Compare stocks with the highest correlated log returns. Anything that's economic should impact the correlated group the same, if it's company specific then that company will stand out.
Most correlated with ADBE (all have > 0.8 correlation) that I see with there price change today are:
ANSS (-0.77%)
INTU (-1.94%)
CRM (-1.73%)
MSFT (-1.77%)
ADSK (-2.61%)
As you can see none of these stocks are experiencing anywhere near the drop today that ADBE is, so you can pretty reasonably explain the drop as company specific.
Most correlated with ADBE (all have > 0.8 correlation) that I see with there price change today are:
ANSS (-0.77%)
INTU (-1.94%)
CRM (-1.73%)
MSFT (-1.77%)
ADSK (-2.61%)
As you can see none of these stocks are experiencing anywhere near the drop today that ADBE is, so you can pretty reasonably explain the drop as company specific.