See that's what I think you are missing. That really is NOT the legal issue as I see it. I addressed forseeability (and your example) in my prior post, so I won't bother repeating it. The real issue here, though, is materiality. The question of materiality asks whether the information would be "viewed by the reasonable investor as having significantly altered the 'total mix' of information made available" when making an investment decision.
Huh? I am absolutely serious about that. So you think a subjective standard applies to the issue of reasonableness or reasonable forseeability? I am quite confident that is not true. An objective standard, I might add, also applies to the question of materiality.