• MERCK & CO INC Average Monthly Returns

Some investors consider seasonal performance when purchasing or selling stocks. This chart illustrates the average monthly return for the past 5 years. Users often also consider the number of times a stock increases or decreases for any given month. Mouse-over the chart to view 5 years of history for each month.

  • Seasonality Performance Chart: MRK

  • Seasonal Performance Data: MRK

    Returns Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Avg.

    Returns %    		 -3.88 2.01 -3.83 5.09 -0.51 -0.70 -0.42 -3.43 -4.65 1.41 -2.92 6.51
    #Times MRK Stock Price Increased 48 45 56 57 55 52 46 57 50 59 54 58
    #Times MRK Stock Price Unchanged 0 1 2 0 1 1 2 1 0 4 2 1
    #Times MRK Stock Price Decreased 53 50 52 46 50 54 56 54 52 47 47 46
    2008 % -20.85 -3.66 -14.28 0.18 2.42 -3.25 — — — — — —
    2007 % 2.64 -1.33 0.05 16.46 1.96 -5.04 -0.29 1.05 3.03 12.71 1.89 -2.10
    2006 % 8.46 1.04 1.06 -2.29 -3.27 9.43 10.54 0.70 3.33 8.40 -1.99 -2.03
    2005 % -12.72 13.01 2.11 4.73 -4.30 -5.05 0.84 -9.10 -3.60 3.64 4.26 8.20
    2004 % 3.05 1.01 -8.08 6.36 0.64 0.42 -4.52 -0.83 -26.61 -5.11 -10.50 14.70
    2003 % — — — — — — -8.69 -8.96 0.60 -12.57 -8.24 13.77