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Smart Money Score
Composite context from Form 4, 13F and congressional disclosures; not a forecast.
Of the 15 tracked institutions holding ALKS, 7 have a 3-year clone track record — 7 of them beat the S&P. Average holder's clone alpha: +4.7pt. It's a gauge of who owns the name, not just how many.
Among the 15 tracked institutional investors we monitor, ALKS (ALKERMES PLC) is held with a combined value of $4.16B across 88,101,925 shares. The largest holder is BlackRock, Inc. with a position worth $1.53B (0.02% of their portfolio). 2 funds opened new positions in the most recent quarter. 5 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$4.16B
Total Shares Held
88,101,925
Institutional Holders
15
% of Shares Outstanding
52.5%
of 167.76M shares · SEC 2026-07-23
Days to Cover
10.2+2.5%
14.76M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 52.5% of ALKS's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-23), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $1.53B | 0.02% | +3.3% |
| 2 | BAKER BROS. ADVISORS LP | $524.59M | 2.63% | - |
| 3 | VANGUARD GROUP INC | $503.85M | 0.01% | -0.9% |
| 4 | STATE STREET CORP | $479.97M | 0.01% | -3.2% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $353.00M | 0.04% | +44.4% |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $338.52M | 0.47% | +4.9% |
| 7 | WELLINGTON MANAGEMENT GROUP LLP | $147.48M | 0.03% | -5.2% |
| 8 | CITADEL ADVISORS LLC | $86.20M | 0.05% | -26.6% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $71.68M | 0.10% | New |
| 10 | FMR LLC | $59.44M | 0.00% | -14.3% |
| Member | Type | Date |
|---|---|---|
| Gilbert Cisneros | Buy | Jul 30, 2026 |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ALKS with a position worth $1.53B, representing 0.02% of their portfolio. In total, 15 institutional investors hold ALKS with a combined value of $4.16B.
In the most recent quarter, 2 funds opened a new position in ALKS. Additionally, 5 increased their holdings and 7 reduced their positions.
Institutional investors hold $4.16B worth of ALKS stock across 15 positions. The largest institutional holder is BlackRock, Inc. with $1.53B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ALKS, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ALKS positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$45.40
2026-09-09
YTD
+60.7%
66% of 52-week range
