ENSCO PLC

CUSIP: G3157S106 Class: SHS CLASS A

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

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

Q4 2018
Shares 106,837 Value ($000) $380 Avg Close — Range —
Q3 2018
Shares 2,986,855 Value ($000) $25,209 Avg Close — Range —
Q2 2018
Shares 3,701,557 Value ($000) $26,873 Avg Close — Range —
Q1 2018
Shares 3,885,827 Value ($000) $17,059 Avg Close — Range —
Q4 2017
Shares 1,103,736 Value ($000) $6,523 Avg Close — Range —
Q4 2016
Shares 1,083,552 Value ($000) $10,532 Avg Close — Range —
Q3 2016
Shares 627,931 Value ($000) $5,337 Avg Close — Range —
Q2 2016
Shares 105,711 Value ($000) $1,026 Avg Close — Range —
Q2 2014
Shares 193,471 Value ($000) $10,751 Avg Close — Range —
Q2 2013
Shares 32,601 Value ($000) $1,895 Avg Close — Range —