Offer your thoughts or opinion on the input financial query or topic using your financial background.

A stock just dropped 8% in minutes and now all of a sudden the only way to buy is on the ask, what does this mean?
You have to look at stocks just like you would look at smaller and more illiquid markets. Stock trade in auction markets. These are analogous to ebay or craigslist, just with more transparency and liquidity. There is no guarantee that a market will form for a particular stock, or that it will sustain.  When a stock sells off, and there are no bids left, that means all of the existing bidder's limit orders got filled because someone sold at those prices. There is nothing fishy about that. It is likely that someone else wants to sell even more, but couldn't find any more bidders. If you put a bid you would likely get filled by the shareholder with a massive position looking for liquidity. You could also buy at the ask.