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Cantillon Capital Management’s Interactive Brokers IBKR Stock Holding History

Cantillon Capital Management’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
Q2 		$45.1M Sell
517,833
-10,728,048
-95% -$893M 6.78% 4
2026
Q1 		$754M Sell
11,245,881
-1,514,023
-12% -$108M 5.01% 4
2025
Q4 		$821M Buy
12,759,904
+95,878
+0.8% +$6.42M 4.44% 5
2025
Q3 		$871M Sell
12,664,026
-139,605
-1% -$8.78M 4.8% 3
2025
Q2 		$709M Sell
12,803,631
-371,673
-3% -$17.6M 4.1% 4
2025
Q1 		$545M Sell
13,175,304
-407,456
-3% -$20.2M 3.53% 7
2024
Q4 		$600M Buy
13,582,760
+72,188
+0.5% +$3.04M 3.63% 7
2024
Q3 		$471M Sell
13,510,572
-403,728
-3% -$12.5M 2.88% 15
2024
Q2 		$426M Sell
13,914,300
-708,516
-5% -$21.1M 2.85% 14
2024
Q1 		$408M Sell
14,622,816
-292,660
-2% -$7.29M 2.57% 18
2023
Q4 		$309M Sell
14,915,476
-363,040
-2% -$7.43M 2.07% 25
2023
Q3 		$331M Sell
15,278,516
-59,356
-0.4% -$1.32M 2.45% 21
2023
Q2 		$319M Buy
15,337,872
+920,272
+6% +$18.2M 2.23% 27
2023
Q1 		$298M Buy
14,417,600
+1,536,744
+12% +$31.3M 2.42% 21
2022
Q4 		$233M Buy
12,880,856
+2,997,368
+30% +$56M 1.97% 28
2022
Q3 		$158M Sell
9,883,488
-88,156
-0.9% -$1.36M 1.43% 32
2022
Q2 		$137M Buy
9,971,644
+1,073,632
+12% +$15.9M 1.14% 35
2022
Q1 		$147M Buy
8,898,012
+248,044
+3% +$4.27M 1.05% 35
2021
Q4 		$172M Sell
8,649,968
-653,304
-7% -$12.2M 1.13% 34
2021
Q3 		$145M Sell
9,303,272
-132,992
-1% -$2.09M 0.99% 36
2021
Q2 		$155M Sell
9,436,264
-152,848
-2% -$2.64M 1.04% 34
2021
Q1 		$175M Sell
9,589,112
-324,572
-3% -$5.85M 1.27% 32
2020
Q4 		$151M Sell
9,913,684
-40,104
-0.4% -$531K 1.13% 31
2020
Q3 		$120M Sell
9,953,788
-102,544
-1% -$1.28M 1.01% 32
2020
Q2 		$105M Buy
10,056,332
+75,172
+0.8% +$786K 0.91% 34
2020
Q1 		$108M Sell
9,981,160
-28,592
-0.3% -$346K 1.19% 31
2019
Q4 		$117M Sell
10,009,752
-211,084
-2% -$2.48M 1.08% 33
2019
Q3 		$137M Sell
10,220,836
-73,624
-0.7% -$916K 1.34% 28
2019
Q2 		$139M Sell
10,294,460
-180,092
-2% -$2.44M 1.41% 28
2019
Q1 		$136M Sell
10,474,552
-81,128
-0.8% -$1.07M 1.44% 29
2018
Q4 		$144M Buy
10,555,680
+94,380
+0.9% +$1.26M 1.74% 27
2018
Q3 		$145M Buy
10,461,300
+567,152
+6% +$8.6M 1.63% 29
2018
Q2 		$159M Sell
9,894,148
-270,828
-3% -$4.9M 1.72% 26
2018
Q1 		$171M Buy
10,164,976
+2,004,764
+25% +$33.2M 1.94% 24
2017
Q4 		$121M Sell
8,160,212
-422,848
-5% -$5.76M 1.43% 27
2017
Q3 		$96.6M Buy
8,583,060
+879,496
+11% +$8.97M 1.12% 29
2017
Q2 		$72.1M Buy
+7,703,564
New +$68.4M 0.9% 29

Other funds holding IBKR

Ninety One (UK)
Ninety One (UK) London, United Kingdom $44.7B AUM 17.24% 1-Year Est. Return
ECU
Egerton Capital (UK) London, United Kingdom $10.4B AUM 25.66% 1-Year Est. Return
TD Asset Management
TD Asset Management Toronto, Ontario, Canada $115B AUM 41.58% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
KBC Group
KBC Group Brussels, Belgium $46.3B AUM 43.9% 1-Year Est. Return
CAM
Congress Asset Management Boston, Massachusetts $16.3B AUM 42.69% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
Russell Investments Group
Russell Investments Group London, United Kingdom $114B AUM 41.71% 1-Year Est. Return
HP
Hosking Partners London, United Kingdom $3.01B AUM 83.99% 1-Year Est. Return
PAM
Panagora Asset Management Boston, Massachusetts $32.6B AUM 52.29% 1-Year Est. Return

Cantillon Capital Management's IBKR Position: Q2 2026 in Review

Cantillon Capital Management reduced its Interactive Brokers (IBKR) stake by 95% in Q2 2026, selling an estimated $893M and leaving 517,833 shares worth $45.1M. The position accounts for 6.78% of the portfolio, ranked #4.

Cantillon Capital Management first reported a position in IBKR in Q2 2017 and has held it in 37 quarters since. The position peaked at $871M in Q3 2025. 514 funds tracked by Wall St. Rank hold IBKR as of Q2 2026.

  • Cantillon Capital Management held 517,833 shares of Interactive Brokers worth $45.1M as of Q2 2026.
  • Cantillon Capital Management sold 10,728,048 Interactive Brokers shares in Q2 2026, an estimated $893M.
  • Interactive Brokers made up 6.78% of Cantillon Capital Management's portfolio in Q2 2026, its #4 holding.
  • Cantillon Capital Management first reported a position in Interactive Brokers in Q2 2017 and has held it in 37 quarters since.
  • Cantillon Capital Management's Interactive Brokers position peaked at $871M in Q3 2025.
  • 514 funds tracked by Wall St. Rank held Interactive Brokers as of Q2 2026.

Based on Cantillon Capital Management's 13F filing for Q2 2026, filed 29 Jul 2026.