Looks like some Canadian warrant holders not taking any chances and beginning to sell now just as POET did not wait a little longer to reprice warrants at a higher level. There are never any guarantees so some want to eliminate any chances being out of the money i guess. One good thing if so,  money soon in POET coffers has Kevin explained. RTV has the better strategy given all that we know is coming as it wont cost him as much. On the flip side could be simply opportunitic traders sensing weakness. 

Todays trading kinda spells it out,  right after NR approving repricing,,,its likely warrant holders initiating selling given Canadian trading at 2 to 1 versus Nasdaq if you include trades via ATS. The patterns lately has been quite even or even higher on US side.