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Alkermes (ALKS) Short Interest Ratio & Short Volume

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$52.36 +0.65 (+1.25%)
As of 02:16 PM Eastern
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Alkermes Short Interest Overview

As of June 30, 2026, Alkermes (ALKS) had a short interest of 17.46 million shares sold short, representing 10.98% of the public float. This marks a -2.77% decrease in short interest since the prior report. The short interest ratio (days to cover) is 4.8, meaning it would take 4.8 days of the average trading volume of 2.26 million shares to cover all short positions.

Current Short Interest
17,464,944 shares
Previous Short Interest
17,962,751 shares
Change Vs. Previous Month
-2.77%
Dollar Volume Sold Short
$915.16 million
Short Interest Ratio
4.8 Days to Cover
Last Record Date
June 30, 2026
Outstanding Shares
166,680,000 shares
Short Percent of Float
10.98%
Today's Trading Volume
350,066 shares
Average Trading Volume
2,259,288 shares
Today's Volume Vs. Average
15%
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Short Interest ChartDays to Cover ChartShort Percent of Float Chart

ALKS Short Interest Over Time

ALKS Days to Cover Over Time

ALKS Percentage of Float Shorted Over Time

Alkermes 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
6/30/202617,464,944 shares $915.16 million -2.8%11.0%4.81 $52.40
6/15/202617,962,751 shares $796.83 million +3.5%11.3%9.46 $44.36
5/29/202617,355,226 shares $732.22 million -5.1%10.9%8.45 $42.19
5/15/202618,277,684 shares $685.05 million -7.5%11.5%7.55 $37.48
4/30/202619,760,435 shares $666.12 million +0.4%12.4%12.55 $33.71
4/15/202619,684,219 shares $653.91 million +3.5%12.4%8.17 $33.22
3/31/202619,013,418 shares $672.24 million -7.7%12.0%5.86 $35.36
3/13/202620,600,815 shares $571.88 million +13.2%12.9%9.43 $27.76
2/27/202618,196,226 shares $547.71 million +2.1%11.4%9.21 $30.10
2/13/202617,817,507 shares $590.83 million -6.2%11.2%11.7 $33.16
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1/30/202618,996,649 shares $643.80 million -12.3%12.0%7.83 $33.89
1/15/202621,666,003 shares $676.41 million -0.8%13.7%10.45 $31.22
12/31/202521,843,844 shares $611.19 million +9.0%13.8%14.4 $27.98
12/15/202520,033,904 shares $564.36 million +6.4%12.7%11.59 $28.17
11/28/202518,829,721 shares $547.57 million +8.9%11.9%9.04 $29.08
11/14/202517,295,320 shares $502.26 million +8.8%11.0%4.75 $29.04
10/31/202515,896,950 shares $488.04 million +10.4%10.1%5.86 $30.70
10/15/202514,400,000 shares $464.11 million -5.3%9.1%7.3 $32.23
9/30/202515,210,000 shares $456.30 million +1.0%N/A7.9 $30.00
9/15/202515,060,000 shares $399.39 million +13.2%N/A7.8 $26.52
8/31/202513,310,000 shares $385.59 million -3.6%8.4%6.9 $28.97
8/15/202513,810,000 shares $401.18 million -0.1%N/A7.7 $29.05
7/31/202513,820,000 shares $366.09 million +9.9%8.8%7.8 $26.49
7/15/202512,570,000 shares $362.64 million +6.0%N/A7.1 $28.85
6/30/202511,860,000 shares $339.31 million +12.3%7.5%6.7 $28.61
6/15/202510,560,000 shares $315.00 million -8.7%6.7%6.1 $29.83
5/31/202511,560,000 shares $356.63 million +2.6%7.5%6.8 $30.85
5/15/202511,270,000 shares $351.74 million -11.7%7.3%6.4 $31.21
4/30/202512,760,000 shares $367.11 million +3.3%N/A6.6 $28.77
4/15/202512,350,000 shares $345.06 million +12.3%8.0%6.7 $27.94
3/31/202511,000,000 shares $363.22 million -15.1%7.1%6.3 $33.02
3/15/202512,950,000 shares $440.69 million -7.6%8.2%7.6 $34.03
2/28/202514,010,000 shares $480.96 million +21.1%8.8%8.3 $34.33
2/15/202511,570,000 shares $415.25 million +6.9%7.3%7 $35.89
1/31/202510,820,000 shares $341.15 million -4.8%6.8%6.8 $31.53
1/15/202511,370,000 shares $330.30 million +5.9%7.2%6.9 $29.05
12/31/202410,740,000 shares $308.88 million -14.1%6.8%6.5 $28.76
12/15/202412,500,000 shares $381.38 million -8.8%7.9%7.2 $30.51
11/30/202413,710,000 shares $397.86 million -17.2%8.6%7.9 $29.02
11/15/202416,560,000 shares $466.83 million +2.7%10.4%9.6 $28.19
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10/31/202416,120,000 shares $414.28 million +1.9%10.2%9.7 $25.70
10/15/202415,820,000 shares $442.96 million -7.9%N/A9.2 $28.00
9/30/202417,180,000 shares $480.87 million -7.7%N/A9.6 $27.99
9/15/202418,620,000 shares $515.03 million +8.3%N/A10.6 $27.66
8/31/202417,190,000 shares $489.06 million -2.9%N/A9.4 $28.45
8/15/202417,700,000 shares $477.55 million -4.5%N/A9.2 $26.98
7/31/202418,540,000 shares $506.51 million +14.9%N/A9.6 $27.32
7/15/202416,130,000 shares $376.96 million +17.9%N/A8.9 $23.37
6/30/202413,680,000 shares $329.69 million +14.4%N/A7.4 $24.10
6/15/202411,960,000 shares $293.02 million +2.0%N/A6.6 $24.50
5/31/202411,730,000 shares $274.48 million -9.4%N/A6.2 $23.40
5/15/202412,940,000 shares $312.37 million +0.4%N/A7 $24.14
4/30/202412,890,000 shares $316.32 million -4.7%N/A6.3 $24.54
4/15/202413,520,000 shares $324.75 million -5.7%N/A6.9 $24.02
3/31/202414,340,000 shares $388.18 million +1.9%N/A7.5 $27.07
3/15/202414,080,000 shares $404.80 million +8.1%N/A7.7 $28.75
2/29/202413,020,000 shares $386.56 million +6.6%N/A5.6 $29.69
2/15/202412,220,000 shares $397.88 million +4.8%N/A4.9 $32.56
1/31/202411,660,000 shares $315.40 million -11.9%N/A5 $27.05
1/15/202413,230,000 shares $373.09 million -5.6%N/A5 $28.20
12/31/202314,020,000 shares $388.91 million +44.8%N/A5.4 $27.74
12/15/20239,680,000 shares $265.43 million +24.4%N/A3.7 $27.42
11/30/20237,780,000 shares $187.81 million -2.3%N/A3.8 $24.14
11/15/20237,960,000 shares $188.73 million -0.4%N/A4.2 $23.71
10/31/20237,990,000 shares $193.28 million +9.9%N/A4.2 $24.19
10/15/20237,270,000 shares $201.60 million -16.8%N/A3.9 $27.73
9/30/20238,740,000 shares $244.81 million -10.0%N/A5.1 $28.01
9/15/20239,710,000 shares $287.42 million +2.4%N/A5.6 $29.60
8/31/20239,480,000 shares $276.72 million +16.0%N/A5.5 $29.19
8/15/20238,170,000 shares $235.79 million +33.7%N/A5.3 $28.86
7/31/20236,110,000 shares $178.90 million +1.0%N/A4.2 $29.28
7/15/20236,050,000 shares $184.16 million +3.6%N/A4.5 $30.44
6/30/20235,840,000 shares $182.79 million -8.9%N/A4.2 $31.30
6/15/20236,410,000 shares $204.67 million -10.1%N/A4.8 $31.93
5/31/20237,130,000 shares $206.27 million -4.4%N/A5.6 $28.93
5/15/20237,460,000 shares $231.26 million -1.8%N/A5.9 $31.00
4/30/20237,600,000 shares $216.98 million -13.9%N/A5.8 $28.55
4/15/20238,830,000 shares $259.16 million -5.3%N/A7.1 $29.35
3/31/20239,320,000 shares $262.73 million -1.6%N/A7.5 $28.19
3/15/20239,470,000 shares $252.09 million +5.5%N/A7.6 $26.62
2/28/20238,980,000 shares $240.13 million No ChangeN/A6.9 $26.74
2/15/20238,980,000 shares $242.37 million -1.8%N/A6.6 $26.99
1/31/20239,140,000 shares $261.77 million -2.4%N/A6.5 $28.64
1/15/20239,360,000 shares $255.62 million +1.9%N/A5.7 $27.31
12/30/20229,190,000 shares $240.13 million +3.6%N/A5.4 $26.13
12/15/20228,870,000 shares $222.55 million +1.4%N/A5.1 $25.09
11/30/20228,750,000 shares $216.83 million -4.0%N/A5.2 $24.78
11/15/20229,110,000 shares $205.70 million +2.7%N/A5.4 $22.58
10/31/20228,870,000 shares $201.35 million -2.4%N/A5.5 $22.70
10/15/20229,090,000 shares $205.62 million -0.8%N/A5.6 $22.62
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Tired of trying tactic after tactic when it comes to options trades... only to be met with market noise and stinging losses? Dave Aquino is giving away the exact 11-hour options strategy he uses in volatile markets. You get the plain English blueprint behind the strategy and the very same "rinse and repeat" ticker he's traded nearly 900 times with a 95.3% success rate. It's so simple to understand, you could trade it tomorrow.tc pixel

9/30/20229,160,000 shares $204.54 million +4.9%N/A6.4 $22.33
9/15/20228,730,000 shares $207.51 million +5.1%N/A6.2 $23.77
8/31/20228,310,000 shares $196.70 million +8.2%N/A5.8 $23.67
8/15/20227,680,000 shares $204.29 million +0.5%N/A5.2 $26.60
7/31/20227,640,000 shares $195.58 million +3.5%N/A4.8 $25.60
7/15/20227,380,000 shares $220.88 million +1.2%N/A4.7 $29.93
6/30/20227,290,000 shares $217.17 million +6.3%N/A4.5 $29.79
6/15/20226,860,000 shares $189.54 million +15.1%N/A4.2 $27.63
5/31/20225,960,000 shares $177.91 million -10.8%N/A3.7 $29.85
5/15/20226,680,000 shares $179.56 million +6.0%N/A4.3 $26.88
4/30/20226,300,000 shares $181.76 million -13.5%N/A4.1 $28.85
4/15/20227,280,000 shares $213.74 million -14.9%4.6%5.2 $29.36
3/31/20228,550,000 shares $224.95 million -5.3%5.4%6.3 $26.31
3/15/20229,030,000 shares $224.58 million -8.7%5.7%7.5 $24.87
2/28/20229,890,000 shares $245.87 million -15.3%6.2%8.4 $24.86
2/15/202211,680,000 shares $272.26 million +12.5%7.3%9.8 $23.31
1/31/202210,380,000 shares $264.69 million -4.8%6.5%8.7 $25.50
1/15/202210,900,000 shares $275.23 million -16.4%6.8%9.2 $25.25
12/31/202113,040,000 shares $303.31 million +2.4%8.2%11.3 $23.26
12/15/202112,740,000 shares $294.80 million +12.1%8.0%10.9 $23.14
11/30/202111,370,000 shares $249.23 million +0.5%7.1%9.2 $21.92
11/15/202111,310,000 shares $261.94 million -6.5%7.1%8.9 $23.16
10/29/202112,100,000 shares $366.51 million +4.0%7.6%9.3 $30.29
10/15/202111,630,000 shares $368.32 million +7.7%7.3%8.7 $31.67
9/30/202110,800,000 shares $333.07 million +1.5%6.8%7.7 $30.84
9/15/202110,640,000 shares $326.54 million +2.9%6.7%6 $30.69
8/31/202110,340,000 shares $323.23 million -6.4%6.5%5.7 $31.26
8/13/202111,050,000 shares $317.69 million -7.2%6.9%5.7 $28.75
7/30/202111,910,000 shares $308.11 million +0.3%7.5%5.8 $25.87

ALKS Short Interest - Frequently Asked Questions

Short interest is the volume of Alkermes shares that have been sold short but have not yet been closed out or covered. As of June 30th, investors have sold 17,464,944 shares of ALKS short. 10.98% of Alkermes' shares are currently sold short. Learn More on Alkermes' 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. ALKS shares currently have a short interest ratio of 4.8. Learn More on Alkermes'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. 10.98% of Alkermes' floating shares are currently sold short.

Alkermes saw a decline in short interest in June. As of June 30th, there was short interest totaling 17,464,944 shares, a decline of 2.8% from the previous total of 17,962,751 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.

10.98% of Alkermes' shares are currently sold short. Here is how the short interest of companies in the sector of "medical" compare to Alkermes: Abeona Therapeutics Inc. (25.84%), Medpace Holdings, Inc. (9.36%), Omnicell, Inc. (7.20%), AMN Healthcare Services Inc (8.48%), Biogen Inc. (3.89%), Incyte Corporation (6.32%), United Therapeutics Corporation (5.46%), Neurocrine Biosciences, Inc. (5.77%), Exelixis, Inc. (11.66%), Madrigal Pharmaceuticals, Inc. (18.56%),

As of the most recent reporting period, the following stocks had the largest short interest positions: SPDR S&P 500 ETF Trust ($82.01 billion), Invesco QQQ ($47.15 billion), iShares Russell 2000 ETF ($24.07 billion), Nebius Group N.V. ($16.85 billion), Western Digital Corporation ($14.29 billion), SPDR S&P Biotech ETF ($11.89 billion), VanEck Semiconductor ETF ($11.29 billion), KLA Corporation ($10.37 billion), iShares 20+ Year Treasury Bond ETF ($8.78 billion), and Lumentum Holdings Inc. ($8.29 billion). View all of the most shorted stocks.

Short selling ALKS is an investing strategy that aims to generate trading profit from Alkermes as its price is falling. ALKS shares are trading down $1.00 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 Alkermes occurs when it has a large amount of short interest and its stock appreciates in price. This forces short sellers to cover their short interest positions by buying actual shares of ALKS, 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 ALKS, twice per month. The most recent reporting period available is June, 30 2026.

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

  • 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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This page (NASDAQ:ALKS) was last updated on 7/10/2026 by MarketBeat.com Staff.
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