Atika Capital Management’s Medidata Solutions, Inc. MDSO Stock Holding History

Atika Capital Management’s Portfolio MDSO Stock Details MDSO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2017 Q3	–	Sell	-32,500	Closed	-$2.54M	–	99
2017 Q2	$2.54M	Buy	+32,500	New	+$2.27M	0.89%	42
2017 Q1	–	Sell	-38,000	Closed	-$1.89M	–	80
2016 Q4	$1.89M	Sell	38,000 -7,000	-16%	-$363K	1.12%	37
2016 Q3	$2.51M	Sell	45,000 -10,000	-18%	-$530K	1.02%	39
2016 Q2	$2.58M	Buy	+55,000	New	+$2.4M	1.1%	30
2014 Q1	–	Sell	-4,800	Closed	-$290K	–	75
2013 Q4	$290K	Buy	+4,800	New	+$266K	0.26%	59

Other funds holding MDSO

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

BCM

Brown Capital Management Baltimore, Maryland $704M AUM 6.25% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return

ClearBridge Investments New York $115B AUM 24.78% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

CIP

Champlain Investment Partners Burlington, Vermont $7.88B AUM 6.82% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Atika Capital Management's MDSO Position: Q3 2017 in Review

Atika Capital Management sold out of Medidata Solutions, Inc. (MDSO) in Q3 2017, closing a stake of 32,500 shares — an estimated $2.54M sold.

Atika Capital Management first reported a position in MDSO in Q4 2013 and held it in 5 quarters. The position peaked at $2.58M in Q2 2016. 249 funds tracked by Wall St. Rank hold MDSO as of Q3 2017.

Atika Capital Management reported no remaining Medidata Solutions, Inc. position as of Q3 2017 after selling out during the quarter.
Atika Capital Management sold 32,500 Medidata Solutions, Inc. shares in Q3 2017, an estimated $2.54M.
Atika Capital Management first reported a position in Medidata Solutions, Inc. in Q4 2013 and held it in 5 quarters.
Atika Capital Management's Medidata Solutions, Inc. position peaked at $2.58M in Q2 2016.
249 funds tracked by Wall St. Rank held Medidata Solutions, Inc. as of Q3 2017.

Based on Atika Capital Management's 13F filing for Q3 2017, filed 14 Nov 2017.