Normally, the stock will drop the equal amount of the special dividend right at the next day after dividend paying out. But my theory is that SCVL and SYNT's cash value had been ignored at current price to begin with. So I am betting that these stocks wouldn't stay at dividend-penalized level for long.
P.S. Actually saving $1.5 bucks to buy SCVL today than yesterday. The stock actually fell $0.5 after dividend annoucement. #$%$.