| DATE | Merck | undefined |
|---|---|---|
May 2014 | $38.07 | $21.18 |
April 2014 | $39.55 | $21.01 |
March 2014 | $38.34 | $21.19 |
February 2014 | $38.19 | $21.56 |
January 2014 | $35.50 | $20.31 |
December 2013 | $33.54 | $20.01 |
November 2013 | $33.09 | $19.88 |
October 2013 | $29.94 | $19.00 |
September 2013 | $31.62 | $18.31 |
August 2013 | $31.12 | $17.75 |
July 2013 | $31.70 | $18.39 |
June 2013 | $30.57 | $17.11 |
May 2013 | $30.46 | $17.23 |
April 2013 | $30.65 | $16.96 |
March 2013 | $28.83 | $16.41 |
February 2013 | $27.60 | $15.43 |
January 2013 | $27.94 | $15.23 |
December 2012 | $26.44 | $14.17 |
November 2012 | $28.34 | $14.22 |
October 2012 | $29.19 | $14.10 |
September 2012 | $28.86 | $14.29 |
August 2012 | $27.28 | $13.73 |
July 2012 | $27.99 | $13.51 |
June 2012 | $26.46 | $13.37 |
May 2012 | $23.56 | $12.63 |
