Israel Englander’s Ionis Pharmaceuticals IONS Stock Holding History

Israel Englander’s Portfolio IONS Stock Details IONS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$20.4M	Buy	+257,500	New	+$19.4M	0.01%	1604
2021 Q2	–	Sell	-100,000	Closed	-$4.5M	–	6771
2021 Q1	$4.5M	Buy	+100,000	New	+$5.58M	﹤0.01%	2693
2020 Q1	–	Sell	-100,000	Closed	-$6.04M	–	4162
2019 Q4	$6.04M	Sell	100,000 -50,000	-33%	-$2.98M	0.01%	1765
2019 Q3	$8.99M	Buy	+150,000	New	+$9.78M	0.01%	1350
2017 Q2	–	Sell	-565,900	Closed	-$22.7M	–	3633
2017 Q1	$22.7M	Buy	+565,900	New	+$25.4M	0.04%	609
2015 Q2	–	Sell	-11,700	Closed	-$745K	–	3573
2015 Q1	$745K	Buy	+11,700	New	+$794K	﹤0.01%	2496
2014 Q1	–	Sell	-9,300	Closed	-$371K	–	3676
2013 Q4	$371K	Buy	+9,300	New	+$331K	﹤0.01%	2911

Other funds holding IONS

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Israel Englander's IONS Position: Q2 2026 in Review

Israel Englander reduced its Ionis Pharmaceuticals (IONS) stake by 73% in Q2 2026, selling an estimated $57.4M and leaving 288,872 shares worth $22.9M. The position accounts for 0.01% of the portfolio, ranked #1507.

Israel Englander first reported a position in IONS in Q2 2013 and has held it in 49 quarters since. The position peaked at $105M in Q2 2025. 510 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

Israel Englander held 288,872 shares of Ionis Pharmaceuticals worth $22.9M as of Q2 2026.
Israel Englander sold 762,634 Ionis Pharmaceuticals shares in Q2 2026, an estimated $57.4M.
Ionis Pharmaceuticals made up 0.01% of Israel Englander's portfolio in Q2 2026, its #1507 holding.
Israel Englander first reported a position in Ionis Pharmaceuticals in Q2 2013 and has held it in 49 quarters since.
Israel Englander's Ionis Pharmaceuticals position peaked at $105M in Q2 2025.
510 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.