My understanding of your saying is the market force making the changing gap! Well, suppose a very efficient market it appears, however, I also noticed last Friday both SNAS and LNAS both had 15.xx% changes which sounds right to me. Why not last Friday and why today?
There is a divergence in 15M and 30M level for MACD, RSI, CCI etc, so you are right it will go down soon. How much will it go down is another big question.