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HowShorted

How shorted is TransDigm Group Incorporated? TDG

#2,958most shorted US stockof 3,805 ranked stocks, more shorted than 22%

1.93%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.30
5 reports (~10 weeks)
−0.12
days to cover
3.17
Aggregate net short position time series for TransDigm Group Incorporated

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 TransDigm Group Incorporated 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
4 Aug 20261.74% 31 Jul 20261.51% 14 Aug 2026−0.23
5 May 20261.80% 30 Apr 20261.75% 15 May 2026−0.05
14 Apr 20261.86% 31 Mar 20261.84% 15 Apr 2026−0.02
3 Feb 20262.22% 30 Jan 20262.00% 13 Feb 2026−0.22
12 Nov 20252.03% 31 Oct 20252.11% 14 Nov 2025+0.08
5 Aug 20251.99% 31 Jul 20251.99% 15 Aug 20250.00
6 May 20252.35% 30 Apr 20252.27% 15 May 2025−0.08
4 Feb 20251.98% 31 Jan 20251.97% 14 Feb 2025−0.01

Fails to deliver

The SEC's fails-to-deliver figure for TDG: 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.

Last balance on file
17
11 Sep 2026
Highest in window
32,609
3 Feb 2026
Days with a balance
61
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for TransDigm Group Incorporated 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 33K shares.

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Sector: Industrials

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20261.93%+0.30
31 Aug 20261.63%+0.12
14 Aug 20261.51%−0.23
31 Jul 20261.74%−0.18
15 Jul 20261.92%−0.13
30 Jun 20262.05%+0.03
15 Jun 20262.02%+0.15
29 May 20261.87%+0.12
15 May 20261.75%−0.05
30 Apr 20261.80%−0.04
15 Apr 20261.84%−0.02
31 Mar 20261.86%+0.18
13 Mar 20261.68%−0.05
27 Feb 20261.73%−0.27
13 Feb 20262.00%−0.22
30 Jan 20262.22%+0.08
15 Jan 20262.14%+0.16
31 Dec 20251.98%−0.15
15 Dec 20252.13%−0.16
28 Nov 20252.29%+0.18
14 Nov 20252.11%+0.08
31 Oct 20252.03%+0.11
15 Oct 20251.92%−0.08
30 Sep 20252.00%+0.13
15 Sep 20251.87%−0.04
29 Aug 20251.91%−0.08
15 Aug 20251.99%0.00
31 Jul 20251.99%−0.21
15 Jul 20252.20%+0.06
30 Jun 20252.14%+0.15
13 Jun 20251.99%−0.04
30 May 20252.03%−0.24
15 May 20252.27%−0.08
30 Apr 20252.35%+0.21
15 Apr 20252.14%+0.09
31 Mar 20252.05%−0.13
14 Mar 20252.18%+0.35
28 Feb 20251.83%−0.14
14 Feb 20251.97%−0.01
31 Jan 20251.98%−0.01
15 Jan 20251.99%−0.12
31 Dec 20242.11%+0.54
13 Dec 20241.57%+0.05
29 Nov 20241.52%−0.03
15 Nov 20241.55%−0.03
31 Oct 20241.58%+0.13
15 Oct 20241.45%+0.08
30 Sep 20241.37%+0.06
13 Sep 20241.31%−0.04
30 Aug 20241.35%−0.21
15 Aug 20241.56%+0.16
31 Jul 20241.40%+0.08
15 Jul 20241.32%−0.26
28 Jun 20241.58%+0.11
14 Jun 20241.47%−0.07
31 May 20241.54%−0.33
15 May 20241.87%0.00
30 Apr 20241.87%+0.02
15 Apr 20241.85%+0.02
28 Mar 20241.83%−0.18
15 Mar 20242.01%−0.09
29 Feb 20242.10%+0.01
15 Feb 20242.09%+0.05
31 Jan 20242.04%+0.02
12 Jan 20242.02%+0.09
29 Dec 20231.93%−0.16
15 Dec 20232.09%0.00
30 Nov 20232.09%−0.13
15 Nov 20232.22%+0.13
31 Oct 20232.09%−0.12
13 Oct 20232.21%+0.45
29 Sep 20231.76%+0.01
15 Sep 20231.75%+0.03
31 Aug 20231.72%−0.15
15 Aug 20231.87%−0.02
31 Jul 20231.89%−0.03
14 Jul 20231.92%−0.23
30 Jun 20232.15%+0.20
15 Jun 20231.95%−0.02
31 May 20231.97%−0.22
15 May 20232.19%+0.09
28 Apr 20232.10%−0.08
14 Apr 20232.18%+0.07
31 Mar 20232.11%−0.04
15 Mar 20232.15%−0.07
28 Feb 20232.22%−0.02
15 Feb 20232.24%−0.06
31 Jan 20232.30%−0.10
13 Jan 20232.40%−0.04
30 Dec 20222.44%−0.15
15 Dec 20222.59%−0.16
30 Nov 20222.75%−0.29
15 Nov 20223.04%−0.28
31 Oct 20223.32%−0.12
14 Oct 20223.44%+0.61
30 Sep 20222.83%+0.71
15 Sep 20222.12%+0.19
31 Aug 20221.93%−0.01
15 Aug 20221.94%+0.13
29 Jul 20221.81%−0.13
15 Jul 20221.94%−0.04
30 Jun 20221.98%−0.08
15 Jun 20222.06%−0.06
31 May 20222.12%+0.22
13 May 20221.90%+0.21
29 Apr 20221.69%−0.36
14 Apr 20222.05%−0.36
31 Mar 20222.41%+0.48
15 Mar 20221.93%+0.04
28 Feb 20221.89%+0.03
15 Feb 20221.86%+0.10
31 Jan 20221.76%−2.88
30 Nov 20214.64%−0.04
15 Nov 20214.68%+0.37
29 Oct 20214.31%+0.28
15 Oct 20214.03%+0.14
30 Sep 20213.89%+0.10
15 Sep 20213.79%+0.17
31 Aug 20213.62%−0.21
13 Aug 20213.83%+0.20
30 Jul 20213.63%−0.03
15 Jul 20213.66%−0.31
30 Jun 20213.97%−0.14
15 Jun 20214.11%+0.31
28 May 20213.80%+0.05
14 May 20213.75%−0.04
30 Apr 20213.79%+0.27
15 Apr 20213.52%−0.16
31 Mar 20213.68%+0.04
15 Mar 20213.64%+0.22
26 Feb 20213.42%−0.06
12 Feb 20213.48%−0.16
29 Jan 20213.64%−0.12
15 Jan 20213.76%+0.05
31 Dec 20203.71%−0.12
15 Dec 20203.83%−0.18
30 Nov 20204.01%−0.30
13 Nov 20204.31%−0.17
30 Oct 20204.48%+0.12
15 Oct 20204.36%−0.79
30 Sep 20205.15%+0.13
15 Sep 20205.02%+0.11
31 Aug 20204.91%−0.02
14 Aug 20204.93%−0.05
31 Jul 20204.98%0.00
15 Jul 20204.98%−1.01
30 Jun 20205.99%+0.01
15 Jun 20205.98%−0.07
29 May 20206.05%−0.37
15 May 20206.42%−0.02
30 Apr 20206.44%−0.17
15 Apr 20206.61%+0.50
31 Mar 20206.11%+1.00
13 Mar 20205.11%+1.32
28 Feb 20203.79%−0.09
14 Feb 20203.88%−0.48
31 Jan 20204.36%−0.47
15 Jan 20204.83%−0.50
31 Dec 20195.33%+0.27
13 Dec 20195.06%−0.19
29 Nov 20195.25%+0.09
15 Nov 20195.16%+0.11
31 Oct 20195.05%+0.35
15 Oct 20194.70%−0.06
30 Sep 20194.76%+0.04
13 Sep 20194.72%+0.08
30 Aug 20194.64%−0.60
15 Aug 20195.24%+0.16
31 Jul 20195.08%+0.24
15 Jul 20194.84%+0.11
28 Jun 20194.73%−0.13
14 Jun 20194.86%+0.30
31 May 20194.56%+0.21
15 May 20194.35%+0.16
30 Apr 20194.19%−0.10
15 Apr 20194.29%−0.48
29 Mar 20194.77%+0.53
15 Mar 20194.24%+0.20
28 Feb 20194.04%−0.37
15 Feb 20194.41%−0.29
31 Jan 20194.70%−0.26
15 Jan 20194.96%−0.37
31 Dec 20185.33%+0.04
14 Dec 20185.29%+0.15
30 Nov 20185.14%+0.10
15 Nov 20185.04%−0.62
31 Oct 20185.66%+1.00
15 Oct 20184.66%−0.25
28 Sep 20184.91%−1.00
14 Sep 20185.91%+0.43
31 Aug 20185.48%−0.16
15 Aug 20185.64%−0.99
31 Jul 20186.63%−0.74
13 Jul 20187.37%−0.68
29 Jun 20188.05%+0.10
15 Jun 20187.95%−0.50
31 May 20188.45%+0.74
15 May 20187.71%−0.81
30 Apr 20188.52%−0.57
13 Apr 20189.09%−0.16
29 Mar 20189.25%+0.67
15 Mar 20188.58%−0.60
28 Feb 20189.18%−1.16
15 Feb 201810.34%−0.59
31 Jan 201810.93%−0.24
12 Jan 201811.17%−0.32
29 Dec 201711.49%–

Newest first. Scroll inside the table for earlier dates, back to 29 Dec 2017.

Frequently asked questions

How shorted is TransDigm Group Incorporated right now?
1.93% of TransDigm Group Incorporated's (TDG) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 2,958th 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 TDG'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 TDG's days to cover?
3.17 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.