Atika Capital Management’s Alkermes ALKS Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$2.91M	Buy	+55,571	New	+$2.17M	0.19%	70
2018 Q1	–	Sell	-21,000	Closed	-$1.15M	–	73
2017 Q4	$1.15M	Hold	21,000	–	–	0.44%	60
2017 Q3	$1.07M	Hold	21,000	–	–	0.31%	69
2017 Q2	$1.22M	Sell	21,000 -1,000	-5%	-$58.1K	0.43%	64
2017 Q1	$1.29M	Sell	22,000 -9,000	-29%	-$510K	0.63%	54
2016 Q4	$1.72M	Sell	31,000 -32,450	-51%	-$1.73M	1.03%	41
2016 Q3	$2.98M	Buy	63,450 +3,450	+6%	+$164K	1.22%	29
2016 Q2	$2.59M	Buy	+60,000	New	+$2.48M	1.11%	29
2016 Q1	–	Sell	-25,500	Closed	-$2.02M	–	45
2015 Q4	$2.02M	Buy	+25,500	New	+$1.79M	1.04%	37

Other funds holding ALKS

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

BBA

Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

DTC

Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

Atika Capital Management's ALKS Position: Q2 2026 in Review

Atika Capital Management opened a new position in Alkermes (ALKS) in Q2 2026: 55,571 shares worth $2.91M. The stake represents 0.19% of the portfolio and ranks #70 among its holdings. This is a return to the name: Atika Capital Management previously reported a position in ALKS as recently as Q4 2017.

Atika Capital Management first reported a position in ALKS in Q4 2015 and has held it in 9 quarters since. The position peaked at $2.98M in Q3 2016. 425 funds tracked by Wall St. Rank hold ALKS as of Q2 2026.

Atika Capital Management held 55,571 shares of Alkermes worth $2.91M as of Q2 2026.
Alkermes was a new Atika Capital Management position in Q2 2026.
Alkermes made up 0.19% of Atika Capital Management's portfolio in Q2 2026, its #70 holding.
Atika Capital Management first reported a position in Alkermes in Q4 2015 and has held it in 9 quarters since.
Atika Capital Management's Alkermes position peaked at $2.98M in Q3 2016.
425 funds tracked by Wall St. Rank held Alkermes as of Q2 2026.

Based on Atika Capital Management's 13F filing for Q2 2026, filed 13 Aug 2026.