It's important when you look at graphs, in both finance and science and engineering, to pay close attention to the scale of both the x and y axis. You'll see that the scale in the chart you posted of Bear Stearns is in years, it shows a period from 1992-2008. As such, the minimum resolution is too low to determine if it did fall by half in a few days. I've attached two graphs that show the actual time period in question, rather than an entire decade and a half:
View attachment 181207
View attachment 181208
So it looks like for a month it traded in the $80 range and not until the very last day did it drop to what would hit your new moving goalpost trigger of not $5 per share but 50%. Could you have pulled all your funds out that Friday? Unless they were all in cash, no, because you wouldn't have had time for your closing transactions to clear. Not to mention you'd have to make sure you weren't on vacation or otherwise occupied. And the fact that it's only human to delay when facing an actual situation, hindsight is always 20/20 especially for armchair warriors.
Listen, it's simply a fact that not every bankruptcy is telegraphed by a low stock price in sufficient time for you to do something about it. That's called counterparty risk, it's present with every counterparty, and it's what finance professionals deal with every day. To deny the presence of counterparty risk is hopelessly naive, to double and triple down on that denial is....just some pathological need to always be right I guess. It's clear you haven't lived through unexpected bankruptcies as a trader, many people on this board have. It's clear you have very little background in finance, many people on this board do. If you want to step on your own dick by ignoring that as well as the actual examples presented, be our guest, the only one in pain will be you. However there are lots of people who, unlike you, look to posts on this board to learn something, I certainly do. For us it's important that incorrect information that can get you in trouble is discounted for what it is. The incorrect assertion that financial troubles in a company are always telegraphed in the stock price is a prime example of the kind of incorrect information that can get one in trouble, so hopefully we've put that incorrect assertion to bed.