CenterBook Partners
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CenterBook Partners’s Ionis Pharmaceuticals IONS Stock Holding History

CenterBook 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
Q3 		$5.01M Buy
112,240
+22,960
+26% +$1.3M 0.23% 111
2026
Q2 		$7.08M Sell
89,280
-61,632
-41% -$4.64M 0.35% 62
2026
Q1 		$11.3M Sell
150,912
-3,037
-2% -$240K 0.61% 33
2025
Q4 		$12.2M Buy
+153,949
New +$11.6M 0.6% 34

Other funds holding IONS

Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $106B AUM 32.76% 1-Year Est. Return
Pinnacle Associates
Pinnacle Associates New York $8.92B AUM 43.91% 1-Year Est. Return
Privium Fund Management
Privium Fund Management Amsterdam, Netherlands $516M AUM 18.66% 1-Year Est. Return
Nippon Life Global Investors Americas
Nippon Life Global Investors Americas New York $2.51B AUM 38.65% 1-Year Est. Return
Sicart Associates
Sicart Associates New York $413M AUM 28.3% 1-Year Est. Return
Y-Intercept (HK)
Y-Intercept (HK) Hong Kong $4.52B AUM 6.6% 1-Year Est. Return
China Universal Asset Management Company
China Universal Asset Management Company Shanghai, China $1.92B AUM 74.14% 1-Year Est. Return
Motley Fool Asset Management
Motley Fool Asset Management Alexandria, Virginia $2.64B AUM 26.58% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $174B AUM 33.96% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return

CenterBook Partners's IONS Position: Q3 2026 in Review

CenterBook Partners increased its Ionis Pharmaceuticals (IONS) stake by 26% in Q3 2026, buying an estimated $1.3M and bringing the position to 112,240 shares worth $5.01M. The position accounts for 0.23% of the portfolio, ranked #111.

CenterBook Partners first reported a position in IONS in Q4 2025 and has held it in 4 quarters since. The position peaked at $12.2M in Q4 2025. 131 funds tracked by Wall St. Rank hold IONS as of Q3 2026.

  • CenterBook Partners held 112,240 shares of Ionis Pharmaceuticals worth $5.01M as of Q3 2026.
  • CenterBook Partners bought 22,960 Ionis Pharmaceuticals shares in Q3 2026, an estimated $1.3M.
  • Ionis Pharmaceuticals made up 0.23% of CenterBook Partners's portfolio in Q3 2026, its #111 holding.
  • CenterBook Partners first reported a position in Ionis Pharmaceuticals in Q4 2025 and has held it in 4 quarters since.
  • CenterBook Partners's Ionis Pharmaceuticals position peaked at $12.2M in Q4 2025.
  • 131 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q3 2026.

Based on CenterBook Partners's 13F filing for Q3 2026, filed 2 Nov 2026.