Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2012-01-09 | 32.920 | 33.000 | 32.710 | 32.960 | 24.039 | 329,600 |
| 2012-01-06 | 32.860 | 33.000 | 32.510 | 32.910 | 24.002 | 427,800 |
| 2012-01-05 | 32.600 | 32.860 | 32.010 | 32.840 | 23.951 | 751,000 |
| 2012-01-04 | 33.270 | 33.270 | 32.640 | 32.760 | 23.893 | 583,000 |
| 2012-01-03 | 33.720 | 33.890 | 33.220 | 33.290 | 24.279 | 705,700 |
| 2011-12-30 | 33.720 | 33.720 | 33.430 | 33.440 | 24.389 | 359,200 |
| 2011-12-29 | 33.570 | 33.680 | 33.480 | 33.680 | 24.564 | 331,800 |
| 2011-12-28 | 33.550 | 33.610 | 33.420 | 33.430 | 24.382 | 448,000 |
| 2011-12-27 | 33.600 | 33.990 | 33.600 | 33.820 | 24.425 | 340,100 |
| 2011-12-23 | 33.510 | 33.820 | 33.470 | 33.800 | 24.411 | 253,300 |
| 2011-12-22 | 33.250 | 33.520 | 33.100 | 33.480 | 24.180 | 485,200 |
| 2011-12-21 | 33.000 | 33.290 | 32.860 | 33.200 | 23.978 | 707,200 |
| 2011-12-20 | 32.650 | 33.000 | 32.490 | 32.980 | 23.819 | 766,700 |
| 2011-12-19 | 32.590 | 32.790 | 32.100 | 32.200 | 23.255 | 497,700 |
| 2011-12-16 | 32.730 | 32.750 | 32.360 | 32.520 | 23.486 | 1,134,100 |
| 2011-12-15 | 32.650 | 32.790 | 32.410 | 32.600 | 23.544 | 1,027,300 |
| 2011-12-14 | 32.150 | 32.560 | 32.140 | 32.450 | 23.436 | 753,900 |
| 2011-12-13 | 32.400 | 32.620 | 32.250 | 32.400 | 23.400 | 934,600 |
| 2011-12-12 | 32.250 | 32.250 | 31.930 | 32.190 | 23.248 | 755,700 |
| 2011-12-09 | 32.150 | 32.590 | 32.150 | 32.530 | 23.494 | 744,000 |
| 2011-12-08 | 31.890 | 32.220 | 31.820 | 32.020 | 23.125 | 980,800 |
| 2011-12-07 | 31.690 | 32.170 | 31.600 | 32.130 | 23.205 | 709,100 |
| 2011-12-06 | 31.840 | 32.080 | 31.690 | 31.890 | 23.031 | 421,900 |
| 2011-12-05 | 31.930 | 32.170 | 31.640 | 31.940 | 23.068 | 911,900 |
| 2011-12-02 | 31.400 | 31.750 | 31.280 | 31.640 | 22.851 | 771,200 |
| 2011-12-01 | 30.860 | 31.350 | 30.710 | 31.180 | 22.519 | 811,700 |
| 2011-11-30 | 30.890 | 31.020 | 30.460 | 30.980 | 22.374 | 1,278,200 |
| 2011-11-29 | 30.100 | 30.120 | 29.790 | 29.810 | 21.529 | 645,600 |
| 2011-11-28 | 30.280 | 30.280 | 29.800 | 29.980 | 21.652 | 993,200 |
| 2011-11-25 | 29.250 | 29.700 | 29.220 | 29.530 | 21.327 | 218,000 |
| 2011-11-23 | 29.700 | 29.720 | 29.310 | 29.360 | 21.204 | 656,300 |
| 2011-11-22 | 29.910 | 30.140 | 29.690 | 29.900 | 21.594 | 1,429,200 |
| 2011-11-21 | 29.950 | 30.110 | 29.590 | 29.860 | 21.565 | 749,800 |
| 2011-11-18 | 30.500 | 30.550 | 30.130 | 30.350 | 21.919 | 542,500 |
| 2011-11-17 | 30.940 | 30.950 | 30.190 | 30.300 | 21.883 | 836,500 |
| 2011-11-16 | 30.900 | 31.370 | 30.800 | 30.940 | 22.345 | 1,142,900 |
| 2011-11-15 | 31.000 | 31.350 | 30.880 | 31.170 | 22.511 | 670,600 |
| 2011-11-14 | 31.040 | 31.180 | 30.870 | 31.050 | 22.425 | 816,400 |
| 2011-11-11 | 31.070 | 31.470 | 30.970 | 31.320 | 22.620 | 531,400 |
| 2011-11-10 | 30.750 | 30.880 | 30.450 | 30.780 | 22.230 | 516,000 |
| 2011-11-09 | 30.340 | 30.700 | 30.250 | 30.460 | 21.999 | 986,700 |
| 2011-11-08 | 30.600 | 31.010 | 30.310 | 31.010 | 22.396 | 739,800 |
| 2011-11-07 | 30.370 | 30.570 | 30.140 | 30.470 | 22.006 | 565,600 |
| 2011-11-04 | 30.310 | 30.560 | 30.180 | 30.470 | 22.006 | 576,100 |
| 2011-11-03 | 30.630 | 30.820 | 30.200 | 30.550 | 22.064 | 706,700 |
| 2011-11-02 | 30.390 | 30.560 | 30.200 | 30.460 | 21.999 | 966,400 |
| 2011-11-01 | 29.900 | 30.560 | 29.730 | 29.900 | 21.594 | 1,536,200 |
| 2011-10-31 | 30.630 | 31.240 | 30.430 | 30.900 | 22.316 | 1,278,800 |
| 2011-10-28 | 31.660 | 31.660 | 30.860 | 30.960 | 22.360 | 1,762,400 |
| 2011-10-27 | 32.000 | 32.110 | 31.390 | 31.920 | 23.053 | 1,196,700 |
| 2011-10-26 | 31.390 | 31.390 | 30.220 | 31.030 | 22.410 | 1,819,400 |
| 2011-10-25 | 31.090 | 31.090 | 30.320 | 30.540 | 22.056 | 2,180,300 |
| 2011-10-24 | 30.740 | 31.480 | 30.700 | 31.320 | 22.620 | 1,656,900 |
| 2011-10-21 | 29.390 | 30.520 | 29.140 | 30.520 | 22.042 | 2,363,400 |
| 2011-10-20 | 28.450 | 29.130 | 28.370 | 29.110 | 21.024 | 1,163,800 |
| 2011-10-19 | 27.940 | 28.730 | 27.800 | 28.470 | 20.561 | 1,116,400 |
| 2011-10-18 | 27.130 | 28.250 | 27.130 | 28.050 | 20.258 | 825,500 |
| 2011-10-17 | 27.670 | 27.720 | 26.930 | 27.020 | 19.514 | 676,800 |
| 2011-10-14 | 27.760 | 27.820 | 27.320 | 27.750 | 20.041 | 434,500 |
| 2011-10-13 | 27.330 | 27.590 | 27.260 | 27.420 | 19.803 | 556,500 |
Stock splits
| Date | Split (new : old) |
|---|
| 2001-01-19 | 2:1 |
| 2000-03-16 | 2:1 |
Dividends
| Ex-date | Amount |
|---|
| 2026-09-08 | 0.7000 USD |
| 2026-06-05 | 0.7000 USD |
| 2026-03-06 | 0.7000 USD |
| 2025-12-05 | 0.6500 USD |
| 2025-09-05 | 0.6500 USD |
| 2025-06-06 | 0.6500 USD |
| 2025-03-07 | 0.6500 USD |
| 2024-12-06 | 0.6000 USD |
| 2024-09-06 | 0.6000 USD |
| 2024-06-07 | 0.6000 USD |
| 2024-02-29 | 0.6000 USD |
| 2023-11-30 | 0.5500 USD |
| 2023-08-31 | 0.5500 USD |
| 2023-06-01 | 0.5500 USD |
| 2023-03-02 | 0.5500 USD |
| 2022-12-01 | 0.5100 USD |
| 2022-09-01 | 0.5100 USD |
| 2022-06-02 | 0.5100 USD |
| 2022-03-03 | 0.5100 USD |
| 2021-12-02 | 0.4800 USD |
| 2021-09-02 | 0.4800 USD |
| 2021-06-03 | 0.4800 USD |
| 2021-03-04 | 0.4800 USD |
| 2020-12-03 | 0.4500 USD |
| 2020-09-03 | 0.4500 USD |
| 2020-06-04 | 0.4500 USD |
| 2020-03-05 | 0.4500 USD |
| 2019-12-05 | 0.4300 USD |
| 2019-09-05 | 0.4300 USD |
| 2019-06-06 | 0.4300 USD |
| 2019-02-28 | 0.4300 USD |
Open, high, low and close are as traded (USD). Adjusted close accounts for splits and dividends. Educational only, not financial advice.