Calix's Q4 earnings beat is likely to instill confidence among investors, especially given the significant beat on EPS estimates and the year-over-year revenue growth. Historically, however, the stock experienced a drop after the last earnings beat, which may cause some investors to be cautious. The positive earnings report could lead to a short-term uptick in the stock price, but the previous quarter's price drop post-earnings suggests that the market's reaction may be unpredictable.