MEDIDATA SOLUTIONS INC

CUSIP: 58471A105 Class: COM

GW&K Investment Management, LLC's Holding History (CIK: 0001082917)

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

Q3 2019
Shares 204 Value ($000) $19 Avg Close — Range —
Q2 2019
Shares 359,714 Value ($000) $32,558 Avg Close — Range —
Q1 2019
Shares 531,874 Value ($000) $38,954 Avg Close — Range —
Q4 2018
Shares 559,679 Value ($000) $37,734 Avg Close — Range —
Q3 2018
Shares 582,775 Value ($000) $42,723 Avg Close — Range —
Q2 2018
Shares 585,307 Value ($000) $47,152 Avg Close — Range —
Q1 2018
Shares 589,909 Value ($000) $37,052 Avg Close — Range —
Q4 2017
Shares 592,745 Value ($000) $37,562 Avg Close — Range —
Q3 2017
Shares 644,107 Value ($000) $50,279 Avg Close — Range —
Q2 2017
Shares 646,483 Value ($000) $50,555 Avg Close — Range —
Q1 2017
Shares 666,903 Value ($000) $38,474 Avg Close — Range —
Q4 2016
Shares 675,568 Value ($000) $33,555 Avg Close — Range —
Q3 2016
Shares 773,772 Value ($000) $43,146 Avg Close — Range —
Q2 2016
Shares 796,916 Value ($000) $37,351 Avg Close — Range —
Q1 2016
Shares 809,951 Value ($000) $31,353 Avg Close — Range —
Q4 2015
Shares 761,623 Value ($000) $37,540 Avg Close — Range —
Q3 2015
Shares 689,521 Value ($000) $29,036 Avg Close — Range —
Q2 2015
Shares 672,908 Value ($000) $36,552 Avg Close — Range —
Q1 2015
Shares 682,405 Value ($000) $33,465 Avg Close — Range —
Q4 2014
Shares 599,041 Value ($000) $28,604 Avg Close — Range —
Q3 2014
Shares 595,984 Value ($000) $26,396 Avg Close — Range —
Q2 2014
Shares 583,293 Value ($000) $24,971 Avg Close — Range —
Q1 2014
Shares 540,887 Value ($000) $29,392 Avg Close — Range —
Q4 2013
Shares 708,722 Value ($000) $42,879 Avg Close — Range —
Q3 2013
Shares 342,993 Value ($000) $33,932 Avg Close — Range —
Q2 2013
Shares 300,050 Value ($000) $23,239 Avg Close — Range —