Brown Advisory
IONS icon

Brown Advisory’s Ionis Pharmaceuticals IONS Stock Holding History

Brown Advisory’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 		$1.26M Buy
15,846
+741
+5% +$55.8K ﹤0.01% 835
2026
Q1 		$1.13M Buy
15,105
+140
+0.9% +$11K ﹤0.01% 810
2025
Q4 		$1.18M Buy
14,965
+939
+7% +$70.7K ﹤0.01% 798
2025
Q3 		$918K Buy
14,026
+1,835
+15% +$89.6K ﹤0.01% 852
2025
Q2 		$482K Buy
12,191
+165
+1% +$5.4K ﹤0.01% 1024
2025
Q1 		$363K Sell
12,026
-704
-6% -$23.1K ﹤0.01% 1079
2024
Q4 		$445K Sell
12,730
-16
-0.1% -$598 ﹤0.01% 1050
2024
Q3 		$511K Buy
12,746
+1,780
+16% +$82.8K ﹤0.01% 991
2024
Q2 		$523K Sell
10,966
-156
-1% -$6.4K ﹤0.01% 947
2024
Q1 		$482K Sell
11,122
-422
-4% -$20.1K ﹤0.01% 954
2023
Q4 		$584K Sell
11,544
-181
-2% -$8.67K ﹤0.01% 894
2023
Q3 		$532K Buy
11,725
+138
+1% +$5.69K ﹤0.01% 890
2023
Q2 		$475K Buy
11,587
+126
+1% +$4.84K ﹤0.01% 920
2023
Q1 		$410K Sell
11,461
-70
-0.6% -$2.63K ﹤0.01% 964
2022
Q4 		$436K Buy
11,531
+901
+8% +$37.9K ﹤0.01% 939
2022
Q3 		$470K Buy
10,630
+1,000
+10% +$42.1K ﹤0.01% 872
2022
Q2 		$357K Buy
+9,630
New +$363K ﹤0.01% 919
2016
Q2 		– Sell
-5,369
Closed -$218K – 1070
2016
Q1 		$218K Sell
5,369
-11
-0.2% -$447 ﹤0.01% 907
2015
Q4 		$333K Sell
5,380
-467
-8% -$25.2K ﹤0.01% 770
2015
Q3 		$237K Buy
+5,847
New +$303K ﹤0.01% 848
2015
Q2 		– Sell
-5,665
Closed -$361K – 893
2015
Q1 		$361K Buy
5,665
+80
+1% +$5.43K ﹤0.01% 772
2014
Q4 		$345K Buy
+5,585
New +$276K ﹤0.01% 773

Other funds holding IONS

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Royal Bank of Canada
Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Brown Advisory's IONS Position: Q2 2026 in Review

Brown Advisory increased its Ionis Pharmaceuticals (IONS) stake by 4.9% in Q2 2026, buying an estimated $55.8K and bringing the position to 15,846 shares worth $1.26M. The position accounts for ﹤0.01% of the portfolio, ranked #835.

Brown Advisory first reported a position in IONS in Q4 2014 and has held it in 22 quarters since. 514 funds tracked by Wall St. Rank hold IONS as of Q2 2026.

  • Brown Advisory held 15,846 shares of Ionis Pharmaceuticals worth $1.26M as of Q2 2026.
  • Brown Advisory bought 741 Ionis Pharmaceuticals shares in Q2 2026, an estimated $55.8K.
  • Ionis Pharmaceuticals made up ﹤0.01% of Brown Advisory's portfolio in Q2 2026, its #835 holding.
  • Brown Advisory first reported a position in Ionis Pharmaceuticals in Q4 2014 and has held it in 22 quarters since.
  • 514 funds tracked by Wall St. Rank held Ionis Pharmaceuticals as of Q2 2026.

Based on Brown Advisory's 13F filing for Q2 2026, filed 14 Aug 2026.