MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q1 2019
Shares 55,798 Value ($000) $4,087 Avg Close — Range —
Q4 2018
Shares 3,200 Value ($000) $216 Avg Close — Range —