Historic short interest:
You can go to this link to check short interest in a stock:
http://nasdaqtrader.com/Trader.aspx?id=ShortInterest
Publication schedule is here:
http://nasdaqtrader.com/Trader.aspx?id=ShortIntPubSch
Settlement Date/ Short Interest/ Percent Change/
Average Daily Share Volume/ Days to Cover
03/31/2021 32,239,203 (6.53) 35,843,888 1.00
03/15/2021 34,492,178 (4.71) 6,533,895 5.28
02/26/2021 36,195,328 9.61 8,531,539 4.24
02/12/2021 33,023,032 (8.49) 9,169,109 3.60
01/29/2021 36,085,294 (0.08) 12,480,380 2.89
01/15/2021 36,115,964 (1.58) 4,529,182 7.97
12/31/2020 36,694,330 18.72 5,772,617 6.36
12/15/2020 30,907,481 (8.12) 4,371,629 7.07
11/30/2020 33,640,719 (14.87) 3,790,804 8.87
11/13/2020 39,517,472 (2.80) 5,436,036 7.27
10/30/2020 40,653,967 3.19 2,920,624 13.92
10/15/2020 39,395,343 0.59 3,566,878 11.04
09/30/2020 39,165,763 3.28 4,839,373 8.09
09/15/2020 37,921,616 3.70 4,966,590 7.64
08/31/2020 36,567,733 1.28 5,361,011 6.82
08/14/2020 36,106,607 6.45 4,612,817 7.83
07/31/2020 33,917,252 3.87 3,254,863 10.42
07/15/2020 32,653,635 7.96 3,147,715 10.37
06/30/2020 30,244,846 16.05 4,440,585 6.81
06/15/2020 26,061,751 (4.32) 4,444,238 5.86
05/29/2020 27,239,015 2.76 10,723,636 2.54
05/15/2020 26,507,994 23.82 8,097,608 3.27
04/30/2020 21,408,484 (8.34) 5,552,583 3.86
04/15/2020 23,356,262 (7.02) 3,908,466 5.98
03/31/2020 25,118,416 (2.07) 8,103,375 3.10
03/13/2020 25,648,785 7.73 5,206,303 4.93
02/28/2020 23,809,064 (7.08) 8,945,089 2.66
02/14/2020 25,622,422 (0.08) 5,286,567 4.85
01/31/2020 25,642,035 25.93 7,272,759 3.53
01/15/2020 20,362,771 (24.28) 6,731,086 3.03
12/31/2019 26,890,498 0.13 5,435,540 4.95
12/13/2019 26,855,728 (2.10) 17,911,481 1.50
11/29/2019 27,431,603 1.85 16,550,496 1.66
11/15/2019 26,932,138 22.53 12,804,991 2.10
10/31/2019 21,979,837 2.21 3,916,605 5.61
10/15/2019 21,503,874 3.58 3,126,971 6.88
09/30/2019 20,761,101 (6.58) 4,819,292 4.31
09/13/2019 22,223,363 6.11 3,109,896 7.15
08/30/2019 20,943,066 19.86 3,063,310 6.84
08/15/2019 17,473,086 82.03 6,821,417 2.56
07/31/2019 9,599,270 (14.21) 2,124,097 4.52
07/15/2019 11,189,700 7.35 1,579,277 7.0
