Pioneer Power Solutions, Inc. (PPSI) Ownership
PPSI ownership summary
as of October 18, 2026- Institutions
- 13.3% of shares outstanding
- Insiders
- 22.49% of shares outstanding
- Shares outstanding
- 11.1M
- Float
- 8.6M shares available to trade
- Short interest
- 0.59% 51K shares short
- Days to cover
- 0.48 short interest down 53.7% vs prior month
- Institutions 13.35%
- Insiders 22.49%
- Other investors 64.16%
PPSI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard Capital Management, LLC | 1.76% | 196K | $530,585 | −349 (−0.2%) | June 30, 2026 |
| 2 | Spectrum Investment Advisors Inc | 1.24% | 138K | $372,625 | — | June 30, 2026 |
| 3 | Acadian Asset Management LLC | 1.15% | 128K | $346,818 | +127,977 (0.0%) | June 30, 2026 |
| 4 | Renaissance Technologies Corp | 1.14% | 126K | $342,782 | +62,288 (+97.0%) | June 30, 2026 |
| 5 | Geode Capital Management, LLC | 1.05% | 117K | $316,070 | +1,250 (+1.1%) | June 30, 2026 |
| 6 | Jane Street Group LLC | 1.03% | 114K | $310,032 | +114,403 (0.0%) | June 30, 2026 |
| 7 | Susquehanna International Group, LLP | 0.72% | 80K | $217,800 | +24,778 (+44.6%) | June 30, 2026 |
| 8 | Dimensional Fund Advisors, Inc. | 0.72% | 80K | $217,049 | +2,869 (+3.7%) | June 30, 2026 |
| 9 | Citadel Advisors Llc | 0.64% | 71K | $191,852 | +70,794 (0.0%) | June 30, 2026 |
| 10 | HRT FINANCIAL LLC | 0.58% | 65K | $175,849 | +64,889 (0.0%) | June 30, 2026 |
| 11 | BlackRock Inc | 0.54% | 60K | $162,530 | +31,300 (+109.2%) | June 30, 2026 |
| 12 | Vanguard Fiduciary Trust Co | 0.43% | 48K | $130,706 | +12,639 (+35.5%) | June 30, 2026 |
| 13 | State Street Corp | 0.31% | 34K | $92,216 | — | June 30, 2026 |
| 14 | XTX Topco Ltd | 0.25% | 27K | $74,341 | +5,698 (+26.2%) | June 30, 2026 |
| 15 | James Investment Research, Inc. | 0.20% | 22K | $59,040 | — | June 30, 2026 |
| 16 | Goss Wealth Management LLC | 0.20% | 22K | $59,040 | — | June 30, 2026 |
| 17 | Sage Capital Management, LLC | 0.19% | 21K | $56,910 | — | June 30, 2026 |
| 18 | Northern Trust Corp | 0.19% | 21K | $56,840 | +6,505 (+45.0%) | June 30, 2026 |
| 19 | Stratos Wealth Advisors, LLC | 0.19% | 21K | $56,368 | +3,500 (+20.2%) | June 30, 2026 |
| 20 | Legacy Advisors, LLC | 0.14% | 16K | $43,428 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 529K shares and 1 cut 349.
PPSI top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 0.94% | 105K | $284,184 | — | August 31, 2026 |
| 2 | Fidelity Extended Market Index | 0.37% | 41K | $111,609 | −221 (−0.5%) | August 31, 2026 |
| 3 | iShares Micro-Cap ETF | 0.25% | 28K | $75,907 | −193 (−0.7%) | September 30, 2026 |
| 4 | Fidelity Total Market Index | 0.20% | 23K | $61,406 | — | August 31, 2026 |
| 5 | DFA US Small Cap I | 0.20% | 22K | $60,883 | — | August 31, 2026 |
| 6 | Fidelity Series Total Market Index | 0.16% | 18K | $47,761 | — | August 31, 2026 |
| 7 | Fidelity Nasdaq Composite Index | 0.06% | 6,895 | $18,685 | −6,204 (−47.4%) | August 31, 2026 |
| 8 | DFA US Micro Cap I | 0.06% | 6,733 | $18,246 | — | August 31, 2026 |
| 9 | DFA US Core Equity 2 I | 0.04% | 3,944 | $10,688 | — | August 31, 2026 |
| 10 | LVIP Dimensional US Core Equity 2 Std | 0.04% | 3,909 | $10,593 | — | June 30, 2026 |
| 11 | DFA US Vector Equity Class F | 0.03% | 3,837 | $10,398 | — | July 31, 2026 |
| 12 | DFA US Sustainability Core 1 | 0.03% | 3,818 | $10,347 | — | August 31, 2026 |
| 13 | DFA US Social Core Equity 2 Portfolio | 0.03% | 3,496 | $9,474 | — | August 31, 2026 |
| 14 | DFA US Vector Equity I | 0.03% | 2,960 | $8,022 | — | August 31, 2026 |
| 15 | Dimensional US Core Equity USD Acc | 0.03% | 2,861 | $7,753 | — | August 31, 2026 |
| 16 | Dimensional US Core Equity 2 ETF | 0.02% | 2,578 | $6,986 | — | September 30, 2026 |
| 17 | DFA US Core Equity Class F | 0.02% | 2,176 | $5,897 | — | July 31, 2026 |
| 18 | 1290 VT Micro Cap K | 0.02% | 1,939 | $5,255 | — | August 31, 2026 |
| 19 | Dimensional Global Small Coms USD Acc | 0.02% | 1,772 | $4,802 | — | August 31, 2026 |
| 20 | Dimensional US Core Equity 1 ETF | <0.01% | 482 | $1,306 | — | September 24, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
PPSI insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2024-12-19 | Wojciech Michalec | Sell | $4.12 | 1,960 | $8,075 |
| 2024-12-04 | Ian Ross | Sell | $6.01 | 1,000 | $6,010 |
| 2023-09-12 | Nathan Mazurek | Buy | $6.09 | 10,000 | $60,900 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
PPSI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns PPSI
Institutional investors own 13.3% of Pioneer Power Solutions's shares and insiders 22.49%. The largest holder is Vanguard Capital Management, LLC with 1.76% of the shares (196K), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 1 reduced their stake in the latest filings. Short interest is 0.59% of the float, or 0.48 days of average trading volume. The share count rose 53.6% since 2014.
Related: PPSI analyst forecast, PPSI key metrics. See the PPSI stock overview for the latest quote and news.
PPSI ownership FAQ
Who owns the most Pioneer Power Solutions stock?
The largest shareholders of Pioneer Power Solutions are Vanguard Capital Management, LLC (1.76%), Spectrum Investment Advisors Inc (1.24%), Acadian Asset Management LLC (1.15%), Renaissance Technologies Corp (1.14%), Geode Capital Management, LLC (1.05%).
What percentage of Pioneer Power Solutions is owned by institutions?
Institutions hold 13.3% of Pioneer Power Solutions's shares outstanding; insiders hold 22.49%.
Which funds own Pioneer Power Solutions?
The largest fund holders of Pioneer Power Solutions are Vanguard MStar Total Stk Mkt Idx Invest (0.94%), Fidelity Extended Market Index (0.37%), iShares Micro-Cap ETF (0.25%), Fidelity Total Market Index (0.20%), DFA US Small Cap I (0.20%).
What is Pioneer Power Solutions's short interest?
51K shares of Pioneer Power Solutions were sold short, 0.59% of the float; at the average daily volume it would take 0.48 days to cover.
Are insiders buying or selling Pioneer Power Solutions?
Of the latest 3 reported insider transactions in Pioneer Power Solutions (since September 12, 2023), 1 were purchases and 2 were sales.
How many shares of Pioneer Power Solutions are outstanding?
Pioneer Power Solutions has 11.1M shares outstanding, of which 8.6M are in the public float.