Alkermes plc. - COMMON STOCK (ALKS)

Historical Holders from Q1 2014 to Q4 2025

Type / Class
Equity / COMMON STOCK
Symbol
ALKS on Nasdaq
Shares outstanding
164,237,519
Price per share
$27.98
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
169,334,474
Total reported value
$5,079,816,411
% of total 13F portfolios
0%
Share change
+439,786
Value change
+$17,415,716
Avg buy value change
+0%
Avg sell value change
-0%
Number of holders
347
Price from insider filings
$30.00
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Alkermes plc. - COMMON STOCK (ALKS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 16% $756,078,687 25,638,477 BlackRock, Inc. 31 Mar 2025
PRICE T ROWE ASSOCIATES INC /MD/ 6.1% $293,725,575 10,041,900 T. Rowe Price Associates, Inc. 30 Jun 2025
STATE STREET CORP 5.2% +6% $256,210,530 +$15,530,430 8,540,351 +6.5% STATE STREET CORPORATION 30 Sep 2025
WELLINGTON MANAGEMENT GROUP LLP 4.3% $206,798,124 7,012,483 Wellington Management Group LLP 31 Dec 2024
As of 30 Sep 2025, Alkermes plc. - COMMON STOCK (ALKS) has 347 institutional shareholders filing 13F forms. They hold 169,334,474 shares. .

Top 25 institutional shareholders own 77% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
BlackRock, Inc. 17% 27,972,078 +0.42% 0.01% $839,162,340
VANGUARD GROUP INC 11% 18,179,511 -1.7% 0.01% $545,385,330
PRICE T ROWE ASSOCIATES INC /MD/ 6.2% 10,238,357 +2% 0.03% $307,151,000
STATE STREET CORP 5.2% 8,540,351 +4% 0.01% $256,210,530
BAKER BROS. ADVISORS LP 4.9% 8,091,351 +26% 1.8% $242,740,530
RENAISSANCE TECHNOLOGIES LLC 3.8% 6,292,528 +8.3% 0.25% $188,775,840
AMERICAN CENTURY COMPANIES INC 2.7% 4,397,471 +20% 0.07% $131,924,203
GEODE CAPITAL MANAGEMENT, LLC 2.5% 4,061,394 +0.94% 0.01% $121,859,174
JPMORGAN CHASE & CO 2.4% 3,928,170 -19% 0.01% $117,845,101
DIMENSIONAL FUND ADVISORS LP 2.3% 3,697,996 +19% 0.02% $110,925,498
Commodore Capital LP 1.9% 3,096,754 +26% 4.5% $92,902,620
PRIMECAP MANAGEMENT CO/CA/ 1.7% 2,759,080 -4.9% 0.06% $82,772,400
Holocene Advisors, LP 1.5% 2,469,030 -13% 0.17% $74,070,900
Avoro Capital Advisors LLC 1.4% 2,240,000 -23% 0.87% $67,200,000
Nuveen, LLC 1.3% 2,173,476 +6.1% 0.02% $65,204,280
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 1.3% 2,140,373 +2.3% 0.01% $64,211,190
Artisan Partners Limited Partnership 1.3% 2,109,772 +37% 0.09% $63,293,160
LOOMIS SAYLES & CO L P 1.2% 2,048,851 -2.9% 0.07% $61,465,530
GOLDMAN SACHS GROUP INC 1.2% 1,994,945 +20% 0.01% $59,848,350
NORTHERN TRUST CORP 1.1% 1,766,180 -2.6% 0.01% $52,985,400
Paradigm Biocapital Advisors LP 1% 1,719,334 +25% 1.5% $51,580,020
RTW INVESTMENTS, LP 1% 1,672,356 -64% 0.62% $50,170,680
MORGAN STANLEY 0.94% 1,551,499 -14% 0% $46,544,988
Bank of New York Mellon Corp 0.87% 1,424,466 -7.3% 0.01% $42,733,974
FIRST TRUST ADVISORS LP 0.85% 1,398,021 +0.05% 0.03% $41,940,630

Institutional Holders of Alkermes plc. - COMMON STOCK (ALKS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (% of par) Investors
2025 Q4 266,793 $7,472,123 +$873,093 2,798% 9
2025 Q3 169,334,474 $5,079,816,411 +$17,415,716 3,000% 347
2025 Q2 169,266,853 $4,842,819,243 -$75,320,983 2,861% 350
2025 Q1 170,335,563 $5,623,743,735 +$100,126,642 3,302% 367
2024 Q4 167,218,616 $4,809,318,678 -$279,879,479 2,876% 338
2024 Q3 176,664,666 $4,944,475,576 -$33,593,063 2,799% 331
2024 Q2 179,311,156 $4,321,687,293 +$110,357,934 2,410% 318
2024 Q1 173,933,454 $4,707,313,011 -$25,909,266 2,707% 330
2023 Q4 579,912 $16,086,759 +$2,085,994 2,774% 2
2023 Q3 162,163,230 $4,542,189,757 +$53,990,856 2,801% 301
2023 Q2 159,039,992 $4,975,777,699 -$49,590,877 3,130% 284
2023 Q1 161,498,484 $4,552,548,266 -$5,258,169 2,819% 260
2022 Q4 159,564,044 $4,169,360,949 +$93,986,577 2,613% 269
2022 Q3 158,874,054 $3,547,847,706 -$84,749,143 2,233% 258
2022 Q2 156,545,899 $4,654,872,273 -$35,164,043 2,979% 258
2022 Q1 157,862,439 $4,152,984,239 +$53,755,731 2,631% 228
2021 Q4 156,136,647 $3,630,791,518 +$69,448,208 2,326% 201
2021 Q3 152,272,076 $4,696,450,888 -$240,289,979 3,084% 214
2021 Q2 161,088,202 $3,950,587,094 +$104,736,719 2,452% 213
2021 Q1 157,802,407 $2,949,062,760 -$61,467,738 1,868% 187
2020 Q4 161,082,728 $3,214,051,176 +$68,778,582 1,994.99% 195
2020 Q3 164,848,492 $2,731,224,156 -$28,685,519 1,657% 166
2020 Q2 159,458,041 $3,094,323,827 +$118,105,026 1,940.5% 155
2020 Q1 155,878,506 $2,245,232,122 +$53,466,687 1,441.99% 173
2019 Q4 149,378,596 $3,046,309,714 -$1,387,831 2,039.97% 197
2019 Q3 145,378,738 $2,835,000,454 +$15,008,516 1,951% 192
2019 Q2 151,617,562 $3,416,566,102 +$28,825,664 2,254% 208
2019 Q1 153,760,789 $5,609,184,939 +$2,293,231 3,649% 205
2018 Q4 153,600,100 $4,532,165,275 -$143,797,333 2,950.99% 215
2018 Q3 157,823,852 $6,698,138,450 -$25,784,895 4,243.98% 249
2018 Q2 158,405,552 $6,519,598,315 -$40,335,862 4,115.98% 231
2018 Q1 159,900,551 $9,267,170,202 -$53,645,728 5,795.97% 259
2017 Q4 161,351,028 $8,829,725,442 +$456,155,100 5,473.01% 238
2017 Q3 153,102,246 $7,783,803,101 +$37,827,811 5,084% 238
2017 Q2 152,058,402 $8,814,801,527 +$242,056,905 5,796.99% 250
2017 Q1 149,412,602 $8,740,737,917 +$685,884,441 5,850% 254
2016 Q4 146,177,932 $8,124,027,490 +$126,358,359 5,558% 260
2016 Q3 145,249,509 $6,829,313,777 +$28,291,526 4,703% 247
2016 Q2 144,782,962 $6,258,372,620 +$3,497,424 4,322% 238
2016 Q1 144,828,328 $4,951,492,428 -$206,448,785 3,419% 226
2015 Q4 141,579,181 $11,238,189,961 -$406,403,662 7,938% 280
2015 Q3 147,938,987 $8,678,990,862 +$82,198 5,866.99% 262
2015 Q2 147,206,033 $9,470,791,933 +$191,143,077 6,433.97% 265
2015 Q1 145,163,982 $8,853,343,188 +$52,563,657 6,096.98% 256
2014 Q4 144,064,984 $8,445,845,957 +$76,425,613 5,856% 215
2014 Q3 141,126,328 $6,050,466,496 -$13,445,836 4,287% 201
2014 Q2 140,989,633 $7,095,211,445 +$192,961,957 5,032.99% 210
2014 Q1 137,511,902 $6,060,417,616 +$318,407,428 4,409% 215