NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

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

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

Q4 2018
Shares 1,393,302 Value ($000) $39,875 Avg Close — Range —
Q3 2018
Shares 1,148,542 Value ($000) $32,033 Avg Close — Range —
Q2 2018
Shares 873,878 Value ($000) $24,381 Avg Close — Range —
Q1 2018
Shares 1,014,975 Value ($000) $25,232 Avg Close — Range —
Q4 2017
Shares 275,189 Value ($000) $6,668 Avg Close — Range —
Q3 2017
Shares 65,940 Value ($000) $1,846 Avg Close — Range —
Q4 2016
Shares 228,002 Value ($000) $5,976 Avg Close — Range —
Q2 2016
Shares 205,492 Value ($000) $4,455 Avg Close — Range —
Q1 2016
Shares 39,086 Value ($000) $586 Avg Close — Range —