Atika Capital Management’s Sientra, Inc. SIEN Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q1	–	Sell	-18,200	Closed	-$2.31M	–	95
2018 Q4	$2.31M	Sell	18,200 -7,460	-29%	-$1.39M	0.68%	54
2018 Q3	$6.13M	Buy	25,660 +9,660	+60%	+$2.12M	1.1%	31
2018 Q2	$3.12M	Sell	16,000 -500	-3%	-$79.3K	0.6%	62
2018 Q1	$1.59M	Sell	16,500 -1,900	-10%	-$210K	0.55%	60
2017 Q4	$2.59M	Sell	18,400 -3,600	-16%	-$523K	1%	44
2017 Q3	$3.39M	Hold	22,000	–	–	0.97%	36
2017 Q2	$2.14M	Sell	22,000 -3,000	-12%	-$245K	0.75%	51
2017 Q1	$2.1M	Buy	25,000 +4,000	+19%	+$353K	1.03%	46
2016 Q4	$1.79M	Buy	+21,000	New	+$1.75M	1.07%	40

Other funds holding SIEN

Blackstone Inc New York $32.9B AUM 23.66% 1-Year Est. Return

Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return

Abingworth London, United Kingdom $307M AUM 93.47% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return

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

GPCM

Granite Point Capital Management Boston, Massachusetts $4.9M AUM 38.41% 1-Year Est. Return

UBS AM Chicago, Illinois $550B AUM 43.33% 1-Year Est. Return

Atika Capital Management's SIEN Position: Q1 2019 in Review

Atika Capital Management sold out of Sientra, Inc. (SIEN) in Q1 2019, closing a stake of 18,200 shares — an estimated $2.31M sold.

Atika Capital Management first reported a position in SIEN in Q4 2016 and held it in 9 quarters. The position peaked at $6.13M in Q3 2018. 96 funds tracked by Wall St. Rank hold SIEN as of Q1 2019.

Atika Capital Management reported no remaining Sientra, Inc. position as of Q1 2019 after selling out during the quarter.
Atika Capital Management sold 18,200 Sientra, Inc. shares in Q1 2019, an estimated $2.31M.
Atika Capital Management first reported a position in Sientra, Inc. in Q4 2016 and held it in 9 quarters.
Atika Capital Management's Sientra, Inc. position peaked at $6.13M in Q3 2018.
96 funds tracked by Wall St. Rank held Sientra, Inc. as of Q1 2019.

Based on Atika Capital Management's 13F filing for Q1 2019, filed 13 May 2019.