Hi Ray, In the context of what you have observed it seems like what you are suggesting might be the best option. If the position is that volatile over time then it would make sense but if it was a one time fluke, maybe not.
Probably the best thing to do is look at history and see how many times that much of a swing (or near it) has happened in the past and if there is any correlation to the market as a whole. Rarely do things happen totally out of context. But, like anything else, there are exceptions that happen. Security breaches, tsunamis, earthquakes, and such, that can not be predicted. Was the stock responding to one of those in past tumbles?
What stock was it?
Happy New Year to you and the rest of the gang,
Allen