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How to sell a stock in a crashing market?
Assuming you are referring to macro corrections and crashes (as opposed to technical crashes like the "flash crash") -- It is certainly possible to sell stocks during a market drop -- by definition, the market is dropping not only because there are a larger number of sellers, but more importantly because there are a large number of transactions that are driving prices down. In fact, volumes are strongly correlated with volatility, so volumes are actually higher when the market is going down dramatically -- you can verify this on Yahoo or Google Finance (pick a liquid stock like SPY and look at 2008 vs recent years). That doesn't say anything about the kind of selling that occurs though. With respect to your question "Whats the best strategy for selling stocks during a drop?", it really depends on your objective. You can generally always sell at some price. That price will be worse during market crashes. Beyond the obvious fact that prices are declining, spreads in the market will be wider due to heightened volatility. Many people are forced to sell during crashes due to external and / or psychological pressures -- and sometimes selling is the right thing to do -- but the best strategy for long-term investors is often to just hold on.