PDF Solutions, Inc.
PDF Solutions, Inc. (PDFS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PDFS · as of Sep 30, 2025
Ownership Breakdown
181
Institutional Holders
▲ 11 vs Q2
$766.53M
Total Inst. Value
▲ $146.87M vs Q2
39.92M
Shares Outstanding
freeFloat 81.54%
29.69M
13F Shares Held
▲ 705,403 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
PDFS largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. services-prepackaged software | 4.86M | 12.42% | 12.42% | $125.57B | Nov 12, 2025 | ▲ 65.5K |
VANGUARD GROUP INC services-prepackaged software | 3.15M | 8.06% | 8.06% | $81.45B | Nov 7, 2025 | ▼ 29.1K |
NEEDHAM INVESTMENT MANAGEMENT LLC services-prepackaged software | 2.02M | 5.16% | 5.16% | $52.12B | Nov 14, 2025 | ▲ 105.0K |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC services-prepackaged software | 1.35M | 3.45% | 3.45% | $34.84B | Nov 12, 2025 | ▲ 162.4K |
STATE STREET CORP services-prepackaged software | 1.15M | 2.93% | 2.93% | $29.59B | Nov 14, 2025 | ▲ 8.7K |
SAMJO MANAGEMENT, LLC services-prepackaged software | 1.12M | 2.86% | 2.86% | $28.94B | Nov 13, 2025 | ▲ 184.9K |
RANGER INVESTMENT MANAGEMENT, L.P. services-prepackaged software | 1.06M | 2.70% | 2.70% | $27.30B | Nov 5, 2025 | ▲ 11.7K |
EMERALD ADVISERS, LLC services-prepackaged software | 942.7K | 2.41% | 2.41% | $24.34B | Oct 30, 2025 | ▼ 11.7K |
DIMENSIONAL FUND ADVISORS LP services-prepackaged software | 811.3K | 2.07% | 2.07% | $20.95B | Nov 12, 2025 | ▼ 35.2K |
SNYDER CAPITAL MANAGEMENT L P services-prepackaged software | 800.4K | 2.04% | 2.04% | $20.67B | Nov 12, 2025 | ▼ 12.3K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
29
Increased
+2.15M shares4
New Positions
first time holders17
Decreased
−1.43M shares0
Sold Out
fully exitedNet shares change (top 50)
+724.8K
+2.15M / −1.43M
Net new holders
+16
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
PDFS insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
1
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Strojwas Andrzej Chief Technology Officer | Jan 1, 2026 | Tax Withhold | 2,762 | $28.53 | $78.8K | 89.2K | Form 4 ↗ |
Raza Adnan EVP, Finance and CFO | Jan 1, 2026 | Tax Withhold | 5,498 | $28.53 | $156.9K | 71.0K | Form 4 ↗ |
MICHAELS KIMON EVP of Products and Solutions | Dec 9, 2025 | Gift | 5,070 | — | — | 1.54M | Form 4 ↗ |
Raza Adnan EVP, Finance and CFO | Aug 1, 2025 | Award | 35,000 | — | — | 76.5K | Form 4 ↗ |
Strojwas Andrzej Chief Technology Officer | Aug 1, 2025 | Award | 8,000 | — | — | 92.0K | Form 4 ↗ |
MICHAELS KIMON EVP of Products and Solutions | Jul 1, 2025 | Tax Withhold | 798 | $21.87 | $17.5K | 28.3K | Form 4 ↗ |
Raza Adnan EVP, Finance and CFO | Jul 1, 2025 | Tax Withhold | 4,921 | $21.87 | $107.6K | 63.9K | Form 4 ↗ |
Strojwas Andrzej Chief Technology Officer | Jul 1, 2025 | Tax Withhold | 2,497 | $21.87 | $54.6K | 83.6K | Form 4 ↗ |
BRONSON JOSEPH R director | Jul 1, 2025 | Award | 7,429 | — | — | 38.3K | Form 4 ↗ |
CHAN CHI-FOON director | Jul 1, 2025 | Award | 7,429 | — | — | 21.5K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
PDF Solutions, Inc. (PDFS) is primarily owned by institutional investors, who hold approximately 74.4% of total shares outstanding. Company insiders own approximately 18.46%, while retail and public investors account for the remaining 7.18%.
The largest institutional shareholder of PDF Solutions, Inc. is BLACKROCK, INC., holding approximately 4.86 million shares — equal to 12.42% of outstanding shares — as of September 30, 2025.
A total of 181 institutional investors currently hold PDFS stock, with a combined institutional value of approximately $766,533,425 as of the most recent 13F filing period.
Frequently asked questions
PDFS ownershipPDF Solutions, Inc. (PDFS) is primarily owned by institutional investors, who hold approximately 74.4% of shares. The largest shareholder is BLACKROCK, INC. with a 12.42% stake. Company insiders hold 18.46%. Data sourced from SEC Form 13F as of September 30, 2025.