WhaleCreep

Which hedge funds own IONS? IONIS PHARMACEUTICALS INC, Q2 2026 13F holders

HealthcareBiotechnology

64 tracked hedge funds disclosed a position in IONS (IONIS PHARMACEUTICALS INC) in their Q2 2026 13F filings, worth $2.1bn in total. The largest holder by portfolio weight is Tweedy, Browne at 13.7% of its book. 10 opened a new position this quarter: Eagle Health Investments LP, Freestone Grove Partners LP, Militia Capital Management LLC, Y-Intercept (Hong Kong) Ltd. 13 exited: Ikarian Capital, LLC, Ground Swell Capital, LLC, Integral Health Asset Management, LLC.

64
Holders
Tracked managers whose filing for the quarter reports a long equity position in the security.
10
New this quarter
Holders whose previous filing (at most two quarters earlier) did not report the security.
13
Exited this quarter
Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
$53.9m
Inflow, new holders
Combined value of the positions the new holders reported for the quarter.
$31.4m
Outflow, exits
Combined value the exiting managers reported for the security in their previous filing.
$2.1bn
Combined value
Sum of the holders' reported positions in the security.
5.2%
Share of managers holding
Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.

Holders, Q2 2026

64 rows
Tweedy, Browne Long-only investor13.7%$181m2.28m+0.2%held
Boone Capital Management LLC Hedge fund9.6%$41.2m519,977+3.9%added
Exome Asset Management LLC Hedge fund4.3%$7.0m88,177−20%reduced
Eversept Partners, LP Hedge fund2.9%$52.7m664,684+5.2%added
Deep Track Capital, LP Hedge fund2.6%$174m2.20m+13%added
Eagle Health Investments LP Hedge fund2.6%$15.4m194,577–new
Artia Global Partners LP Hedge fund2.2%$11.4m144,3760.0%held
Deerfield Management Company, L.P. Hedge fund1.6%$157m1.98m0.0%held
Summit Partners Public Asset Management, LLC Hedge fund1.6%$62.4m787,263−44%reduced
Polymer Capital Management (HK) LTD Hedge fund1.4%$14.1m177,897+191%added
Tetragon Partners GP Ltd Hedge fund1.3%$7.7m97,173+133%added
Baker Bros. Advisors LP Hedge fund0.8%$162m2.05m0.0%held
Perceptive Advisors LLC Hedge fund0.7%$44.9m566,000+12%added
ADAR1 Capital Management, LLC Hedge fund0.6%$13.2m166,286+3.7%added
Two Sigma Investments, LP Hedge fund0.4%$496m6.25m+6.7%added
CenterBook Partners LP Hedge fund0.3%$7.1m89,280−41%reduced
Braidwell LP Hedge fund0.3%$9.3m116,762−11%reduced
Polar Capital Holdings Plc Hedge fund0.3%$115m1.45m+75%added
Alyeska Investment Group, L.P. Hedge fund0.3%$112m1.42m+200%added
Arrowpoint Investment Partners (Singapore) Pte. Ltd. Hedge fund0.3%$978k12,338−68%reduced
Voloridge Investment Management, LLC Hedge fund0.2%$52.0m655,454−2.6%reduced
Campbell & CO Investment Adviser LLC Hedge fund0.2%$3.9m49,632+1501%added
Capital Fund Management S.A. Hedge fund0.2%$26.1m329,554+132%added
Freestone Grove Partners LP Hedge fund0.2%$27.0m339,967–new
Militia Capital Management LLC Hedge fund0.2%$904k11,400–new
Candriam S.C.A. Hedge fund0.2%$35.3m445,019−8.1%reduced
Edgestream Partners, L.P. Hedge fund0.1%$4.5m56,715−17%reduced
Hillsdale Investment Management Inc. Hedge fund0.1%$5.6m70,9000.0%held
Entropy Technologies, LP Hedge fund0.1%$2.9m36,815+35%added
Aquatic Capital Management LLC Hedge fund0.1%$3.4m42,581−71%reduced
J. Goldman & Co LP Hedge fund0.1%$3.2m40,366−83%reduced
Y-Intercept (Hong Kong) Ltd Hedge fund0.1%$5.3m67,374–new
DeepCurrents Investment Group LLC Hedge fund0.10%$2.9m36,212+32%added
Gsa Capital Partners LLP Hedge fund0.09%$1.4m17,306+446%added
Dark Forest Capital Management LP Hedge fund0.08%$1.2m15,511–new
FORA Capital, LLC Hedge fund0.08%$1.1m13,833−30%reduced
AlphaGrep UK Ltd Hedge fund0.07%$234k2,946–new
Renaissance Technologies LLC Hedge fund0.06%$44.4m559,414+83%added
Hudson Bay Capital Management LP Hedge fund0.05%$11.5m145,000−51%reduced
Qsemble Capital Management, LP Hedge fund0.04%$308k3,887−85%reduced
Graham Capital Management, L.P. Hedge fund0.04%$1.3m16,717–new
Jain Global LLC Hedge fund0.03%$2.6m32,931+25%added
Qube Research & Technologies Ltd Hedge fund0.03%$26.5m333,952+679%added
ExodusPoint Capital Management, LP Hedge fund0.03%$2.8m35,645−84%reduced
Wolverine Asset Management LLC Hedge fund0.02%$1.8m22,340−2.1%reduced
Arrowstreet Capital, Limited Partnership Hedge fund0.02%$50.1m632,028−14%reduced
Montanova Capital, LLC Hedge fund0.02%$856k10,8000.0%held
Boothbay Fund Management, LLC Hedge fund0.02%$936k11,808−85%reduced
Squarepoint Ops LLC Hedge fund0.02%$8.7m109,379−84%reduced
Adage Capital Partners GP, L.L.C. Hedge fund0.02%$11.9m150,000+200%added