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DIMENSIONAL FUND ADVISORS LP > KEI

DateNameTickerSharesChangeValueChangePrice
09/30/2010KEITHLEY INSTRUMENTS INCKEI385,675-32,9108,296,0004,600,000$21.51
06/30/2010KEITHLEY INSTRUMENTS INCKEI418,585-8,0043,696,000881,000$8.83
03/31/2010KEITHLEY INSTRUMENTS INCKEI426,589-171,1902,815,00035,000$6.60
12/31/2009KEITHLEY INSTRUMENTS INCKEI597,779-31,4052,780,000-706,000$4.65
09/30/2009KEITHLEY INSTRUMENTS INCKEI629,184-6,5293,486,000943,000$5.54
06/30/2009KEITHLEY INSTRUMENTS INCKEI635,71330,2992,543,000491,000$4.00
03/31/2009KEITHLEY INSTRUMENTS INCKEI605,4147,7002,052,000-130,000$3.39
12/31/2008KEITHLEY INSTRUMENTS INCKEI597,714-13,2842,182,000-2,932,000$3.65
09/30/2008KEITHLEY INSTRUMENTS INCKEI610,998610,9985,114,0005,114,000$8.37
06/30/2008KEITHLEY INSTRUMENTS INCKEI615,848615,8485,851,0005,851,000$9.50
03/31/2008KEITHLEY INSTRUMENTS INCKEI611,772611,7725,934,0005,934,000$9.70
12/31/2007KEITHLEY INSTRUMENTS INCKEI463,95841,6494,491,00015,000$9.68
09/30/2007KEITHLEY INSTRUMENTS INCKEI422,3092,5474,476,000-792,000$10.60
06/30/2007KEITHLEY INSTRUMENTS INCKEI419,76291,8215,268,000254,000$12.55
03/31/2007KEITHLEY INSTRUMENTS INCKEI327,94129,0265,014,0001,083,000$15.29
12/29/2006KEITHLEY INSTRUMENTS INCKEI298,91518,4653,931,000355,000$13.15
09/30/2006KEITHLEY INSTRUMENTS INCKEI280,450-3,7003,576,000-41,000$12.75
06/30/2006KEITHLEY INSTRUMENTS INCKEI284,150723,617,000-746,000$12.73
03/31/2006KEITHLEY INSTRUMENTS INCKEI284,07823,8784,363,000725,000$15.36
12/30/2005KEITHLEY INSTRUMENTS INCKEI260,20023,8003,638,000-5,000$13.98
09/30/2005KEITHLEY INSTRUMENTS INCKEI239,7003,3003,500,000-143,000$14.60
06/30/2005KEITHLEY INSTRUMENTS INCKEI236,4009,8003,643,000-12,000$15.41
03/31/2005KEITHLEY INSTRUMENTS INCKEI226,60029,8003,655,000221,000$16.13
12/31/2004KEITHLEY INSTRUMENTS INCKEI216,50019,7004,265,000831,000$19.70
09/30/2004KEITHLEY INSTRUMENTS INCKEI196,8007,8003,434,000-752,000$17.45
06/30/2004KEITHLEY INSTRUMENTS INCKEI189,0004,7004,186,000369,000$22.15
03/31/2004KEITHLEY INSTRUMENTS INCKEI184,30013,4003,817,000690,000$20.71
12/31/2003KEITHLEY INSTRUMENTS INCKEI170,90031,7003,127,0001,157,000$18.30
09/30/2003KEITHLEY INSTRUMENTS INCKEI139,2002,3001,970,000-8,000$14.15
06/30/2003KEITHLEY INSTRUMENTS INCKEI136,90001,978,000498,000$14.45
03/31/2003KEITHLEY INSTRUMENTS INCKEI136,90001,480,000-231,000$10.81
12/31/2002KEITHLEY INSTRUMENTS INCKEI136,90001,711,00048,000$12.50
09/30/2002KEITHLEY INSTRUMENTS INCKEI136,90001,663,000-314,000$12.15
06/30/2002KEITHLEY INSTRUMENTS INCKEI136,900-3,7001,977,000-1,112,000$14.44
03/31/2002KEITHLEY INSTRUMENTS INCKEI140,60077,1003,089,0002,016,000$21.97
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