I am awestruck by OIH. It seems to have no upper limit. Ugh.
The one bright spot today as been ISRG. This stock had a huge run-up over the years.
As of today, it's taking a wallop. This could be the start of a fundamentally major downturn for this stock, but for me, I'm happy taking my profits, since this stock has, in a single day, been pushed all the way back to this medium-term trendline.
As for OIH, I'm going to embrace my inner idiot and simply hold on tight.