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Anthera Pharmaceuticals (ANTH) Short Interest Ratio & Short Volume

Anthera Pharmaceuticals logo
$0.0001 0.00 (0.00%)
As of 05/15/2026 03:32 PM Eastern
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Anthera Pharmaceuticals Short Interest Overview

As of April 30, 2026, Anthera Pharmaceuticals (ANTH) had a short interest of 3,043 shares sold short. This marks a 0.00% change in short interest since the prior report. The short interest ratio (days to cover) is 17.3, meaning it would take 17.3 days of the average trading volume of 10,642 shares to cover all short positions.

Current Short Interest
3,043 shares
Previous Short Interest
3,043 shares
Change Vs. Previous Month
0.00%
Dollar Volume Sold Short
$0.30
Short Interest Ratio
17.3 Days to Cover
Last Record Date
April 30, 2026
Today's Trading Volume
5,325 shares
Average Trading Volume
10,642 shares
Today's Volume Vs. Average
50%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

ANTH Short Interest Over Time

ANTH Days to Cover Over Time

ANTH Percentage of Float Shorted Over Time

Anthera Pharmaceuticals 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
4/30/20263,043 shares $0.30 No ChangeN/A17.29 $0.00
4/15/20263,043 shares $0.30 No ChangeN/A8.85 $0.00
3/31/20263,043 shares $0.30 No ChangeN/A0.17 $0.00
3/13/20263,043 shares $0.30 No ChangeN/A1.92 $0.00
2/27/20263,043 shares $0.30 No ChangeN/A2.7 $0.00
2/13/20263,043 shares $0.00 No ChangeN/A6.35 $0.00
1/30/20263,043 shares $0.30 No ChangeN/A1.34 $0.00
1/15/20263,043 shares $0.30 No ChangeN/A0.44 $0.00
12/31/20253,043 shares $0.30 No ChangeN/A0.68 $0.00
12/15/20253,043 shares $0.00 No ChangeN/A0.06 $0.00
11/28/20253,043 shares $0.00 No ChangeN/A0.21 $0.00
11/14/20253,043 shares $0.00 No ChangeN/A16.02 $0.00
10/31/20253,043 shares $0.00 No ChangeN/A0.49 $0.00
10/15/20253,000 shares $0.00 -9.1%N/A0.7 $0.00
9/30/20253,300 shares $0.33 -2.9%N/A0.2 $0.00
9/15/20253,400 shares $0.34 No ChangeN/A17 $0.00
8/31/20253,400 shares $0.00 No ChangeN/A1.7 $0.00
8/15/20253,400 shares $0.00 No ChangeN/A0.5 $0.00
7/31/20253,400 shares $0.00 No ChangeN/A17 $0.00
7/15/20253,400 shares $0.00 No ChangeN/A34 $0.00
6/30/20253,400 shares $0.00 No ChangeN/A1.2 $0.00
6/15/20253,400 shares $0.34 No ChangeN/A0.6 $0.00
5/31/20253,400 shares $0.34 No ChangeN/A0.7 $0.00
5/15/20253,400 shares $0.34 No ChangeN/A0.6 $0.00
4/30/20253,400 shares $0.34 No ChangeN/A0.2 $0.00
4/15/20253,400 shares $0.34 No ChangeN/A34 $0.00
3/31/20253,400 shares $0.00 No ChangeN/A34 $0.00
3/15/20253,400 shares $0.00 No ChangeN/A0 $0.00
2/28/20253,400 shares $0.00 No ChangeN/A11.3 $0.00
2/15/20253,400 shares $0.00 No ChangeN/A1.3 $0.00
1/31/20253,400 shares $0.00 No ChangeN/A34 $0.00
1/15/20253,400 shares $0.00 No ChangeN/A4.9 $0.00
12/31/20243,400 shares $0.34 No ChangeN/A0.3 $0.00
12/15/20243,400 shares $0.00 No ChangeN/A4.9 $0.00
11/30/20243,400 shares $0.68 No ChangeN/A0.1 $0.00
11/15/20243,400 shares $0.00 No ChangeN/A0.2 $0.00
10/31/20243,400 shares $0.00 No ChangeN/A0.4 $0.00
10/15/20243,400 shares $0.00 No ChangeN/A6.8 $0.00
9/30/20243,400 shares $0.00 +6.3%N/A0.4 $0.00
9/15/20243,200 shares $0.00 No ChangeN/A32 $0.00
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8/31/20243,200 shares $0.00 No ChangeN/A16 $0.00
8/15/20243,200 shares $0.00 No ChangeN/A32 $0.00
7/31/20243,200 shares $0.00 No ChangeN/A32 $0.00
7/15/20243,200 shares $0.00 No ChangeN/A0 $0.00
6/30/20243,200 shares $0.00 No ChangeN/A2.5 $0.00
6/15/20243,200 shares $0.00 No ChangeN/A0 $0.00
5/31/20243,200 shares $0.00 No ChangeN/A0.7 $0.00
5/15/20243,200 shares $0.00 No ChangeN/A0 $0.00
4/30/20243,200 shares $0.00 No ChangeN/A32 $0.00
4/15/20243,200 shares $0.00 No ChangeN/A0 $0.00
3/31/20243,200 shares $0.00 No ChangeN/A32 $0.00
3/15/20243,200 shares $0.00 No ChangeN/A6.4 $0.00
2/29/20243,200 shares $0.00 No ChangeN/A0 $0.00
2/15/20243,200 shares $0.00 No ChangeN/A32 $0.00
1/15/20243,200 shares $0.00 No ChangeN/A1.4 $0.00
12/31/20233,200 shares $0.00 No ChangeN/A0.2 $0.00
12/15/20233,200 shares $0.00 No ChangeN/A0.7 $0.00
11/30/20233,200 shares $0.00 No ChangeN/A32 $0.00
11/15/20233,200 shares $0.00 No ChangeN/A1.8 $0.00
10/31/20233,200 shares $0.00 No ChangeN/A8 $0.00
10/15/20233,200 shares $0.00 No ChangeN/A2.5 $0.00
9/30/20233,200 shares $0.00 No ChangeN/A8 $0.00
9/15/20233,200 shares $0.00 No ChangeN/A0.2 $0.00
8/31/20233,200 shares $0.00 No ChangeN/A0 $0.00
8/15/20233,200 shares $0.00 No ChangeN/A10.7 $0.00
7/31/20233,200 shares $0.00 No ChangeN/A32 $0.00
7/15/20233,200 shares $0.00 No ChangeN/A0 $0.00
6/30/20233,200 shares $0.00 No ChangeN/A32 $0.00
6/15/20233,200 shares $0.00 No ChangeN/A0 $0.00
5/31/20233,200 shares $0.00 No ChangeN/A32 $0.00
5/15/20233,200 shares $0.00 No ChangeN/A0 $0.00
4/30/20233,200 shares $0.00 No ChangeN/A0 $0.00
4/15/20233,200 shares $0.00 No ChangeN/A10.7 $0.00
3/31/20233,200 shares $0.00 No ChangeN/A3.2 $0.00
3/15/20233,200 shares $0.00 No ChangeN/A1.1 $0.00
2/28/20233,200 shares $0.32 No ChangeN/A1.1 $0.00
2/15/20233,200 shares $0.00 No ChangeN/A1.9 $0.00
1/31/20233,200 shares $0.32 No ChangeN/A5.3 $0.00
1/15/20233,200 shares $0.00 No ChangeN/A2.5 $0.00
12/30/20223,200 shares $0.00 No ChangeN/A0 $0.00
12/15/20223,200 shares $0.00 No ChangeN/A0.2 $0.00
11/30/20223,200 shares $0.00 No ChangeN/A0.2 $0.00
11/15/20223,200 shares $0.00 No ChangeN/A0.2 $0.00
10/31/20223,200 shares $0.32 No ChangeN/A0.8 $0.00
10/15/20223,200 shares $0.00 No ChangeN/A0.3 $0.00
9/30/20223,200 shares $0.00 No ChangeN/A0 $0.00
9/15/20223,200 shares $0.00 No ChangeN/A32 $0.00
8/31/20223,200 shares $0.00 -20.0%N/A0 $0.00
8/15/20224,000 shares $0.00 No ChangeN/A5 $0.00
7/31/20224,000 shares $0.00 No ChangeN/A0.4 $0.00
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7/15/20224,000 shares $0.00 No ChangeN/A13.3 $0.00
6/30/20224,000 shares $0.00 No ChangeN/A40 $0.00
6/15/20224,000 shares $0.00 No ChangeN/A40 $0.00
5/31/20224,000 shares $0.80 No ChangeN/A40 $0.00
5/15/20224,000 shares $0.80 No ChangeN/A0 $0.00
4/30/20224,000 shares $0.80 No ChangeN/A0 $0.00
4/15/20224,000 shares $0.80 No ChangeN/A1.1 $0.00
3/31/20224,000 shares $0.00 No ChangeN/A40 $0.00
3/15/20224,000 shares $0.00 No ChangeN/A40 $0.00
2/28/20224,000 shares $0.00 No ChangeN/A0 $0.00
2/15/20224,000 shares $0.00 No ChangeN/A40 $0.00
1/31/20224,000 shares $0.00 No ChangeN/A40 $0.00
1/15/20224,000 shares $0.00 No ChangeN/A0 $0.00
12/31/20214,000 shares $0.00 No ChangeN/A0.1 $0.00
12/15/20214,000 shares $0.80 No ChangeN/A0.1 $0.00
11/30/20214,000 shares $0.80 No ChangeN/A0.1 $0.00
11/15/20214,000 shares $0.40 No ChangeN/A0.2 $0.00
10/29/20214,000 shares $0.40 No ChangeN/A0.5 $0.00
10/15/20214,000 shares $3.20 No ChangeN/A0 $0.00
9/30/20214,000 shares $3.20 -20.0%N/A0.1 $0.00
9/15/20215,000 shares $100.00 -91.4%N/A0.1 $0.02
8/31/202157,800 shares $1.73 thousand +230.3%N/A0.1 $0.03
8/13/202117,500 shares $420.00 +133.3%N/A0 $0.02
7/30/20217,500 shares $291.75 +1.4%N/A0.1 $0.04
7/15/20217,400 shares $444.00 No ChangeN/A0.1 $0.06
6/30/20217,400 shares $483.41 No ChangeN/A0.1 $0.07
6/15/20217,400 shares $370.00 -21.3%N/A0.1 $0.05
5/28/20219,400 shares $752.00 +27.0%N/A0.2 $0.08

ANTH Short Interest - Frequently Asked Questions

Short interest is the volume of Anthera Pharmaceuticals shares that have been sold short but have not yet been covered or closed out. As of April 30th, investors have sold 3,043 shares of ANTH short. Learn More on Anthera Pharmaceuticals' 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. ANTH shares currently have a short interest ratio of 17.3. Learn More on Anthera Pharmaceuticals's short interest ratio.

Here is how the short interest of companies in the industry of "pharmaceutical products" compare to Anthera Pharmaceuticals: Avidity Biosciences, Inc. (2.30%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($86.09 billion), Invesco QQQ ($39.89 billion), iShares Russell 2000 ETF ($26.13 billion), Western Digital Corporation ($12.66 billion), Salesforce Inc. ($12.29 billion), Sandisk Corporation ($11.87 billion), SPDR S&P Biotech ETF ($9.82 billion), Lumentum Holdings Inc. ($8.51 billion), iShares 20+ Year Treasury Bond ETF ($7.76 billion), and Bloom Energy Corporation ($7.40 billion). View all of the most shorted stocks.

Short selling ANTH is an investing strategy that aims to generate trading profit from Anthera Pharmaceuticals as its price is falling. 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 Anthera Pharmaceuticals 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 ANTH, 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 ANTH, twice per month. The most recent reporting period available is April, 30 2026.

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

  • 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

This page (OTCMKTS:ANTH) was last updated on 5/18/2026 by MarketBeat.com Staff.
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