Atika Capital Management’s Arena Pharmaceuticals Inc ARNA Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q4	–	Sell	-178,000	Closed	-$10.6M	–	137
2021 Q3	$10.6M	Sell	178,000 -23,000	-11%	-$1.36M	0.63%	55
2021 Q2	$13.7M	Sell	201,000 -13,000	-6%	-$847K	1.08%	37
2021 Q1	$14.8M	Sell	214,000 -5,700	-3%	-$439K	1.29%	28
2020 Q4	$16.9M	Sell	219,700 -56,000	-20%	-$4.2M	1.32%	21
2020 Q3	$20.6M	Buy	275,700 +61,700	+29%	+$4.11M	1.69%	14
2020 Q2	$13.5M	Buy	214,000 +59,000	+38%	+$3.25M	1.74%	12
2020 Q1	$6.51M	Sell	155,000 -7,000	-4%	-$321K	1.25%	25
2019 Q4	$7.36M	Sell	162,000 -19,000	-10%	-$898K	1.42%	31
2019 Q3	$8.28M	Sell	181,000 -49,000	-21%	-$2.75M	1.74%	26
2019 Q2	$13.5M	Buy	230,000 +35,000	+18%	+$1.81M	2.65%	6
2019 Q1	$8.74M	Buy	195,000 +15,000	+8%	+$688K	1.78%	18
2018 Q4	$7.01M	Hold	180,000	–	–	2.06%	15
2018 Q3	$8.28M	Sell	180,000 -10,000	-5%	-$405K	1.49%	21
2018 Q2	$8.28M	Buy	190,000 +60,000	+46%	+$2.58M	1.59%	14
2018 Q1	$5.13M	Sell	130,000 -40,000	-24%	-$1.56M	1.76%	23
2017 Q4	$5.77M	Buy	170,000 +48,000	+39%	+$1.37M	2.23%	13
2017 Q3	$3.11M	Buy	+122,000	New	+$2.8M	0.89%	44

Other funds holding ARNA

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

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

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

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

Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return

APM

Avidity Partners Management Dallas, Texas $936M AUM 195% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Magnetar Financial Evanston, Illinois $9.84B AUM 190.64% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

Atika Capital Management's ARNA Position: Q4 2021 in Review

Atika Capital Management sold out of Arena Pharmaceuticals Inc (ARNA) in Q4 2021, closing a stake of 178,000 shares — an estimated $10.6M sold.

Atika Capital Management first reported a position in ARNA in Q3 2017 and held it in 17 quarters. The position peaked at $20.6M in Q3 2020. 316 funds tracked by Wall St. Rank hold ARNA as of Q4 2021.

Atika Capital Management reported no remaining Arena Pharmaceuticals Inc position as of Q4 2021 after selling out during the quarter.
Atika Capital Management sold 178,000 Arena Pharmaceuticals Inc shares in Q4 2021, an estimated $10.6M.
Atika Capital Management first reported a position in Arena Pharmaceuticals Inc in Q3 2017 and held it in 17 quarters.
Atika Capital Management's Arena Pharmaceuticals Inc position peaked at $20.6M in Q3 2020.
316 funds tracked by Wall St. Rank held Arena Pharmaceuticals Inc as of Q4 2021.

Based on Atika Capital Management's 13F filing for Q4 2021, filed 11 Feb 2022.