Deep Track Capital’s Ionis Pharmaceuticals IONS Stock Holding History

Deep Track Capital’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	$174M	Buy	2,200,000 +250,000	+13%	+$18.8M	2.54%	15
2026 Q1	$146M	Buy	1,950,000 +250,000	+15%	+$19.7M	2.39%	12
2025 Q4	$134M	Sell	1,700,000 -2,108,144	-55%	-$159M	2.4%	14
2025 Q3	$249M	Sell	3,808,144 -1,083,400	-22%	-$52.9M	6.95%	2
2025 Q2	$193M	Buy	4,891,544 +327,337	+7%	+$10.7M	6.2%	2
2025 Q1	$138M	Buy	4,564,207 +2,630,279	+136%	+$86.1M	4.46%	6
2024 Q4	$67.6M	Sell	1,933,928 -266,072	-12%	-$9.95M	2.52%	12
2024 Q3	$88.1M	Buy	2,200,000 +200,000	+10%	+$9.31M	2.8%	13
2024 Q2	$95.3M	Buy	2,000,000 +626,525	+46%	+$25.7M	2.85%	13
2024 Q1	$59.5M	Buy	1,373,475 +124,407	+10%	+$5.93M	1.71%	23
2023 Q4	$63.2M	Sell	1,249,068 -1,585,001	-56%	-$75.9M	2.11%	18
2023 Q3	$129M	Hold	2,834,069	–	–	4.96%	4
2023 Q2	$116M	Hold	2,834,069	–	–	5.38%	3
2023 Q1	$101M	Buy	2,834,069 +1,628,296	+135%	+$61.1M	4.16%	6
2022 Q4	$45.5M	Buy	+1,205,773	New	+$50.7M	1.91%	21

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

Deep Track Capital's IONS Position: Q2 2026 in Review

Deep Track Capital increased its Ionis Pharmaceuticals (IONS) stake by 13% in Q2 2026, buying an estimated $18.8M and bringing the position to 2,200,000 shares worth $174M. The position accounts for 2.54% of the portfolio, ranked #15.

Deep Track Capital first reported a position in IONS in Q4 2022 and has held it in 15 quarters since. The position peaked at $249M in Q3 2025. 514 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

Deep Track Capital held 2,200,000 shares of Ionis Pharmaceuticals worth $174M as of Q2 2026.
Deep Track Capital bought 250,000 Ionis Pharmaceuticals shares in Q2 2026, an estimated $18.8M.
Ionis Pharmaceuticals made up 2.54% of Deep Track Capital's portfolio in Q2 2026, its #15 holding.
Deep Track Capital first reported a position in Ionis Pharmaceuticals in Q4 2022 and has held it in 15 quarters since.
Deep Track Capital's Ionis Pharmaceuticals position peaked at $249M in Q3 2025.
514 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Deep Track Capital's 13F filing for Q2 2026, filed 14 Aug 2026.