Latest Period
Q1 2026
Security Snapshot
PDF SOLUTIONS INC - Common Stock, par value $0.00015 per share (PDFS) Institutional Ownership
CUSIP: 693282105
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
205
Shares (Excl. Options)
32,188,100
Price
$32.71
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- Security type / class
- Equity / Common Stock, par value $0.00015 per share
- Symbol
- PDFS on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 32,188,100
- Total 13F value
- $1,052,684,102
- Portfolio coverage rank
- 0.01%
- Share change
- +1,626,542
- Value change
- +$55,049,169
- Number of holders
- 205
- Shares outstanding
- 39,660,784
- SEC-reported price per share
- $48.09
- Insider filing price
- $48.09
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- PDFS - PDF SOLUTIONS INC - Common Stock, par value $0.00015 per share is tracked under CUSIP 693282105.
- 205 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 187 to 205 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $873,345,864 to $1,052,684,102.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 205 institutions filings for Q1 2026.
Security key
693282105
Latest holder period
Q1 2026
13F holders
205
13D/G owners
2
CIK / CUSIP context first
Open Q1 2026 holders
PDFS full holder history
PDF SOLUTIONS INC SEC filings
PDF SOLUTIONS INC company facts
PDF SOLUTIONS INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 693282105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
PDFS
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| KIBARIAN JOHN KACHIG | 6.5% | 0% | $80,871,679 | +$1,578,000 | 2,562,474 | +2% | KIBARIAN JOHN KACHIG | 31 Dec 2025 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 5.1% | +4% | $78,541,441 | +$2,240,491 | 2,022,700 | +2.9% | Needham Investment Management L.L.C. | 31 Mar 2026 |
As of 31 Mar 2026, 205 institutional investors reported holding 32,188,100 shares of PDF SOLUTIONS INC - Common Stock, par value $0.00015 per share (PDFS). This represents 81% of the company’s total 39,660,784 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
66%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12% | 4,866,177 | -0.39% | 0% | $159,172,648 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 5.1% | 2,022,700 | +2.9% | 3.4% | $66,162,517 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.5% | 1,400,722 | 0% | 0% | $45,817,617 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.5% | 1,388,122 | 0% | 0% | $45,405,471 |
| Ranger Investment Management, L.P. | 3.2% | 1,279,630 | +9.4% | 3% | $41,856,697 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 3.2% | 1,255,559 | -7.6% | 0.14% | $41,069,335 |
| STATE STREET CORP | 3% | 1,192,408 | +3.5% | 0% | $39,003,666 |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | 2.9% | 1,140,547 | 0.12% | $37,307,292 | |
| Ophir Asset Management Pty Ltd | 2.9% | 1,137,349 | +57% | 4.3% | $37,202,686 |
| SNYDER CAPITAL MANAGEMENT L P | 2.7% | 1,060,478 | +11% | 0.67% | $34,688,235 |
| JANUS HENDERSON GROUP PLC | 2.6% | 1,035,666 | +14% | 0.02% | $33,877,471 |
| Samjo Management, LLC | 2.3% | 919,955 | -20% | 13% | $30,091,728 |
| EMERALD ADVISERS, LLC | 2.2% | 860,819 | -8.8% | 0.89% | $28,157,389 |
| DIMENSIONAL FUND ADVISORS LP | 2.1% | 845,693 | +5.6% | 0.01% | $27,659,703 |
| LOOMIS SAYLES & CO L P | 2.1% | 827,109 | +78% | 0.04% | $27,054,730 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 802,223 | +4.2% | 0% | $26,246,199 |
| Divisar Capital Management LLC | 1.6% | 623,364 | -18% | 5.2% | $20,390,236 |
| EMERALD MUTUAL FUND ADVISERS TRUST | 1.5% | 594,610 | 0% | 0.94% | $19,449,693 |
| WASATCH ADVISORS LP | 1.3% | 507,737 | -2.8% | 0.11% | $16,608,077 |
| Silverberg Bernstein Capital Management LLC | 1.2% | 472,883 | -0.21% | 8.5% | $15,468,003 |
| Russell Investments Group, Ltd. | 1.1% | 441,716 | +8.4% | 0.02% | $14,448,548 |
| ArrowMark Colorado Holdings LLC | 0.9% | 356,620 | -28% | 0.31% | $11,665,040 |
| DF DENT & CO INC | 0.89% | 352,960 | 0.22% | $11,545,334 | |
| NORTHERN TRUST CORP | 0.89% | 352,559 | +1.3% | 0% | $11,532,206 |
| MORGAN STANLEY | 0.86% | 341,780 | -14% | 0% | $11,179,627 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 32,188,100 | $1,052,684,102 | +$55,049,169 | $32.71 | 205 |
| 2025 Q4 | 30,606,469 | $873,345,864 | +$18,721,068 | $28.53 | 187 |
| 2025 Q3 | 29,687,544 | $766,532,547 | +$17,247,842 | $25.82 | 179 |
| 2025 Q2 | 29,182,133 | $623,934,135 | +$32,853,682 | $21.38 | 170 |
| 2025 Q1 | 27,684,187 | $529,130,751 | -$24,654,440 | $19.11 | 166 |
| 2024 Q4 | 28,286,067 | $765,983,933 | -$5,912,370 | $27.08 | 176 |
| 2024 Q3 | 28,379,883 | $899,031,794 | +$11,152,871 | $31.68 | 174 |
| 2024 Q2 | 27,940,099 | $1,016,428,909 | -$114,328 | $36.38 | 171 |
| 2024 Q1 | 27,969,223 | $941,698,899 | -$4,669,737 | $33.67 | 177 |
| 2023 Q4 | 28,171,303 | $907,840,658 | +$10,346,518 | $32.14 | 198 |
| 2023 Q3 | 27,528,387 | $891,920,169 | +$19,487,457 | $32.40 | 182 |
| 2023 Q2 | 27,636,462 | $1,246,258,580 | +$20,663,066 | $45.10 | 178 |
| 2023 Q1 | 27,224,327 | $1,147,884,925 | +$42,362,861 | $42.40 | 177 |
| 2022 Q4 | 26,425,426 | $753,692,408 | +$5,305,861 | $28.52 | 150 |
| 2022 Q3 | 26,260,854 | $644,131,387 | +$8,738,829 | $24.53 | 130 |
| 2022 Q2 | 25,914,202 | $557,479,005 | -$20,813,005 | $21.51 | 122 |
| 2022 Q1 | 26,662,929 | $742,859,754 | +$6,779,478 | $27.87 | 124 |
| 2021 Q4 | 26,373,205 | $837,988,528 | +$7,977,481 | $31.79 | 131 |
| 2021 Q3 | 25,963,918 | $598,205,130 | -$2,252,441 | $23.04 | 105 |
| 2021 Q2 | 27,979,756 | $508,764,553 | +$7,743,858 | $18.18 | 111 |
| 2021 Q1 | 25,705,304 | $457,080,392 | -$4,341,690 | $17.78 | 100 |
| 2020 Q4 | 25,770,826 | $556,666,922 | +$1,267,637 | $21.60 | 114 |
| 2020 Q3 | 24,747,224 | $463,146,911 | -$10,982,606 | $18.71 | 110 |
| 2020 Q2 | 26,872,651 | $528,739,338 | +$19,095,756 | $19.56 | 108 |
| 2020 Q1 | 24,324,729 | $285,077,617 | -$9,454,074 | $11.72 | 93 |