Interactive Brokers Group, Inc. historical data

Date	Open	High	Low	Close	Adj. close	Volume
2026-10-16	86.260	86.950	82.250	82.690	82.690	7,273,000
2026-10-15	82.750	86.220	81.040	86.030	86.030	5,838,600
2026-10-14	86.020	86.840	83.620	84.140	84.140	4,562,600
2026-10-13	87.700	88.020	86.090	87.490	87.490	2,887,500
2026-10-12	88.220	89.110	87.720	87.890	87.890	3,016,400
2026-10-09	87.050	88.280	86.470	87.870	87.870	2,424,500
2026-10-08	87.110	87.790	86.280	86.470	86.470	2,997,200
2026-10-07	88.700	89.110	85.970	87.740	87.740	3,649,800
2026-10-06	89.380	91.850	89.060	90.580	90.580	3,416,300
2026-10-05	88.870	89.560	88.090	89.050	89.050	2,935,400
2026-10-02	86.550	88.920	86.550	88.300	88.300	4,871,400
2026-10-01	85.420	87.250	83.600	85.810	85.810	5,716,600
2026-09-30	86.630	86.930	85.390	85.420	85.420	4,050,500
2026-09-29	87.860	87.860	85.890	86.180	86.180	2,832,300
2026-09-28	87.800	88.500	86.810	87.080	87.080	3,831,900
2026-09-25	90.000	90.570	88.530	89.240	89.240	2,893,800
2026-09-24	90.530	91.190	89.100	89.820	89.820	3,977,300
2026-09-23	91.360	93.530	90.920	91.560	91.560	3,960,800
2026-09-22	92.850	93.200	89.710	91.880	91.880	4,059,000
2026-09-21	92.500	93.940	91.580	93.210	93.210	3,473,500
2026-09-18	89.910	91.060	88.750	90.690	90.690	6,224,200

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Stock splits

Date	Split (new : old)
2025-06-18	4:1

Open, high, low and close are as traded (USD). Adjusted close accounts for splits and dividends. Educational only, not financial advice.