POWER SOLUTIONS INTERNATIONAL, INC. (PSIX)
Every FINRA and SEC series the site collects for POWER SOLUTIONS INTERNATIONAL, INC.: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq, classified by the SEC as engines & turbines.
1.7M
Short interest
settlement 2026-08-31
6.2
Days to cover
+1.4% vs prior
56.9%
Short share of volume
2026-09-11
1,396
Fails to deliver
settlement 2026-08-10
$0
Insider flow, 90 days
0 buys, 0 sells
As of 2026-09-11.
Short interest
FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSONAs of 31 August 2026, short interest in PSIX is 1,728,564 shares, down 234,581 shares over the last month. Over the last 48 readings it ranged from 46,200 shares (15 November 2024) to 1,968,083 shares (15 December 2025). At the reported average volume of 281K shares a day that is 6.2 days to cover, elevated.
Embed this chartkeeps the attribution line it carries
<iframe src="https://xoomar.com/embed/stocks/psix" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-08-31 | 1,728,564 | +1.4% | 280,796 | 6.16 |
| 2026-08-14 | 1,704,163 | -13.2% | 658,636 | 2.59 |
| 2026-07-31 | 1,963,145 | +11.8% | 440,927 | 4.45 |
| 2026-07-15 | 1,755,134 | +1.2% | 447,348 | 3.92 |
| 2026-06-30 | 1,734,886 | -0.6% | 382,608 | 4.53 |
| 2026-06-15 | 1,744,970 | -1.0% | 530,423 | 3.29 |
| 2026-05-29 | 1,762,704 | +9.8% | 740,205 | 2.38 |
| 2026-05-15 | 1,605,971 | +20.1% | 1,565,014 | 1.03 |
| 2026-04-30 | 1,336,823 | -19.9% | 456,103 | 2.93 |
| 2026-04-15 | 1,668,725 | +3.1% | 620,516 | 2.69 |
| 2026-03-31 | 1,618,574 | +11.2% | 637,256 | 2.54 |
| 2026-03-13 | 1,455,429 | +27.6% | 973,761 | 1.49 |
| 2026-02-27 | 1,140,321 | -17.9% | 391,974 | 2.91 |
| 2026-02-13 | 1,388,891 | -14.0% | 577,628 | 2.40 |
| 2026-01-30 | 1,614,516 | -12.2% | 350,301 | 4.61 |
| 2026-01-15 | 1,838,389 | +2.3% | 404,880 | 4.54 |
| 2025-12-31 | 1,797,403 | -8.7% | 446,497 | 4.03 |
| 2025-12-15 | 1,968,083 | +4.4% | 451,935 | 4.35 |
| 2025-11-28 | 1,885,003 | +24.3% | 555,681 | 3.39 |
| 2025-11-14 | 1,516,832 | +18.8% | 1,271,236 | 1.19 |
| 2025-10-31 | 1,276,536 | +13.4% | 453,585 | 2.81 |
| 2025-10-15 | 1,125,337 | +62.8% | 709,537 | 1.59 |
| 2025-09-30 | 691,184 | +42.5% | 678,569 | 1.02 |
| 2025-09-15 | 485,205 | +21.6% | 678,830 | 1.00 |
Daily short volume
FINRA Reg SHO, last 60 sessions. JSONAs of 11 September 2026, the short share of PSIX volume is 56.9%, down 16.2 points over the last five sessions. Over the last 52 readings it ranged from 31.7% (7 August 2026) to 73.1% (3 September 2026). The latest reading is 5.4 points above the 30-session average of 51.5%, on 122K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-09-11 | 69K | 122K | 56.9% | 50 |
| 2026-09-10 | 74K | 145K | 51.2% | 0 |
| 2026-09-09 | 119K | 187K | 63.6% | 0 |
| 2026-09-08 | 111K | 220K | 50.5% | 0 |
| 2026-09-04 | 112K | 165K | 67.6% | 600 |
| 2026-09-03 | 51K | 70K | 73.1% | 0 |
| 2026-09-02 | 63K | 111K | 56.8% | 0 |
| 2026-09-01 | 60K | 93K | 64.4% | 60 |
| 2026-08-31 | 51K | 100K | 50.7% | 0 |
| 2026-08-28 | 53K | 105K | 50.4% | 2 |
| 2026-08-27 | 56K | 109K | 51.1% | 0 |
| 2026-08-26 | 47K | 86K | 54.2% | 0 |
| 2026-08-25 | 37K | 66K | 54.9% | 0 |
| 2026-08-24 | 85K | 169K | 50.2% | 0 |
| 2026-08-21 | 42K | 102K | 41.5% | 0 |
| 2026-08-20 | 73K | 115K | 63.8% | 0 |
| 2026-08-19 | 68K | 143K | 47.3% | 384 |
| 2026-08-18 | 47K | 116K | 40.6% | 100 |
| 2026-08-17 | 45K | 112K | 39.8% | 0 |
| 2026-08-14 | 58K | 161K | 36.1% | 0 |
| 2026-08-13 | 83K | 209K | 39.6% | 50 |
| 2026-08-12 | 88K | 208K | 42.2% | 12 |
| 2026-08-11 | 99K | 220K | 45.2% | 15 |
| 2026-08-10 | 193K | 444K | 43.4% | 50 |
| 2026-08-07 | 168K | 529K | 31.7% | 255 |
| 2026-08-06 | 75K | 110K | 68.4% | 0 |
| 2026-08-05 | 84K | 158K | 53.0% | 0 |
| 2026-08-04 | 214K | 439K | 48.7% | 13 |
| 2026-08-03 | 102K | 215K | 47.3% | 0 |
| 2026-07-31 | 108K | 178K | 60.9% | 0 |
Fails to deliver
SEC, by settlement date. JSONAs of 10 August 2026, the fails-to-deliver balance in PSIX is 1,396 shares, down 1,577 shares over the last settlement date. Over the last 52 readings it ranged from 1 share (27 February 2026) to 53,645 shares (27 July 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-08-10 | 1,396 | $40.82 | $57K |
| 2026-08-05 | 2,973 | $34.86 | $104K |
| 2026-08-04 | 392 | $28.78 | $11K |
| 2026-08-03 | 13 | $27.61 | $359 |
| 2026-07-29 | 50 | $27.90 | $1K |
| 2026-07-27 | 53,645 | $29.96 | $1.6M |
| 2026-07-16 | 36 | $33.46 | $1K |
| 2026-07-15 | 39 | $32.63 | $1K |
| 2026-07-08 | 165 | $34.73 | $6K |
| 2026-07-06 | 411 | $37.08 | $15K |
| 2026-06-30 | 10 | $36.46 | $365 |
| 2026-06-26 | 200 | $38.71 | $8K |
| 2026-06-22 | 1,200 | $40.31 | $48K |
| 2026-06-09 | 415 | $39.85 | $17K |
| 2026-06-08 | 44,219 | $37.61 | $1.7M |
| 2026-06-04 | 63 | $40.42 | $3K |
| 2026-06-03 | 142 | $40.59 | $6K |
| 2026-06-01 | 5,707 | $41.68 | $238K |
| 2026-05-28 | 63 | $42.84 | $3K |
| 2026-05-27 | 1,327 | $42.99 | $57K |
| 2026-05-26 | 94 | $38.87 | $4K |
| 2026-05-22 | 1,145 | $39.59 | $45K |
| 2026-05-20 | 27 | $36.36 | $982 |
| 2026-05-19 | 3 | $38.93 | $117 |
| 2026-05-15 | 4,811 | $41.30 | $199K |
| 2026-05-14 | 42 | $45.11 | $2K |
| 2026-05-12 | 400 | $62.45 | $25K |
| 2026-05-05 | 168 | $67.78 | $11K |
| 2026-05-04 | 71 | $70.50 | $5K |
| 2026-04-29 | 480 | $69.15 | $33K |
Insider trades
SEC Form 4, newest first, 50 of 100 shown. JSONNo open-market insider trades were reported for PSIX in the last 90 days. The most recent filings are listed below; grants and option exercises carry a weaker signal than voluntary trades. Latest filing: Li Xun (CFO) on 2026-02-12.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-02-12 | Li Xun | CFO | Tax withholding | 3K | $92.72 | $318K | 5K |
| 2026-02-12 | Li Xun | CFO | Option exercise | 8K | $2.00 | $15K | 8K |
| 2025-12-11 | SIMPKINS FRANK P | n/a | Grant | 5K | $0.00 | $0 | 30K |
| 2025-12-11 | Shea Courtney C. | n/a | Grant | 5K | $0.00 | $0 | 5K |
| 2025-12-11 | He Hong | n/a | Grant | 5K | $0.00 | $0 | 24K |
| 2025-09-11 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 31K | $94.33 | $2.9M | 10.6M |
| 2025-09-11 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 7K | $91.72 | $618K | 10.7M |
| 2025-09-11 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 19K | $92.46 | $1.8M | 10.7M |
| 2025-09-11 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 23K | $93.64 | $2.2M | 10.6M |
| 2025-09-11 | He Hong | n/a | Sell | 2K | $94.00 | $141K | 19K |
| 2025-09-11 | Weichai America Corp. | n/a | Sell | 31K | $94.33 | $2.9M | 10.6M |
| 2025-09-11 | Weichai America Corp. | n/a | Sell | 23K | $93.64 | $2.2M | 10.6M |
| 2025-09-11 | Weichai America Corp. | n/a | Sell | 19K | $92.46 | $1.8M | 10.7M |
| 2025-09-11 | Weichai America Corp. | n/a | Sell | 7K | $91.72 | $618K | 10.7M |
| 2025-09-10 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 5K | $91.44 | $459K | 10.7M |
| 2025-09-10 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 6K | $90.28 | $569K | 10.7M |
| 2025-09-10 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 15K | $92.34 | $1.3M | 10.7M |
| 2025-09-10 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 3K | $93.50 | $235K | 10.7M |
| 2025-09-10 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 8K | $94.45 | $716K | 10.7M |
| 2025-09-10 | Weichai Power Co., Ltd. | TenPercentOwner | Sell | 571 | $95.20 | $54K | 10.7M |
| 2025-09-10 | Weichai America Corp. | n/a | Sell | 571 | $95.20 | $54K | 10.7M |
| 2025-09-10 | Weichai America Corp. | n/a | Sell | 8K | $94.45 | $716K | 10.7M |
| 2025-09-10 | Weichai America Corp. | n/a | Sell | 3K | $93.50 | $235K | 10.7M |
| 2025-09-10 | Weichai America Corp. | n/a | Sell | 15K | $92.34 | $1.3M | 10.7M |
| 2025-09-10 | Weichai America Corp. | n/a | Sell | 5K | $91.44 | $459K | 10.7M |
| 2025-09-10 | Weichai America Corp. | n/a | Sell | 6K | $90.28 | $570K | 10.7M |
| 2025-09-10 | He Hong | n/a | Sell | 1K | $95.00 | $95K | 20K |
| 2025-09-09 | Xykis Constantine | CEO | Sell | 8K | $91.31 | $717K | 0 |
| 2025-09-09 | He Hong | n/a | Sell | 3K | $92.31 | $231K | 21K |
| 2025-09-09 | He Hong | n/a | Sell | 2K | $90.00 | $135K | 24K |
| 2025-09-08 | He Hong | n/a | Sell | 1K | $89.00 | $89K | 25K |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 2K | $85.81 | $180K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 14K | $80.66 | $1.1M | 10.8M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 22K | $81.57 | $1.8M | 10.8M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 178 | $89.00 | $16K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 3K | $88.35 | $299K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 3K | $87.52 | $234K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 11K | $86.74 | $980K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 10K | $84.35 | $839K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 12K | $83.46 | $995K | 10.7M |
| 2025-08-26 | Shandong Heavy Industry Group Co., Ltd. | TenPercentOwner | Sell | 17K | $82.49 | $1.4M | 10.8M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 178 | $89.00 | $16K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 3K | $88.35 | $299K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 3K | $87.52 | $234K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 11K | $86.74 | $980K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 2K | $85.81 | $180K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 10K | $84.35 | $839K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 12K | $83.45 | $995K | 10.7M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 17K | $82.49 | $1.4M | 10.8M |
| 2025-08-26 | Weichai America Corp. | n/a | Sell | 22K | $81.57 | $1.8M | 10.8M |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are the rarer, stronger signal.
Large holders (13D and 13G)
One row per reporting person, newest filing first. JSON4 holders above 5% have filed on PSIX, 1 on Schedule 13D (active intent). The largest reported stake is Point72 Asset Management, L.P. at 6.5% of the class (1,497,155 shares), filed 2026-08-14 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 1 | Point72 Asset Management, L.P.partnership | 1.5M | 6.5% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Point72 Capital Advisors, Inc.corporation | 1.5M | 6.5% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 1 | Steven A. Cohenindividual | 1.5M | 6.5% | 2026-06-30 |
| 2025-09-22 | 13D/Ano. 22 | Gary S. Winemasterindividual | 1.5M | 6.3% | 2025-09-18 |
13F holders
Tracked managers holding PSIX at their latest 13F. JSON5 of the 30 tracked managers held PSIX at their latest 13F, $80.5M in total at quarter-end prices. Point72 Asset Management is the largest at $58.2M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 4 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Point72 Asset Management | 2026-06-30 | 1.5M | $58.2M | 0.06% | +1.5M |
| Citadel Advisors | 2026-06-30 | 228K | $8.9M | 0.00% | +93K |
| Millennium Management | 2026-06-30 | 207K | $8.0M | 0.00% | new or n/a |
| Two Sigma Investments | 2026-06-30 | 109K | $4.2M | 0.00% | +63K |
| AQR Capital Management | 2026-06-30 | 30K | $1.2M | 0.00% | +2K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q2 2026 (quarter ended 2026-06-30) POWER SOLUTIONS INTERNATIONAL, INC. reported revenue of $152.5M, down 20.5% from the same quarter a year earlier, and net income of $16.9M (0.73 diluted EPS). In FY 2025 it generated $24.1M of operating cash flow. As of 2026-06-30, cash was $70.1M against $4.8M of debt.
- Cash
- $70.1M
- Debt
- $4.8M
- Equity
- $203.1M
- Total assets
- $453.3M
- Shares outstanding
- 23,065,450
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | $152.5M | $16.9M | 11.1% | 0.73 |
| Q1 2026 | 2026-03-31 | $128.6M | $7.3M | 5.7% | 0.32 |
| Q4 2025derived | 2025-12-31 | $191.2M | n/a | n/a | n/a |
| Q3 2025 | 2025-09-30 | $203.8M | $27.6M | 13.5% | 1.20 |
| Q2 2025 | 2025-06-30 | $191.9M | $51.2M | 26.7% | 2.22 |
| Q1 2025 | 2025-03-31 | $135.4M | $19.1M | 14.1% | 0.83 |
| Q4 2024derived | 2024-12-31 | $144.3M | n/a | n/a | n/a |
| Q3 2024 | 2024-09-30 | $125.8M | $17.3M | 13.8% | 0.75 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $722.4M | n/a | $24.1M | n/a | n/a | n/a |
| FY 2024 | 2024-12-31 | $476.0M | n/a | $62.4M | n/a | n/a | n/a |
| FY 2023 | 2023-12-31 | $459.0M | n/a | $70.5M | n/a | n/a | n/a |
| FY 2022 | 2022-12-31 | $481.3M | $11.3M | -$8.8M | n/a | n/a | n/a |
| FY 2021 | 2021-12-31 | $456.3M | -$48.5M | -$61.5M | n/a | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-30 from the cover page.
What this page is
POWER SOLUTIONS INTERNATIONAL, INC. in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.
This page follows POWER SOLUTIONS INTERNATIONAL, INC. (PSIX), SEC CIK 1137091, listed on Nasdaq, classified by the SEC as engines & turbines. The cross-market tables live on the short interest and insider transactions hubs.
Source and method
- Short interest
- FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-31.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-10.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GEDGAR read every 30 minutes; 13D within five business days of crossing 5%, 13G on the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC XBRL company factsRefreshed weekly from the SEC's structured data; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
- Insider trades
- SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-02-12.JSON and CSV
- Company record
- EDGAR filing index for CIK 1137091Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 30 requests a minute without a key, 120 a minute with a key from a free account.
Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 14 Sep 05:40 UTC.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of PSIX is sold short?
What is PSIX's daily short volume?
Does PSIX have fails to deliver?
Are PSIX insiders buying or selling?
Who owns more than 5% of PSIX?
What did PSIX report last quarter?
Which funds hold PSIX?
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.