Dark Forest Capital Management’s Ionis Pharmaceuticals IONS Stock Holding History

Dark Forest Capital 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 Q1	–	Sell	-12,691	Closed	-$1M	–	961
2025 Q4	$1M	Sell	12,691 -33,401	-72%	-$2.52M	0.05%	649
2025 Q3	$3.02M	Buy	+46,092	New	+$2.25M	0.11%	291
2022 Q2	–	Sell	-49	Closed	-$2K	–	1115
2022 Q1	$2K	Buy	49 +46	+1,533%	+$1.51K	﹤0.01%	1162
2021 Q4	$0	Sell	3 -335	-99%	-$10.5K	﹤0.01%	1594
2021 Q3	$11K	Sell	338 -972	-74%	-$36.6K	﹤0.01%	973
2021 Q2	$52K	Buy	+1,310	New	+$51.3K	0.02%	442

Other funds holding IONS

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Dark Forest Capital Management's IONS Position: Q1 2026 in Review

Dark Forest Capital Management sold out of Ionis Pharmaceuticals (IONS) in Q1 2026, closing a stake of 12,691 shares — an estimated $1M sold.

Dark Forest Capital Management first reported a position in IONS in Q2 2021 and held it in 6 quarters. The position peaked at $3.02M in Q3 2025. 493 funds tracked by Wall St. Rank hold IONS as of Q1 2026.

Dark Forest Capital Management reported no remaining Ionis Pharmaceuticals position as of Q1 2026 after selling out during the quarter.
Dark Forest Capital Management sold 12,691 Ionis Pharmaceuticals shares in Q1 2026, an estimated $1M.
Dark Forest Capital Management first reported a position in Ionis Pharmaceuticals in Q2 2021 and held it in 6 quarters.
Dark Forest Capital Management's Ionis Pharmaceuticals position peaked at $3.02M in Q3 2025.
493 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q1 2026.

Based on Dark Forest Capital Management's 13F filing for Q1 2026, filed 15 May 2026.