Down due to slow growth, Procept IPO, tax loss selling, or..
1) As the Q3 report would seem to have triggered this sell-off it makes sense to blame the slower than projected growth in installed base, and corresponding slow revenue growth (that Profound blames on COVID of course).
2) The Procept Biorobotics IPO was mentioned in the Q3 Financial Results conference call. More competition could be hurting the share price though the Porocept IPO was back on June 30th and you might think would already be factored in.
3) If tax loss sellers were looking for an opportunity to sell low, today looks good for that.
Please feel free to add your own reasons for the share price drop and/or refute mine. -TIA