ALNY
Alnylam Pharma (ALNY)
NASDAQ
$227.53+$2.43 (+1.08%)
Price as of Oct 22, 2026 7:54 PM EDT
  • $30.1B
    Market Cap
  • -51.58%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
FMR LLC
11.23%
15.0M
+444,796 (+2.96%)
Jun 30, 2026
VANGUARD GROUP INC
10.13%
13.6M
-11,520 (-0.08%)
Dec 31, 2025
CAPITAL WORLD INVESTORS
8.33%
11.1M
+342,498 (+3.07%)
Jun 30, 2026
BLACKROCK, INC.
8.15%
10.9M
+462,767 (+4.24%)
Jun 30, 2026
BLACKROCK FUNDING, INC. /DE
7.39%
9.9M
+177,839 (+1.80%)
Dec 31, 2024
CAPITAL RESEARCH GLOBAL INVESTORS
7.29%
9.8M
+279,518 (+2.87%)
Jun 30, 2026
BLACKROCK INC.
7.14%
9.5M
+522,656 (+5.47%)
Jun 30, 2024

Current Ownership Distribution

  • Mutual Funds2.7B (53.19%)
  • Institutions2.3B (46.48%)
  • Insiders16.4M (0.33%)
  • Other0 (0.00%)

Insider Transactions

  • 0.33% (16.4M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 7
    Number of InsiderSelling (last 12 months)
  • $3.3B
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
SUPRAN BRYAN
EVP, CLO and Secretary
Sell
Oct 02, 2026
$398,855.04
1,758
$226.88
12,807
Greenstreet Yvonne
Chief Executive Officer
Award
Sep 19, 2026
$0.00
107
$0.00
95,802
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 06, 2026
$17,927.84
56
$320.14
11,673
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 06, 2026
$299,751.84
909
$329.76
10,764
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 06, 2026
$273,951.34
829
$330.46
9,935
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 06, 2026
$97,243.77
293
$331.89
9,642
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 06, 2026
$66,454.06
199
$333.94
9,443
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$83,901.65
265
$316.61
13,088
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$113,960.96
359
$317.44
12,729
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$66,560.23
209
$318.47
12,520
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$27,493.34
86
$319.69
12,434
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$47,131.14
147
$320.62
12,287
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$72,047.36
224
$321.64
12,063
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$79,100.70
245
$322.86
11,818
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$26,214.84
81
$323.64
11,737
McLaughlin Melissa
Chief Human Resources Officer
Sell
Apr 02, 2026
$2,603.92
8
$325.49
11,729
Garg Pushkal
EVP Chief R&D
Sell
Mar 05, 2026
$210,803.82
654
$322.33
20,443
Fitzgerald Kevin Joseph
CSO & EVP, Head of Research
Sell
Mar 05, 2026
$39,904.44
124
$321.81
21,103
Garg Pushkal
EVP Chief R&D
Sell
Mar 05, 2026
$239,427.00
740
$323.55
19,703
Fitzgerald Kevin Joseph
CSO & EVP, Head of Research
Sell
Mar 05, 2026
$75,317.25
233
$323.25
20,870
Garg Pushkal
EVP Chief R&D
Sell
Mar 05, 2026
$165,540.90
510
$324.59
19,193
Fitzgerald Kevin Joseph
CSO & EVP, Head of Research
Sell
Mar 05, 2026
$48,040.80
148
$324.60
20,722
Garg Pushkal
EVP Chief R&D
Sell
Mar 05, 2026
$163,040.00
500
$326.08
18,693
Fitzgerald Kevin Joseph
CSO & EVP, Head of Research
Sell
Mar 05, 2026
$49,914.72
153
$326.24
20,569
Greenstreet Yvonne
Chief Executive Officer
Sell
Mar 04, 2026
$43,069.05
135
$319.03
98,493
Tanguler Tolga
EVP, Chief Commercial Officer
Sell
Mar 04, 2026
$33,817.18
106
$319.03
36,500
Garg Pushkal
EVP Chief R&D
Sell
Mar 04, 2026
$33,817.18
106
$319.03
23,300
Poulton Jeffrey V.
EVP, Chief Financial Officer
Sell
Mar 04, 2026
$36,369.42
114
$319.03
64,159
Greenstreet Yvonne
Chief Executive Officer
Sell
Mar 04, 2026
$41,281.29
129
$320.01
98,364
Tanguler Tolga
EVP, Chief Commercial Officer
Sell
Mar 04, 2026
$32,641.02
102
$320.01
36,398