QUALITY SYS INC

CUSIP: 747582104 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

Note: Option positions (PUT/CALL) are excluded.

Q3 2016
Shares 43,696 Value ($000) $494 Avg Close — Range —
Q4 2015
Shares 11,843 Value ($000) $191 Avg Close — Range —
Q2 2015
Shares 14,867 Value ($000) $246 Avg Close — Range —
Q3 2014
Shares 80,718 Value ($000) $1,111 Avg Close — Range —