Stock Split Calendar for May 2011

Payable Date	Ex Date	Company	Ticker	Optionable	Ratio	Announce Date
2011-05-05	2011-05-06	Merit Medical	MMSI		5-4	2011-04-21
2011-05-11	2011-05-12	Arch Capital	ACGL		3-1	2011-05-09
2011-05-17	2011-05-18	Herbalife	HLF		2-1	2011-02-22
2011-05-18	2011-05-19	3D Systems	TDSC		2-1	2011-04-28
2011-05-20	2011-05-21	Alexion Pharma	ALXN		2-1	2011-03-30
2011-05-20	2011-05-23	Fastenal	FAST		2-1	2011-04-19
2011-05-20	2011-05-23	Kronos Worldwide	KRO		2-1	2011-04-26
2011-05-20	2011-05-23	Molina Healthcare	MOH		3-2	2011-04-27
2011-05-31	2011-06-01	Enbridge	ENB		2-1	2011-02-22
2011-05-31	2011-06-01	Lincoln Electric	LECO		2-1	2011-04-29
2011-05-31	2011-06-01	Steven Madden	SHOO		3-2	2011-05-05
2011-05-31	2011-06-01	United Stationers	USTR		2-1	2011-03-01

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