13FBOX
IONIS PHARMACEUTICALS INC · 13F Institutional Holdings
Options Calculator Rankings

IONIS PHARMACEUTICALS INC

IONS
Institutions
521
Combined AUM (Q2 2026)
$14.87B
Combined Shares (Q2 2026)
187.3M
Overall Trend
Increase
All institutions combined
📥 Inflow (Q1 2026→Q2 2026)
+23.0M
279 · 70 New Buys · ≈
📤 Outflow (Q1 2026→Q2 2026)
-11.7M
204 · 48 Exit · ≈
⚖️ Net
+11.2M
Net Buy
💰 Net Value
≈ —
est. price
Latest AUM (Q2 2026)
$14.87B
Institutions
521
New Buys
70
Adds
209
Reduces
156
Exits
48
Unchanged
86
Ownership TrendPortfolio %Prev Q %RankQ2 2026 ValueQ2 2026 SharesPrev Q ValuePrev Q SharesShares ChangeAction
FMR LLC
0.08%0.1%#106$1.95B24.6M$1.84B24.6M+75,319+0.31%Add
Capital World Investors
0.2%0.22%#68$1.72B21.7M$1.59B21.2M+482,857+2.28%Add
BlackRock, Inc.
0.01%0.01%#222$848.8M10.7M$784.1M10.4M+262,184+2.51%Add
VANGUARD PORTFOLIO MANAGEMENT LLC
0.03%0.03%#151$623.2M7.9M$586.4M7.8M+50,627+0.65%Add
WELLINGTON MANAGEMENT GROUP LLP
0.1%0.09%#98$606.7M7.7M$480.0M6.4M+1.3M+19.71%Add
VANGUARD CAPITAL MANAGEMENT LLC
0.01%0.01%#224$571.8M7.2M$534.5M7.1M+93,167+1.31%Add
TWO SIGMA INVESTMENTS, LP
0.36%0.35%#44$495.7M6.3M$439.8M5.9M+394,713+6.74%Add
ROYAL BANK OF CANADA
0.07%0.05%#116$490.2M6.2M$285.5M3.8M+2.4M+62.62%Add
STATE STREET CORP
0.01%0.01%#243$343.7M4.3M$300.0M4.0M+339,284+8.49%Add
T. Rowe Price Investment Management, Inc.
0.21%0.32%#67$313.9M4.0M$462.5M6.2M-2.2M-35.71%Reduce
GEODE CAPITAL MANAGEMENT, LLC
0.02%0.02%#190$294.8M3.6M$305.2M4.0M-400,308-10.05%Reduce
PRICE T ROWE ASSOCIATES INC /MD/
0.02%0.03%#160$252.5M3.2M$227.2M3.0M+159,249+5.26%Add
JPMORGAN CHASE & CO
0.01%0.01%#227$216.2M2.7M$171.4M2.4M+308,150+13.04%Add
Artisan Partners Limited Partnership
0.33%0.25%#48$209.3M2.6M$154.6M2.1M+581,716+28.26%Add
Tweedy, Browne Co LLC
13.7%13.84%#1$180.8M2.3M$170.9M2.3M+4,686+0.21%Add
Deep Track Capital, LP
2.54%2.39%#13$174.4M2.2M$146.4M2.0M+250,000+12.82%Add
SUSQUEHANNA INTERNATIONAL GROUP, LLP
0.01%0.01%#218$168.6M2.1M$91.8M1.2M+903,880+73.94%Add
GOLDMAN SACHS GROUP INC
0.01%0.01%#204$167.3M2.1M$127.6M1.7M+410,098+24.13%Add
BAKER BROS. ADVISORS LP
0.81%0.88%#23$162.4M2.0M$153.8M2.0M00.00%Unchanged
DEERFIELD MANAGEMENT COMPANY, L.P.
1.64%1.75%#15$157.0M2.0M$148.7M2.0M00.00%Unchanged
AMERICAN CENTURY COMPANIES INC
0.07%0.06%#118$154.4M1.9M$124.9M1.7M+283,273+17.03%Add
BARCLAYS PLC
0.02%0.01%#161$131.1M1.7M$25.5M339,874+1.3M+386.40%Add
FRANKLIN RESOURCES INC
0.03%0.03%#155$128.7M1.6M$118.3M1.6M+48,354+3.07%Add
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
0.02%0.02%#185$127.3M1.6M$118.9M1.6M+21,788+1.38%Add
JANE STREET GROUP, LLC
0.01%0.01%#239$127.1M1.6M$57.1M760,318+842,029+110.75%Add
Pictet Asset Management Holding SA
0.12%0.11%#88$127.0M1.6M$107.1M1.4M+162,003+11.29%Add
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
0.02%0.02%#170$115.3M1.5M$110.8M1.5M-20,960-1.42%Reduce
Polar Capital Holdings Plc
0.27%0.22%#55$115.3M1.5M$62.3M829,511+624,510+75.29%Add
Alyeska Investment Group, L.P.
0.29%0.1%#53$112.4M1.4M$35.5M473,150+944,766+199.68%Add
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
0.15%0.1%#76$103.1M1.3M$59.0M785,281+515,111+65.60%Add
MORGAN STANLEY
0.01%<0.01%#302$101.6M1.3M$77.2M1.2M+101,128+8.57%Add
Invesco Ltd.
0.01%0.01%#280$88.9M1.1M$95.9M1.3M-156,651-12.26%Reduce
VANGUARD FIDUCIARY TRUST CO
0.02%0.02%#177$84.1M1.1M$76.9M1.0M+36,468+3.56%Add
Caption Management, LLC
0.36%0.01%#43$77.5M977,659$1.2M15,591+962,068+6,170.66%Add
Bellevue Group AG
1.62%3.25%#17$77.1M972,258$136.6M1.8M-846,407-46.54%Reduce
GROUPAMA ASSET MANAGMENT
0.95%0.9%#21$75.2M937,083$61.9M824,540+112,543+13.65%Add
NORTHERN TRUST CORP
0.01%0.01%#260$72.4M913,610$65.2M868,179+45,431+5.23%Add
CITADEL ADVISORS LLC
0.01%0.02%#270$67.8M855,284$98.1M1.3M-450,850-34.52%Reduce
Capital International Investors
0.01%#213$65.3M823,764$00+823,764New Buy
Davern Capital Partners, LP
10.8%7.97%#2$63.3M798,709$29.1M386,903+411,806+106.44%Add
BANK OF AMERICA CORP /DE/
<0.01%<0.01%#318$62.7M790,990$63.1M840,598-49,608-5.90%Reduce
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC
1.1%3.74%#19$62.4M787,263$139.2M1.9M-1.1M-57.54%Reduce
GW&K Investment Management, LLC
0.46%0.52%#38$59.2M746,966$58.5M779,349-32,383-4.16%Reduce
BNP Paribas Asset Management Holding S.A.
0.06%#121$58.2M734,219$00+734,219New Buy
Nuveen, LLC
0.01%0.01%#211$57.6M726,282$48.7M648,496+77,786+11.99%Add
Ikarian Capital, LLC
5.89%1.46%#4$55.5M700,000$18.0M239,138+460,862+192.72%Add
Connor, Clark & Lunn Investment Management Ltd.
0.1%0.15%#99$54.3M684,236$65.6M874,089-189,853-21.72%Reduce
Eversept Partners, LP
2.73%2.5%#11$52.7M664,684$47.5M632,100+32,584+5.15%Add
VOLORIDGE INVESTMENT MANAGEMENT, LLC
0.22%0.2%#60$52.0M655,454$50.5M672,858-17,404-2.59%Reduce
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
0.02%0.02%#186$51.7M651,816$50.0M666,116-14,300-2.15%Reduce

🧭 Institutional Sector Flow Heatmap

Net Outflow Net Inflow