ALKS Institutional Ownership
Who owns Alkermes plc. and what the big funds did with it last quarter, from every SEC 13F filing. 427 funds reported holding ALKS at Jun 30, 2026, together owning 106.2% of the company.
- ▲224 buying vs 189 selling
- ▲Held by funds +0.8 pts
- ▲Funds holding +33
- ●Superinvestors: 2 added, 2 cut
- ▲Put/call 2.34 to 0.03
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 427 | 394 | +8.4% |
| In funds' top 10 | 11 | 3 | +266.7% |
| 13F shares | 178M | 177M | +0.8% |
| Held by funds | 106.2% | 105.4% | +0.8 pts |
| New positions | 87 | 66 | +31.8% |
| Increased | 137 | 120 | +14.2% |
| Reduced | 137 | 150 | −8.7% |
| Sold out | 52 | 47 | +10.6% |
| Calls (shares) | 790K | 21K | +3608.5% |
| Puts (shares) | 26K | 50K | −48.3% |
| Put/call ratio | 0.03 | 2.34 | −98.8% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ALKS
All superinvestors →
Who owns ALKS
share of fund held shares- Index and passive funds41.0%
- Active managers and hedge funds50.2%
- Banks and brokers6.3%
- Pensions, insurers and other2.6%
The top 10 holders own 51.2% of all ALKS shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
83 funds changed their position- Principal Financial Group IncAdded+119K sh
- Y-Intercept (Hong Kong) LtdNew+105K sh
- Robeco Institutional Asset Management B.V.Trimmed−35K sh
- State of Alaska, Department of RevenueTrimmed−28K sh
- Hennion & Walsh Asset Management, Inc.Added+21K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 17.43% | 29.2M | $1.5B | +921K |
| 2 | Baker Bros. Advisors LP | 5.97% | 10M | $525M | 0 |
| 3 | Vanguard Portfolio Management LLC | 5.66% | 9.5M | $497M | −20K |
| 4 | State Street Corp | 5.46% | 9.2M | $480M | −305K |
| 5 | Vanguard Capital Management LLC | 4.48% | 7.5M | $394M | +88K |
| 6 | Price T Rowe Associates Inc /md/ | 4.02% | 6.7M | $353M | +2.1M |
| 7 | Renaissance Technologies LLC | 3.85% | 6.5M | $339M | +301K |
| 8 | Geode Capital Management, LLC | 2.67% | 4.5M | $235M | +296K |
| 9 | Dimensional Fund Advisors LP | 2.50% | 4.2M | $220M | −328K |
| 10 | Deep Track Capital, LP | 2.38% | 4M | $210M | +410K |
- Norges Bank+2.2M sh+$113M
- Price T Rowe Associates Inc /md/+2.1M sh+$109M
- Adage Capital Partners Gp, L.l.c.+1.4M sh+$71.7M
- Bain Capital Life Sciences Investors, LLC+1.3M sh+$69.6M
- Holocene Advisors, LP+1.3M sh+$67.3M
- Franklin Resources Inc+988K sh+$51.8M
- Summit Partners Public Asset Management, LLC+950K sh+$49.8M
- BlackRock, Inc.+921K sh+$48.3M
- Jpmorgan Chase & Co−3.8M sh−$207M
- American Century Companies Inc−2.1M sh−$111M
- Commodore Capital LP−1.2M sh−$62.9M
- Soleus Capital Management, L.P.−942K sh−$49.3M
- Avoro Capital Advisors LLC−1.2M sh−$42.4M
- Pacer Advisors, Inc.−679K sh−$35.6M
- Citadel Advisors LLC−596K sh−$31.3M
- First Trust Advisors LP−548K sh−$28.7M
ALKS institutional ownership FAQ
Who owns the most ALKS stock?
In Q2 2026 13F filings the largest holder of ALKS was BlackRock, Inc., followed by Baker Bros. Advisors LP and Vanguard Portfolio Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of ALKS is owned by institutions?
Funds that file 13F reports held 106.2% of ALKS's shares at Jun 30, 2026, compared with 105.4% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ALKS?
In Q2 2026, 224 funds bought ALKS (87 of them new positions) and 189 sold (52 sold out completely). Among well known investors, 2 added and 2 cut. Our fund sentiment for ALKS is strongly bullish.
What is ALKS's institutional put/call ratio?
Funds reported $1.4M of ALKS puts against $49.7M of calls, a put/call ratio of 0.03 (2.34 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this ALKS ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.