -265.9k |
| ExodusPoint Capital Management, LP 0.03% of their portfolio | 66.4k $2.2m | Added +52.0k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.23% of their portfolio | 66.0k $2.1m | Added +11.5k |
| PANAGORA ASSET MANAGEMENT INC 0.01% of their portfolio | 65.0k $2.1m | Reduced -65.0k |
| Man Group plc 0.01% of their portfolio | 63.0k $2.0m | New |
| Fisher Asset Management, LLC 0.00% of their portfolio | 62.6k $2.0m | Reduced -7.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 62.3k $2.0m | Added +24.1k |
| TUDOR INVESTMENT CORP ET AL 0.03% of their portfolio | 54.2k $1.8m | Added +25.0k |
| ALGERT GLOBAL LLC 0.08% of their portfolio | 53.1k $1.7m | Reduced -62.8k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 50.4k $1.6m | Added +16.9k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 49.8k $1.6m | Reduced -1.6k |
| Allianz Asset Management GmbH 0.00% of their portfolio | 49.2k $1.6m | Added +34.4k |
| Trexquant Investment LP 0.04% of their portfolio | 47.7k $1.5m | New |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.01% of their portfolio | 47.7k $1.5m | Added +35.8k |
| M&T Bank Corp 0.01% of their portfolio | 44.8k $1.5m | Reduced -200 |
| Public Sector Pension Investment Board 0.01% of their portfolio | 37.7k $1.2m | Reduced -15.4k |
| LOS ANGELES CAPITAL MANAGEMENT LLC 0.01% of their portfolio | 37.0k $1.2m | Added +709 |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 36.5k $1.2m | Added +475 |
| PRUDENTIAL FINANCIAL INC 0.00% of their portfolio | 35.8k $1.2m | Reduced -74.3k |
| CANADA LIFE ASSURANCE Co 0.00% of their portfolio | 34.6k $1.1m | Added +1.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 34.1k $1.1m | Reduced -8.2k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 33.5k $1.1m | Reduced -3.3k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 33.5k $1.1m | Added +603 |
| Aquila Investment Management LLC 0.98% of their portfolio | 33.0k $1.1m | Added +4.0k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 32.1k $1.0m | New |
| Williams Jones Wealth Management, LLC. 0.02% of their portfolio | 32.0k $1.0m | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.09% of their portfolio | 31.8k $1.0m | Added +8.0k |
| SG Americas Securities, LLC 0.01% of their portfolio | 30.6k $992.0k | New |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.12% of their portfolio | 27.5k $892.2k | Added +5.3k |
| Jump Financial, LLC 0.03% of their portfolio | 26.7k $865.2k | Reduced -4.6k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 26.7k $864.8k | Added +180 |
| TEXAS PERMANENT SCHOOL FUND CORP 0.01% of their portfolio | 25.9k $839.3k | Reduced -425 |
| CAPTRUST FINANCIAL ADVISORS 0.00% of their portfolio | 25.6k $828.9k | Added +368 |
| State of Tennessee, Department of Treasury 0.00% of their portfolio | 25.3k $819.9k | Added +2.2k |
| Jackson Creek Investment Advisors LLC 0.34% of their portfolio | 24.9k $805.0k | Reduced -22 |
| SEI INVESTMENTS CO 0.00% of their portfolio | 24.8k $804.1k | New |
| Woodline Partners LP 0.01% of their portfolio | 23.8k $772.1k | New |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 23.0k $743.8k | Added +9.4k |
| HRT FINANCIAL LP 0.01% of their portfolio | 20.7k $669.0k | Added +9.3k |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio | 20.4k $660.7k | Reduced -13.4k |
| Quadrature Capital Ltd 0.01% of their portfolio | 19.6k $633.5k | Added +336 |
| BOULDER HILL CAPITAL MANAGEMENT LP 0.39% of their portfolio | 19.4k $628.6k | New |
| State of Alaska, Department of Revenue 0.01% of their portfolio | 19.0k $615.0k | Reduced -685 |
| Skandinaviska Enskilda Banken AB (publ) 0.00% of their portfolio | 18.7k $606.0k | Added +1.3k |
| Illinois Municipal Retirement Fund 0.01% of their portfolio | 18.0k $583.0k | New |
| STRS OHIO 0.00% of their portfolio | 17.3k $560.0k | Unchanged |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 16.8k $544.5k | Added +392 |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.00% of their portfolio | 16.6k $537.0k | Reduced -1.6k |