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RTW INVESTMENTS, LP

Position in ALKS — Alkermes plc.

CIK 1493215 NEW YORK, NY

Position in ALKS

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$87,631,454
+$28,496,946 QoQ
Shares Held
1,672,356
0.0% QoQ
Ownership
0.997%
of shares outstanding
% of Portfolio
0.75%
of 13F equity value
Holder Rank
#25
of 421 holders
Holding Since
Sep 2023
12 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ALKS Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - Specialty & Generic

Healthcare · as of Jun 30, 2026

RTW INVESTMENTS, LP holds $332,221,652 across 3 Drug Manufacturers - Specialty & Generic names. ALKS ranks #2 (26.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 ALKS
Alkermes plc.
This page
1,672,356 $87,631,454

All Filings in ALKS

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12 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $87,631,454 1,672,356
2026-03-31 $59,134,508 1,672,356
2025-12-31 $46,792,520 1,672,356
2025-09-30 $50,170,680 1,672,356
2025-06-30 $133,960,288 4,682,289
2025-03-31 $227,332,727 6,884,698
2024-12-31 $217,363,334 7,557,835
2024-09-30 $186,246,383 6,654,033
2024-06-30 $170,073,410 7,056,988
2024-03-31 $163,889,359 6,054,280
2023-12-31 $108,228,248 3,901,523
2023-09-30 $24,902,934 889,073