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T-Mobile US (TMUS) Short Interest Ratio & Short Volume

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$165.35 -0.31 (-0.19%)
Closing price 04:00 PM Eastern
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$165.35 0.00 (0.00%)
As of 07:57 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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T-Mobile US Short Interest Overview

As of September 15, 2026, T-Mobile US (TMUS) had a short interest of 18.07 million shares sold short, representing 1.69% of the public float. This marks a 5.72% increase in short interest since the prior report. The short interest ratio (days to cover) is 4.6, meaning it would take 4.6 days of the average trading volume of 4.64 million shares to cover all short positions.

Current Short Interest
18,071,400 shares
Previous Short Interest
17,093,779 shares
Change Vs. Previous Month
5.72%
Dollar Volume Sold Short
$3.26 billion
Short Interest Ratio
4.6 Days to Cover
Last Record Date
September 15, 2026
Outstanding Shares
1,072,670,000 shares
Short Percent of Float
1.69%
Today's Trading Volume
4,974,331 shares
Average Trading Volume
4,636,717 shares
Today's Volume Vs. Average
107%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

TMUS Short Interest Over Time

TMUS Days to Cover Over Time

TMUS Percentage of Float Shorted Over Time

T-Mobile US Tesla Short Interest History & Recent Changes

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Report DateTotal Shares Sold ShortDollar Volume Sold ShortChange from Previous ReportPercentage of Float ShortedDays to CoverPrice on Report Date
9/15/202618,071,400 shares $3.26 billion +5.7%1.7%4.57 $180.47
8/31/202617,093,779 shares $3.08 billion +0.9%1.6%4.37 $180.44
8/14/202616,943,967 shares $3.09 billion -6.3%1.6%4.24 $182.61
7/31/202618,076,785 shares $3.12 billion -19.8%1.7%3.29 $172.71
7/15/202622,533,542 shares $4.23 billion +12.6%2.1%4.84 $187.62
6/30/202620,010,780 shares $3.36 billion -14.9%1.9%2.78 $167.73
6/15/202623,503,410 shares $4.44 billion +17.8%2.2%4.43 $188.86
5/29/202619,947,133 shares $3.74 billion +6.6%1.8%4.66 $187.53
5/15/202618,711,046 shares $3.47 billion +1.8%1.7%4.06 $185.22
4/30/202618,379,947 shares $3.59 billion -0.6%1.7%2.41 $195.50
4/15/202618,487,224 shares $3.52 billion -13.5%1.7%3.42 $190.19
3/31/202621,359,153 shares $4.49 billion +78.2%2.0%3.52 $210.03
3/13/202611,985,221 shares $2.61 billion -10.0%1.1%2.57 $217.39
2/27/202613,314,008 shares $2.89 billion -4.6%1.2%2.4 $217.09
2/13/202613,955,516 shares $3.06 billion +5.6%1.3%1.72 $219.50
1/30/202613,211,543 shares $2.61 billion -12.3%1.2%1.85 $197.21
1/15/202615,062,587 shares $2.87 billion -3.0%1.4%3.21 $190.66
12/31/202515,520,683 shares $3.15 billion -0.7%1.4%2.9 $203.04
12/15/202515,628,622 shares $3.07 billion +3.3%1.4%3.34 $196.16
11/28/202515,124,576 shares $3.16 billion +33.9%1.4%2.83 $209.23
11/14/202511,295,704 shares $2.44 billion -11.1%1.0%2.24 $216.08
10/31/202512,703,618 shares $2.67 billion +17.0%1.1%2.25 $210.05
10/15/202510,850,000 shares $2.46 billion -18.4%2.4%2.6 $226.65
9/30/202513,290,000 shares $3.18 billion +6.1%2.9%3.2 $239.38
9/15/202512,530,000 shares $3.00 billion -3.7%2.8%3 $239.74
8/31/202513,010,000 shares $3.28 billion +11.1%2.9%2.9 $251.99
8/15/202511,710,000 shares $2.98 billion -3.0%2.6%2.6 $254.63
7/31/202512,070,000 shares $2.88 billion -12.2%2.9%2.7 $238.41
7/15/202513,750,000 shares $3.11 billion -15.4%3.3%3 $226.02
6/30/202516,250,000 shares $3.87 billion +12.2%3.8%3.5 $238.26
6/15/202514,490,000 shares $3.30 billion -1.8%3.0%3.1 $228.00
5/31/202514,750,000 shares $3.58 billion +6.7%3.2%3.4 $242.61
5/15/202513,830,000 shares $3.32 billion +15.4%3.0%3.1 $240.16
4/30/202511,990,000 shares $2.96 billion -6.7%2.6%2.8 $246.95
4/15/202512,850,000 shares $3.43 billion -2.7%2.8%2.9 $266.71
3/31/202513,200,000 shares $3.52 billion -12.1%2.9%3.1 $266.71
3/15/202515,010,000 shares $3.84 billion +8.2%3.2%3.8 $255.98
2/28/202513,870,000 shares $3.74 billion -8.3%2.9%3.5 $269.69
2/15/202515,130,000 shares $4.10 billion +11.7%3.2%4 $270.82
1/31/202513,550,000 shares $3.16 billion -11.2%2.9%3.7 $232.97
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1/15/202515,250,000 shares $3.27 billion +5.4%3.2%4.1 $214.20
12/31/202414,470,000 shares $3.19 billion -0.2%3.0%4 $220.73
12/15/202414,500,000 shares $3.36 billion -4.0%3.0%4 $231.94
11/30/202415,110,000 shares $3.73 billion +6.3%3.1%4.1 $246.94
11/15/202414,210,000 shares $3.35 billion +2.6%3.0%3.8 $235.61
10/31/202413,850,000 shares $3.09 billion -3.1%2.9%3.8 $223.16
10/15/202414,290,000 shares $3.10 billion +2.7%2.9%3.7 $217.03
9/30/202413,910,000 shares $2.87 billion -6.4%2.9%3.5 $206.36
9/15/202414,860,000 shares $3.01 billion -14.7%3.1%3.6 $202.83
8/31/202417,430,000 shares $3.46 billion +4.7%3.6%3.9 $198.72
8/15/202416,650,000 shares $3.24 billion +4.5%3.4%3.4 $194.63
7/31/202415,930,000 shares $2.90 billion -16.8%3.3%3.1 $182.28
7/15/202419,150,000 shares $3.48 billion -1.9%3.9%3.8 $181.75
6/30/202419,520,000 shares $3.44 billion -23.5%4.0%3.9 $176.18
6/15/202425,510,000 shares $4.49 billion +0.8%5.5%5 $175.99
5/31/202425,310,000 shares $4.43 billion +8.0%5.7%5.4 $174.96
5/15/202423,430,000 shares $3.81 billion -3.5%5.3%5.4 $162.68
4/30/202424,270,000 shares $3.98 billion +4.8%5.6%5.6 $164.17
4/15/202423,160,000 shares $3.70 billion -4.0%5.2%5.1 $159.82
3/31/202424,120,000 shares $3.94 billion -2.4%5.5%5.3 $163.22
3/15/202424,700,000 shares $4.00 billion -8.1%5.6%5.4 $161.81
2/29/202426,880,000 shares $4.39 billion -0.9%5.7%5.8 $163.30
2/15/202427,110,000 shares $4.38 billion -2.5%6.3%6 $161.57
1/31/202427,810,000 shares $4.48 billion +10.2%6.8%6.2 $161.23
1/15/202425,240,000 shares $4.10 billion +3.1%6.3%5.7 $162.54
12/31/202324,480,000 shares $3.92 billion -11.1%6.2%5.6 $160.33
12/15/202327,520,000 shares $4.30 billion +9.6%6.1%6.5 $156.15
11/30/202325,120,000 shares $3.78 billion -8.0%5.5%5.6 $150.45
11/15/202327,300,000 shares $4.02 billion +5.9%6.0%5.8 $147.20
10/31/202325,770,000 shares $3.71 billion -1.2%5.5%5.6 $143.86
10/15/202326,080,000 shares $3.69 billion +2.6%5.5%5.7 $141.67
9/30/202325,410,000 shares $3.56 billion -8.5%5.4%5.4 $140.05
9/15/202327,770,000 shares $3.94 billion +6.2%5.9%5.9 $141.93
8/31/202326,150,000 shares $3.56 billion +12.8%5.5%5.3 $136.25
8/15/202323,190,000 shares $3.21 billion +3.1%4.9%4 $138.58
7/31/202322,490,000 shares $3.10 billion -6.1%4.7%3.6 $137.77
7/15/202323,950,000 shares $3.35 billion -1.5%4.8%3.7 $139.68
6/30/202324,310,000 shares $3.38 billion -15.0%4.9%3.9 $138.90
6/15/202328,610,000 shares $3.80 billion -1.8%5.7%4.4 $132.76
5/31/202329,140,000 shares $4.00 billion +1.0%5.7%4.5 $137.25
5/15/202328,850,000 shares $4.17 billion +2.6%5.6%5.3 $144.62
4/30/202328,120,000 shares $4.05 billion -10.3%5.5%5.4 $143.90
4/15/202331,340,000 shares $4.69 billion -2.6%6.0%6.1 $149.59
3/31/202332,190,000 shares $4.66 billion +42.4%6.2%6.1 $144.84
3/15/202322,610,000 shares $3.27 billion +12.4%4.3%4.4 $144.42
2/28/202320,120,000 shares $2.86 billion +10.6%3.8%3.9 $142.18
2/15/202318,190,000 shares $2.68 billion +14.7%3.4%3.6 $147.55
1/31/202315,860,000 shares $2.37 billion -8.3%2.9%3 $149.31
1/15/202317,290,000 shares $2.59 billion -1.7%3.2%3.2 $149.68
12/30/202217,580,000 shares $2.46 billion -2.1%3.2%3.2 $140.00
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12/15/202217,950,000 shares $2.52 billion +19.2%3.3%3.2 $140.20
11/30/202215,060,000 shares $2.28 billion -11.2%2.8%2.8 $151.46
11/15/202216,960,000 shares $2.46 billion +2.9%3.1%3.2 $145.00
10/31/202216,480,000 shares $2.50 billion +3.3%3.0%3.4 $151.56
10/15/202215,950,000 shares $2.10 billion -2.3%2.9%3.5 $131.52
9/30/202216,320,000 shares $2.19 billion +11.7%2.9%3.7 $134.17
9/15/202214,610,000 shares $2.06 billion -2.8%2.6%3.4 $141.02
8/31/202215,030,000 shares $2.16 billion +3.5%2.7%3.6 $143.96
8/15/202214,520,000 shares $2.13 billion +5.5%2.6%3.5 $146.69
7/31/202213,760,000 shares $1.97 billion -8.1%2.5%3.1 $143.06
7/15/202214,970,000 shares $2.06 billion -5.6%2.7%3.2 $137.37
6/30/202215,860,000 shares $2.13 billion -3.6%2.9%3.5 $134.54
6/15/202216,450,000 shares $2.08 billion +2.1%3.0%3.4 $126.52
5/31/202216,110,000 shares $2.15 billion -4.7%2.9%3.3 $133.29
5/15/202216,910,000 shares $2.14 billion +2.7%3.1%3.4 $126.33
4/30/202216,460,000 shares $2.03 billion -20.1%3.0%3.2 $123.14
4/15/202220,590,000 shares $2.74 billion +15.9%3.8%3.8 $132.96
3/31/202217,760,000 shares $2.28 billion +19.4%3.0%3.2 $128.35
3/15/202214,880,000 shares $1.88 billion +9.9%2.5%2.7 $126.28
2/28/202213,540,000 shares $1.67 billion -7.6%2.3%2.4 $123.21
2/15/202214,650,000 shares $1.86 billion -3.6%2.5%2.6 $127.03
1/31/202215,190,000 shares $1.64 billion +11.5%2.6%2.7 $108.17
1/15/202213,620,000 shares $1.48 billion +2.1%2.3%2.6 $108.52
12/31/202113,340,000 shares $1.55 billion -0.7%2.3%2.5 $115.98
12/15/202113,440,000 shares $1.59 billion -11.6%2.3%2.6 $118.42
11/30/202115,210,000 shares $1.66 billion +27.7%2.6%2.8 $108.81
11/15/202111,910,000 shares $1.40 billion +1.8%2.0%2.3 $117.77
10/29/202111,700,000 shares $1.35 billion -24.0%2.0%2.3 $115.03
10/15/202115,390,000 shares $1.81 billion -4.1%2.6%3 $117.56
9/30/202116,050,000 shares $2.05 billion -26.7%2.5%3.4 $127.76

TMUS Short Interest - Frequently Asked Questions

Short interest is the volume of T-Mobile US shares that have been sold short but have not yet been closed out or covered. As of September 15th, traders have sold 18,071,400 shares of TMUS short. 1.69% of T-Mobile US's shares are currently sold short. Learn More on T-Mobile US's current short interest.

The short interest ratio, also known as the "days to cover ratio", is calculated by dividing the number of shares of a stock sold short divided by its average trading volume. A short interest ratio ranging between 1 and 4 generally indicates strong positive sentiment about a stock and a lack of short sellers. A short interest ratio of 10 or greater indicates strong pessimism about a stock. TMUS shares currently have a short interest ratio of 4.6. Learn More on T-Mobile US's short interest ratio.

Companies that have a short interest as a percentage of float below 10% indicates positive investor sentiment and few short sellers. Stocks with a short interest percentage above 10% is considered high, suggesting some investors are pessimistic about the stock. Companies with a short interest percentage of 20% or more indicates widespread negative sentiment. 1.69% of T-Mobile US's floating shares are currently sold short.

T-Mobile US saw a increase in short interest during the month of September. As of September 15th, there was short interest totaling 18,071,400 shares, an increase of 5.7% from the previous total of 17,093,779 shares. Changes in short volume can be used to identify positive and negative investor sentiment. Investors that short sell a stock are betting that its price will decline in the future. An increase in short sale volume suggests bearish (negative) sentiment among investors. A decrease on short sale volume suggests bullish (positive) sentiment.

1.69% of T-Mobile US's shares are currently sold short. Here is how the short interest of companies compare to T-Mobile US: Meta Platforms, Inc. (1.41%), Arista Networks, Inc. (1.08%), AT&T Inc. (1.91%), Verizon Communications Inc. (2.02%), Vodafone Group PLC (0.40%), SK Telecom Co., Ltd. (0.86%), TIM S.A. Sponsored ADR (0.62%), VEON Ltd. (0.32%), Turkcell Iletisim Hizmetleri AS (0.28%), Kyivstar Group (0.84%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($75.21 billion), Invesco QQQ ($46.31 billion), iShares Russell 2000 ETF ($27.98 billion), SPDR S&P Biotech ETF ($11.59 billion), Nebius Group N.V. ($9.70 billion), Canadian Natural Resources Limited ($9.42 billion), iShares 20+ Year Treasury Bond ETF ($8.70 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($8.53 billion), iShares iBoxx $ Investment Grade Corporate Bond ETF ($7.79 billion), and Financial Select Sector SPDR Fund ($7.74 billion). View all of the most shorted stocks.

Short selling TMUS is an investing strategy that aims to generate trading profit from T-Mobile US as its price is falling. TMUS shares are trading down $0.31 today. To short a stock, an investor borrows shares, sells them and buys the shares back on the public market later to return it to the lender. Short sellers are betting that a stock will decline in price. If the stock does drop after selling, the short seller buys it back at a lower price and returns it to the lender. The difference between the sell price and the buy price is the trader's profit.

A short squeeze for T-Mobile US occurs when it has a large amount of short interest and its stock increases in price. This forces short sellers to cover their short interest positions by buying actual shares of TMUS, which in turn drives the price of the stock up even further.

Short interest is typically published by a stock exchange once per month. However, NASDAQ publishes a report for U.S. stocks, including TMUS, twice per month. The most recent reporting period available is September, 15 2026.

Understanding short interest metrics can help you assess how traders are positioning around a stock like TMUS:

  • Shares Sold Short: The total number of shares that have been sold by short sellers but have not yet been covered or closed out. A high number may indicate bearish sentiment.
  • Short Float: The percentage of a company’s publicly available shares (or "float") that are sold short. A higher short float suggests a greater portion of the stock is being bet against.
  • Days to Cover (Short Interest Ratio): This estimates how many days it would take short sellers to cover their positions, based on average daily trading volume. Higher values can signal potential for a short squeeze if buying pressure increases.

These metrics are often used by traders to gauge sentiment, volatility risk, and the potential for price movements based on short covering activity.


Related Companies
Short Interest Tools

Short interest data for NASDAQ:TMUS is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/24/2026. FINRA publishes updated short interest twice a month.
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