Interactive Brokers (IBKR) went public on May 4, 2007, when it opened at a split-adjusted price of $8.20.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
May 2026 | $79.75 | $87.37 | $78.92 | $84.59 | 32,424,510 |
April 2026 | $68.38 | $82.88 | $65.40 | $79.50 | 97,327,300 |
March 2026 | $69.22 | $73.38 | $63.02 | $67.07 | 109,692,400 |
February 2026 | $74.61 | $79.10 | $68.94 | $71.19 | 93,941,900 |
January 2026 | $65.34 | $78.72 | $64.98 | $74.80 | 106,614,000 |
December 2025 | $64.16 | $67.06 | $62.03 | $64.24 | 75,249,800 |
November 2025 | $70.73 | $73.10 | $58.81 | $64.87 | 82,566,500 |
October 2025 | $67.70 | $73.18 | $64.00 | $70.20 | 110,608,100 |
September 2025 | $61.16 | $70.11 | $59.80 | $68.65 | 111,227,300 |
August 2025 | $63.48 | $67.83 | $59.85 | $62.10 | 197,721,700 |
July 2025 | $55.37 | $66.58 | $52.95 | $65.33 | 129,836,100 |
June 2025 | $52.05 | $55.42 | $48.97 | $55.21 | 104,651,100 |
May 2025 | $43.02 | $53.32 | $42.93 | $52.23 | 103,608,400 |
April 2025 | $41.19 | $44.22 | $32.69 | $42.79 | 206,862,800 |
March 2025 | $52.08 | $52.70 | $39.15 | $41.23 | 212,050,400 |
February 2025 | $52.38 | $58.88 | $49.51 | $50.90 | 168,265,200 |
January 2025 | $44.21 | $55.04 | $43.21 | $54.13 | 135,494,800 |
December 2024 | $47.71 | $48.15 | $42.59 | $43.98 | 90,000,800 |
November 2024 | $38.01 | $48.13 | $37.84 | $47.57 | 89,774,800 |
October 2024 | $34.58 | $38.51 | $33.75 | $37.97 | 89,721,600 |
September 2024 | $31.88 | $34.70 | $29.87 | $34.68 | 71,234,400 |
August 2024 | $29.85 | $32.10 | $25.79 | $32.07 | 74,999,200 |
July 2024 | $30.86 | $32.09 | $28.92 | $29.67 | 92,357,200 |
June 2024 | $31.42 | $31.69 | $29.39 | $30.49 | 58,196,000 |
May 2024 | $28.68 | $32.12 | $28.57 | $31.27 | 73,034,000 |