If MRK falls below the support level indicated by the white horizontal line I think it will continue to fall lower.
Analysis based on rising above or falling below trend lines (green bullish) (red bearish)
The purple line represents the general trend, while the horizontal red line is a potential stop; if it breaks below.
If it forms a head and shoulder that is bearish, if it makes a new high find a good price on way down as the new high is bullish
Im bullish on IMV, but I always consider the opposite view theses are the moves I hypothesize the stock can move.