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 Q2	$1.23M	Buy	+15,511	New	+$1.17M	0.08%	441
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 $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

Dark Forest Capital Management's IONS Position: Q2 2026 in Review

Dark Forest Capital Management opened a new position in Ionis Pharmaceuticals (IONS) in Q2 2026: 15,511 shares worth $1.23M. The stake represents 0.08% of the portfolio and ranks #441 among its holdings. This is a return to the name: Dark Forest Capital Management previously reported a position in IONS as recently as Q4 2025.

Dark Forest Capital Management first reported a position in IONS in Q2 2021 and has held it in 7 quarters since. The position peaked at $3.02M in Q3 2025. 514 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

Dark Forest Capital Management held 15,511 shares of Ionis Pharmaceuticals worth $1.23M as of Q2 2026.
Ionis Pharmaceuticals was a new Dark Forest Capital Management position in Q2 2026.
Ionis Pharmaceuticals made up 0.08% of Dark Forest Capital Management's portfolio in Q2 2026, its #441 holding.
Dark Forest Capital Management first reported a position in Ionis Pharmaceuticals in Q2 2021 and has held it in 7 quarters since.
Dark Forest Capital Management's Ionis Pharmaceuticals position peaked at $3.02M in Q3 2025.
514 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

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