MF
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Magnetar Financial’s Interactive Brokers IBKR Stock Holding History

Magnetar Financial’s Portfolio IBKR Stock Details IBKR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		– Sell
-26,874
Closed -$1.73M – 1265
2025
Q4 		$1.73M Buy
+26,874
New +$1.8M 0.02% 368
2025
Q2 		– Sell
-138,016
Closed -$5.71M – 995
2025
Q1 		$5.71M Buy
+138,016
New +$6.84M 0.08% 166
2023
Q4 		– Sell
-30,140
Closed -$652K – 451
2023
Q3 		$652K Buy
+30,140
New +$671K 0.02% 296
2021
Q3 		– Sell
-88,896
Closed -$1.46K – 1405
2021
Q2 		$1.46K Buy
+88,896
New +$1.54M 0.01% 640
2020
Q3 		– Sell
-19,996
Closed -$209K – 687
2020
Q2 		$209K Buy
+19,996
New +$209K 0.01% 394

Other funds holding IBKR

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
CCM
Cantillon Capital Management New York $15.1B AUM 23.54% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return
GWM
Greenwich Wealth Management Greenwich, Connecticut $2.45B AUM 39.53% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Magnetar Financial's IBKR Position: Q1 2026 in Review

Magnetar Financial sold out of Interactive Brokers (IBKR) in Q1 2026, closing a stake of 26,874 shares — an estimated $1.73M sold.

Magnetar Financial first reported a position in IBKR in Q2 2020 and held it in 5 quarters. The position peaked at $5.71M in Q1 2025. 993 funds tracked by Wall St. Rank hold IBKR as of Q1 2026.

  • Magnetar Financial reported no remaining Interactive Brokers position as of Q1 2026 after selling out during the quarter.
  • Magnetar Financial sold 26,874 Interactive Brokers shares in Q1 2026, an estimated $1.73M.
  • Magnetar Financial first reported a position in Interactive Brokers in Q2 2020 and held it in 5 quarters.
  • Magnetar Financial's Interactive Brokers position peaked at $5.71M in Q1 2025.
  • 993 funds tracked by Wall St. Rank held Interactive Brokers as of Q1 2026.

Based on Magnetar Financial's 13F filing for Q1 2026, filed 13 May 2026.