The shares have since recovered and closed yesterday at $34.60.
But the shares recovered, closing at 61.93, down 69 cents.
Since then the shares have recovered somewhat and closed yesterday at $23.875, up 37.5 cents.
On the other hand, he found that the shares more than recovered (1.8 per cent) during the following month.
And there seemed to be little prospect the shares would recover on their own in the near term.
Boston Scientific says its share has now recovered to at least 60 percent of the market.
Unfortunately this was not the bottom and the shares slid below 400p, but have since recovered.
The shares recovered somewhat, but still ended down almost 15 percent.
But the shares recovered somewhat and closed at $27.55, down 25 cents a share.
But in the last few moments, the shares have just recovered almost all their losses to 690p.