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Gatx Corp

GATX
Exchange
NYSE
Industry
Transportation Services
SEC CIK
0000040211

In the last 90 days, Gatx Corp insiders filed 0 open-market purchases and 6 sales; 411 institutions reported holding it in 13F filings for Q2 2026, worth $6.42B 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
2.20M
Shares, settlement Oct 30, 2026
Change
+170.7K
+8.4% vs. Oct 15, 2026
Days to cover
9.84
Short interest ÷ average daily volume
Average daily volume
223.6K
Shares, as reported by FINRA
Short interest by settlement date
Oct 31, 2024: 1,433,129 sharesNov 15, 2024: 1,418,150 sharesNov 29, 2024: 1,442,640 sharesDec 13, 2024: 1,594,852 sharesDec 31, 2024: 1,259,141 sharesJan 15, 2025: 1,205,806 sharesJan 31, 2025: 1,078,200 sharesFeb 14, 2025: 1,047,707 sharesFeb 28, 2025: 1,118,510 sharesMar 14, 2025: 1,056,586 sharesMar 31, 2025: 1,073,356 sharesApr 15, 2025: 991,476 sharesApr 30, 2025: 1,004,940 sharesMay 15, 2025: 1,000,448 sharesMay 30, 2025: 1,076,267 sharesJun 13, 2025: 1,245,520 sharesJun 30, 2025: 1,091,955 sharesJul 15, 2025: 1,192,798 sharesJul 31, 2025: 1,110,653 sharesAug 15, 2025: 1,075,046 sharesAug 29, 2025: 1,064,455 sharesSep 15, 2025: 1,197,493 sharesSep 30, 2025: 1,023,918 sharesOct 15, 2025: 1,000,404 sharesOct 31, 2025: 972,814 sharesNov 14, 2025: 908,138 sharesNov 28, 2025: 880,636 sharesDec 15, 2025: 1,068,422 sharesDec 31, 2025: 887,441 sharesJan 15, 2026: 878,933 sharesJan 30, 2026: 799,278 sharesFeb 13, 2026: 867,824 sharesFeb 27, 2026: 851,479 sharesMar 13, 2026: 835,614 sharesMar 31, 2026: 945,018 sharesApr 15, 2026: 920,414 sharesApr 30, 2026: 853,834 sharesMay 15, 2026: 894,437 sharesMay 29, 2026: 970,214 sharesJun 15, 2026: 1,198,883 sharesJun 30, 2026: 1,335,820 sharesJul 15, 2026: 1,609,673 sharesJul 31, 2026: 1,694,094 sharesAug 14, 2026: 1,851,769 sharesAug 31, 2026: 2,049,670 sharesSep 15, 2026: 2,296,499 sharesSep 30, 2026: 2,183,974 sharesOct 15, 2026: 2,028,744 sharesOct 30, 2026: 2,199,424 shares
Short interest in GATX by settlement date
Settlement dateShort interestChangeChange %Avg. daily volumeDays to cover
Oct 30, 20262.20M+170.7K+8.4%223.6K9.84
Oct 15, 20262.03M−155.2K−7.1%223.3K9.08
Sep 30, 20262.18M−112.5K−4.9%304.8K7.17
Sep 15, 20262.30M+246.8K+12.0%187.3K12.26
Aug 31, 20262.05M+197.9K+10.7%185.2K11.06
Aug 14, 20261.85M+157.7K+9.3%182.4K10.15
Jul 31, 20261.69M+84.4K+5.2%246.1K6.88
Jul 15, 20261.61M+273.9K+20.5%221.5K7.27
Jun 30, 20261.34M+136.9K+11.4%317.3K4.21
Jun 15, 20261.20M+228.7K+23.6%242.6K4.94
May 29, 2026970.2K+75.8K+8.5%184.2K5.27
May 15, 2026894.4K+40.6K+4.8%253.6K3.53
Apr 30, 2026853.8K−66.6K−7.2%186.0K4.59
Apr 15, 2026920.4K−24.6K−2.6%225.4K4.08
Mar 31, 2026945.0K+109.4K+13.1%205.5K4.60
Mar 13, 2026835.6K−15.9K−1.9%175.6K4.76
Feb 27, 2026851.5K−16.3K−1.9%276.6K3.08
Feb 13, 2026867.8K+68.5K+8.6%171.7K5.06
Jan 30, 2026799.3K−79.7K−9.1%240.0K3.33
Jan 15, 2026878.9K−8.51K−1.0%132.8K6.62
Dec 31, 2025887.4K−181.0K−16.9%161.8K5.48
Dec 15, 20251.07M+187.8K+21.3%158.4K6.74
Nov 28, 2025880.6K−27.5K−3.0%169.2K5.21
Nov 14, 2025908.1K−64.7K−6.7%197.2K4.60
Oct 31, 2025972.8K−27.6K−2.8%197.9K4.92
Oct 15, 20251.00M−23.5K−2.3%131.8K7.59
Sep 30, 20251.02M−173.6K−14.5%249.8K4.10
Sep 15, 20251.20M+133.0K+12.5%170.4K7.03
Aug 29, 20251.06M−10.6K−1.0%165.2K6.44
Aug 15, 20251.08M−35.6K−3.2%157.7K6.82
Jul 31, 20251.11M−82.1K−6.9%195.7K5.68
Jul 15, 20251.19M+100.8K+9.2%142.8K8.35
Jun 30, 20251.09M−153.6K−12.3%190.9K5.72
Jun 13, 20251.25M+169.3K+15.7%188.0K6.63
May 30, 20251.08M+75.8K+7.6%249.5K4.31
May 15, 20251.00M−4.49K−0.5%160.8K6.22
Apr 30, 20251.00M+13.5K+1.4%233.7K4.30
Apr 15, 2025991.5K−81.9K−7.6%242.8K4.08
Mar 31, 20251.07M+16.8K+1.6%152.7K7.03
Mar 14, 20251.06M−61.9K−5.5%160.8K6.57
Feb 28, 20251.12M+70.8K+6.8%117.6K9.51
Feb 14, 20251.05M−30.5K−2.8%123.7K8.47
Jan 31, 20251.08M−127.6K−10.6%157.3K6.85
Jan 15, 20251.21M−53.3K−4.2%147.7K8.16
Dec 31, 20241.26M−335.7K−21.1%182.6K6.90
Dec 13, 20241.59M+152.2K+10.6%192.6K8.28
Nov 29, 20241.44M+24.5K+1.7%191.0K7.55
Nov 15, 20241.42M−15.0K−1.1%168.1K8.44
Oct 31, 20241.43M+73.9K+5.4%144.5K9.92

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 GATX by settlement date
Settlement dateSharesPriceValue
Oct 13, 2026918$166.16$152.5K
Oct 8, 20263$163.34$490.02
Oct 7, 2026160$170.88$27.3K
Oct 6, 20269,887$172.27$1.70M
Oct 2, 202611,785$168.88$1.99M
Sep 30, 202670$175.86$12.3K
Sep 29, 202631$181.26$5.62K
Sep 28, 202631$183.73$5.70K
Sep 24, 20262,737$185.70$508.3K
Sep 23, 20265,916$183.01$1.08M
Sep 22, 20261,088$180.40$196.3K
Sep 18, 20268,611$180.29$1.55M
Sep 17, 20261$177.63$177.63
Sep 16, 2026904$178.34$161.2K
Sep 15, 202611$176.10$1.94K
Sep 14, 20261,136$178.53$202.8K
Sep 11, 20266,592$176.86$1.17M
Sep 10, 202670$177.08$12.4K
Sep 8, 20261$178.11$178.11
Sep 3, 20269,073$175.78$1.59M
Sep 2, 20264$173.54$694.16
Sep 1, 202660$174.93$10.5K
Aug 31, 2026138$177.60$24.5K
Aug 28, 2026190$178.44$33.9K
Aug 27, 2026308$178.49$55.0K
Aug 26, 2026413$179.25$74.0K
Aug 24, 20261$176.94$176.94
Aug 21, 20264$176.70$706.8
Aug 20, 202654$176.16$9.51K
Aug 18, 202618$180.64$3.25K

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 GATX by trade date
Trade dateShort volumeShort exemptOff-exchange volumeShort volume ratio
Nov 11, 202634,5532044,88377.0%
Nov 10, 202627,231034,26379.5%
Nov 9, 202647,81815664,78873.8%
Nov 6, 202643,081057,80074.5%
Nov 5, 202647,818066,29472.1%
Nov 4, 202660,62925101,79859.6%
Nov 3, 202655,64862889,92361.9%
Nov 2, 202653,19313888,14860.3%
Oct 30, 202659,6932,800103,43757.7%
Oct 29, 2026109,3320145,55175.1%
Oct 28, 202654,681084,03065.1%
Oct 27, 202640,107062,75563.9%
Oct 26, 202623,0751338,11260.5%
Oct 23, 202631,9673744,44671.9%
Oct 22, 202637,557059,97662.6%
Oct 21, 202631,2942374,52342.0%
Oct 20, 202638,980069,77155.9%
Oct 19, 202623,054035,67864.6%
Oct 16, 202626,3921,17349,19453.6%
Oct 15, 202637,77419659,76063.2%
Oct 14, 202634,361050,07568.6%
Oct 13, 202626,4476544,10360.0%
Oct 12, 202636,425049,46273.6%
Oct 9, 202631,773042,99773.9%
Oct 8, 202653,017180,10066.2%
Oct 7, 202644,935063,74470.5%
Oct 6, 202620,5891232,92562.5%
Oct 5, 202644,99683854,23483.0%
Oct 2, 202662,181098,25163.3%
Oct 1, 202670,2520178,85939.3%

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 GATX
Week ofTierATS sharesATS tradesOther OTC sharesOther OTC tradesATS share
Oct 5, 2026T2207,78211,872129,8894,17961.5%
Sep 28, 2026T2444,93016,137153,3204,67374.4%
Sep 21, 2026T2343,35315,455166,0513,63767.4%
Sep 14, 2026T2368,42820,537216,5864,07863.0%
Sep 7, 2026T2185,73312,41991,2592,91767.1%
Aug 31, 2026T2230,24514,62495,5823,50570.7%
Aug 24, 2026T2234,16114,58295,0633,01871.1%
Aug 17, 2026T2353,32415,21299,4973,14678.0%
Aug 10, 2026T2207,87613,206111,5992,60365.1%
Aug 3, 2026T2293,65115,057106,2953,53773.4%
Jul 27, 2026T2481,15118,383151,8613,88476.0%
Jul 20, 2026T2240,65912,42291,3782,93772.5%