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Ionis Pharmaceuticals

339 hedge funds and large institutions have $5.01B invested in Ionis Pharmaceuticals in 2025 Q1 according to their latest regulatory filings, with 54 funds opening new positions, 102 increasing their positions, 122 reducing their positions, and 61 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
339
Holders Change
-12
Holders Change %
-3.42%
% of All Funds
4.6%
Holding in Top 10
6
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+50%
% of All Funds
0.08%
New
54
Increased
102
Reduced
122
Closed
61
Calls
$24.8M
Puts
$18.8M
Net Calls
+$6M
Net Calls Change
+$10.5M
Name Holding Trade Value Shares
Change
Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$712M +$27.9M +924,094 +4%
Vanguard Group
2
Vanguard Group
Pennsylvania
$494M -$2.67M -88,605 -0.5%
T. Rowe Price Investment Management
3
T. Rowe Price Investment Management
Maryland
$488M +$60.5M +2,006,334 +14%
Capital World Investors
4
Capital World Investors
California
$373M +$27M +896,581 +8%
BlackRock
5
BlackRock
New York
$340M -$12.1M -401,106 -3%
Wellington Management Group
6
Wellington Management Group
Massachusetts
$254M -$7.72M -255,727 -3%
BG
7
Bellevue Group
Switzerland
$237M -$468K -15,502 -0.2%
State Street
8
State Street
Massachusetts
$146M -$17.5M -581,280 -11%
DTC
9
Deep Track Capital
Connecticut
$138M +$79.4M +2,630,279 +136%
Citadel Advisors
10
Citadel Advisors
Florida
$105M +$39.6M +1,314,146 +61%
T. Rowe Price Associates
11
T. Rowe Price Associates
Maryland
$98.5M -$17M -561,905 -15%
TBC
12
Tweedy, Browne Co
Connecticut
$90M -$8.01M -265,345 -8%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$85.8M +$4.7M +155,706 +6%
O
14
OrbiMed
New York
$76.6M -$8.36M -277,211 -10%
Two Sigma Advisers
15
Two Sigma Advisers
New York
$63.1M +$22.4M +742,800 +55%
BI
16
BVF Inc
California
$57.7M +$57.7M +1,913,385 New
UBS Group
17
UBS Group
Switzerland
$57M -$815K -27,006 -1%
Two Sigma Investments
18
Two Sigma Investments
New York
$50.9M +$23.1M +764,414 +83%
Macquarie Group
19
Macquarie Group
Australia
$50.3M -$3.09M -102,549 -6%
Charles Schwab
20
Charles Schwab
California
$43.6M -$1.14M -37,811 -3%
BNP Paribas Asset Management
21
BNP Paribas Asset Management
France
$36.1M +$3.5M +116,051 +11%
Morgan Stanley
22
Morgan Stanley
New York
$34.5M -$5.6M -185,748 -14%
TD Asset Management
23
TD Asset Management
Ontario, Canada
$33.2M +$1.52M +50,476 +5%
Adage Capital Partners
24
Adage Capital Partners
Massachusetts
$32.5M +$24.2M +800,600 +291%
Hudson Bay Capital Management
25
Hudson Bay Capital Management
Connecticut
$31.7M +$6.9M +228,700 +28%