This drop is being caused by Naked Shorting of SWHC, lack of volume is one reason.
Naked shorting is against the SEC Rules but very hard to stop, sooner or later the Naked Shorts need to come up with the cash, "a pop in the Dow would help" that's when you will see a huge "Short Squeeze" to the upside, so don't panic, and hold your ground folks.. A SHORT SQUEEZE IS ON IT'S WAY SOON.
Also people that are on "Margins" are being forced to sell there stocks "even there good ones they hold on Margin Accts" because the dow has droped so much since the elections they are now having "Margin Calls" by there brokers, to pay the money they owe on buys made "good or bad" it don't mater..FYI
A Magin Call is when you need to pay back money for stocks you bought on a loan, that went down in value, so you need to even sell the good stocks you may own to pay back the money on the stocks that lost "went down" that you may also own. NEVER PLAY ON MARGIN "you can see why"