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HowShorted

How shorted is T-Mobile US, Inc.? TMUS

#3,046most shorted US stockof 3,805 ranked stocks, more shorted than 19%

1.68%
of shares outstanding reported short · settlement date 15 Sep 2026
vs previous report
+0.09
5 reports (~10 weeks)
−0.17
days to cover
4.57
Aggregate net short position time series for T-Mobile US, Inc.

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 T-Mobile US, Inc. 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
23 Jul 20262.08% 15 Jul 20261.69% 31 Jul 2026−0.39
28 Apr 20261.68% 15 Apr 20261.70% 30 Apr 2026+0.02
11 Feb 20261.18% 30 Jan 20261.27% 13 Feb 2026+0.09
23 Oct 20250.96% 15 Oct 20251.14% 31 Oct 2025+0.18
23 Jul 20251.21% 15 Jul 20251.07% 31 Jul 2025−0.14
24 Apr 20251.13% 15 Apr 20251.06% 30 Apr 2025−0.07
29 Jan 20251.31% 15 Jan 20251.19% 31 Jan 2025−0.12
23 Oct 20241.22% 15 Oct 20241.19% 31 Oct 2024−0.03

Fails to deliver

The SEC's fails-to-deliver figure for TMUS: 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
204
8 Sep 2026
Highest in window
218,172
10 Jun 2026
Days with a balance
78
Window
16 Sep 2025 to 14 Sep 2026
Aggregate net short position time series for T-Mobile US, Inc. 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 218K shares.

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Sector: Media & telecom

History

Full reported short interest history
Settlement dateShort %Change
15 Sep 20261.68%+0.09
31 Aug 20261.59%+0.01
14 Aug 20261.58%−0.11
31 Jul 20261.69%−0.39
15 Jul 20262.08%+0.23
30 Jun 20261.85%−0.32
15 Jun 20262.17%+0.33
29 May 20261.84%+0.11
15 May 20261.73%+0.03
30 Apr 20261.70%+0.02
15 Apr 20261.68%−0.26
31 Mar 20261.94%+0.85
13 Mar 20261.09%−0.12
27 Feb 20261.21%−0.06
13 Feb 20261.27%+0.09
30 Jan 20261.18%−0.17
15 Jan 20261.35%−0.04
31 Dec 20251.39%−0.01
15 Dec 20251.40%+0.05
28 Nov 20251.35%+0.34
14 Nov 20251.01%−0.13
31 Oct 20251.14%+0.18
15 Oct 20250.96%−0.22
30 Sep 20251.18%+0.07
15 Sep 20251.11%−0.05
29 Aug 20251.16%+0.12
15 Aug 20251.04%−0.03
31 Jul 20251.07%−0.14
15 Jul 20251.21%−0.22
30 Jun 20251.43%+0.15
13 Jun 20251.28%−0.02
30 May 20251.30%+0.08
15 May 20251.22%+0.16
30 Apr 20251.06%−0.07
15 Apr 20251.13%−0.03
31 Mar 20251.16%−0.16
14 Mar 20251.32%+0.11
28 Feb 20251.21%−0.12
14 Feb 20251.33%+0.14
31 Jan 20251.19%−0.12
15 Jan 20251.31%+0.06
31 Dec 20241.25%0.00
13 Dec 20241.25%−0.05
29 Nov 20241.30%+0.08
15 Nov 20241.22%+0.03
31 Oct 20241.19%−0.03
15 Oct 20241.22%+0.03
30 Sep 20241.19%−0.08
13 Sep 20241.27%−0.22
30 Aug 20241.49%+0.06
15 Aug 20241.43%+0.06
31 Jul 20241.37%−0.26
15 Jul 20241.63%−0.04
28 Jun 20241.67%−0.51
14 Jun 20242.18%+0.02
31 May 20242.16%+0.16
15 May 20242.00%−0.07
30 Apr 20242.07%+0.12
15 Apr 20241.95%−0.08
28 Mar 20242.03%−0.05
15 Mar 20242.08%−0.18
29 Feb 20242.26%−0.02
15 Feb 20242.28%−0.06
31 Jan 20242.34%+0.16
12 Jan 20242.18%+0.06
29 Dec 20232.12%−0.26
15 Dec 20232.38%+0.21
30 Nov 20232.17%−0.19
15 Nov 20232.36%+0.13
31 Oct 20232.23%+0.01
13 Oct 20232.22%+0.06
29 Sep 20232.16%−0.20
15 Sep 20232.36%+0.14
31 Aug 20232.22%+0.25
15 Aug 20231.97%+0.06
31 Jul 20231.91%−0.09
14 Jul 20232.00%−0.03
30 Jun 20232.03%−0.35
15 Jun 20232.38%−0.05
31 May 20232.43%+0.03
15 May 20232.40%+0.06
28 Apr 20232.34%−0.23
14 Apr 20232.57%−0.07
31 Mar 20232.64%+0.79
15 Mar 20231.85%+0.20
28 Feb 20231.65%+0.16
15 Feb 20231.49%+0.22
31 Jan 20231.27%−0.12
13 Jan 20231.39%−0.02
30 Dec 20221.41%−0.03
15 Dec 20221.44%+0.23
30 Nov 20221.21%−0.15
15 Nov 20221.36%+0.04
31 Oct 20221.32%+0.05
14 Oct 20221.27%−0.03
30 Sep 20221.30%+0.13
15 Sep 20221.17%−0.03
31 Aug 20221.20%+0.04
15 Aug 20221.16%+0.06
29 Jul 20221.10%−0.09
15 Jul 20221.19%−0.08
30 Jun 20221.27%−0.04
15 Jun 20221.31%+0.02
31 May 20221.29%−0.06
13 May 20221.35%+0.04
29 Apr 20221.31%−0.34
14 Apr 20221.65%+0.23
31 Mar 20221.42%+0.23
15 Mar 20221.19%+0.11
28 Feb 20221.08%−0.09
15 Feb 20221.17%−0.05
31 Jan 20221.22%+0.13
14 Jan 20221.09%+0.02
31 Dec 20211.07%−0.01
15 Dec 20211.08%−0.14
30 Nov 20211.22%+0.27
15 Nov 20210.95%+0.01
29 Oct 20210.94%−0.29
15 Oct 20211.23%−0.06
30 Sep 20211.29%−0.46
15 Sep 20211.75%+0.97
31 Aug 20210.78%−0.18
13 Aug 20210.96%+0.13
30 Jul 20210.83%−0.09
15 Jul 20210.92%−0.05
30 Jun 20210.97%−0.11
15 Jun 20211.08%−0.06
28 May 20211.14%+0.18
14 May 20210.96%−0.03
30 Apr 20210.99%−0.28
15 Apr 20211.27%+0.12
31 Mar 20211.15%−0.06
15 Mar 20211.21%+0.15
26 Feb 20211.06%−0.07
12 Feb 20211.13%+0.08
29 Jan 20211.05%+0.09
15 Jan 20210.96%+0.01
31 Dec 20200.95%+0.09
15 Dec 20200.86%+0.10
30 Nov 20200.76%−0.11
13 Nov 20200.87%−0.11
30 Oct 20200.98%−0.31
15 Oct 20201.29%+0.07
30 Sep 20201.22%+0.10
15 Sep 20201.12%+0.05
31 Aug 20201.07%−0.09
14 Aug 20201.16%−0.37
31 Jul 20201.53%+0.51
15 Jul 20201.02%−0.86
30 Jun 20201.88%+0.67
15 Jun 20201.21%−0.14
29 May 20201.35%+0.03
15 May 20201.32%+0.06
30 Apr 20201.26%−0.50
15 Apr 20201.76%−0.26
31 Mar 20202.02%+0.02
13 Mar 20202.00%+0.15
28 Feb 20201.85%+0.44
14 Feb 20201.41%+0.55
31 Jan 20200.86%−0.27
15 Jan 20201.13%−0.26
31 Dec 20191.39%+0.36
13 Dec 20191.03%−0.17
29 Nov 20191.20%+0.08
15 Nov 20191.12%−0.26
31 Oct 20191.38%−0.02
15 Oct 20191.40%−0.24
30 Sep 20191.64%+0.34
13 Sep 20191.30%−0.31
30 Aug 20191.61%+0.18
15 Aug 20191.43%−0.16
31 Jul 20191.59%+0.26
15 Jul 20191.33%+0.13
28 Jun 20191.20%−0.07
14 Jun 20191.27%−0.22
31 May 20191.49%+0.55
15 May 20190.94%+0.15
30 Apr 20190.79%−0.14
15 Apr 20190.93%−0.03
29 Mar 20190.96%−0.03
15 Mar 20190.99%−0.15
28 Feb 20191.14%−0.11
15 Feb 20191.25%−0.11
31 Jan 20191.36%+0.10
15 Jan 20191.26%+0.19
31 Dec 20181.07%+0.04
14 Dec 20181.03%−0.05
30 Nov 20181.08%+0.05
15 Nov 20181.03%+0.07
31 Oct 20180.96%−0.27
15 Oct 20181.23%−0.19
28 Sep 20181.42%+0.01
14 Sep 20181.41%+0.04
31 Aug 20181.37%−0.13
15 Aug 20181.50%+0.04
31 Jul 20181.46%0.00
13 Jul 20181.46%−0.09
29 Jun 20181.55%−0.04
15 Jun 20181.59%+0.17
31 May 20181.42%−0.07
15 May 20181.49%+0.31
30 Apr 20181.18%+0.15
13 Apr 20181.03%−0.19
29 Mar 20181.22%+0.23
15 Mar 20180.99%+0.05
28 Feb 20180.94%+0.04
15 Feb 20180.90%−0.09
31 Jan 20180.99%−0.04
12 Jan 20181.03%+0.05
29 Dec 20170.98%–

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

Frequently asked questions

How shorted is T-Mobile US, Inc. right now?
1.68% of T-Mobile US, Inc.'s (TMUS) shares outstanding were reported short for settlement date 15 Sep 2026, per FINRA's consolidated short interest report. That makes it the 3,046th 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 TMUS'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 TMUS's days to cover?
4.57 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.