XOOMAR

POWER INTEGRATIONS INC (POWI)

Every FINRA and SEC series the site collects for POWER INTEGRATIONS 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 semiconductors & related devices.

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5.7M

Short interest

settlement 2026-08-31

8.1

Days to cover

+2.6% vs prior

82.9%

Short share of volume

2026-09-11

94

Fails to deliver

settlement 2026-08-05

$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 JSON

As of 31 August 2026, short interest in POWI is 5,675,387 shares, up 109,510 shares over the last month. Over the last 48 readings it ranged from 2,395,658 shares (15 August 2025) to 5,675,387 shares (31 August 2026). The latest reading sits at the top of that range. At the reported average volume of 697K shares a day that is 8.1 days to cover, elevated.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-315,675,387+2.6%696,8758.14
2026-08-145,531,780-0.6%603,1539.17
2026-07-315,565,877+1.6%671,9718.28
2026-07-155,476,352+17.1%790,8316.92
2026-06-304,676,081-0.8%1,138,7004.11
2026-06-154,716,260+3.3%1,091,2434.32
2026-05-294,566,868+14.1%1,749,3362.61
2026-05-154,002,506-8.2%1,298,7473.08
2026-04-304,361,662+5.3%1,347,3153.24
2026-04-154,143,862-13.3%676,5086.13
2026-03-314,777,527-2.6%954,0005.01
2026-03-134,905,458+9.8%1,015,6234.83
2026-02-274,469,101+10.4%666,4606.71
2026-02-134,048,976-7.6%1,033,3093.92
2026-01-304,383,038-14.8%922,1854.75
2026-01-155,146,137+8.1%880,8385.84
2025-12-314,759,463+14.6%1,602,2642.97
2025-12-154,153,504+1.3%836,6364.96
2025-11-284,101,544-1.9%862,4644.76
2025-11-144,181,892+13.0%995,9694.20
2025-10-313,700,314-5.8%1,114,1393.32
2025-10-153,930,339+57.7%2,200,1211.79
2025-09-302,492,593+0.8%706,5923.53
2025-09-152,473,563-3.0%583,7304.24

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of POWI volume is 82.9%, up 16.1 points over the last five sessions. Over the last 52 readings it ranged from 37.1% (2 September 2026) to 88.1% (21 July 2026). The latest reading is 21.2 points above the 30-session average of 61.7%, on 434K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11360K434K82.9%10
2026-09-1097K133K72.9%19
2026-09-09160K313K51.2%0
2026-09-08158K304K52.1%0
2026-09-04111K182K61.2%0
2026-09-03200K300K66.8%0
2026-09-02187K505K37.1%50
2026-09-01211K514K41.1%0
2026-08-31149K273K54.4%10
2026-08-28239K331K72.1%0
2026-08-27197K322K61.2%0
2026-08-26210K308K68.0%0
2026-08-25127K188K67.3%0
2026-08-24202K376K53.8%0
2026-08-21215K293K73.3%12
2026-08-20180K264K68.1%11
2026-08-19182K275K66.1%0
2026-08-18181K385K47.0%330
2026-08-17134K218K61.3%173
2026-08-1491K177K51.3%0
2026-08-1390K128K70.1%0
2026-08-12125K164K76.3%9
2026-08-11129K192K67.5%0
2026-08-10159K275K57.8%32
2026-08-07160K241K66.6%100
2026-08-06309K365K84.7%0
2026-08-05210K417K50.4%0
2026-08-04115K231K49.6%342
2026-08-03164K285K57.6%300
2026-07-31137K228K60.3%0

Fails to deliver

SEC, by settlement date. JSON

As of 5 August 2026, the fails-to-deliver balance in POWI is 94 shares, down 5 shares over the last settlement date. Over the last 52 readings it ranged from 1 share (2 June 2026) to 215,836 shares (29 June 2026). The latest reading sits at the bottom of that range.

SettlementShares failedPriceValue
2026-08-0594$64.57$6K
2026-08-0399$60.71$6K
2026-07-30398$56.57$23K
2026-07-27114$63.46$7K
2026-07-24278$70.87$20K
2026-07-22187$74.39$14K
2026-07-20682$70.45$48K
2026-07-1722$69.84$2K
2026-07-16639$71.02$45K
2026-07-15195$70.76$14K
2026-07-141,612$69.44$112K
2026-07-131,241$72.07$89K
2026-07-101,246$70.83$88K
2026-07-0911$66.46$731
2026-07-02117$80.27$9K
2026-06-303,305$78.96$261K
2026-06-29215,836$79.37$17.1M
2026-06-2635$84.81$3K
2026-06-25840$81.86$69K
2026-06-188,947$80.73$722K
2026-06-1231,942$77.76$2.5M
2026-06-10213$74.71$16K
2026-06-045$84.99$425
2026-06-021$81.91$82
2026-05-2813,764$86.90$1.2M
2026-05-261,528$70.85$108K
2026-05-1977,407$67.62$5.2M
2026-05-1863,503$73.24$4.7M
2026-05-146,882$71.15$490K
2026-05-1260$74.34$4K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

No open-market insider trades were reported for POWI 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: Arienzo Wendy on 2026-07-01.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-07-01Arienzo Wendyn/aGrant2K$0.00$020K
2026-05-29Gupta SunilSr. Vice President, OperationsSell7K$83.67$574K64K
2026-05-28BALAKRISHNAN BALUn/aSell29K$87.05$2.5M280K
2026-05-28BALAKRISHNAN BALUn/aSell95K$86.25$8.2M309K
2026-05-27BRATHWAITE NICHOLASn/aSell2K$86.62$150K22K
2026-05-26Gupta SunilSr. Vice President, OperationsSell16K$82.18$1.3M71K
2026-05-26BRATHWAITE NICHOLASn/aSell7K$82.71$550K24K
2026-05-26BALAKRISHNAN BALUn/aSell71K$82.26$5.8M404K
2026-05-26BALAKRISHNAN BALUn/aSell48K$80.93$3.9M475K
2026-05-21BALAKRISHNAN BALUn/aSell54K$70.71$3.8M522K
2026-05-15Balow MichaelSr. VP, Worldwide SalesGrant33K$0.00$033K
2026-05-13BRATHWAITE NICHOLASn/aSell7K$72.41$499K31K
2026-04-02Jain GaganVP, Worldwide SalesSell105$51.93$5K26K
2026-04-02Jain GaganVP, Worldwide SalesSell53$51.93$3K26K
2026-04-02Jain GaganVP, Worldwide SalesSell64$51.93$3K26K
2026-04-02Jain GaganVP, Worldwide SalesSell91$51.93$5K26K
2026-02-27Lloyd Jennifer APresident and CEOGrant73K$0.00$0149K
2026-02-25Jain GaganVP, Worldwide SalesSell3K$48.22$155K31K
2026-02-25Jain GaganVP, Worldwide SalesSell262$48.30$13K34K
2026-02-10Gupta SunilVP of OperationsSell1K$45.97$58K97K
2026-02-10BALAKRISHNAN BALUn/aSell5K$47.20$236K576K
2026-02-09Lloyd Jennifer APresident and CEOSell3K$46.57$155K76K
2026-02-09Jain GaganVP, Worldwide SalesDisposition938$46.57$44K34K
2026-02-09Gupta SunilVP of OperationsSell1K$46.57$65K98K
2026-02-09BALAKRISHNAN BALUn/aSell6K$46.53$296K581K
2026-02-06Lloyd Jennifer APresident and CEOGrant6K$0.00$080K
2026-02-06Jain GaganVP, Worldwide SalesGrant3K$0.00$035K
2026-02-06Gupta SunilVP of OperationsGrant4K$0.00$0100K
2026-02-06BALAKRISHNAN BALUn/aGrant12K$0.00$0588K
2026-02-03Jain GaganVP, Worldwide SalesSell94$45.58$4K33K
2026-02-03Jain GaganVP, Worldwide SalesSell63$45.58$3K33K
2026-02-03Gupta SunilVP of OperationsSell1K$45.58$64K96K
2026-02-03Gupta SunilVP of OperationsSell768$45.58$35K97K
2026-02-03BALAKRISHNAN BALUn/aSell7K$44.75$295K575K
2026-02-03BALAKRISHNAN BALUn/aSell3K$44.75$156K582K
2026-02-02Erba NancyChief Financial OfficerGrant64K$0.00$064K
2026-01-29Jain GaganVP, Worldwide SalesSell995$46.50$46K33K
2026-01-29Gupta SunilVP of OperationsSell2K$46.50$79K98K
2026-01-29BALAKRISHNAN BALUn/aSell6K$46.59$260K585K
2026-01-27Gupta SunilSr. Vice President, OperationsGrant23K$0.00$090K
2026-01-27Jain GaganVP, Worldwide SalesGrant11K$0.00$029K
2026-01-27Jain GaganVP, Worldwide SalesGrant16K$0.00$034K
2026-01-27Gupta SunilVP of OperationsGrant33K$0.00$099K
2025-11-24Jain GaganVP, Worldwide SalesSell1K$33.80$35K17K
2025-11-04Verity Robert EricInterim CFOSell110$40.21$4K8K
2025-11-04Jain GaganVP, Worldwide SalesSell111$40.22$4K18K
2025-11-03Verity Robert EricInterim CFOGrant2K$0.00$08K
2025-09-24Jain GaganVP, Worldwide SalesSell456$41.43$19K18K
2025-08-22Bailey DougFormer VP MarketingSell15K$47.38$711K36K
2025-08-18Bailey DougFormer VP MarketingSell17K$46.41$788K51K

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. JSON

11 holders above 5% have filed on POWI, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 14.9% of the class (8,227,124 shares), filed 2026-01-21 for an event on 2025-12-31.

FiledFormHolderSharesOf classEvent
2026-06-0413G/Ano. 13Neuberger Berman Group LLCparent holding company2.5M4.5%2026-05-31
2026-06-0413G/Ano. 13Neuberger Berman Investment Advisers LLCinvestment adviser2.5M4.4%2026-05-31
2026-05-1513GWellington Management Group LLPparent holding company3.4M6.0%2026-03-31
2026-05-1513GWellington Investment Advisors Holdings LLPparent holding company3.4M6.0%2026-03-31
2026-05-1513GWellington Group Holdings LLPparent holding company3.4M6.0%2026-03-31
2026-05-1513GWellington Management Company LLPinvestment adviser3.4M5.5%2026-03-31
2026-04-3013GVanguard Capital Managementinvestment adviser2.9M5.3%2026-03-31
2026-04-2913GVanguard Portfolio Managementinvestment adviser5.0M9.1%2026-03-31
2026-03-2713G/Ano. 17The Vanguard Groupinvestment adviser00.0%2026-03-13
2026-02-0913GSTATE STREET CORPORATIONparent holding company3.4M6.1%2025-12-31
2026-01-3013G/Ano. 16The Vanguard Groupinvestment adviser7.6M13.7%2025-12-31
2026-01-2113G/Ano. 5BlackRock, Inc.parent holding company8.2M14.9%2025-12-31
2025-11-1013GSTATE STREET CORPORATIONparent holding company2.9M5.1%2025-09-30

13F holders

Tracked managers holding POWI at their latest 13F. JSON

5 of the 30 tracked managers held POWI at their latest 13F, $16.3M in total at quarter-end prices. Citadel Advisors is the largest at $7.8M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 0 added shares and 4 cut.

FundQuarterSharesValueOf portfolioChange in shares
Citadel Advisors2026-06-3093K$7.8M0.00%-60K
AQR Capital Management2026-06-3044K$3.7M0.00%-94K
D. E. Shaw & Co.2026-06-3026K$2.2M0.00%-61K
Bridgewater Associates2026-06-3018K$1.5M0.01%new or n/a
Two Sigma Investments2026-06-3014K$1.1M0.00%-9K

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. JSON

In Q2 2026 (quarter ended 2026-06-30) POWER INTEGRATIONS INC reported revenue of $118.9M, up 2.7% from the same quarter a year earlier, and net income of $9.8M (0.17 diluted EPS). In FY 2025 it generated $111.5M of operating cash flow and spent $98.1M on buybacks and $47.2M on dividends.

Cash
$70.6M
Equity
$680.5M
Total assets
$779.0M
Shares outstanding
55,873,298

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30$118.9M$9.8M8.3%0.17
Q1 20262026-03-31$108.3M$3.3M3.0%0.06
Q4 2025derived2025-12-31$103.2Mn/an/an/a
Q3 20252025-09-30$118.9M-$1.4M-1.1%-0.02
Q2 20252025-06-30$115.9M$1.4M1.2%0.02
Q1 20252025-03-31$105.5M$8.8M8.3%0.15
Q4 2024derived2024-12-31$105.3Mn/an/an/a
Q3 20242024-09-30$115.8M$14.3M12.3%0.25

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$443.5Mn/a$111.5M$24.4M$98.1M$47.2M
FY 20242024-12-31$419.0Mn/a$81.2M$17.3M$27.9M$46.0M
FY 20232023-12-31$444.5Mn/a$65.8M$20.9M$55.3M$44.0M
FY 20222022-12-31$651.1Mn/a$215.3M$39.2M$311.1M$41.5M
FY 20212021-12-31$703.3Mn/a$230.9M$47.3M$73.9M$32.6M

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 2026-08-03 from the cover page.

What this page is

POWER INTEGRATIONS 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 INTEGRATIONS INC (POWI), SEC CIK 833640, listed on Nasdaq, classified by the SEC as semiconductors & related devices. 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 2026-08-05.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 2026-06-04.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 2026-07-01.JSON and CSV
Company record
EDGAR filing index for CIK 833640Ticker, 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.

Datasets

Frequently Asked Questions

How much of POWI is sold short?
5,675,387 shares were held short at the 2026-08-31 settlement, 8.1 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is POWI's daily short volume?
On 2026-09-11, 359,776 of the 434,012 POWI shares reported to FINRA were sold short, 82.9% of the day's reported volume. Short volume is a flow for one day, not a position.
Does POWI have fails to deliver?
The SEC's latest file shows 94 POWI shares failed to deliver at settlement 2026-08-05. Fails are reported per settlement date and published twice a month with a lag.
Are POWI insiders buying or selling?
No open-market insider trades were reported for POWI 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: Arienzo Wendy on 2026-07-01.
Who owns more than 5% of POWI?
11 holders above 5% have filed on POWI, all on Schedule 13G (passive). The largest reported stake is BlackRock, Inc. at 14.9% of the class (8,227,124 shares), filed 2026-01-21 for an event on 2025-12-31.
What did POWI report last quarter?
In Q2 2026 (quarter ended 2026-06-30) POWER INTEGRATIONS INC reported revenue of $118.9M, up 2.7% from the same quarter a year earlier, and net income of $9.8M (0.17 diluted EPS). In FY 2025 it generated $111.5M of operating cash flow and spent $98.1M on buybacks and $47.2M on dividends.
Which funds hold POWI?
5 of the 30 tracked managers held POWI at their latest 13F, $16.3M in total at quarter-end prices. Citadel Advisors is the largest at $7.8M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 0 added shares and 4 cut.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.