incorrect. you purchased 20 shares on 9/16/2019 and have sold 15 of them leaving 5 shares
you purchased 5 shares on 10/3/19 and still have them
you purchased 10 shares on 2/6/20 and still have them
for all sales to be LTCG
5 would have to be sold on or after 9/17/2020
5 would have to be sold on or after 10/4/2020
10 would have to be sold on or after 2/7/2021
