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Kirby Corp

KEX
Exchange
NYSE
Industry
Water Transportation
SEC CIK
0000056047

In the last 90 days, Kirby Corp insiders filed 0 open-market purchases and 1 sale; 470 institutions reported holding it in 13F filings for Q2 2026, worth $7.23B in total; no superinvestor holds 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
2.42M
Shares, settlement Oct 30, 2026
Change
+19.7K
+0.8% vs. Oct 15, 2026
Days to cover
3.47
Short interest ÷ average daily volume
Average daily volume
699.5K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 882,774 sharesNov 15, 2024: 797,140 sharesNov 29, 2024: 716,778 sharesDec 13, 2024: 599,929 sharesDec 31, 2024: 940,666 sharesJan 15, 2025: 1,242,811 sharesJan 31, 2025: 1,251,067 sharesFeb 14, 2025: 1,500,414 sharesFeb 28, 2025: 1,503,480 sharesMar 14, 2025: 1,536,411 sharesMar 31, 2025: 1,614,384 sharesApr 15, 2025: 1,217,330 sharesApr 30, 2025: 1,158,175 sharesMay 15, 2025: 1,588,311 sharesMay 30, 2025: 2,179,973 sharesJun 13, 2025: 2,210,776 sharesJun 30, 2025: 2,437,730 sharesJul 15, 2025: 2,268,812 sharesJul 31, 2025: 2,296,444 sharesAug 15, 2025: 2,775,754 sharesAug 29, 2025: 2,683,531 sharesSep 15, 2025: 2,542,188 sharesSep 30, 2025: 2,570,721 sharesOct 15, 2025: 2,575,187 sharesOct 31, 2025: 2,513,754 sharesNov 14, 2025: 2,115,496 sharesNov 28, 2025: 1,774,377 sharesDec 15, 2025: 1,862,331 sharesDec 31, 2025: 1,856,057 sharesJan 15, 2026: 1,897,258 sharesJan 30, 2026: 1,578,528 sharesFeb 13, 2026: 1,591,982 sharesFeb 27, 2026: 1,477,044 sharesMar 13, 2026: 1,813,528 sharesMar 31, 2026: 1,681,671 sharesApr 15, 2026: 1,386,445 sharesApr 30, 2026: 1,277,625 sharesMay 15, 2026: 1,484,758 sharesMay 29, 2026: 1,331,068 sharesJun 15, 2026: 1,367,197 sharesJun 30, 2026: 1,460,297 sharesJul 15, 2026: 1,585,004 sharesJul 31, 2026: 1,479,351 sharesAug 14, 2026: 1,492,413 sharesAug 31, 2026: 1,760,385 sharesSep 15, 2026: 1,834,261 sharesSep 30, 2026: 2,157,523 sharesOct 15, 2026: 2,404,193 sharesOct 30, 2026: 2,423,900 shares
Short interest in KEX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20262.42M+19.7K+0.8%699.5K3.47
Oct 15, 20262.40M+246.7K+11.4%493.2K4.87
Sep 30, 20262.16M+323.3K+17.6%496.9K4.34
Sep 15, 20261.83M+73.9K+4.2%382.5K4.80
Aug 31, 20261.76M+268.0K+18.0%356.2K4.94
Aug 14, 20261.49M+13.1K+0.9%552.0K2.70
Jul 31, 20261.48M−105.7K−6.7%642.6K2.30
Jul 15, 20261.59M+124.7K+8.5%661.9K2.39
Jun 30, 20261.46M+93.1K+6.8%611.1K2.39
Jun 15, 20261.37M+36.1K+2.7%565.5K2.42
May 29, 20261.33M−153.7K−10.4%548.8K2.43
May 15, 20261.48M+207.1K+16.2%656.2K2.26
Apr 30, 20261.28M−108.8K−7.9%766.0K1.67
Apr 15, 20261.39M−295.2K−17.6%648.2K2.14
Mar 31, 20261.68M−131.9K−7.3%811.6K2.07
Mar 13, 20261.81M+336.5K+22.8%809.1K2.24
Feb 27, 20261.48M−114.9K−7.2%466.3K3.17
Feb 13, 20261.59M+13.5K+0.9%711.4K2.24
Jan 30, 20261.58M−318.7K−16.8%1.05M1.50
Jan 15, 20261.90M+41.2K+2.2%876.2K2.17
Dec 31, 20251.86M−6.27K−0.3%578.8K3.21
Dec 15, 20251.86M+88.0K+5.0%711.5K2.62
Nov 28, 20251.77M−341.1K−16.1%645.3K2.75
Nov 14, 20252.12M−398.3K−15.8%807.2K2.62
Oct 31, 20252.51M−61.4K−2.4%1.31M1.92
Oct 15, 20252.58M+4.47K+0.2%828.7K3.11
Sep 30, 20252.57M+28.5K+1.1%1.14M2.26
Sep 15, 20252.54M−141.3K−5.3%1.34M1.90
Aug 29, 20252.68M−92.2K−3.3%577.7K4.65
Aug 15, 20252.78M+479.3K+20.9%872.8K3.18
Jul 31, 20252.30M+27.6K+1.2%799.7K2.87
Jul 15, 20252.27M−168.9K−6.9%434.2K5.23
Jun 30, 20252.44M+227.0K+10.3%622.3K3.92
Jun 13, 20252.21M+30.8K+1.4%428.9K5.15
May 30, 20252.18M+591.7K+37.3%576.0K3.78
May 15, 20251.59M+430.1K+37.1%600.6K2.64
Apr 30, 20251.16M−59.2K−4.9%443.4K2.61
Apr 15, 20251.22M−397.1K−24.6%650.7K1.87
Mar 31, 20251.61M+78.0K+5.1%561.1K2.88
Mar 14, 20251.54M+32.9K+2.2%607.8K2.53
Feb 28, 20251.50M+3.07K+0.2%625.5K2.40
Feb 14, 20251.50M+249.3K+19.9%529.9K2.83
Jan 31, 20251.25M+8.26K+0.7%853.2K1.47
Jan 15, 20251.24M+302.1K+32.1%681.4K1.82
Dec 31, 2024940.7K+340.7K+56.8%774.9K1.21
Dec 13, 2024599.9K−116.8K−16.3%453.0K1.32
Nov 29, 2024716.8K−80.4K−10.1%406.8K1.76
Nov 15, 2024797.1K−85.6K−9.7%445.0K1.79
Oct 31, 2024882.8K−45.8K−4.9%505.6K1.75

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 KEX by settlement date
Settlement dateSharesPriceValue
Aug 28, 20263,040$139.86$425.2K
Jul 2, 20266,491$130.97$850.1K
Jun 30, 20263,219$137.43$442.4K
Jun 22, 2026341$140.64$48.0K
Jun 17, 20261$141.55$141.55
Jun 15, 2026264$143.42$37.9K
Jun 5, 20264,785$142.73$683.0K
May 26, 202692$143.34$13.2K
Apr 15, 202621,689$142.63$3.09M
Apr 13, 202648$140.38$6.74K
Mar 19, 20269,733$125.89$1.23M
Mar 13, 202679,232$124.21$9.84M
Mar 12, 20261,777$126.32$224.5K
Mar 4, 20265,347$133.83$715.6K
Mar 2, 202622,485$129.80$2.92M
Feb 27, 20261,293$129.66$167.7K
Feb 19, 20263$127.80$383.4
Dec 22, 202513,388$110.94$1.49M
Dec 12, 20252$112.09$224.18
Dec 9, 202524$112.08$2.69K
Dec 5, 2025431$111.63$48.1K
Nov 19, 202515$107.49$1.61K
Nov 3, 20253,943$103.48$408.0K
Oct 31, 20258,846$104.33$922.9K
Oct 30, 202544$100.99$4.44K
Oct 29, 20253,752$88.64$332.6K
Oct 14, 20251,700$81.50$138.6K
Sep 30, 20251,174$84.47$99.2K
Sep 22, 20257$84.05$588.35
Aug 26, 202523$97.92$2.25K

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 KEX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 10, 2026155,2280486,90731.9%
Nov 9, 2026130,168309325,46840.0%
Nov 6, 2026114,579943283,12140.5%
Nov 5, 2026144,3761,434527,60127.4%
Nov 4, 2026192,8546,287556,72634.6%
Nov 3, 202666,7260124,15953.7%
Nov 2, 2026123,28545236,35152.2%
Oct 30, 202658,9130176,13033.4%
Oct 29, 2026147,7850401,99136.8%
Oct 28, 2026296,5520444,83966.7%
Oct 27, 2026185,2970299,46661.9%
Oct 26, 202676,5740173,66044.1%
Oct 23, 2026107,4590201,97753.2%
Oct 22, 2026119,3671,024234,37250.9%
Oct 21, 2026147,7014268,24055.1%
Oct 20, 202670,76233124,25257.0%
Oct 19, 202686,33741180,31047.9%
Oct 16, 2026106,23389193,26455.0%
Oct 15, 2026100,4613184,12954.6%
Oct 14, 2026197,4933324,62560.8%
Oct 13, 202697,6446151,40364.5%
Oct 12, 202651,0680104,80448.7%
Oct 9, 202655,48214126,90043.7%
Oct 8, 202697,6051,001125,33677.9%
Oct 7, 202689,18710141,00663.3%
Oct 6, 2026109,3970259,03342.2%
Oct 5, 2026113,30914197,02957.5%
Oct 2, 2026124,5900180,71468.9%
Oct 1, 202697,279800159,29361.1%
Sep 30, 202687,6014136,12964.4%

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 KEX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 19, 2026T1832,38127,162244,5037,45077.3%
Oct 12, 2026T1810,19128,600213,9228,16579.1%
Oct 5, 2026T1681,74626,451291,8675,67970.0%
Sep 28, 2026T1664,34628,488298,4458,49969.0%
Sep 21, 2026T1779,16029,363214,1477,71778.4%
Sep 14, 2026T1532,65023,922254,7546,23967.6%
Sep 7, 2026T1473,69718,888138,6844,47977.4%
Aug 31, 2026T1528,75323,280162,4387,25176.5%
Aug 24, 2026T1409,84518,911218,5304,64665.2%
Aug 17, 2026T1487,10523,434365,5596,19557.1%
Aug 10, 2026T1635,29825,635242,8896,22372.3%
Aug 3, 2026T1842,91328,642594,7027,30158.6%