HORIZON PHARMA INC

CUSIP: 44047T109 Class: COM

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

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

Q2 2014
Shares 215,160 Value ($000) $3,404 Avg Close — Range —
Q1 2014
Shares 511,223 Value ($000) $7,730 Avg Close — Range —