Aside from some timeline dilation, which creates risk, I think this is a mass exit due to people who wanted to be millionaires by Labor Day and are a bit miffed that it's not that easy.
FNMFN touched 50% of par in 2019 after getting as low as 20% of par in 2018 and is holding at roughly 36% of par as of the time I type this. I am ignoring anything that's not $0 or $50+.
Commons are obviously far more complex of a problem. I'm in both but stopped thinking about commons for now, I need something very concrete like "warrants cancelled" or "warrants executed" to really triangulate on any sort of final number.