• $35.3B
    Market Cap
  • 314.11%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
VANGUARD GROUP INC
7.86%
16.7M
+1.1M (+6.32%)
Dec 31, 2025
BLACKROCK FUNDING, INC. /DE
6.92%
14.7M
+852,690 (+5.79%)
Dec 31, 2024
FARALLON CAPITAL MANAGEMENT LLC
6.40%
13.6M
-978,000 (-7.19%)
Mar 31, 2026
BLACKROCK INC.
6.31%
13.4M
+1.1M (+8.21%)
Jun 30, 2024
BLACKROCK, INC.
5.27%
11.2M
+2.3M (+20.39%)
Mar 31, 2026
JANUS HENDERSON GROUP PLC
4.59%
9.8M
-2.5M (-25.98%)
Mar 31, 2026
BAKER BROS. ADVISORS LP
4.49%
9.6M
+100,000 (+1.05%)
Mar 31, 2026

Current Ownership Distribution

  • Institutions2.6B (86.33%)
  • Mutual Funds384.1M (12.97%)
  • Insiders20.7M (0.70%)
  • Other0 (0.00%)

Insider Transactions

  • 0.70% (20.7M)
    Current InsiderOwnership (%, shares)
  • 0
    Number of InsiderBuying (last 12 months)
  • $0.00
    Amount of InsiderBuying (last 12 months)
  • 6
    Number of InsiderSelling (last 12 months)
  • $322.0M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
Horn Margaret A
Chief Operating Officer
Exempt
Jun 17, 2026
$0.00
573
$0.00
75,075
Horn Margaret A
Chief Operating Officer
Exempt
Jun 17, 2026
$0.00
3,302
$0.00
71,750
Horn Margaret A
Chief Operating Officer
Exempt
Jun 17, 2026
$0.00
25,725
$0.00
114,275
Horn Margaret A
Chief Operating Officer
Exempt
Jun 17, 2026
$23,344.02
573
$40.74
155,220
Horn Margaret A
Chief Operating Officer
Exempt
Jun 17, 2026
$98,399.60
3,302
$29.80
158,522
Horn Margaret A
Chief Operating Officer
Exempt
Jun 17, 2026
$681,712.50
25,725
$26.50
184,247
Horn Margaret A
Chief Operating Officer
Sell
Jun 17, 2026
$4.7M
29,600
$160.12
154,647
Cislini Jeff
General Counsel
Sell
Jun 16, 2026
$336,748.90
2,157
$156.12
56,521
Mancini Anthony
See Remarks
Sell
Jun 16, 2026
$720,490.11
4,615
$156.12
49,975
GOLDSMITH MARK A
See Remarks
Sell
Jun 16, 2026
$1.6M
10,020
$156.12
267,330
Anders Jack
Chief Financial Officer
Sell
Jun 16, 2026
$424,956.46
2,722
$156.12
123,269
Kelsey Stephen Michael
See Remarks
Sell
Jun 16, 2026
$651,797.66
4,175
$156.12
291,876
Horn Margaret A
Chief Operating Officer
Exempt
Jun 15, 2026
$633,344.04
15,546
$40.74
173,768
Horn Margaret A
Chief Operating Officer
Exempt
Jun 15, 2026
$1.3M
44,854
$29.80
218,622
Horn Margaret A
Chief Operating Officer
Sell
Jun 15, 2026
$9.7M
60,400
$160.17
158,222
Horn Margaret A
Chief Operating Officer
Exempt
Jun 15, 2026
$0.00
15,546
$0.00
75,648
Horn Margaret A
Chief Operating Officer
Exempt
Jun 15, 2026
$0.00
44,854
$0.00
75,052
Horn Margaret A
Chief Operating Officer
Exempt
Jun 11, 2026
$0.00
1,094
$0.00
0
Horn Margaret A
Chief Operating Officer
Exempt
Jun 11, 2026
$0.00
8,906
$0.00
91,194
Horn Margaret A
Chief Operating Officer
Exempt
Jun 11, 2026
$46,440.30
1,094
$42.45
159,316
Horn Margaret A
Chief Operating Officer
Exempt
Jun 11, 2026
$362,830.44
8,906
$40.74
168,222
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$189,727.28
1,315
$144.28
166,907
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$128,457.31
885
$145.15
166,022
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$102,225.97
700
$146.04
165,322
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$73,636.00
500
$147.27
164,822
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$267,701.58
1,800
$148.72
163,022
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$688,357.34
4,600
$149.64
158,422
Horn Margaret A
Chief Operating Officer
Sell
Jun 11, 2026
$30,034.00
200
$150.17
158,222
Horn Margaret A
Chief Operating Officer
Sell
Jun 16, 2025
$558,126.50
3,575
$156.12
154,647