ACO: AMCOL International Corporation Yearly Stock Returns

Year	Beginning Price	Ending Price	Gain or Loss	Percent Gain or Loss
1988	8.75	14.00	5.25	60.00%
1989	14.00	13.00	-1.00	-7.14%
1990	13.00	9.00	-4.00	-30.77%
1991	9.00	12.50	3.50	38.89%
1992	12.50	27.25	14.75	118.00%
1993	27.25	68.625*	41.375	151.83%
1994	22.875	14.125	-8.75	-38.25%
1995	14.125	14.25	0.125	0.88%
1996	14.25	15.75	1.50	10.53%
1997	15.75	23.8125*	8.0625	51.19%
1998	15.875	9.875	-6.00	-37.80%
1999	9.875	16.125	6.25	63.29%
2000	16.125	4.75	-11.375	-70.54%
2001	4.75	7.20	2.45	51.58%
2002	7.20	5.80	-1.40	-19.44%
2003	5.80	20.30	14.50	250.00%
2004	20.30	20.09	-0.21	-1.03%
2005	20.09	20.52	0.43	2.14%
2006	20.52	27.74	7.22	35.19%
2007	27.74	36.03	8.29	29.88%
2008	36.03	20.95	-15.08	-41.85%
2009	20.95	28.42	7.47	35.66%
2010	28.42	31.00	2.58	9.08%
2011	31.00	26.85	-4.15	-13.39%
2012	26.85	30.68	3.83	14.26%
2013	30.68	33.98	3.30	10.76%
2014	33.98	45.75*	11.77	34.64%

*The 1993 ending price for AMCOL has been adjusted for a 2 for 1 and a 3 for 2 stock split.
*The 1997 ending price for AMCOL has been adjusted for a 3 for 2 stock split.
*In 2014, Minerals Technologies (MTX) completed its acquisition of AMCOL (ACO) for $45.75 per share.

Calculations do not reflect any dividends paid or any stock spinoffs from original stock. 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).