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HowShorted

How shorted is GATX Corporation? GATX

#1,260most shorted US stockof 3,805 ranked stocks, more shorted than 66%

6.51%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.70
5 reports (~10 weeks)
+2.73
days to cover
12.26
Aggregate net short position time series for GATX Corporation

Markers along the chart's base: ▲ results announced (an 8-K reporting results was filed) ▲ quarterly or annual report filed. Dates are SEC filing dates; hover a point to see events since the previous settlement.

Days to cover

FINRA's own figure: reported shares short divided by the stock's average daily trading volume, published alongside each settlement. It expresses the short position in days of typical trading rather than as a percentage of the company; the two can move differently.

Aggregate net short position time series for GATX Corporation days to cover

Short interest around results

For each results announcement (an 8-K reporting results, by its SEC filing date), the FINRA settlement before it and the first one after. Settlements fall twice a month, so the two figures can sit up to a month apart and much else changes in between: this shows what was reported, not why.

Reported short interest before and after each results announcement
Results filedSettlement beforeSettlement afterChange
30 Jul 20264.56% 15 Jul 20264.80% 31 Jul 2026+0.24
7 May 20262.41% 30 Apr 20262.52% 15 May 2026+0.11
19 Feb 20262.44% 13 Feb 20262.40% 27 Feb 2026−0.04
21 Oct 20252.80% 15 Oct 20252.72% 31 Oct 2025−0.08
29 Jul 20253.35% 15 Jul 20253.12% 31 Jul 2025−0.23
23 Apr 20252.78% 15 Apr 20252.81% 30 Apr 2025+0.03
23 Jan 20253.40% 15 Jan 20253.03% 31 Jan 2025−0.37
22 Oct 20243.83% 15 Oct 20244.04% 31 Oct 2024+0.21

Fails to deliver

The SEC's fails-to-deliver figure for GATX: the aggregate net balance of shares that failed to be delivered at each settlement date, published by the SEC twice a month and shown here verbatim for the trailing window. A balance is not a daily flow, and a fail has many ordinary causes; the SEC says it cannot guarantee the accuracy of the data. See what fails to deliver are and the largest balances today.

Latest balance
1,136
14 Sep 2026
Highest in window
14,227
9 Apr 2026
Days with a balance
142
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for GATX Corporation fails to deliver

Source: U.S. Securities and Exchange Commission, fails-to-deliver data (public domain). Only settlement days with a positive balance appear; the largest balance in the window was 14K shares.

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Sector: Industrials

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20266.51%+0.70
31 Aug 20265.81%+0.56
14 Aug 20265.25%+0.45
31 Jul 20264.80%+0.24
15 Jul 20264.56%+0.78
30 Jun 20263.78%+0.40
15 Jun 20263.38%+0.65
29 May 20262.73%+0.21
15 May 20262.52%+0.11
30 Apr 20262.41%−0.18
15 Apr 20262.59%−0.07
31 Mar 20262.66%+0.31
13 Mar 20262.35%−0.05
27 Feb 20262.40%−0.04
13 Feb 20262.44%+0.20
30 Jan 20262.24%−0.22
15 Jan 20262.46%−0.03
31 Dec 20252.49%−0.50
15 Dec 20252.99%+0.52
28 Nov 20252.47%−0.07
14 Nov 20252.54%−0.18
31 Oct 20252.72%−0.08
15 Oct 20252.80%−0.07
30 Sep 20252.87%−0.49
15 Sep 20253.36%+0.37
29 Aug 20252.99%−0.03
15 Aug 20253.02%−0.10
31 Jul 20253.12%−0.23
15 Jul 20253.35%+0.28
30 Jun 20253.07%−0.42
13 Jun 20253.49%+0.48
30 May 20253.01%+0.21
15 May 20252.80%−0.01
30 Apr 20252.81%+0.03
15 Apr 20252.78%−0.23
31 Mar 20253.01%+0.04
14 Mar 20252.97%−0.17
28 Feb 20253.14%+0.20
14 Feb 20252.94%−0.09
31 Jan 20253.03%−0.37
15 Jan 20253.40%−0.15
31 Dec 20243.55%−0.94
13 Dec 20244.49%+0.43
29 Nov 20244.06%+0.07
15 Nov 20243.99%−0.05
31 Oct 20244.04%+0.21
15 Oct 20243.83%+0.34
30 Sep 20243.49%−0.11
13 Sep 20243.60%+0.07
30 Aug 20243.53%−0.05
15 Aug 20243.58%−0.15
31 Jul 20243.73%−0.02
15 Jul 20243.75%+0.34
28 Jun 20243.41%−0.26
14 Jun 20243.67%+0.08
31 May 20243.59%+0.37
15 May 20243.22%−0.32
30 Apr 20243.54%+0.25
15 Apr 20243.29%+0.10
28 Mar 20243.19%−0.27
15 Mar 20243.46%−0.03
29 Feb 20243.49%+0.27
15 Feb 20243.22%−0.51
31 Jan 20243.73%−0.21
12 Jan 20243.94%−0.01
29 Dec 20233.95%−0.27
15 Dec 20234.22%+0.16
30 Nov 20234.06%−0.21
15 Nov 20234.27%+0.05
31 Oct 20234.22%−0.12
13 Oct 20234.34%0.00
29 Sep 20234.34%−0.27
15 Sep 20234.61%+0.31
31 Aug 20234.30%+0.01
15 Aug 20234.29%+0.02
31 Jul 20234.27%−0.12
14 Jul 20234.39%−0.04
30 Jun 20234.43%−0.93
15 Jun 20235.36%+0.50
31 May 20234.86%0.00
15 May 20234.86%−0.26
28 Apr 20235.12%+0.42
14 Apr 20234.70%+0.03
31 Mar 20234.67%+0.04
15 Mar 20234.63%−0.68
28 Feb 20235.31%+0.18
15 Feb 20235.13%−0.63
31 Jan 20235.76%−0.13
13 Jan 20235.89%−0.23
30 Dec 20226.12%−0.52
15 Dec 20226.64%+0.16
30 Nov 20226.48%−0.16
15 Nov 20226.64%−0.75
31 Oct 20227.39%−0.25
14 Oct 20227.64%+0.68
30 Sep 20226.96%+0.29
15 Sep 20226.67%+0.01
31 Aug 20226.66%−0.26
15 Aug 20226.92%−0.27
29 Jul 20227.19%−0.21
15 Jul 20227.40%−0.51
30 Jun 20227.91%−0.30
15 Jun 20228.21%+0.07
31 May 20228.14%+0.24
13 May 20227.90%+0.25
29 Apr 20227.65%+0.41
14 Apr 20227.24%−0.27
31 Mar 20227.51%−0.41
15 Mar 20227.92%−0.21
28 Feb 20228.13%−0.11
15 Feb 20228.24%−0.51
31 Jan 20228.75%+0.89
14 Jan 20227.86%−0.14
31 Dec 20218.00%−0.63
15 Dec 20218.63%+0.08
30 Nov 20218.55%−0.12
15 Nov 20218.67%−0.08
29 Oct 20218.75%−0.20
15 Oct 20218.95%−0.16
30 Sep 20219.11%−0.69
15 Sep 20219.80%−0.25
31 Aug 202110.05%−0.19
13 Aug 202110.24%+0.11
30 Jul 202110.13%−0.66
15 Jul 202110.79%−0.35
30 Jun 202111.14%−0.70
15 Jun 202111.84%−0.11
28 May 202111.95%−0.21
14 May 202112.16%+0.18
30 Apr 202111.98%+0.40
15 Apr 202111.58%−0.08
31 Mar 202111.66%+0.24
15 Mar 202111.42%−0.09
26 Feb 202111.51%+0.30
12 Feb 202111.21%−2.41
29 Jan 202113.62%−0.88
15 Jan 202114.50%−0.15
31 Dec 202014.65%−1.96
15 Dec 202016.61%−0.35
30 Nov 202016.96%−0.55
13 Nov 202017.51%−0.64
30 Oct 202018.15%−0.29
15 Oct 202018.44%−0.54
30 Sep 202018.98%−0.43
15 Sep 202019.41%+0.08
31 Aug 202019.33%−0.17
14 Aug 202019.50%+0.12
31 Jul 202019.38%+0.26
15 Jul 202019.12%+0.86
30 Jun 202018.26%−0.30
15 Jun 202018.56%+0.11
29 May 202018.45%+0.10
15 May 202018.35%+0.98
30 Apr 202017.37%−0.49
15 Apr 202017.86%+0.26
31 Mar 202017.60%−0.95
13 Mar 202018.55%+0.32
28 Feb 202018.23%−0.28
14 Feb 202018.51%−0.19
31 Jan 202018.70%+2.08
15 Jan 202016.62%+0.36
31 Dec 201916.26%−0.93
13 Dec 201917.19%+0.46
29 Nov 201916.73%−0.13
15 Nov 201916.86%−0.05
31 Oct 201916.91%−0.21
15 Oct 201917.12%–

Newest first. Scroll inside the table for earlier dates, back to 15 Oct 2019.

Frequently asked questions

How shorted is GATX Corporation right now?
6.51% of GATX Corporation's (GATX) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 1,260th most shorted US stock, out of 3,805 we rank.
What does this number include?
FINRA member firms must report their short positions in all US equities twice a month; FINRA consolidates them per security. We divide that official share count by the company's shares outstanding from its SEC filings. This is the regulatory figure, not a daily estimate.
Why does it only update twice a month?
US short interest is reported for settlement on the 15th and the last business day of each month, and FINRA publishes the consolidated figures about nine business days later. That cadence is set by regulation; no daily official figure exists.
Is this GATX's short float?
No. This is short interest as a percentage of shares outstanding, the count in the company's SEC filings. "Short float" divides the same FINRA short count by the public float, which excludes closely held shares, so it comes out higher for the same company. We publish no float estimates: the float is not a regulatory figure.
What is GATX's days to cover?
12.26 days for settlement date 15 Sep 2026: FINRA's own short interest ratio, the reported shares short divided by average daily trading volume. It is published in the same FINRA file and shown verbatim; we hold no volume data ourselves.
Which funds are short?
US public short interest is aggregate-only: individual short sellers are not named. Only some EU markets publish named positions.