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Idacorp Inc

IDA
Exchange
NYSE
Industry
Electric Services
SEC CIK
0001057877

No open-market purchases or sales by Idacorp Inc insiders were filed in the last 90 days; 571 institutions reported holding it in 13F filings for Q2 2026, worth $9.25B in total; Soros Fund Management is the only superinvestor holding it.

Four kinds of short-selling data, each measuring something different:

  • Short interest: shares sold short and not yet bought back, as of a settlement date. FINRA publishes it twice a month, about eight business days after the settlement date.
  • Daily short volume: shares sold short each day in off-exchange trades reported to FINRA. It counts trades, not open positions, and is published the next day.
  • Fails-to-deliver: shares not delivered by the settlement date. The SEC publishes them twice a month, about two weeks late.
  • ATS (dark pool) volume: weekly volume on alternative trading systems and other off-exchange venues. FINRA publishes it two to four weeks after the week.

More in the glossary.

Short interest

Shares sold short and not yet bought back, from FINRA, on every settlement date in the last two years.

Short interest
4.49M
Shares, settlement Oct 30, 2026
Change
−407.8K
−8.3% vs. Oct 15, 2026
Days to cover
8.55
Short interest ÷ average daily volume
Average daily volume
525.2K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 662,592 sharesNov 15, 2024: 1,107,531 sharesNov 29, 2024: 934,652 sharesDec 13, 2024: 901,112 sharesDec 31, 2024: 1,044,550 sharesJan 15, 2025: 1,045,499 sharesJan 31, 2025: 1,071,395 sharesFeb 14, 2025: 1,105,673 sharesFeb 28, 2025: 1,159,652 sharesMar 14, 2025: 1,214,508 sharesMar 31, 2025: 1,436,182 sharesApr 15, 2025: 1,589,524 sharesApr 30, 2025: 1,479,466 sharesMay 15, 2025: 2,977,813 sharesMay 30, 2025: 3,026,777 sharesJun 13, 2025: 3,518,218 sharesJun 30, 2025: 3,266,931 sharesJul 15, 2025: 3,281,141 sharesJul 31, 2025: 3,446,434 sharesAug 15, 2025: 3,437,853 sharesAug 29, 2025: 3,413,036 sharesSep 15, 2025: 3,496,413 sharesSep 30, 2025: 3,678,795 sharesOct 15, 2025: 3,405,479 sharesOct 31, 2025: 3,419,787 sharesNov 14, 2025: 3,624,347 sharesNov 28, 2025: 3,882,120 sharesDec 15, 2025: 4,151,604 sharesDec 31, 2025: 4,392,102 sharesJan 15, 2026: 4,203,372 sharesJan 30, 2026: 3,962,399 sharesFeb 13, 2026: 4,199,623 sharesFeb 27, 2026: 4,242,780 sharesMar 13, 2026: 4,284,373 sharesMar 31, 2026: 4,446,449 sharesApr 15, 2026: 4,363,498 sharesApr 30, 2026: 4,472,830 sharesMay 15, 2026: 4,798,443 sharesMay 29, 2026: 3,622,664 sharesJun 15, 2026: 4,626,260 sharesJun 30, 2026: 5,174,888 sharesJul 15, 2026: 4,607,642 sharesJul 31, 2026: 4,556,328 sharesAug 14, 2026: 4,505,224 sharesAug 31, 2026: 4,682,387 sharesSep 15, 2026: 5,266,110 sharesSep 30, 2026: 6,329,791 sharesOct 15, 2026: 4,899,224 sharesOct 30, 2026: 4,491,390 shares
Short interest in IDA by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20264.49M−407.8K−8.3%525.2K8.55
Oct 15, 20264.90M−1.43M−22.6%672.9K7.28
Sep 30, 20266.33M+1.06M+20.2%677.5K9.34
Sep 15, 20265.27M+583.7K+12.5%530.9K9.92
Aug 31, 20264.68M+177.2K+3.9%434.5K10.78
Aug 14, 20264.51M−51.1K−1.1%512.4K8.79
Jul 31, 20264.56M−51.3K−1.1%487.1K9.35
Jul 15, 20264.61M−567.2K−11.0%610.6K7.55
Jun 30, 20265.17M+548.6K+11.9%758.7K6.82
Jun 15, 20264.63M+1.00M+27.7%529.2K8.74
May 29, 20263.62M−1.18M−24.5%601.4K6.02
May 15, 20264.80M+325.6K+7.3%485.9K9.88
Apr 30, 20264.47M+109.3K+2.5%517.6K8.64
Apr 15, 20264.36M−83.0K−1.9%430.0K10.15
Mar 31, 20264.45M+162.1K+3.8%528.0K8.42
Mar 13, 20264.28M+41.6K+1.0%378.3K11.33
Feb 27, 20264.24M+43.2K+1.0%479.9K8.84
Feb 13, 20264.20M+237.2K+6.0%523.4K8.02
Jan 30, 20263.96M−241.0K−5.7%508.9K7.79
Jan 15, 20264.20M−188.7K−4.3%458.7K9.16
Dec 31, 20254.39M+240.5K+5.8%412.3K10.65
Dec 15, 20254.15M+269.5K+6.9%472.6K8.78
Nov 28, 20253.88M+257.8K+7.1%303.6K12.78
Nov 14, 20253.62M+204.6K+6.0%404.9K8.95
Oct 31, 20253.42M+14.3K+0.4%402.9K8.49
Oct 15, 20253.41M−273.3K−7.4%475.5K7.16
Sep 30, 20253.68M+182.4K+5.2%421.9K8.72
Sep 15, 20253.50M+83.4K+2.4%319.2K10.95
Aug 29, 20253.41M−24.8K−0.7%327.7K10.41
Aug 15, 20253.44M−8.58K−0.3%355.4K9.67
Jul 31, 20253.45M+165.3K+5.0%548.4K6.28
Jul 15, 20253.28M+14.2K+0.4%436.4K7.52
Jun 30, 20253.27M−251.3K−7.1%456.3K7.16
Jun 13, 20253.52M+491.4K+16.2%532.5K6.61
May 30, 20253.03M+49.0K+1.6%552.9K5.47
May 15, 20252.98M+1.50M+101.3%700.7K4.25
Apr 30, 20251.48M−110.1K−6.9%342.7K4.32
Apr 15, 20251.59M+153.3K+10.7%451.6K3.52
Mar 31, 20251.44M+221.7K+18.3%302.2K4.75
Mar 14, 20251.21M+54.9K+4.7%342.3K3.55
Feb 28, 20251.16M+54.0K+4.9%392.1K2.96
Feb 14, 20251.11M+34.3K+3.2%235.2K4.70
Jan 31, 20251.07M+25.9K+2.5%283.6K3.78
Jan 15, 20251.05M+949+0.1%318.1K3.29
Dec 31, 20241.04M+143.4K+15.9%305.3K3.42
Dec 13, 2024901.1K−33.5K−3.6%287.1K3.14
Nov 29, 2024934.7K−172.9K−15.6%332.8K2.81
Nov 15, 20241.11M+444.9K+67.2%583.1K1.90
Oct 31, 2024662.6K−69.8K−9.5%250.6K2.64

Fails-to-deliver

Shares that weren't delivered by the settlement date, from the SEC, for the last 30 dates with fails. The price is the previous day's closing price published by the SEC.

Fails-to-deliver in IDA by settlement date
Settlement dateSharesPriceValue
Oct 13, 2026295$136.37$40.2K
Oct 9, 20261,022$134.08$137.0K
Oct 1, 20261,844$130.73$241.1K
Sep 30, 20269,867$131.12$1.29M
Sep 29, 202661,821$128.81$7.96M
Sep 22, 2026509$130.47$66.4K
Sep 18, 202659$133.24$7.86K
Sep 16, 2026927$132.68$123.0K
Sep 15, 2026881$133.94$118.0K
Sep 11, 2026193$135.45$26.1K
Sep 10, 202614,815$136.25$2.02M
Sep 9, 2026810$137.89$111.7K
Sep 8, 20262,710$135.70$367.7K
Aug 31, 202617,378$135.78$2.36M
Aug 24, 20261,195$137.20$164.0K
Aug 14, 202625,033$141.12$3.53M
Aug 6, 202613$143.24$1.86K
Aug 5, 20261,268$144.57$183.3K
Jul 31, 20261,567$141.90$222.4K
Jul 29, 2026676$148.64$100.5K
Jul 17, 202694$151.11$14.2K
Jul 10, 2026731$148.00$108.2K
Jul 9, 2026509$149.19$75.9K
Jul 6, 2026313$154.55$48.4K
Jul 1, 20265,800$151.30$877.5K
Jun 30, 2026158,121$152.18$24.1M
Jun 24, 20268,934$145.21$1.30M
Jun 23, 202680$142.72$11.4K
Jun 22, 202636,999$142.37$5.27M
Jun 18, 2026554$141.95$78.6K

Daily short volume

Off-exchange short-sale volume, not short interest: shares sold short each day in trades reported to FINRA, for the last 30 trading days.

The short volume ratio isn't a sentiment gauge: market makers sell short to fill buy orders and to hedge, so short sales are usually about half of off-exchange volume.

Off-exchange short volume in IDA by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026222,4018257,79586.3%
Nov 9, 2026138,0910210,08065.7%
Nov 6, 2026135,78591172,41178.8%
Nov 5, 2026163,00229229,39471.1%
Nov 4, 2026144,77914236,10661.3%
Nov 3, 202675,8370128,32359.1%
Nov 2, 2026151,89943204,12174.4%
Oct 30, 2026122,9180183,21267.1%
Oct 29, 2026103,4800190,27954.4%
Oct 28, 202672,873198139,11752.4%
Oct 27, 202652,861306140,31637.7%
Oct 26, 202656,0520100,20455.9%
Oct 23, 202691,045518172,94752.6%
Oct 22, 202683,0180116,92271.0%
Oct 21, 2026107,9688163,97765.8%
Oct 20, 202679,4240110,15372.1%
Oct 19, 202694,1850123,75876.1%
Oct 16, 2026107,7450162,30066.4%
Oct 15, 2026129,8470245,85452.8%
Oct 14, 202698,3360187,08652.6%
Oct 13, 2026124,539479199,74762.3%
Oct 12, 2026100,16622161,20162.1%
Oct 9, 2026143,09614216,40466.1%
Oct 8, 2026157,90711199,90079.0%
Oct 7, 202672,4120130,24655.6%
Oct 6, 2026109,8660301,49136.4%
Oct 5, 2026118,72272174,52968.0%
Oct 2, 2026176,79530251,97970.2%
Oct 1, 2026152,4153218,48269.8%
Sep 30, 2026147,318468172,42785.4%

ATS (dark pool) volume

Weekly volume on alternative trading systems (ATS) and other off-exchange (OTC) venues, from FINRA, for the last 12 weeks. ATS share is ATS volume ÷ (ATS + OTC volume), not a share of all trading.

Weekly ATS and OTC volume in IDA
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T1557,81723,767501,8767,66352.6%
Oct 12, 2026T1820,12028,621359,7917,51069.5%
Oct 5, 2026T1751,88427,460441,7617,44163.0%
Sep 28, 2026T1891,78633,371642,4298,38758.1%
Sep 21, 2026T1683,25527,354387,7346,21863.8%
Sep 14, 2026T1643,08426,748715,9487,24747.3%
Sep 7, 2026T1686,45628,344306,7236,35669.1%
Aug 31, 2026T1578,27124,983310,1837,32565.1%
Aug 24, 2026T1565,85322,643275,0636,35567.3%
Aug 17, 2026T1524,48625,413313,0835,68062.6%
Aug 10, 2026T1718,50323,050573,7476,59655.6%
Aug 3, 2026T1614,01827,331365,0415,92062.7%