History for Z

Year	Qtr	# Shares	Change
2014	Q2	352,000	+352,000
2014	Q1	0	Liquidated
2013	Q4	833,139	+86,228
2013	Q3	746,911
2013	Q1	0	Liquidated
2012	Q4	109,722	-798,260
2012	Q3	907,982