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
04/14/2022 11,847,252 9.42 2,237,998 5.29
03/31/2022 10,827,323 (12.06) 3,649,517 2.97
03/15/2022 12,311,571 (0.30) 1,906,303 6.46
02/28/2022 12,349,200 22.93 2,863,719 4.31
02/15/2022 10,045,718 21.13 2,854,210 3.52
01/31/2022 8,293,234 210.96 3,009,954 2.76
01/14/2022 2,666,956 3.72 1,409,031 1.89
12/31/2021 2,571,337 40.72 1,677,546 1.53
12/15/2021 1,827,328 12.81 2,007,724 1.00
11/30/2021 1,619,794 (4.62) 2,414,079 1.00
11/15/2021 1,698,295 100.00 3,281,688 1.00