Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2018-09-11 | 73.930 | 74.310 | 73.740 | 74.130 | 66.779 | 634,100 |
| 2018-09-10 | 74.060 | 74.550 | 73.590 | 74.190 | 66.833 | 722,600 |
| 2018-09-07 | 73.680 | 74.100 | 73.550 | 73.760 | 66.445 | 623,400 |
| 2018-09-06 | 73.080 | 73.980 | 73.030 | 73.860 | 66.535 | 570,900 |
| 2018-09-05 | 73.030 | 73.660 | 72.760 | 73.530 | 65.869 | 862,400 |
| 2018-09-04 | 72.110 | 73.000 | 72.110 | 72.990 | 65.385 | 747,200 |
| 2018-08-31 | 71.430 | 72.200 | 71.430 | 72.140 | 64.623 | 656,300 |
| 2018-08-30 | 72.280 | 72.280 | 71.500 | 71.670 | 64.202 | 681,700 |
| 2018-08-29 | 72.160 | 72.500 | 71.970 | 72.280 | 64.749 | 418,300 |
| 2018-08-28 | 72.270 | 72.430 | 71.930 | 72.140 | 64.623 | 444,100 |
| 2018-08-27 | 72.450 | 72.650 | 72.260 | 72.300 | 64.767 | 470,600 |
| 2018-08-24 | 72.000 | 72.190 | 71.660 | 72.150 | 64.632 | 381,600 |
| 2018-08-23 | 71.700 | 71.820 | 71.460 | 71.750 | 64.274 | 418,200 |
| 2018-08-22 | 72.250 | 72.310 | 71.630 | 71.670 | 64.202 | 516,600 |
| 2018-08-21 | 71.920 | 72.530 | 71.850 | 72.360 | 64.821 | 554,000 |
| 2018-08-20 | 72.480 | 72.560 | 71.940 | 71.970 | 64.471 | 590,500 |
| 2018-08-17 | 71.850 | 72.380 | 71.840 | 72.210 | 64.686 | 795,300 |
| 2018-08-16 | 71.400 | 72.230 | 71.350 | 71.910 | 64.417 | 767,800 |
| 2018-08-15 | 70.330 | 71.200 | 70.070 | 71.120 | 63.710 | 702,200 |
| 2018-08-14 | 70.460 | 70.850 | 70.400 | 70.660 | 63.298 | 518,600 |
| 2018-08-13 | 70.900 | 71.160 | 70.140 | 70.430 | 63.092 | 714,100 |
| 2018-08-10 | 71.020 | 71.040 | 70.570 | 70.870 | 63.486 | 645,600 |
| 2018-08-09 | 71.780 | 71.880 | 71.320 | 71.360 | 63.925 | 537,300 |
| 2018-08-08 | 71.620 | 71.970 | 71.300 | 71.650 | 64.185 | 671,300 |
| 2018-08-07 | 71.600 | 71.900 | 71.390 | 71.590 | 64.131 | 732,700 |
| 2018-08-06 | 71.500 | 71.720 | 71.350 | 71.540 | 64.086 | 651,500 |
| 2018-08-03 | 71.150 | 71.460 | 70.880 | 71.460 | 64.014 | 534,300 |
| 2018-08-02 | 70.860 | 71.230 | 70.360 | 71.150 | 63.737 | 923,300 |
| 2018-08-01 | 71.390 | 71.420 | 70.870 | 71.340 | 63.907 | 912,200 |
| 2018-07-31 | 71.240 | 71.450 | 71.010 | 71.350 | 63.916 | 1,493,100 |
| 2018-07-30 | 71.040 | 71.700 | 70.980 | 71.140 | 63.728 | 935,500 |
| 2018-07-27 | 71.500 | 73.110 | 70.800 | 70.890 | 63.504 | 1,329,500 |
| 2018-07-26 | 71.320 | 71.430 | 71.010 | 71.200 | 63.781 | 1,401,800 |
| 2018-07-25 | 70.380 | 71.240 | 70.370 | 71.160 | 63.746 | 901,200 |
| 2018-07-24 | 71.000 | 71.000 | 70.380 | 70.510 | 63.163 | 863,200 |
| 2018-07-23 | 70.390 | 71.000 | 70.130 | 70.790 | 63.414 | 918,300 |
| 2018-07-20 | 70.060 | 70.570 | 69.880 | 70.390 | 63.056 | 875,600 |
| 2018-07-19 | 70.140 | 70.640 | 70.140 | 70.300 | 62.975 | 932,400 |
| 2018-07-18 | 69.700 | 70.540 | 69.550 | 70.500 | 63.154 | 887,300 |
| 2018-07-17 | 69.760 | 69.870 | 69.190 | 69.690 | 62.429 | 585,800 |
| 2018-07-16 | 68.880 | 69.570 | 68.820 | 69.460 | 62.223 | 810,800 |
| 2018-07-13 | 68.600 | 68.930 | 68.410 | 68.860 | 61.685 | 564,300 |
| 2018-07-12 | 68.500 | 68.710 | 68.100 | 68.660 | 61.506 | 754,800 |
| 2018-07-11 | 67.900 | 68.330 | 67.870 | 68.190 | 61.085 | 783,800 |
| 2018-07-10 | 67.950 | 68.110 | 67.710 | 68.040 | 60.951 | 664,500 |
| 2018-07-09 | 66.910 | 68.230 | 66.910 | 68.170 | 61.067 | 721,400 |
| 2018-07-06 | 66.150 | 67.220 | 66.010 | 66.810 | 59.849 | 878,700 |
| 2018-07-05 | 65.800 | 66.120 | 65.400 | 66.090 | 59.204 | 754,200 |
| 2018-07-03 | 65.700 | 66.360 | 65.440 | 65.530 | 58.702 | 457,000 |
| 2018-07-02 | 65.030 | 65.680 | 65.000 | 65.260 | 58.460 | 1,026,200 |
| 2018-06-29 | 65.430 | 65.790 | 64.920 | 65.280 | 58.478 | 1,891,400 |
| 2018-06-28 | 64.770 | 65.380 | 64.540 | 65.120 | 58.335 | 712,600 |
| 2018-06-27 | 65.890 | 66.250 | 64.750 | 64.770 | 58.021 | 685,600 |
| 2018-06-26 | 66.450 | 66.450 | 65.860 | 66.030 | 59.150 | 632,500 |
| 2018-06-25 | 66.620 | 66.830 | 65.960 | 66.380 | 59.464 | 960,000 |
| 2018-06-22 | 66.000 | 67.140 | 65.720 | 66.740 | 59.786 | 2,609,600 |
| 2018-06-21 | 65.360 | 65.750 | 65.160 | 65.520 | 58.693 | 1,342,200 |
| 2018-06-20 | 66.110 | 66.450 | 65.420 | 65.550 | 58.720 | 936,400 |
| 2018-06-19 | 65.850 | 66.350 | 65.750 | 66.020 | 59.141 | 903,400 |
| 2018-06-18 | 65.850 | 66.560 | 65.470 | 66.390 | 59.473 | 1,001,400 |
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.