As of minutes ago, BAC stock hit the nearly 3 year low value of $5.01 which immediately set off algorithmic defense programs, because as has been explained previously, should the stock trade under $5.00 during regular hours, instead of the After Hours session, when it hit $4.90 a few weeks ago, it will most likely set off numerous selling programs from plain vanilla funds which despite what pundits claims, have a hard floor of $5.00 (these are the same "pundits" who believe a downgrade of the EuropeAAAn club will have no impact on asset vallue) for held stocks.The result would be unpredictable so it is better to eat losses on algo all bid programs than to find out what would happen when the stock has $4 handle.
As a reminder, here are the 20 biggest losers should BAC enter freefall mode:
Source: CapitalIQ