Pioneer Power Solutions, Inc.
Pioneer Power Solutions, Inc. (PPSI) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PPSI · as of Sep 30, 2025
Ownership Breakdown
31
Institutional Holders
▲ 5 vs Q2
$3.28M
Total Inst. Value
▲ $1.25M vs Q2
11.10M
Shares Outstanding
freeFloat 77.50%
760,145
13F Shares Held
▲ 21,210 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
PPSI largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC power, distribution & specialty transformers | 231.3K | 2.08% | 2.08% | $999.25M | Nov 7, 2025 | ▲ 39.8K |
GEODE CAPITAL MANAGEMENT, LLC power, distribution & specialty transformers | 109.1K | 98.28% | 98.28% | $471.52M | Nov 12, 2025 | ▲ 592 |
DIMENSIONAL FUND ADVISORS LP power, distribution & specialty transformers | 65.5K | 59.03% | 59.03% | $283.18M | Nov 12, 2025 | ▲ 10.7K |
JANE STREET GROUP, LLC power, distribution & specialty transformers | 50.0K | 45.06% | 45.06% | $216.16M | Nov 14, 2025 | NEW |
SUSQUEHANNA INTERNATIONAL GROUP, LLP power, distribution & specialty transformers | 38.0K | 34.22% | 34.22% | $164.16M | Nov 14, 2025 | ▲ 25.3K |
STATE STREET CORP power, distribution & specialty transformers | 30.2K | 27.22% | 27.22% | $130.59M | Nov 14, 2025 | — held |
CITADEL ADVISORS LLC power, distribution & specialty transformers | 28.8K | 25.92% | 25.92% | $124.33M | Nov 14, 2025 | ▼ 58.2K |
BLACKROCK, INC. power, distribution & specialty transformers | 28.7K | 25.82% | 25.82% | $123.87M | Nov 12, 2025 | — held |
STRATOS WEALTH ADVISORS, LLC power, distribution & specialty transformers | 25.0K | 22.51% | 22.51% | $108.00M | Nov 6, 2025 | ▲ 10.0K |
RENAISSANCE TECHNOLOGIES LLC power, distribution & specialty transformers | 24.8K | 22.29% | 22.29% | $106.93M | Nov 13, 2025 | ▼ 8.4K |
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
8
Increased
+123.8K shares11
New Positions
first time holders6
Decreased
−69.4K shares8
Sold Out
fully exitedNet shares change (top 50)
+54.4K
+123.8K / −69.4K
Net new holders
+5
11 new / 8 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
PPSI insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
1
Sell transactions
1.00
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 |
|---|---|---|---|---|---|---|---|
MAZUREK NATHAN Chief Executive Officer | Nov 18, 2025 | Purchase | 10,000 | $3.39 | $33.9K | 1.98M | Form 4 ↗ |
Michalec Wojciech Chief Financial Officer | May 2, 2025 | Tax Withhold | 25,000 | $5.92 | $148.0K | 275.0K | Form 4 ↗ |
Michalec Wojciech Chief Financial Officer | Dec 19, 2024 | Sale | 1,960 | $4.12 | $8.1K | 313.0K | Form 4 ↗ |
Michalec Wojciech Chief Financial Officer | Dec 20, 2024 | Sale | 13,040 | $4.09 | $53.3K | 300.0K | Form 4 ↗ |
Tesler David director | Dec 5, 2024 | Award | 10,000 | $5.92 | $59.2K | 10.0K | Form 4 ↗ |
Tulkoff Jonathan director | Dec 5, 2024 | Award | 10,000 | $5.92 | $59.2K | 10.0K | Form 4 ↗ |
Ross Ian director | Dec 4, 2024 | Sale | 1,000 | $6.01 | $6.0K | 22.5K | Form 4 ↗ |
Ross Ian director | Dec 5, 2024 | Award | 10,000 | $5.92 | $59.2K | 10.0K | Form 4 ↗ |
Cohn Yossi director | Dec 5, 2024 | Award | 10,000 | $5.92 | $59.2K | 10.0K | Form 4 ↗ |
Michalec Wojciech Chief Financial Officer | Dec 5, 2024 | Award | 50,000 | — | — | 315.0K | 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
Pioneer Power Solutions, Inc. (PPSI) is primarily owned by institutional investors, who hold approximately 6.8% of total shares outstanding. Company insiders own approximately 22.50%, while retail and public investors account for the remaining 70.65%.
The largest institutional shareholder of Pioneer Power Solutions, Inc. is VANGUARD GROUP INC, holding approximately 231,309 shares — equal to 2.08% of outstanding shares — as of September 30, 2025.
A total of 31 institutional investors currently hold PPSI stock, with a combined institutional value of approximately $3,283,829 as of the most recent 13F filing period.
Frequently asked questions
PPSI ownershipPioneer Power Solutions, Inc. (PPSI) is primarily owned by institutional investors, who hold approximately 6.8% of shares. The largest shareholder is VANGUARD GROUP INC with a 2.08% stake. Company insiders hold 22.50%. Data sourced from SEC Form 13F as of September 30, 2025.