MRK - Merck and Company, Inc.

All calculations assume all dividends are reinvested to purchase additional shares. Taxes and commissions are not factored into calculations. Data is property of 1stock1 and written permission must be granted before redistributing any data (in part or in whole).

*In August 2003, Medco Health Solutions was spun off Merck Company.

1975 Investment: Additional $72,021.91 in Medco Health not included in total value.
1980 Investment: Additional $60,320.44 in Medco Health not included in total value.
1985 Investment: Additional $38,831.18 in Medco Health not included in total value.
1990 Investment: Additional $6,837.73 in Medco Health not included in total value.
1995 Investment: Additional $4,118.83 in Medco Health not included in total value.
2000 Investment: Additional $1,057.85 in Medco Health not included in total value.

Amount Invested	Date	# of Shares Purchased	# of Shares on 12-31-11	Stock Price on 12-31-11	Total Value on 12-31-11
$5,000	1-2-1975	74.3494	7767.5207	$37.70	* $292,835.53
$5,000	1-2-1980	70.6714	6505.5234	$37.70	* $245,258.23
$5,000	1-2-1985	53.6913	4187.9201	$37.70	* $157,884.59
$5,000	1-2-1990	63.5930	737.4450	$37.70	* $27,801.68
$5,000	1-3-1995	130.7190	444.2131	$37.70	* $16,746.83
$5,000	1-3-2000	73.9372	114.0884	$37.70	* $4,301.13
$5,000	1-3-2005	159.9488	216.9528	$37.70	$8,179.12
$5,000	1-4-2010	135.0986	147.5372	$37.70	$5,562.15

When calculating the total return for Merck Company, the additional value from the Medco Health spinoff should be included. Merck has produced some steady returns over most investment time periods. The beginning of 2000 would have been the worst time to invest as Merck was trading at its all time high (adjusted for splits), over $90 a share. However, even this investment would have produced a positive return when factoring in the Medco spinoff. Although an investment 5 years later in 2005 would have resulted in a much better return than the 2000 investment.