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Marten Transport (MRTN) Short Interest Ratio & Short Volume

Marten Transport logo
$14.36 -0.10 (-0.69%)
As of 08/28/2026 04:00 PM Eastern
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Marten Transport Short Interest Overview

As of August 14, 2026, Marten Transport (MRTN) had a short interest of 3.40 million shares sold short, representing 5.38% of the public float. This marks a -3.33% decrease in short interest since the prior report. The short interest ratio (days to cover) is 4.9, meaning it would take 4.9 days of the average trading volume of 573,712 shares to cover all short positions.

Current Short Interest
3,402,397 shares
Previous Short Interest
3,519,434 shares
Change Vs. Previous Month
-3.33%
Dollar Volume Sold Short
$51.75 million
Short Interest Ratio
4.9 Days to Cover
Last Record Date
August 14, 2026
Outstanding Shares
81,660,000 shares
Short Percent of Float
5.38%
Today's Trading Volume
429,339 shares
Average Trading Volume
573,712 shares
Today's Volume Vs. Average
75%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

MRTN Short Interest Over Time

MRTN Days to Cover Over Time

MRTN Percentage of Float Shorted Over Time

Marten Transport 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
8/14/20263,402,397 shares $51.75 million -3.3%5.4%4.88 $15.21
7/31/20263,519,434 shares $52.05 million +0.3%5.6%4.87 $14.79
7/15/20263,510,635 shares $60.28 million +7.9%5.6%6.15 $17.17
6/30/20263,253,266 shares $56.44 million +4.2%5.2%3 $17.35
6/15/20263,122,801 shares $55.49 million +28.4%4.9%3.87 $17.77
5/29/20262,432,052 shares $41.96 million +6.6%3.9%2.59 $17.25
5/15/20262,282,071 shares $35.42 million +18.8%3.6%2.43 $15.52
4/30/20261,920,833 shares $28.97 million +25.0%3.0%2.05 $15.08
4/15/20261,536,278 shares $21.12 million -1.2%2.4%1.97 $13.75
3/31/20261,554,571 shares $20.41 million +9.0%2.5%1.92 $13.13
3/13/20261,425,721 shares $16.75 million -29.9%2.3%2.28 $11.75
2/27/20262,032,909 shares $27.63 million +20.9%3.2%3.44 $13.59
2/13/20261,681,018 shares $22.26 million -12.9%2.7%2.12 $13.24
1/30/20261,929,638 shares $23.73 million -3.2%3.1%2.17 $12.30
1/15/20261,993,268 shares $25.37 million +21.2%3.2%1.65 $12.73
12/31/20251,645,096 shares $18.72 million +18.8%2.6%2.46 $11.38
12/15/20251,384,881 shares $16.27 million +5.4%2.2%1.59 $11.75
11/28/20251,314,216 shares $13.38 million -8.1%2.1%1.98 $10.18
11/14/20251,429,483 shares $13.89 million +1.8%2.3%2.5 $9.72
10/31/20251,403,614 shares $14.36 million -6.4%2.2%1.5 $10.23
10/15/20251,500,000 shares $15.75 million +25.0%2.6%2.2 $10.50
9/30/20251,200,000 shares $12.79 million +16.5%2.1%1.9 $10.66
9/15/20251,030,000 shares $11.99 million +16.1%1.8%1.6 $11.64
8/31/2025887,200 shares $10.50 million -4.6%1.5%1.6 $11.84
8/15/2025930,100 shares $11.09 million -12.3%1.6%1.7 $11.92
7/31/20251,060,000 shares $12.89 million +26.7%1.9%1.9 $12.16
7/15/2025836,800 shares $10.99 million -4.4%1.5%1.6 $13.13
6/30/2025875,400 shares $11.37 million -2.6%1.5%1.7 $12.99
6/15/2025898,400 shares $11.68 million -2.2%1.6%1.8 $13.00
5/31/2025918,600 shares $11.99 million -6.0%1.6%1.8 $13.05
5/15/2025977,600 shares $13.52 million -14.3%1.7%1.9 $13.83
4/30/20251,140,000 shares $14.64 million +6.5%2.0%2.2 $12.84
4/15/20251,070,000 shares $14.21 million +21.5%1.9%2.3 $13.28
3/31/2025881,000 shares $12.09 million -11.8%1.5%1.9 $13.72
3/15/2025998,700 shares $13.61 million +2.8%1.7%2.2 $13.63
2/28/2025971,500 shares $14.30 million +20.4%1.7%2.3 $14.72
2/15/2025807,000 shares $12.40 million -9.7%1.4%2 $15.36
1/31/2025893,600 shares $13.76 million +22.9%1.6%2.3 $15.40
1/15/2025727,200 shares $11.55 million +0.5%1.3%2 $15.88
12/31/2024723,700 shares $11.30 million -3.4%1.3%2 $15.61
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12/15/2024749,300 shares $12.79 million +1.5%1.3%2.2 $17.07
11/30/2024738,300 shares $12.83 million -4.9%1.3%2.3 $17.38
11/15/2024776,300 shares $13.10 million -1.0%1.4%2.3 $16.88
10/31/2024784,300 shares $12.14 million +26.5%1.4%2.7 $15.48
10/15/2024620,200 shares $10.38 million +1.6%1.1%2 $16.73
9/30/2024610,300 shares $10.80 million -14.4%1.1%1.8 $17.70
9/15/2024712,800 shares $12.28 million -11.1%1.2%1.8 $17.23
8/31/2024801,400 shares $13.98 million +17.6%1.4%2 $17.45
8/15/2024681,300 shares $11.77 million -8.3%1.2%1.7 $17.28
7/31/2024743,200 shares $13.98 million -0.6%1.3%1.8 $18.81
7/15/2024747,600 shares $13.43 million -13.1%1.3%1.7 $17.96
6/30/2024859,800 shares $15.86 million +32.8%1.5%2 $18.45
6/15/2024647,500 shares $11.23 million -6.2%1.1%1.5 $17.34
5/31/2024690,100 shares $12.21 million -19.5%1.2%1.3 $17.70
5/15/2024857,400 shares $15.48 million +6.2%1.5%1.6 $18.06
4/30/2024807,500 shares $13.66 million +22.7%1.4%1.5 $16.92
4/15/2024658,200 shares $11.20 million +4.9%1.2%1.2 $17.01
3/31/2024627,700 shares $11.60 million -49.4%1.1%1.4 $18.48
3/15/20241,240,000 shares $23.05 million +18.1%2.2%2.9 $18.59
2/29/20241,050,000 shares $19.79 million +22.9%1.8%3.2 $18.85
2/15/2024854,200 shares $16.78 million -32.7%1.5%2.9 $19.64
1/31/20241,270,000 shares $23.50 million +6.7%2.2%4.3 $18.50
1/15/20241,190,000 shares $23.67 million -3.3%2.1%4.3 $19.89
12/31/20231,230,000 shares $25.81 million +3.4%2.1%4.5 $20.98
12/15/20231,190,000 shares $23.62 million +0.9%2.1%4.4 $19.85
11/30/20231,180,000 shares $22.24 million +18.0%2.1%4.5 $18.85
11/15/20231,000,000 shares $19 million -13.0%1.7%3.8 $19.00
10/31/20231,150,000 shares $20.22 million +10.6%2.0%4.3 $17.58
10/15/20231,040,000 shares $20.09 million -3.7%1.8%3.8 $19.32
9/30/20231,080,000 shares $21.29 million -7.7%1.9%3.8 $19.71
9/15/20231,170,000 shares $23.94 million -6.4%2.0%4 $20.46
8/31/20231,250,000 shares $26.25 million +6.8%2.2%3.9 $21.00
8/15/20231,170,000 shares $25.89 million +2.6%2.0%3.6 $22.13
7/31/20231,140,000 shares $25.83 million -0.9%2.0%3.4 $22.66
7/15/20231,150,000 shares $23.55 million +6.5%2.0%3.4 $20.48
6/30/20231,080,000 shares $23.22 million -19.4%1.9%3.3 $21.50
6/15/20231,340,000 shares $29.47 million -14.1%2.3%4.3 $21.99
5/31/20231,560,000 shares $32.99 million -1.3%2.7%5.2 $21.15
5/15/20231,580,000 shares $32.63 million -5.4%2.8%5.6 $20.65
4/30/20231,670,000 shares $33.72 million +16.8%2.9%6.1 $20.19
4/15/20231,430,000 shares $29.23 million -5.3%2.5%5.2 $20.44
3/31/20231,510,000 shares $31.63 million +11.0%2.6%5.7 $20.95
3/15/20231,360,000 shares $27.88 million -6.2%2.4%5.2 $20.50
2/28/20231,450,000 shares $32.00 million -9.4%2.5%5 $22.07
2/15/20231,600,000 shares $35.57 million -4.2%2.8%5.5 $22.23
1/31/20231,670,000 shares $36.89 million +3.1%2.9%5.7 $22.09
1/15/20231,620,000 shares $32.59 million +3.9%2.8%5.7 $20.12
12/30/20221,560,000 shares $30.86 million +6.1%2.7%4.9 $19.78
12/15/20221,470,000 shares $30.16 million +14.8%2.6%4.2 $20.52
11/30/20221,280,000 shares $27.28 million -25.6%2.2%3.6 $21.31
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11/15/20221,720,000 shares $36.62 million -10.4%3.0%4.5 $21.29
10/31/20221,920,000 shares $36.04 million -8.1%3.4%4.7 $18.77
10/15/20222,090,000 shares $41.11 million -2.8%3.7%4.8 $19.67
9/30/20222,150,000 shares $41.19 million +3.4%3.8%4.8 $19.16
9/15/20222,080,000 shares $41.41 million -3.3%3.6%4.4 $19.91
8/31/20222,150,000 shares $42.59 million -10.8%3.8%4.7 $19.81
8/15/20222,410,000 shares $55.19 million +6.6%4.2%5.4 $22.90
7/31/20222,260,000 shares $48.73 million +13.0%3.9%5 $21.56
7/15/20222,000,000 shares $34.66 million +0.5%3.5%4.2 $17.33
6/30/20221,990,000 shares $33.47 million -6.6%3.4%4 $16.82
6/15/20222,130,000 shares $37.66 million +16.4%3.7%3.9 $17.68
5/31/20221,830,000 shares $32.13 million -5.2%3.2%3.5 $17.56
5/15/20221,930,000 shares $34.70 million +9.7%3.3%3.6 $17.98
4/30/20221,760,000 shares $30.59 million +2.9%3.0%3.5 $17.38
4/15/20221,710,000 shares $27.14 million -13.6%2.7%3.4 $15.87
3/31/20221,980,000 shares $35.16 million -1.0%3.1%4.5 $17.76
3/15/20222,000,000 shares $38.58 million +5.8%3.1%5.5 $19.29
2/28/20221,890,000 shares $32.60 million +9.3%2.9%5 $17.25
2/15/20221,730,000 shares $28.84 million +1.2%2.7%4.8 $16.67
1/31/20221,710,000 shares $28.54 million +14.8%2.7%5 $16.69
1/15/20221,490,000 shares $24.63 million +2.8%2.3%5 $16.53
12/31/20211,450,000 shares $24.88 million +31.8%2.3%4.6 $17.16
12/15/20211,100,000 shares $18.62 million -23.1%1.7%3.3 $16.93
11/30/20211,430,000 shares $22.99 million +2.9%2.2%4.8 $16.08
11/15/20211,390,000 shares $24.45 million +0.7%2.2%4.7 $17.59
10/29/20211,380,000 shares $22.95 million +5.3%2.2%4.6 $16.63
10/15/20211,310,000 shares $20.42 million -10.9%2.0%4.2 $15.59
9/30/20211,470,000 shares $23.06 million -10.4%2.3%4.7 $15.69
9/15/20211,640,000 shares $25.90 million -18.8%2.6%5 $15.79
8/31/20212,020,000 shares $31.49 million +7.5%3.2%6.5 $15.59

MRTN Short Interest - Frequently Asked Questions

Short interest is the volume of Marten Transport shares that have been sold short but have not yet been covered or closed out. As of August 14th, investors have sold 3,402,397 shares of MRTN short. 5.38% of Marten Transport's shares are currently sold short. Learn More on Marten Transport'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. MRTN shares currently have a short interest ratio of 4.9. Learn More on Marten Transport'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. 5.38% of Marten Transport's floating shares are currently sold short.

Marten Transport saw a decrease in short interest in the month of August. As of August 14th, there was short interest totaling 3,402,397 shares, a decrease of 3.3% from the previous total of 3,519,434 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.

5.38% of Marten Transport's shares are currently sold short. Here is how the short interest of companies in the sector of "industrials" compare to Marten Transport: ArcBest Corporation (5.82%), Heartland Express, Inc. (6.39%), Hub Group, Inc. (6.15%), J.B. Hunt Transport Services, Inc. (3.07%), Landstar System, Inc. (3.98%), Old Dominion Freight Line, Inc. (3.81%), Werner Enterprises, Inc. (6.88%), Knight-Swift Transportation Holdings Inc. (6.38%), Schneider National, Inc. (4.18%), Rxo Inc (8.90%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($71.57 billion), Invesco QQQ ($46.97 billion), iShares Russell 2000 ETF ($24.02 billion), Nebius Group N.V. ($15.37 billion), Sandisk Corporation ($12.60 billion), SPDR S&P Biotech ETF ($12.14 billion), Western Digital Corporation ($10.32 billion), iShares 20+ Year Treasury Bond ETF ($8.38 billion), VanEck Semiconductor ETF ($7.62 billion), and iShares iBoxx $ High Yield Corporate Bond ETF ($7.07 billion). View all of the most shorted stocks.

Short selling MRTN is an investing strategy that aims to generate trading profit from Marten Transport as its price is falling. MRTN shares are trading down $0.10 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 Marten Transport 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 MRTN, 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 MRTN, twice per month. The most recent reporting period available is August, 14 2026.

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

  • 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.


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Short Interest Tools

Short interest data for NASDAQ:MRTN is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 8/25/2026. FINRA publishes updated short interest twice a month.
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