"If you could short every series A or B company, you'd make a killing doing so." That's not really how shorting works. You'd have to find someone willing to le

"If you could short every series A or B company, you'd make a killing doing so." That's not really how shorting works. You'd have to find someone willing to let you sell their shares, you'd have to incentivize them to do so, you'd have to find a willing buyer, and you'd have almost unlimited loss potential.