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Livermore
Livermore
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Idex Corp

IEX
Exchange
NYSE
Industry
Pumps & Pumping Equipment
SEC CIK
0000832101

No open-market purchases or sales by Idex Corp insiders were filed in the last 90 days; 696 institutions reported holding it in 13F filings for Q2 2026, worth $17.0B in total; Weitz Investment 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
2.40M
Shares, settlement Oct 30, 2026
Change
−88.2K
−3.6% vs. Oct 15, 2026
Days to cover
2.77
Short interest ÷ average daily volume
Average daily volume
865.0K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,246,692 sharesNov 15, 2024: 1,560,226 sharesNov 29, 2024: 1,424,720 sharesDec 13, 2024: 1,361,122 sharesDec 31, 2024: 1,200,846 sharesJan 15, 2025: 1,174,097 sharesJan 31, 2025: 1,276,655 sharesFeb 14, 2025: 984,811 sharesFeb 28, 2025: 1,075,968 sharesMar 14, 2025: 1,117,357 sharesMar 31, 2025: 1,076,975 sharesApr 15, 2025: 1,195,358 sharesApr 30, 2025: 1,255,832 sharesMay 15, 2025: 1,518,967 sharesMay 30, 2025: 1,535,101 sharesJun 13, 2025: 1,952,339 sharesJun 30, 2025: 2,440,221 sharesJul 15, 2025: 2,596,772 sharesJul 31, 2025: 2,158,723 sharesAug 15, 2025: 1,928,027 sharesAug 29, 2025: 2,025,520 sharesSep 15, 2025: 2,070,669 sharesSep 30, 2025: 2,338,884 sharesOct 15, 2025: 2,251,901 sharesOct 31, 2025: 2,282,961 sharesNov 14, 2025: 2,426,961 sharesNov 28, 2025: 2,608,815 sharesDec 15, 2025: 2,587,579 sharesDec 31, 2025: 2,614,601 sharesJan 15, 2026: 2,704,383 sharesJan 30, 2026: 2,522,541 sharesFeb 13, 2026: 2,060,105 sharesFeb 27, 2026: 2,088,993 sharesMar 13, 2026: 2,236,293 sharesMar 31, 2026: 2,226,972 sharesApr 15, 2026: 2,083,541 sharesApr 30, 2026: 1,961,102 sharesMay 15, 2026: 2,056,174 sharesMay 29, 2026: 2,246,093 sharesJun 15, 2026: 2,502,336 sharesJun 30, 2026: 2,346,885 sharesJul 15, 2026: 2,356,609 sharesJul 31, 2026: 1,894,657 sharesAug 14, 2026: 1,746,057 sharesAug 31, 2026: 1,892,602 sharesSep 15, 2026: 2,094,342 sharesSep 30, 2026: 2,519,546 sharesOct 15, 2026: 2,484,682 sharesOct 30, 2026: 2,396,503 shares
Short interest in IEX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20262.40M−88.2K−3.6%865.0K2.77
Oct 15, 20262.48M−34.9K−1.4%679.0K3.66
Sep 30, 20262.52M+425.2K+20.3%672.0K3.75
Sep 15, 20262.09M+201.7K+10.7%510.4K4.10
Aug 31, 20261.89M+146.5K+8.4%561.8K3.37
Aug 14, 20261.75M−148.6K−7.8%527.3K3.31
Jul 31, 20261.89M−462.0K−19.6%922.9K2.05
Jul 15, 20262.36M+9.72K+0.4%572.3K4.12
Jun 30, 20262.35M−155.5K−6.2%852.8K2.75
Jun 15, 20262.50M+256.2K+11.4%593.5K4.22
May 29, 20262.25M+189.9K+9.2%705.8K3.18
May 15, 20262.06M+95.1K+4.9%654.4K3.14
Apr 30, 20261.96M−122.4K−5.9%754.0K2.60
Apr 15, 20262.08M−143.4K−6.4%681.9K3.06
Mar 31, 20262.23M−9.32K−0.4%1.13M1.98
Mar 13, 20262.24M+147.3K+7.1%637.3K3.51
Feb 27, 20262.09M+28.9K+1.4%619.0K3.37
Feb 13, 20262.06M−462.4K−18.3%1.40M1.47
Jan 30, 20262.52M−181.8K−6.7%802.3K3.14
Jan 15, 20262.70M+89.8K+3.4%555.8K4.87
Dec 31, 20252.61M+27.0K+1.0%576.8K4.53
Dec 15, 20252.59M−21.2K−0.8%640.6K4.04
Nov 28, 20252.61M+181.9K+7.5%584.5K4.46
Nov 14, 20252.43M+144.0K+6.3%658.4K3.69
Oct 31, 20252.28M+31.1K+1.4%677.6K3.37
Oct 15, 20252.25M−87.0K−3.7%579.6K3.89
Sep 30, 20252.34M+268.2K+13.0%790.5K2.96
Sep 15, 20252.07M+45.1K+2.2%686.0K3.02
Aug 29, 20252.03M+97.5K+5.1%678.0K2.99
Aug 15, 20251.93M−230.7K−10.7%847.2K2.28
Jul 31, 20252.16M−438.0K−16.9%815.0K2.65
Jul 15, 20252.60M+156.6K+6.4%702.8K3.70
Jun 30, 20252.44M+487.9K+25.0%892.3K2.73
Jun 13, 20251.95M+417.2K+27.2%535.1K3.65
May 30, 20251.54M+16.1K+1.1%561.9K2.73
May 15, 20251.52M+263.1K+21.0%639.8K2.37
Apr 30, 20251.26M+60.5K+5.1%799.3K1.57
Apr 15, 20251.20M+118.4K+11.0%899.7K1.33
Mar 31, 20251.08M−40.4K−3.6%560.2K1.92
Mar 14, 20251.12M+41.4K+3.9%707.2K1.58
Feb 28, 20251.08M+91.2K+9.3%462.6K2.33
Feb 14, 2025984.8K−291.8K−22.9%790.4K1.25
Jan 31, 20251.28M+102.6K+8.7%361.6K3.53
Jan 15, 20251.17M−26.7K−2.2%507.6K2.31
Dec 31, 20241.20M−160.3K−11.8%576.8K2.08
Dec 13, 20241.36M−63.6K−4.5%455.7K2.99
Nov 29, 20241.42M−135.5K−8.7%548.1K2.60
Nov 15, 20241.56M+313.5K+25.2%749.0K2.08
Oct 31, 20241.25M−16.3K−1.3%480.4K2.60

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 IEX by settlement date
Settlement dateSharesPriceValue
Oct 14, 2026883$237.19$209.4K
Oct 13, 202673$235.77$17.2K
Oct 1, 202622$227.98$5.02K
Sep 30, 202665$230.43$15.0K
Sep 24, 2026461$229.67$105.9K
Sep 15, 2026840$222.14$186.6K
Aug 28, 20261,923$233.98$449.9K
Aug 27, 2026605$234.89$142.1K
Aug 24, 20267$234.39$1.64K
Aug 18, 20269,525$240.39$2.29M
Aug 17, 202651$238.94$12.2K
Aug 13, 20262,178$240.52$523.9K
Aug 12, 20262,214$237.31$525.4K
Jul 30, 20261,547$229.52$355.1K
Jul 15, 202653$222.74$11.8K
Jun 26, 2026174$228.07$39.7K
Jun 25, 2026210$222.16$46.7K
Jun 17, 2026383$223.81$85.7K
Jun 12, 2026155$216.90$33.6K
Jun 4, 2026927$215.34$199.6K
May 18, 202614$207.69$2.91K
May 13, 2026226$213.85$48.3K
Mar 25, 20267$192.88$1.35K
Mar 4, 2026892$208.96$186.4K
Feb 24, 202644$206.65$9.09K
Feb 20, 20264,122$207.86$856.8K
Feb 6, 2026106$212.94$22.6K
Feb 5, 202624,661$212.25$5.23M
Feb 4, 2026626$201.61$126.2K
Jan 30, 202692$199.72$18.4K

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 IEX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 13, 2026133,2510234,30956.9%
Nov 12, 202674,4350208,31035.7%
Nov 11, 2026109,901160220,20149.9%
Nov 10, 202661,179157144,21242.4%
Nov 9, 202678,4635243,77932.2%
Nov 6, 2026138,510319431,45032.1%
Nov 5, 2026137,42924342,82740.1%
Nov 4, 2026238,06724466,08251.1%
Nov 3, 2026116,4347212,41454.8%
Nov 2, 2026108,321200321,18933.7%
Oct 30, 2026109,7270237,66046.2%
Oct 29, 2026236,7273469,74850.4%
Oct 28, 2026419,5891776,34254.0%
Oct 27, 2026191,99716457,81641.9%
Oct 26, 2026115,2490231,31849.8%
Oct 23, 2026151,125343267,35956.5%
Oct 22, 2026163,1765365,63744.6%
Oct 21, 202686,384149284,62630.4%
Oct 20, 202692,1747225,69340.8%
Oct 19, 202676,0805191,23239.8%
Oct 16, 2026125,3225254,02349.3%
Oct 15, 2026157,5780304,83251.7%
Oct 14, 2026106,093106225,35447.1%
Oct 13, 2026104,621200310,04733.7%
Oct 12, 202673,137223219,42433.3%
Oct 9, 202664,075154223,62228.7%
Oct 8, 2026127,4030367,50234.7%
Oct 7, 2026151,0002,305282,12653.5%
Oct 6, 202698,212265208,27947.2%
Oct 5, 2026135,7122254,38053.4%

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 IEX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T11,156,04439,241299,59610,34679.4%
Oct 12, 2026T11,136,24336,345252,5539,14881.8%
Oct 5, 2026T11,160,22738,608277,46810,10880.7%
Sep 28, 2026T11,010,45935,197579,8819,30363.5%
Sep 21, 2026T1906,24232,354757,3978,84354.5%
Sep 14, 2026T1749,66128,998632,9138,26254.2%
Sep 7, 2026T1614,17624,510161,0555,69179.2%
Aug 31, 2026T1806,67032,268407,8078,56966.4%
Aug 24, 2026T1806,56129,273201,6077,15480.0%
Aug 17, 2026T1914,39434,742374,6777,43870.9%
Aug 10, 2026T1945,64832,325254,9228,62478.8%
Aug 3, 2026T1938,52942,593189,1637,11883.2%