Entry: STT's BA alerted this stock announced positive testing results showing the anti-viral properties of its silicon nitride may be useful in reducing spread of COVID-19. This is a hot sector, big %gainer, and big trading vol at 125 M + shares. So, I bought the dip off its afternoon high. Entered at $2.0049 which is $0.05 off its bottom at $1.95. Exit: I saw a big seller at $2.05, so I sold at $2.04 for a small profit.