13FBOX
Ionis Pharmaceuticals Inc · 13F Institutional Holdings
Options Calculator Rankings
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Ionis Pharmaceuticals Inc

IONS
Institutions
44
Combined AUM (Q2 2026)
$916.0M
Combined Shares (Q2 2026)
588.5M
Overall Trend
Increase
All institutions combined
Basis: holder count and combined value / shares merge all share classes of the same company (e.g. Class A / C); each institution is counted once, and value & shares are the sum across classes.
📥 Inflow (Q1 2026→Q2 2026)
+162.9M
18 institutions added · 8 new buys
Est. buy amount
📤 Outflow (Q1 2026→Q2 2026)
-110.8M
29 institutions reduced · 11 exits
Est. sell amount
⚖️ Net Share Change
+52.1M
Net Buy
💰 Est. Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$916.0M
Institutions
44
New Buys
8
Adds
10
Reduces
18
Exits
11
Unchanged
8
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
TENOR CAPITAL MANAGEMENT Co., L.P.
2.08%0.51%#2$147.8M94.7M$32.9M21.7M+73.0M+336.12%Add
CITADEL ADVISORS LLC
0.02%0.01%#15$134.7M86.5M$87.6M58.0M+28.5M+49.08%Add
VOYA INVESTMENT MANAGEMENT LLC
0.1%0.13%#7$119.4M76.7M$128.6M85.3M-8.6M-10.08%Reduce
DLD Asset Management, LP
6.19%7.56%#1$93.7M60.0M$83.1M55.0M+5.0M+9.09%Add
DEERFIELD MANAGEMENT COMPANY, L.P.
0.97%1.07%#3$93.1M60.0M$90.6M60.0M00.00%Unchanged
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.01%#17$63.9M41.1M$00+41.1MNew Buy
LMR Partners LLP
0.23%0.12%#4$62.1M40.0M$56.2M37.3M+2.7M+7.24%Add
BALYASNY ASSET MANAGEMENT L.P.
0.03%0.07%#12$27.2M17.5M$52.9M35.0M-17.5M-50.00%Reduce
STATE STREET CORP
<0.01%<0.01%#29$23.4M15.0M$18.1M11.9M+3.1M+26.26%Add
LAZARD ASSET MANAGEMENT LLC
0.03%<0.01%#14$20.5M13.2M$249,41116.5M-3.4M-20.38%Reduce
WELLINGTON MANAGEMENT GROUP LLP
<0.01%<0.01%#25$18.0M11.6M$21.0M13.9M-2.3M-16.56%Reduce
BlackRock, Inc.
<0.01%<0.01%#33$17.8M11.4M$28.9M19.2M-7.8M-40.46%Reduce
M&G Plc
0.06%0.06%#10$11.4M7.3M$11.1M7.3M00.00%Unchanged
FMR LLC
<0.01%<0.01%#30$10.9M7.0M$10.5M7.0M+15,000+0.21%Add
LORD, ABBETT & CO. LLC
0.03%0.03%#13$10.2M6.6M$10.6M7.1M-475,000-6.72%Reduce
Focus Partners Wealth
0.01%0.01%#18$8.1M5.2M$8.0M5.3M-103,000-1.95%Reduce
ADVENT CAPITAL MANAGEMENT /DE/
0.18%0.17%#6$8.0M5.1M$7.8M5.1M+14,000+0.27%Add
PICTON MAHONEY ASSET MANAGEMENT
0.06%#9$7.8M5.0M$00+5.0MNew Buy
STATE OF WISCONSIN INVESTMENT BOARD
0.01%0.01%#16$6.2M4.0M$4.5M3.0M+1.0M+33.33%Add
Amundi
<0.01%<0.01%#26$5.4M3.5M$5.2M3.5M00.00%Unchanged
Universal- Beteiligungs- und Servicegesellschaft mbH
0.01%0.01%#19$5.2M3.4M$7.1M4.7M-1.3M-27.81%Reduce
BNP Paribas Asset Management Holding S.A.
<0.01%#22$4.9M3.1M$00+3.1MNew Buy
MACKAY SHIELDS LLC
0.01%0.03%#21$3.8M2.4M$15.7M10.4M-8.0M-76.81%Reduce
SSI INVESTMENT MANAGEMENT LLC
0.21%0.24%#5$3.6M2.3M$3.5M2.3M00.00%Unchanged
Union Bancaire Privee, UBP SA
0.04%0.03%#11$2.6M1.9M$2.4M1.9M00.00%Unchanged
Calamos Advisors LLC
<0.01%0.07%#24$1.3M847,000$20.2M13.4M-12.5M-93.66%Reduce
AGF MANAGEMENT LTD
<0.01%0.01%#23$1.2M750,000$1.1M750,00000.00%Unchanged
WELLS FARGO & COMPANY/MN
<0.01%<0.01%#34$988,638635,000$7.5M5.0M-4.3M-87.25%Reduce
JPMORGAN CHASE & CO
<0.01%<0.01%#39$872,943553,000$7.8M5.3M-4.8M-89.60%Reduce
BARCLAYS PLC
<0.01%<0.01%#37$383,000246,000$2.4M1.6M-1.3M-84.21%Reduce
CITIGROUP INC
<0.01%#36$293,778189,000$00+189,000New Buy
Man Group plc
<0.01%<0.01%#31$280,244180,000$272,142180,00000.00%Unchanged
Calamos Wealth Management LLC
0.01%0.01%#20$234,538151,000$223,666148,000+3,000+2.03%Add
UBS Group AG
<0.01%<0.01%#40$205,178132,000$180,750120,000+12,000+10.00%Add
ROYAL BANK OF CANADA
<0.01%<0.01%#41$156,000100,000$3.3M2.2M-2.1M-95.37%Reduce
Ares Systematic Credit Ltd
0.09%0.58%#8$155,813100,000$735,672500,000-400,000-80.00%Reduce
TRUIST FINANCIAL CORP
<0.01%<0.01%#35$113,47173,000$117,21673,00000.00%Unchanged
OPPENHEIMER ASSET MANAGEMENT INC.
<0.01%#27$111,91572,000$00+72,000New Buy
NOMURA HOLDINGS INC
<0.01%0.02%#38$55,92235,977$6.4M85,057-49,080-57.70%Reduce
INDEPENDENT FINANCIAL GROUP, LLC
<0.01%#28$49,74032,000$00+32,000New Buy
STEPHENS INC /AR/
<0.01%#32$37,30524,000$00+24,000New Buy
BNP PARIBAS FINANCIAL MARKETS
<0.01%<0.01%#44$26,64517,000$10.1M6.7M-6.6M-99.74%Reduce
COMMONWEALTH EQUITY SERVICES, LLC
<0.01%#42$17,10011,000$00+11,000New Buy
ODDO BHF ASSET MANAGEMENT SAS
<0.01%0.02%#43$426274$567,378374-100-26.74%Reduce

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow