ShortInterestHistory.com

ARCT Short Interest History

ARCT Short Interest (May 29, 2026 Update)
Short interest for ARCT was 6.7M as of May 29, 2026, +2.3% from the prior report.
This page tracks ARCT short interest over time, including historical values, changes between reports, and days to cover.

Arcturus Therapeutics Holdings | ARCT | Nasdaq | Latest report: May 29, 2026

Current Short Interest6.7M
Prior Short Interest6.6M
Change Shares153.5K
Change %+2.3%
Average Daily Volume410.7K
Days to Cover16.38

At the latest settlement date of May 29, 2026, Arcturus Therapeutics Holdings (ARCT) showed reported short interest of 6,728,068 shares. That compared with 6,574,536 shares in the prior report, a change of 153.5K shares, or +2.3%. The latest reported days to cover was 16.38, based on average daily volume of 410.7K.

The historical data currently tracked for ARCT includes 117 reported entries from June 15, 2021 to May 29, 2026. Over that span, reported short interest has ranged from 1.7M to 9.2M 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 ARCT

Settlement DateShort InterestPrior Short InterestChange SharesChange %Average Daily VolumeDays to Cover
May 29, 20266,728,0686,574,536153.5K+2.3%410.7K16.38
May 15, 20266,574,5366,441,740132.8K+2.1%495.6K13.27
April 30, 20266,441,7406,251,989189.8K+3.0%319.5K20.16
April 15, 20266,251,9896,450,517-198.5K-3.1%436.2K14.33
March 31, 20266,450,5175,938,449512.1K+8.6%583.7K11.05
March 13, 20265,938,4496,081,175-142.7K-2.4%550.1K10.8
February 27, 20266,081,1756,574,077-492.9K-7.5%347.3K17.51
February 13, 20266,574,0776,882,188-308.1K-4.5%441.0K14.91
January 30, 20266,882,1887,188,672-306.5K-4.3%423.0K16.27
January 15, 20267,188,6727,159,49529.2K+0.4%571.0K12.59
December 31, 20257,159,4957,706,521-547.0K-7.1%622.4K11.5
December 15, 20257,706,5217,810,428-103.9K-1.3%783.3K9.84
November 28, 20257,810,4289,210,027-1.4M-15.2%947.1K8.25
November 14, 20259,210,0276,948,5482.3M+32.5%1.0M9.14
October 31, 20256,948,5485,310,3051.6M+30.9%3.0M2.32
October 15, 20255,310,3055,143,436166.9K+3.2%1.0M5.11
September 15, 20255,947,4085,408,973538.4K+10.0%467.4K12.72
August 29, 20255,408,9735,144,057264.9K+5.1%563.7K9.6
August 15, 20255,144,0574,371,328772.7K+17.7%865.1K5.95
July 31, 20254,371,3284,481,461-110.1K-2.5%370.3K11.81
July 15, 20254,481,4615,039,101-557.6K-11.1%438.8K10.21
June 30, 20255,039,1014,965,29073.8K+1.5%525.5K9.59
June 13, 20254,965,2905,504,454-539.2K-9.8%493.7K10.06
May 30, 20255,504,4545,413,85390.6K+1.7%428.6K12.84
May 15, 20255,413,8535,136,524277.3K+5.4%457.9K11.82
April 30, 20255,136,5245,071,69864.8K+1.3%362.3K14.18
April 15, 20255,071,6984,647,257424.4K+9.1%535.6K9.47
March 31, 20254,647,2574,410,136237.1K+5.4%354.3K13.12
February 28, 20254,189,9004,228,550-38.6K-0.9%420.6K9.96
February 14, 20254,228,5504,543,226-314.7K-6.9%426.4K9.92
January 31, 20254,543,2265,044,012-500.8K-9.9%383.6K11.84
January 15, 20255,044,0124,818,247225.8K+4.7%425.6K11.85
December 31, 20244,818,2474,442,353375.9K+8.5%408.3K11.8
December 13, 20244,442,3534,368,94073.4K+1.7%355.5K12.5
November 29, 20244,368,9404,484,383-115.4K-2.6%470.1K9.29
November 15, 20244,484,3834,580,249-95.9K-2.1%504.3K8.89
October 31, 20244,580,2494,434,106146.1K+3.3%273.1K16.77
October 15, 20244,434,1064,596,273-162.2K-3.5%331.4K13.38
September 30, 20244,596,2735,225,599-629.3K-12.0%386.2K11.9
September 13, 20245,225,5995,382,076-156.5K-2.9%402.1K13
August 30, 20245,382,0765,455,552-73.5K-1.3%300.7K17.9
August 15, 20245,455,5525,356,61198.9K+1.8%466.4K11.7
July 31, 20245,356,6115,211,849144.8K+2.8%362.5K14.78
July 15, 20245,211,8494,681,275530.6K+11.3%641.0K8.13
June 28, 20244,681,2754,382,378298.9K+6.8%900.2K5.2
June 14, 20244,382,3784,113,220269.2K+6.5%742.8K5.9
May 31, 20244,113,2204,128,904-15.7K-0.4%488.7K8.42
May 15, 20244,128,9044,916,314-787.4K-16.0%527.4K7.83
April 30, 20244,916,3144,613,132303.2K+6.6%436.3K11.27
April 15, 20244,613,1324,810,059-196.9K-4.1%506.9K9.1
March 28, 20244,810,0594,205,886604.2K+14.4%583.2K8.25
March 15, 20244,205,8864,219,247-13.4K-0.3%553.1K7.6
February 29, 20244,219,2474,520,530-301.3K-6.7%430.2K9.81
February 15, 20244,520,5304,368,776151.8K+3.5%415.3K10.88
January 31, 20244,368,7764,147,548221.2K+5.3%319.1K13.69
December 29, 20234,126,6204,430,838-304.2K-6.9%392.0K10.53
December 15, 20234,430,8385,429,560-998.7K-18.4%482.1K9.19
November 30, 20235,429,5605,065,118364.4K+7.2%436.6K12.44
November 15, 20235,065,1184,987,47077.6K+1.6%545.2K9.29
October 31, 20234,987,4704,793,207194.3K+4.1%308.5K16.17
October 13, 20234,793,2074,605,988187.2K+4.1%265.6K18.05
September 29, 20234,605,9884,193,362412.6K+9.8%362.1K12.72
September 15, 20234,193,3623,934,818258.5K+6.6%425.9K9.85
August 31, 20233,934,8183,920,61614.2K+0.4%360.2K10.92
August 15, 20233,920,6163,838,47282.1K+2.1%578.8K6.77
July 31, 20233,838,4723,627,639210.8K+5.8%430.5K8.92
July 14, 20233,627,6393,329,320298.3K+9.0%495.5K7.32
June 30, 20233,329,3203,615,912-286.6K-7.9%509.7K6.53
June 15, 20233,615,9123,612,6313.3K+0.1%275.9K13.1
May 31, 20233,612,6313,320,375292.3K+8.8%366.7K9.85
May 15, 20233,320,3753,142,452177.9K+5.7%518.3K6.41
April 28, 20233,142,4522,813,127329.3K+11.7%416.0K7.55
April 14, 20232,813,1272,653,243159.9K+6.0%632.2K4.45
March 31, 20232,653,2432,540,984112.3K+4.4%819.8K3.24
March 15, 20232,540,9842,344,716196.3K+8.4%309.4K8.21
February 28, 20232,344,7162,228,555116.2K+5.2%347.2K6.75
February 15, 20232,228,5551,833,459395.1K+21.5%355.4K6.27
January 31, 20231,833,4591,665,307168.2K+10.1%285.6K6.42
January 13, 20231,665,3071,901,423-236.1K-12.4%419.8K3.97
December 30, 20221,901,4232,627,684-726.3K-27.6%524.1K3.63
December 15, 20222,627,6842,841,368-213.7K-7.5%547.2K4.8
November 30, 20222,841,3682,603,248238.1K+9.1%402.3K7.06
November 15, 20222,603,2482,885,424-282.2K-9.8%1.1M2.39
October 31, 20222,885,4242,636,798248.6K+9.4%461.4K6.25
October 14, 20222,636,7982,490,032146.8K+5.9%384.5K6.86
September 30, 20222,490,0322,274,446215.6K+9.5%459.7K5.42
September 15, 20222,274,4462,243,18931.3K+1.4%458.4K4.96
August 31, 20222,243,1892,609,650-366.5K-14.0%381.5K5.88
August 15, 20222,609,6502,828,225-218.6K-7.7%530.8K4.92
July 29, 20222,828,2252,886,369-58.1K-2.0%374.5K7.55
July 15, 20222,886,3692,965,790-79.4K-2.7%472.7K6.11
June 30, 20222,965,7903,378,837-413.0K-12.2%1.0M2.95
June 15, 20223,378,8373,336,47442.4K+1.3%652.4K5.18
May 31, 20223,336,4743,090,342246.1K+8.0%604.2K5.52
May 13, 20223,090,3423,052,18338.2K+1.3%731.7K4.22
April 29, 20223,052,1832,456,473595.7K+24.3%1.1M2.74
April 14, 20222,456,4732,593,721-137.2K-5.3%416.8K5.89
March 31, 20222,593,7212,361,242232.5K+9.8%663.2K3.91
March 15, 20222,361,2422,467,055-105.8K-4.3%479.3K4.93
February 28, 20222,467,0552,587,748-120.7K-4.7%411.3K6
February 15, 20222,587,7482,641,747-54.0K-2.0%431.7K5.99
January 31, 20222,641,7472,253,511388.2K+17.2%699.6K3.78
January 14, 20222,253,5112,352,777-99.3K-4.2%389.5K5.79
December 31, 20212,352,7772,116,966235.8K+11.1%935.6K2.51
December 15, 20212,116,9662,496,192-379.2K-15.2%537.9K3.94
November 30, 20212,496,1922,230,091266.1K+11.9%563.8K4.43
November 15, 20212,230,0912,027,120203.0K+10.0%688.7K3.24
October 29, 20212,027,1201,880,076147.0K+7.8%340.9K5.95
October 15, 20211,880,0761,925,097-45.0K-2.3%434.4K4.33
September 30, 20211,925,0972,101,775-176.7K-8.4%412.1K4.67
September 15, 20212,101,7752,460,541-358.8K-14.6%466.5K4.51
August 31, 20212,460,5412,255,028205.5K+9.1%594.8K4.14
August 13, 20212,255,0283,680,085-1.4M-38.7%3.0M1
July 30, 20213,680,0853,740,137-60.1K-1.6%325.4K11.31
July 15, 20213,740,1374,004,380-264.2K-6.6%467.6K8
June 30, 20214,004,3804,361,034-356.7K-8.2%609.2K6.57
June 15, 20214,361,0345,009,649-648.6K-12.9%445.3K9.79

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