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Campbell & Co Investment Adviser’s Ionis Pharmaceuticals IONS Stock Holding History

Campbell & Co Investment Adviser’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 		$3.94M Buy
49,632
+46,531
+1,501% +$3.5M 0.21% 128
2026
Q1 		$233K Buy
3,101
+317
+11% +$25K 0.01% 939
2025
Q4 		$220K Buy
+2,784
New +$210K 0.01% 1041
2025
Q1 		– Sell
-15,681
Closed -$548K – 1168
2024
Q4 		$548K Buy
+15,681
New +$586K 0.04% 625
2024
Q2 		– Sell
-94,772
Closed -$4.11M – 1180
2024
Q1 		$4.11M Buy
+94,772
New +$4.52M 0.35% 29
2023
Q4 		– Sell
-16,547
Closed -$751K – 1204
2023
Q3 		$751K Buy
+16,547
New +$683K 0.09% 368
2023
Q1 		– Sell
-15,018
Closed -$567K – 916
2022
Q4 		$567K Buy
+15,018
New +$632K 0.14% 252
2022
Q3 		– Sell
-11,299
Closed -$418K – 805
2022
Q2 		$418K Buy
+11,299
New +$426K 0.11% 336
2022
Q1 		– Sell
-17,346
Closed -$528K – 786
2021
Q4 		$528K Sell
17,346
-2,550
-13% -$80.3K 0.18% 181
2021
Q3 		$667K Buy
+19,896
New +$750K 0.22% 140
2020
Q1 		– Sell
-16,311
Closed -$985K – 261
2019
Q4 		$985K Buy
+16,311
New +$972K 0.3% 64
2019
Q3 		– Sell
-5,681
Closed -$365K – 672
2019
Q2 		$365K Buy
+5,681
New +$402K 0.17% 241
2017
Q3 		– Sell
-6,059
Closed -$308K – 407
2017
Q2 		$308K Buy
+6,059
New +$282K 0.29% 136

Other funds holding IONS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
TBC
Tweedy, Browne Co Stamford, Connecticut $1.32B AUM 32.9% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
TCM
TimesSquare Capital Management New York $6.8B AUM 45.85% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
New York State Common Retirement Fund
New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return
PA
Pinnacle Associates New York $9.16B AUM 63.5% 1-Year Est. Return
Handelsbanken Fonder
Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return

Campbell & Co Investment Adviser's IONS Position: Q2 2026 in Review

Campbell & Co Investment Adviser increased its Ionis Pharmaceuticals (IONS) stake by 1,501% in Q2 2026, buying an estimated $3.5M and bringing the position to 49,632 shares worth $3.94M. The position accounts for 0.21% of the portfolio, ranked #128.

Campbell & Co Investment Adviser first reported a position in IONS in Q2 2017 and has held it in 13 quarters since. The position peaked at $4.11M in Q1 2024. 218 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

  • Campbell & Co Investment Adviser held 49,632 shares of Ionis Pharmaceuticals worth $3.94M as of Q2 2026.
  • Campbell & Co Investment Adviser bought 46,531 Ionis Pharmaceuticals shares in Q2 2026, an estimated $3.5M.
  • Ionis Pharmaceuticals made up 0.21% of Campbell & Co Investment Adviser's portfolio in Q2 2026, its #128 holding.
  • Campbell & Co Investment Adviser first reported a position in Ionis Pharmaceuticals in Q2 2017 and has held it in 13 quarters since.
  • Campbell & Co Investment Adviser's Ionis Pharmaceuticals position peaked at $4.11M in Q1 2024.
  • 218 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Campbell & Co Investment Adviser's 13F filing for Q2 2026, filed 3 Aug 2026.