Rock Springs Capital Management’s Arena Pharmaceuticals Inc ARNA Stock Holding History

Rock Springs 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
2018 Q4	–	Sell	-375,000	Closed	-$17.3M	–	147
2018 Q3	$17.3M	Hold	375,000	–	–	0.62%	55
2018 Q2	$16.4M	Hold	375,000	–	–	0.63%	57
2018 Q1	$14.8M	Buy	375,000 +160,000	+74%	+$6.22M	0.63%	60
2017 Q4	$7.3M	Hold	215,000	–	–	0.33%	89
2017 Q3	$5.48M	Buy	+215,000	New	+$4.93M	0.25%	99

Other funds holding ARNA

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

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

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

PHS

PFM Health Sciences San Francisco, California $1.1B AUM 57.92% 1-Year Est. Return

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

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Perceptive Advisors New York $5.12B AUM 314.02% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return

Rock Springs Capital Management's ARNA Position: Q4 2018 in Review

Rock Springs Capital Management sold out of Arena Pharmaceuticals Inc (ARNA) in Q4 2018, closing a stake of 375,000 shares — an estimated $17.3M sold.

Rock Springs Capital Management first reported a position in ARNA in Q3 2017 and held it in 5 quarters. The position peaked at $17.3M in Q3 2018. 177 funds tracked by Wall St. Rank hold ARNA as of Q4 2018.

Rock Springs Capital Management reported no remaining Arena Pharmaceuticals Inc position as of Q4 2018 after selling out during the quarter.
Rock Springs Capital Management sold 375,000 Arena Pharmaceuticals Inc shares in Q4 2018, an estimated $17.3M.
Rock Springs Capital Management first reported a position in Arena Pharmaceuticals Inc in Q3 2017 and held it in 5 quarters.
Rock Springs Capital Management's Arena Pharmaceuticals Inc position peaked at $17.3M in Q3 2018.
177 funds tracked by Wall St. Rank held Arena Pharmaceuticals Inc as of Q4 2018.

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