Atika Capital Management’s bluebird bio BLUE Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2018 Q4	–	Sell	-1,397	Closed	-$2.64M	–	74
2018 Q3	$2.64M	Sell	1,397 -31	-2%	-$64K	0.47%	71
2018 Q2	$2.9M	Sell	1,428 -425	-23%	-$969K	0.56%	68
2018 Q1	$4.1M	Sell	1,853 -193	-9%	-$491K	1.4%	32
2017 Q4	$4.72M	Buy	2,046 +1,428	+231%	+$2.9M	1.82%	22
2017 Q3	$1.1M	Sell	618 -1,312	-68%	-$1.83M	0.32%	67
2017 Q2	$2.63M	Buy	1,930 +463	+32%	+$559K	0.92%	41
2017 Q1	$1.73M	Buy	+1,467	New	+$1.5M	0.85%	48
2015 Q3	–	Sell	-1,467	Closed	-$3.2M	–	63
2015 Q2	$3.2M	Buy	1,467 +77	+6%	+$157K	1.44%	29
2015 Q1	$2.17M	Sell	1,390 -115	-8%	-$152K	1.45%	31
2014 Q4	$1.79M	Buy	+1,505	New	+$1.01M	1.31%	31

Other funds holding BLUE

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

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

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

Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

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

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

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

Atika Capital Management's BLUE Position: Q4 2018 in Review

Atika Capital Management sold out of bluebird bio (BLUE) in Q4 2018, closing a stake of 1,397 shares — an estimated $2.64M sold.

Atika Capital Management first reported a position in BLUE in Q4 2014 and held it in 10 quarters. The position peaked at $4.72M in Q4 2017. 251 funds tracked by Wall St. Rank hold BLUE as of Q4 2018.

Atika Capital Management reported no remaining bluebird bio position as of Q4 2018 after selling out during the quarter.
Atika Capital Management sold 1,397 bluebird bio shares in Q4 2018, an estimated $2.64M.
Atika Capital Management first reported a position in bluebird bio in Q4 2014 and held it in 10 quarters.
Atika Capital Management's bluebird bio position peaked at $4.72M in Q4 2017.
251 funds tracked by Wall St. Rank held bluebird bio as of Q4 2018.

Based on Atika Capital Management's 13F filing for Q4 2018, filed 14 Feb 2019.