Alkermes plc
US ˙ NasdaqGS ˙ IE00B56GVS15

SecurityALKS / Alkermes plc
InstitutionDaiwa Securities Group Inc.
Latest Disclosed Ownership13,400 shares
Latest Disclosed Value $ 473,824
Daiwa Securities Group Inc. ownership in ALKS / Alkermes plc

On May 13, 2026 - Daiwa Securities Group Inc. filed a 13F-HR form disclosing ownership of 13,400 shares of Alkermes plc (US:ALKS) valued at $473,824 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 11,759 shares of Alkermes plc. The current value of the position is $572,984 USD.

Daiwa Securities Group Inc. has a history of taking positions in derivatives of the underlying security (ALKS) in the form of stock options.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

ALKS / Alkermes plc Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F ALKERMES SHS G01767105 13,400 1,641 13.96 474 0.0008
2026-02-10 2025-12-31 13F ALKERMES SHS G01767105 11,759 11,240 2,165.70 0 0.0011
2025-11-14 2025-09-30 13F ALKERMES SHS G01767105 519 -74 -12.48 0 0.0001
2025-08-14 2025-06-30 13F ALKERMES SHS G01767105 593 59 11.05 0 0.0001
2025-05-13 2025-03-31 13F ALKERMES SHS G01767105 534 0 0.00 0 0.0001
2025-02-07 2024-12-31 13F ALKERMES SHS G01767105 534 -12,707 -95.97 0 0.0001
2024-11-12 2024-09-30 13F ALKERMES SHS G01767105 13,241 4,800 56.87 0 0.0017
2024-08-07 2024-06-30 13F ALKERMES SHS G01767105 8,441 -20 -0.24 0 0.0011
2024-05-02 2024-03-31 13F ALKERMES SHS G01767105 8,461 6,700 380.47 0 0.0013
2024-01-31 2023-12-31 13F ALKERMES SHS G01767105 1,761 1,100 166.41 0 0.0003
2023-11-01 2023-09-30 13F ALKERMES SHS G01767105 661 0 0.00 0 0.0001
2023-07-31 2023-06-30 13F ALKERMES SHS G01767105 661 0 0.00 0 0.0001
2023-05-02 2023-03-31 13F ALKERMES SHS G01767105 661 0 0.00 0 0.0001
2023-02-06 2022-12-31 13F ALKERMES SHS G01767105 661 52 8.54 0 -100.00 0.0001
2022-11-02 2022-09-30 13F ALKERMES SHS G01767105 609 0 0.00 14 -22.22 0.0001
2022-08-09 2022-06-30 13F ALKERMES SHS G01767105 609 137 29.03 18 50.00 0.0001
2022-04-29 2022-03-31 13F ALKERMES SHS G01767105 472 0 0.00 12 9.09 0.0001
2022-02-03 2021-12-31 13F ALKERMES SHS G01767105 472 -81 -14.65 11 -35.29 0.0001
2021-11-05 2021-09-30 13F ALKERMES SHS G01767105 553 254 84.95 17 142.86 0.0001
2021-08-06 2021-06-30 13F ALKERMES SHS G01767105 299 0 0.00 7 16.67 0.0000
2021-05-03 2021-03-31 13F ALKERMES SHS G01767105 299 0 0.00 6 0.00 0.0000
2021-02-04 2020-12-31 13F ALKERMES SHS G01767105 299 -590 -66.37 6 -60.00 0.0000
2020-11-02 2020-09-30 13F ALKERMES SHS G01767105 889 0 0.00 15 -53.12 0.0001
2020-08-11 2020-06-30 13F ALKERMES SHS G01767105 889 0 0.00 32 146.15 0.0007
2020-05-14 2020-03-31 13F ALKERMES SHS G01767105 889 0 0.00 13 -23.53 0.0001
2020-01-31 2019-12-31 13F ALKERMES SHS G01767105 889 -5,153 -85.29 17 -85.59 0.0001
2019-11-04 2019-09-30 13F ALKERMES SHS G01767105 6,042 -608 -9.14 118 -21.33 0.0010
2019-07-24 2019-06-30 13F ALKERMES SHS G01767105 6,650 -23,088 -77.64 150 -86.18 0.0013
2019-04-26 2019-03-31 13F ALKERMES SHS G01767105 29,738 -5,277 -15.07 1,085 5.03 0.0095
2019-02-05 2018-12-31 13F ALKERMES SHS G01767105 35,015 -2,244 -6.02 1,033 -34.66 0.0099
2018-11-01 2018-09-30 13F ALKERMES SHS G01767105 37,259 -11,089 -22.94 1,581 -20.55 0.0132
2018-07-30 2018-06-30 13F ALKERMES SHS G01767105 48,348 -12,392 -20.40 1,990 -43.48 0.0157
2018-05-02 2018-03-31 13F ALKERMES SHS G01767105 60,740 9,697 19.00 3,521 26.07 0.0282
2018-02-06 2017-12-31 13F ALKERMES SHS G01767105 51,043 46,393 997.70 2,793 1,083.47 0.0197
2017-11-02 2017-09-30 13F ALKERMES SHS G01767105 4,650 0 0.00 236 -12.59 0.0016
2017-07-28 2017-06-30 13F ALKERMES SHS G01767105 4,650 450 10.71 270 9.76 0.0017
2017-05-02 2017-03-31 13F ALKERMES SHS G01767105 4,200 0 0.00 246 5.58 0.0015
2017-02-01 2016-12-31 13F ALKERMES SHS G01767105 4,200 400 10.53 233 30.17 0.0015
2017-01-10 2016-09-30 13F/A-1 ALKERMES SHS G01767105 3,800 400 11.76 179 21.77 0.0011
2016-11-04 2016-09-30 13F ALKERMES SHS G01767105 3,800 179
2016-07-25 2016-06-30 13F ALKERMES SHS G01767105 3,400 0 0.00 147 26.72 0.0009
2016-05-12 2016-03-31 13F ALKERMES SHS G01767105 3,400 -39,443 -92.06 116 -96.59 0.0007
2016-02-04 2015-12-31 13F ALKERMES SHS G01767105 42,843 -30,787 -41.81 3,401 -21.25 0.0225
2015-11-10 2015-09-30 13F ALKERMES SHS G01767105 73,630 5,690 8.38 4,319 -1.19 0.0307
2015-08-05 2015-06-30 13F ALKERMES SHS G01767105 67,940 27,100 66.36 4,371 75.54 0.0311
2015-05-12 2015-03-31 13F ALKERMES SHS G01767105 40,840 30,970 313.78 2,490 330.80 0.0167
2015-02-13 2014-12-31 13F ALKERMES SHS G01767105 9,870 7,670 348.64 578 514.89 0.0041
2014-11-12 2014-09-30 13F ALKERMES SHS G01767105 2,200 2,200 94 0.0007
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2017-02-01 2016-12-31 13F ALKERMES PUT PUT 0 -100.00 0 -100.00 n/a n/a n/a
2017-01-10 2016-09-30 13F/A ALKERMES PUT PUT 200 245 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.