ShortInterestHistory.com

OTLK Short Interest History

OTLK Short Interest (May 29, 2026 Update)
Short interest for OTLK was 16.1M as of May 29, 2026, +77.5% from the prior report.
This page tracks OTLK short interest over time, including historical values, changes between reports, and days to cover.

Outlook Therapeutics, Inc. Com | OTLK | Nasdaq | Latest report: May 29, 2026

Current Short Interest16.1M
Prior Short Interest9.1M
Change Shares7.0M
Change %+77.5%
Average Daily Volume65.5M
Days to Cover1

At the latest settlement date of May 29, 2026, Outlook Therapeutics, Inc. Com (OTLK) showed reported short interest of 16,133,268 shares. That compared with 9,088,387 shares in the prior report, a change of 7.0M shares, or +77.5%. The latest reported days to cover was 1, based on average daily volume of 65.5M.

The historical data currently tracked for OTLK includes 117 reported entries from June 15, 2021 to May 29, 2026. Over that span, reported short interest has ranged from 785.3K to 32.0M shares.

Short Interest Over Time

Days to Cover Over Time

Extreme edge-case readings may reflect unusually low reported average volume.

Short Interest History for OTLK

Settlement DateShort InterestPrior Short InterestChange SharesChange %Average Daily VolumeDays to Cover
May 29, 202616,133,2689,088,3877.0M+77.5%65.5M1
May 15, 20269,088,3876,433,8132.7M+41.3%4.2M2.19
April 30, 20266,433,8134,686,2251.7M+37.3%5.3M1.2
April 15, 20264,686,2253,180,4461.5M+47.3%4.6M1.02
March 31, 20263,180,4463,181,601-1.2K-0.0%4.7M1
March 13, 20263,181,6013,692,559-511.0K-13.8%1.0M3.05
February 27, 20263,692,5594,499,122-806.6K-17.9%998.3K3.7
February 13, 20264,499,1224,553,143-54.0K-1.2%1.6M2.83
January 30, 20264,553,1434,843,122-290.0K-6.0%2.2M2.03
January 15, 20264,843,1229,076,552-4.2M-46.6%19.0M1
December 31, 20259,076,5523,082,8496.0M+194.4%7.4M1.22
December 15, 20253,082,8493,350,485-267.6K-8.0%2.3M1.32
November 28, 20253,350,4854,060,839-710.4K-17.5%4.3M1
November 14, 20254,060,8392,398,0891.7M+69.3%6.0M1
October 31, 20252,398,0892,168,058230.0K+10.6%1.1M2.18
October 15, 20252,168,0584,436,035-2.3M-51.1%2.3M1
September 15, 20255,354,5936,807,948-1.5M-21.3%4.2M1.29
August 29, 20256,807,9482,915,3383.9M+133.5%12.3M1
August 15, 20252,915,3382,349,479565.9K+24.1%1.4M2.07
July 31, 20252,349,4792,023,374326.1K+16.1%808.3K2.91
July 15, 20252,023,3742,190,871-167.5K-7.6%956.2K2.12
June 30, 20252,190,8712,739,054-548.2K-20.0%853.9K2.57
June 13, 20252,739,0543,219,504-480.4K-14.9%836.2K3.28
May 30, 20253,219,5043,153,04766.5K+2.1%860.8K3.74
May 15, 20253,153,0473,582,430-429.4K-12.0%490.6K6.43
April 30, 20253,582,4303,996,180-413.8K-10.4%276.6K12.95
April 15, 20253,996,1803,751,817244.4K+6.5%401.2K9.96
March 31, 20253,751,8173,926,857-175.0K-4.5%437.2K8.58
February 28, 20253,499,9473,526,317-26.4K-0.7%591.6K5.92
February 14, 20253,526,3173,111,799414.5K+13.3%665.3K5.3
January 31, 20253,111,7993,160,455-48.7K-1.5%944.6K3.29
January 15, 20253,160,4552,890,601269.9K+9.3%998.9K3.16
December 31, 20242,890,6013,506,851-616.2K-17.6%1.2M2.34
December 13, 20243,506,8514,132,323-625.5K-15.1%1.8M1.99
November 29, 20244,132,3233,398,949733.4K+21.6%8.0M1
November 15, 20243,398,9493,228,369170.6K+5.3%285.4K11.91
October 31, 20243,228,3692,989,293239.1K+8.0%312.7K10.32
October 15, 20242,989,2932,947,92741.4K+1.4%207.9K14.38
September 30, 20242,947,9272,468,158479.8K+19.4%325.9K9.05
September 13, 20242,468,1582,425,36642.8K+1.8%301.7K8.18
August 30, 20242,425,3662,428,160-2.8K-0.1%136.4K17.78
August 15, 20242,428,1602,321,399106.8K+4.6%154.6K15.7
July 31, 20242,321,3992,143,240178.2K+8.3%191.8K12.1
July 15, 20242,143,2401,954,316188.9K+9.7%198.8K10.78
June 28, 20241,954,3161,654,297300.0K+18.1%309.4K6.32
June 14, 20241,654,2971,663,753-9.5K-0.6%181.3K9.12
May 31, 20241,663,7531,331,271332.5K+25.0%280.5K5.93
May 15, 20241,331,2711,258,61972.7K+5.8%266.2K5
April 30, 20241,258,6191,129,694128.9K+11.4%216.6K5.81
April 15, 20241,129,6941,325,524-195.8K-14.8%545.6K2.07
March 28, 20241,325,524785,303540.2K+68.8%2.9M1
March 15, 2024785,30311,642,593-10.9M-93.3%332.4K2.36
February 29, 202411,642,59313,198,444-1.6M-11.8%1.2M9.76
February 15, 202413,198,44413,568,305-369.9K-2.7%1.7M7.58
January 31, 202413,568,30512,127,3011.4M+11.9%3.8M3.6
December 29, 202311,306,58710,952,151354.4K+3.2%2.5M4.55
December 15, 202310,952,15116,126,031-5.2M-32.1%1.2M8.84
November 30, 202316,126,03120,537,689-4.4M-21.5%1.8M9.18
November 15, 202320,537,68932,034,765-11.5M-35.9%10.6M1.94
October 31, 202332,034,76529,267,3692.8M+9.5%20.0M1.6
October 13, 202329,267,36926,715,6022.6M+9.6%4.6M6.42
September 29, 202326,715,60225,851,027864.6K+3.3%3.0M8.87
September 15, 202325,851,02726,662,876-811.8K-3.0%8.3M3.11
August 31, 202326,662,87617,510,2219.2M+52.3%18.2M1.47
August 15, 202317,510,22116,701,363808.9K+4.8%1.0M17.05
July 31, 202316,701,36316,405,222296.1K+1.8%1.1M14.79
July 14, 202316,405,22216,765,669-360.4K-2.1%1.1M15.22
June 30, 202316,765,66917,095,072-329.4K-1.9%1.5M11.5
June 15, 202317,095,07216,456,398638.7K+3.9%2.0M8.4
May 31, 202316,456,39816,371,14885.2K+0.5%1.3M13.1
May 15, 202316,371,14816,888,787-517.6K-3.1%605.6K27.03
April 28, 202316,888,78716,794,03994.7K+0.6%631.1K26.76
April 14, 202316,794,03916,425,576368.5K+2.2%388.9K43.19
March 31, 202316,425,57615,490,140935.4K+6.0%689.1K23.84
March 15, 202315,490,14015,045,226444.9K+3.0%611.7K25.32
February 28, 202315,045,22615,274,471-229.2K-1.5%511.2K29.43
February 15, 202315,274,56615,725,087-450.5K-2.9%595.6K25.64
January 31, 202315,725,08715,151,196573.9K+3.8%593.3K26.5
January 13, 202315,151,19616,020,901-869.7K-5.4%517.3K29.29
December 30, 202216,020,90115,957,84963.1K+0.4%648.4K24.71
December 15, 202215,957,84916,132,591-174.7K-1.1%411.1K38.82
November 30, 202216,132,59116,398,515-265.9K-1.6%266.3K60.59
November 15, 202216,398,51515,933,426465.1K+2.9%418.4K39.2
October 31, 202215,933,42615,383,216550.2K+3.6%571.1K27.9
October 14, 202215,383,21614,421,675961.5K+6.7%468.5K32.84
September 30, 202214,421,67513,655,584766.1K+5.6%592.6K24.34
September 15, 202213,655,58412,511,7501.1M+9.1%459.0K29.75
August 31, 202212,511,75012,187,970323.8K+2.7%347.2K36.03
August 15, 202212,187,97012,279,374-91.4K-0.7%495.4K24.6
July 29, 202212,279,37411,809,833469.5K+4.0%410.3K29.93
July 15, 202211,809,83311,168,626641.2K+5.7%561.5K21.03
June 30, 202211,168,62610,665,492503.1K+4.7%493.5K22.63
June 15, 202210,665,49211,639,322-973.8K-8.4%998.4K10.68
May 31, 202211,639,32211,173,940465.4K+4.2%2.4M4.83
May 13, 202211,173,94010,682,290491.6K+4.6%820.3K13.62
April 29, 202210,682,29010,584,98197.3K+0.9%647.1K16.51
April 14, 202210,584,9819,680,150904.8K+9.3%1.1M9.25
March 31, 20229,680,1506,500,5193.2M+48.9%2.1M4.64
March 15, 20226,500,5195,991,992508.5K+8.5%1.3M4.96
February 28, 20225,991,9925,479,315512.7K+9.4%1.6M3.84
February 15, 20225,479,3155,302,830176.5K+3.3%866.9K6.32
January 31, 20225,302,8304,236,8001.1M+25.2%1.9M2.73
January 14, 20224,236,8004,322,152-85.4K-2.0%1.1M3.7
December 31, 20214,322,1524,279,82442.3K+1.0%981.3K4.4
December 15, 20214,279,8243,683,518596.3K+16.2%1.7M2.49
November 30, 20213,683,5186,302,966-2.6M-41.6%3.4M1.07
November 15, 20216,302,9666,391,505-88.5K-1.4%766.7K8.22
October 29, 20216,391,5055,881,872509.6K+8.7%801.3K7.98
October 15, 20215,881,8726,094,809-212.9K-3.5%584.2K10.07
September 30, 20216,094,8095,634,542460.3K+8.2%958.7K6.36
September 15, 20215,634,5425,655,919-21.4K-0.4%714.3K7.89
August 31, 20215,655,9195,582,07273.8K+1.3%1.4M3.97
August 13, 20215,582,0723,249,1502.3M+71.8%14.4M1
July 30, 20213,249,1503,145,394103.8K+3.3%514.9K6.31
July 15, 20213,145,3944,213,875-1.1M-25.4%749.3K4.2
June 30, 20214,213,8751,341,5062.9M+214.1%1.7M2.49
June 15, 20211,341,5061,264,79676.7K+6.1%804.9K1.67

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