Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2012-09-25 | 37.140 | 37.270 | 36.640 | 36.640 | 27.246 | 464,100 |
| 2012-09-24 | 37.050 | 37.180 | 36.910 | 37.020 | 27.528 | 292,700 |
| 2012-09-21 | 37.300 | 37.430 | 37.070 | 37.170 | 27.640 | 1,181,000 |
| 2012-09-20 | 36.890 | 37.110 | 36.590 | 37.080 | 27.573 | 331,900 |
| 2012-09-19 | 36.890 | 37.060 | 36.680 | 37.000 | 27.514 | 278,400 |
| 2012-09-18 | 37.070 | 37.170 | 36.810 | 36.870 | 27.417 | 284,400 |
| 2012-09-17 | 37.220 | 37.560 | 37.160 | 37.170 | 27.640 | 717,200 |
| 2012-09-14 | 37.100 | 37.470 | 37.060 | 37.290 | 27.729 | 650,500 |
| 2012-09-13 | 36.670 | 37.140 | 36.390 | 37.140 | 27.618 | 563,800 |
| 2012-09-12 | 36.240 | 36.640 | 36.220 | 36.640 | 27.246 | 404,400 |
| 2012-09-11 | 36.030 | 36.280 | 35.960 | 36.230 | 26.941 | 225,100 |
| 2012-09-10 | 36.400 | 36.470 | 35.990 | 36.010 | 26.777 | 441,600 |
| 2012-09-07 | 36.500 | 36.530 | 36.260 | 36.490 | 27.134 | 373,000 |
| 2012-09-06 | 36.380 | 36.500 | 36.320 | 36.450 | 27.105 | 746,600 |
| 2012-09-05 | 36.300 | 36.390 | 36.070 | 36.270 | 26.971 | 448,900 |
| 2012-09-04 | 35.690 | 36.240 | 35.630 | 36.190 | 26.911 | 455,600 |
| 2012-08-31 | 35.890 | 35.970 | 35.410 | 35.720 | 26.562 | 503,400 |
| 2012-08-30 | 35.800 | 35.880 | 35.580 | 35.750 | 26.584 | 222,300 |
| 2012-08-29 | 35.990 | 36.040 | 35.750 | 35.960 | 26.740 | 339,000 |
| 2012-08-28 | 35.820 | 36.100 | 35.790 | 35.890 | 26.688 | 286,700 |
| 2012-08-27 | 35.750 | 36.070 | 35.650 | 35.920 | 26.710 | 350,500 |
| 2012-08-24 | 35.510 | 35.750 | 35.500 | 35.680 | 26.532 | 258,300 |
| 2012-08-23 | 35.750 | 35.870 | 35.490 | 35.560 | 26.443 | 229,300 |
| 2012-08-22 | 35.670 | 35.900 | 35.600 | 35.770 | 26.599 | 350,700 |
| 2012-08-21 | 36.190 | 36.250 | 35.740 | 35.790 | 26.614 | 397,200 |
| 2012-08-20 | 35.880 | 36.110 | 35.860 | 36.040 | 26.800 | 440,000 |
| 2012-08-17 | 35.910 | 36.170 | 35.700 | 36.070 | 26.822 | 621,300 |
| 2012-08-16 | 35.570 | 35.840 | 35.450 | 35.820 | 26.636 | 667,800 |
| 2012-08-15 | 35.010 | 35.760 | 34.930 | 35.680 | 26.532 | 1,134,200 |
| 2012-08-14 | 34.800 | 35.150 | 34.730 | 34.970 | 26.004 | 378,300 |
| 2012-08-13 | 34.790 | 34.850 | 34.460 | 34.730 | 25.826 | 365,000 |
| 2012-08-10 | 34.820 | 35.000 | 34.700 | 34.910 | 25.959 | 253,200 |
| 2012-08-09 | 35.050 | 35.200 | 34.670 | 34.850 | 25.915 | 390,600 |
| 2012-08-08 | 35.070 | 35.170 | 34.870 | 35.000 | 26.026 | 625,100 |
| 2012-08-07 | 35.560 | 35.560 | 35.120 | 35.210 | 26.183 | 573,800 |
| 2012-08-06 | 35.530 | 35.670 | 35.150 | 35.180 | 26.160 | 388,700 |
| 2012-08-03 | 35.900 | 36.040 | 35.440 | 35.550 | 26.435 | 731,900 |
| 2012-08-02 | 35.650 | 35.800 | 35.350 | 35.510 | 26.406 | 411,400 |
| 2012-08-01 | 36.140 | 37.050 | 35.860 | 35.950 | 26.733 | 677,900 |
| 2012-07-31 | 35.360 | 35.640 | 35.100 | 35.480 | 26.383 | 737,500 |
| 2012-07-30 | 36.160 | 36.180 | 35.870 | 36.040 | 26.800 | 356,900 |
| 2012-07-27 | 35.690 | 36.350 | 35.490 | 36.210 | 26.926 | 577,100 |
| 2012-07-26 | 35.490 | 35.700 | 35.260 | 35.440 | 26.354 | 260,800 |
| 2012-07-25 | 35.050 | 35.310 | 34.860 | 35.120 | 26.116 | 227,800 |
| 2012-07-24 | 35.550 | 35.590 | 34.750 | 34.900 | 25.952 | 548,500 |
| 2012-07-23 | 35.270 | 35.600 | 35.040 | 35.500 | 26.398 | 231,500 |
| 2012-07-20 | 35.620 | 35.950 | 35.490 | 35.640 | 26.502 | 413,500 |
| 2012-07-19 | 36.040 | 36.110 | 35.600 | 35.820 | 26.636 | 439,100 |
| 2012-07-18 | 35.910 | 36.150 | 35.900 | 35.990 | 26.763 | 400,100 |
| 2012-07-17 | 35.570 | 36.120 | 35.540 | 36.010 | 26.777 | 526,300 |
| 2012-07-16 | 35.640 | 36.000 | 35.470 | 35.510 | 26.406 | 375,900 |
| 2012-07-13 | 35.370 | 35.770 | 35.270 | 35.760 | 26.592 | 323,700 |
| 2012-07-12 | 35.340 | 35.410 | 35.030 | 35.250 | 26.212 | 250,500 |
| 2012-07-11 | 35.370 | 35.530 | 35.260 | 35.460 | 26.368 | 289,400 |
| 2012-07-10 | 35.590 | 35.650 | 35.290 | 35.430 | 26.346 | 478,800 |
| 2012-07-09 | 35.360 | 35.550 | 35.160 | 35.540 | 26.428 | 675,800 |
| 2012-07-06 | 35.530 | 35.530 | 35.280 | 35.450 | 26.361 | 352,400 |
| 2012-07-05 | 35.500 | 35.770 | 35.250 | 35.760 | 26.592 | 542,900 |
| 2012-07-03 | 35.370 | 35.620 | 35.320 | 35.530 | 26.420 | 199,300 |
| 2012-07-02 | 35.070 | 35.620 | 35.070 | 35.440 | 26.354 | 569,600 |
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.