Westmount Partners’s Ionis Pharmaceuticals IONS Stock Holding History

Westmount Partners’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	$1.03M	Hold	12,961	–	–	0.22%	93
2026 Q1	$973K	Hold	12,961	–	–	0.24%	84
2025 Q4	$1.03M	Hold	12,961	–	–	0.26%	76
2025 Q3	$853K	Hold	12,961	–	–	0.22%	87
2025 Q2	$512K	Hold	12,961	–	–	0.14%	126
2025 Q1	$391K	Sell	12,961 -501	-4%	-$16.4K	0.12%	149
2024 Q4	$471K	Hold	13,462	–	–	0.14%	123
2024 Q3	$539K	Hold	13,462	–	–	0.16%	108
2024 Q2	$634K	Sell	13,462 -410	-3%	-$16.8K	0.21%	97
2024 Q1	$601K	Hold	13,872	–	–	0.22%	98
2023 Q4	$702K	Buy	13,872 +410	+3%	+$19.6K	0.29%	77
2023 Q3	$611K	Hold	13,462	–	–	0.27%	85
2023 Q2	$552K	Hold	13,462	–	–	0.24%	93
2023 Q1	$481K	Hold	13,462	–	–	0.22%	102
2022 Q4	$508K	Buy	+13,462	New	+$566K	0.26%	92

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

Westmount Partners's IONS Position: Q2 2026 in Review

Westmount Partners held its Ionis Pharmaceuticals (IONS) position steady in Q2 2026 at 12,961 shares worth $1.03M. The position accounts for 0.22% of the portfolio, ranked #93.

Westmount Partners first reported a position in IONS in Q4 2022 and has held it in 15 quarters since. 514 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

Westmount Partners held 12,961 shares of Ionis Pharmaceuticals worth $1.03M as of Q2 2026.
Westmount Partners left its Ionis Pharmaceuticals share count unchanged in Q2 2026.
Ionis Pharmaceuticals made up 0.22% of Westmount Partners's portfolio in Q2 2026, its #93 holding.
Westmount Partners first reported a position in Ionis Pharmaceuticals in Q4 2022 and has held it in 15 quarters since.
514 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Westmount Partners's 13F filing for Q2 2026, filed 7 Jul 2026.