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TriSalus Life Sciences (TLSI) Short Interest Ratio & Short Volume

TriSalus Life Sciences logo
$5.10 +0.20 (+4.08%)
Closing price 09/18/2026 04:00 PM Eastern
Extended Trading
$5.12 +0.02 (+0.29%)
As of 09/18/2026 07:05 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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TriSalus Life Sciences Short Interest Overview

As of August 31, 2026, TriSalus Life Sciences (TLSI) had a short interest of 3.69 million shares sold short, representing 7.16% of the public float. This marks a -2.59% decrease in short interest since the prior report. The short interest ratio (days to cover) is 35.9, meaning it would take 35.9 days of the average trading volume of 106,115 shares to cover all short positions.

Current Short Interest
3,692,615 shares
Previous Short Interest
3,790,922 shares
Change Vs. Previous Month
-2.59%
Dollar Volume Sold Short
$18.28 million
Short Interest Ratio
35.9 Days to Cover
Last Record Date
August 31, 2026
Outstanding Shares
61,580,000 shares
Short Percent of Float
7.16%
Today's Trading Volume
606,910 shares
Average Trading Volume
106,115 shares
Today's Volume Vs. Average
572%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

TLSI Short Interest Over Time

TLSI Days to Cover Over Time

TLSI Percentage of Float Shorted Over Time

TriSalus Life Sciences 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
8/31/20263,692,615 shares $18.28 million -2.6%7.2%35.88 $4.95
8/14/20263,790,922 shares $19.98 million +0.5%7.4%14 $5.27
7/31/20263,773,177 shares $17.13 million +5.9%7.3%22.15 $4.54
7/15/20263,564,595 shares $14.61 million +15.7%6.9%12.88 $4.10
6/30/20263,080,231 shares $14.02 million +40.7%6.0%4.54 $4.55
6/15/20262,188,985 shares $9.19 million +4.2%4.3%6.76 $4.20
5/29/20262,101,834 shares $7.17 million +24.7%4.1%4.91 $3.41
5/15/20261,685,210 shares $4.52 million +16.8%3.3%1.65 $2.68
4/30/20261,442,308 shares $6.23 million +9.0%2.8%12.25 $4.32
4/15/20261,323,315 shares $5.94 million +10.5%2.6%8.84 $4.49
3/31/20261,198,022 shares $4.79 million +10.9%2.3%5.91 $4.00
3/13/20261,080,396 shares $4.41 million +9.5%2.1%4.35 $4.08
2/27/2026986,706 shares $4.99 million -15.0%1.9%4.14 $5.06
2/13/20261,160,400 shares $5.65 million +2.0%2.3%11.42 $4.87
1/30/20261,138,040 shares $5.66 million -9.4%2.2%8.33 $4.97
1/15/20261,255,516 shares $7.72 million -2.0%2.4%9.21 $6.15
12/31/20251,281,631 shares $8.95 million +61.3%2.5%5.3 $6.98
12/15/2025794,549 shares $5.81 million +5.3%1.5%4.39 $7.31
11/28/2025754,571 shares $5.14 million +18.4%1.5%4.7 $6.82
11/14/2025637,288 shares $2.91 million -0.8%1.8%6.06 $4.56
10/31/2025642,596 shares $3.05 million -12.0%1.8%6.08 $4.74
10/15/2025730,100 shares $3.31 million -20.5%4.5%6.1 $4.54
9/30/2025918,500 shares $4.27 million +78.2%5.7%9.1 $4.65
9/15/2025515,400 shares $2.37 million +12.8%3.2%4.2 $4.60
8/31/2025457,100 shares $2.39 million -17.3%2.8%4.4 $5.22
8/15/2025552,800 shares $2.52 million -5.2%3.4%5.6 $4.55
7/31/2025582,900 shares $2.47 million -3.7%3.9%7 $4.23
7/15/2025605,300 shares $2.87 million +10.0%3.8%8.2 $4.74
6/30/2025550,400 shares $3.00 million +359.8%3.5%7.3 $5.45
6/15/2025119,700 shares $621.24 thousand +266.1%0.8%2.5 $5.19
5/31/202532,700 shares $177.56 thousand -70.0%0.2%0.7 $5.43
5/15/2025109,000 shares $556.99 thousand +206.2%0.7%2.2 $5.11
4/30/202535,600 shares $182.63 thousand +34.9%0.3%0.7 $5.13
4/15/202526,400 shares $145.73 thousand -78.5%0.2%0.5 $5.52
3/31/2025123,000 shares $678.96 thousand -0.9%0.9%2.6 $5.52
3/15/2025124,100 shares $652.77 thousand -8.8%1.0%2.7 $5.26
2/28/2025136,100 shares $783.94 thousand +6.3%1.1%3.6 $5.76
2/15/2025128,000 shares $723.20 thousand +75.3%1.2%3.1 $5.65
1/31/202573,000 shares $373.03 thousand -12.2%0.7%1.8 $5.11
1/15/202583,100 shares $398.88 thousand -0.8%0.8%2.2 $4.80
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12/31/202483,800 shares $419.84 thousand +45.5%2.4%2.2 $5.01
12/15/202457,600 shares $225.22 thousand +22.8%1.7%1.6 $3.91
11/30/202446,900 shares $213.86 thousand +47.5%1.7%1.1 $4.56
11/15/202431,800 shares $124.97 thousand -45.6%0.7%0.7 $3.93
10/31/202458,400 shares $231.85 thousand -6.0%1.3%1.3 $3.97
10/15/202462,100 shares $276.97 thousand +21.3%1.4%1.3 $4.46
9/30/202451,200 shares $236.03 thousand +62.5%1.0%1.1 $4.61
9/15/202431,500 shares $142.38 thousand -4.3%0.6%0.7 $4.52
8/31/202432,900 shares $172.73 thousand -20.0%0.6%0.8 $5.25
8/15/202441,100 shares $242.08 thousand -4.2%0.8%1 $5.89
7/31/202442,900 shares $244.53 thousand -18.0%1.3%1.3 $5.70
7/15/202452,300 shares $272.48 thousand -88.5%1.6%1.3 $5.21
6/30/2024453,500 shares $2.50 million +7.5%13.9%10.7 $5.52
6/15/2024421,900 shares $2.43 million +2.1%13.6%9.4 $5.77
5/31/2024413,400 shares $2.96 million +140.2%15.1%8.5 $7.16
5/15/2024172,100 shares $1.62 million +1.5%6.3%3.8 $9.39
4/30/2024169,600 shares $1.58 million -38.6%7.1%4.3 $9.31
4/15/2024276,300 shares $2.62 million -3.9%11.7%9 $9.50
3/31/2024287,400 shares $2.80 million +12.8%12.3%9.1 $9.75
3/15/2024254,900 shares $2.48 million -0.2%10.9%7.1 $9.73
2/29/2024255,400 shares $2.44 million +1.0%11.0%3.7 $9.54
2/15/2024252,900 shares $2.42 million -5.6%10.9%3.7 $9.58
1/31/2024267,800 shares $2.42 million No Change10.4%3.6 $9.04

TLSI Short Interest - Frequently Asked Questions

Short interest is the volume of TriSalus Life Sciences shares that have been sold short but have not yet been closed out or covered. As of August 31st, investors have sold 3,692,615 shares of TLSI short. 7.16% of TriSalus Life Sciences' shares are currently sold short. Learn More on TriSalus Life Sciences' 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. TLSI shares currently have a short interest ratio of 35.9. Learn More on TriSalus Life Sciences'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. 7.16% of TriSalus Life Sciences' floating shares are currently sold short.

TriSalus Life Sciences saw a decline in short interest in the month of August. As of August 31st, there was short interest totaling 3,692,615 shares, a decline of 2.6% from the previous total of 3,790,922 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.

7.16% of TriSalus Life Sciences' shares are currently sold short. Here is how the short interest of companies in the industry of "healthcare equipment" compare to TriSalus Life Sciences: Bioventus Inc. (4.62%), Enovis Corporation (16.24%), iRadimed Corporation (8.34%), CeriBell, Inc. (6.04%), Anbio Biotechnology (0.04%), InMode Ltd. (4.39%), Anteris Technologies Global Corp. (7.49%), SiBone (13.22%), Beta Bionics, Inc. (22.06%), Varex Imaging (3.12%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($62.68 billion), Invesco QQQ ($47.06 billion), iShares Russell 2000 ETF ($23.54 billion), SPDR S&P Biotech ETF ($12.10 billion), Nebius Group N.V. ($9.34 billion), Western Digital Corporation ($8.96 billion), Financial Select Sector SPDR Fund ($8.16 billion), iShares 20+ Year Treasury Bond ETF ($7.98 billion), iShares iBoxx $ High Yield Corporate Bond ETF ($7.52 billion), and VanEck Semiconductor ETF ($7.39 billion). View all of the most shorted stocks.

Short selling TLSI is an investing strategy that aims to generate trading profit from TriSalus Life Sciences as its price is falling. TLSI shares are trading up $0.20 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 TriSalus Life Sciences 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 TLSI, 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 TLSI, twice per month. The most recent reporting period available is August, 31 2026.

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

  • 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:TLSI is sourced from the Financial Industry Regulatory Authority (FINRA), with the most recent report published on 9/10/2026. FINRA publishes updated short interest twice a month.
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