O'Shaughnessy Asset Management’s Ionis Pharmaceuticals IONS Stock Holding History

O'Shaughnessy Asset Management’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	$568K	Sell	7,166 -521	-7%	-$39.2K	﹤0.01%	1541
2026 Q1	$577K	Buy	7,687 +655	+9%	+$51.7K	﹤0.01%	1460
2025 Q4	$556K	Buy	7,032 +1,735	+33%	+$131K	﹤0.01%	1443
2025 Q3	$347K	Buy	+5,297	New	+$259K	﹤0.01%	1677
2024 Q4	–	Sell	-5,273	Closed	-$204K	–	2243
2024 Q3	$204K	Buy	+5,273	New	+$245K	﹤0.01%	1680
2021 Q4	–	Sell	-243	Closed	-$8K	–	1834
2021 Q3	$8K	Sell	243 -42	-15%	-$1.58K	﹤0.01%	2216
2021 Q2	$11K	Buy	285 +20	+8%	+$783	﹤0.01%	1980
2021 Q1	$12K	Buy	265 +8	+3%	+$446	﹤0.01%	1754
2020 Q4	$15K	Buy	257 +188	+272%	+$9.37K	﹤0.01%	1468
2020 Q3	$3K	Sell	69 -257	-79%	-$14.3K	﹤0.01%	1572
2020 Q2	$19K	Buy	+326	New	+$18.1K	﹤0.01%	1151
2020 Q1	–	Sell	-106	Closed	-$6K	–	1526
2019 Q4	$6K	Buy	+106	New	+$6.32K	﹤0.01%	1414

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 $3.38T AUM 44.17% 1-Year Est. Return

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

O'Shaughnessy Asset Management's IONS Position: Q2 2026 in Review

O'Shaughnessy Asset Management reduced its Ionis Pharmaceuticals (IONS) stake by 6.8% in Q2 2026, selling an estimated $39.2K and leaving 7,166 shares worth $568K. The position accounts for ﹤0.01% of the portfolio, ranked #1541.

O'Shaughnessy Asset Management first reported a position in IONS in Q4 2019 and has held it in 12 quarters since. The position peaked at $577K in Q1 2026. 515 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

O'Shaughnessy Asset Management held 7,166 shares of Ionis Pharmaceuticals worth $568K as of Q2 2026.
O'Shaughnessy Asset Management sold 521 Ionis Pharmaceuticals shares in Q2 2026, an estimated $39.2K.
Ionis Pharmaceuticals made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q2 2026, its #1541 holding.
O'Shaughnessy Asset Management first reported a position in Ionis Pharmaceuticals in Q4 2019 and has held it in 12 quarters since.
O'Shaughnessy Asset Management's Ionis Pharmaceuticals position peaked at $577K in Q1 2026.
515 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.