Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2018-06-15 | 65.780 | 65.900 | 64.780 | 65.810 | 58.953 | 1,618,300 |
| 2018-06-14 | 66.520 | 66.550 | 65.790 | 65.980 | 59.105 | 741,300 |
| 2018-06-13 | 66.500 | 67.110 | 66.150 | 66.160 | 59.267 | 942,800 |
| 2018-06-12 | 67.300 | 67.300 | 66.350 | 66.370 | 59.455 | 711,500 |
| 2018-06-11 | 67.910 | 67.960 | 67.120 | 67.240 | 60.234 | 833,700 |
| 2018-06-08 | 67.230 | 67.790 | 67.160 | 67.780 | 60.718 | 527,300 |
| 2018-06-07 | 67.000 | 67.320 | 66.840 | 67.240 | 60.234 | 552,100 |
| 2018-06-06 | 66.580 | 66.920 | 66.290 | 66.910 | 59.938 | 721,200 |
| 2018-06-05 | 66.340 | 66.510 | 65.790 | 66.400 | 59.482 | 534,600 |
| 2018-06-04 | 66.560 | 66.760 | 66.250 | 66.470 | 59.544 | 699,300 |
| 2018-06-01 | 66.930 | 67.090 | 66.200 | 66.230 | 59.329 | 1,136,400 |
| 2018-05-31 | 66.500 | 67.010 | 66.100 | 66.280 | 59.374 | 1,418,200 |
| 2018-05-30 | 66.230 | 67.260 | 66.170 | 66.980 | 59.634 | 1,226,900 |
| 2018-05-29 | 66.940 | 67.230 | 65.470 | 65.800 | 58.583 | 1,039,000 |
| 2018-05-25 | 67.980 | 68.100 | 67.240 | 67.620 | 60.204 | 726,800 |
| 2018-05-24 | 67.890 | 68.180 | 67.670 | 68.150 | 60.676 | 866,400 |
| 2018-05-23 | 67.900 | 68.200 | 67.630 | 68.010 | 60.551 | 582,200 |
| 2018-05-22 | 68.100 | 68.400 | 67.940 | 68.140 | 60.667 | 532,900 |
| 2018-05-21 | 67.670 | 68.250 | 67.670 | 68.110 | 60.640 | 613,500 |
| 2018-05-18 | 66.970 | 67.790 | 66.810 | 67.530 | 60.124 | 1,179,100 |
| 2018-05-17 | 66.470 | 67.100 | 66.220 | 66.940 | 59.598 | 998,600 |
| 2018-05-16 | 66.900 | 67.210 | 66.530 | 66.620 | 59.313 | 745,000 |
| 2018-05-15 | 67.230 | 67.760 | 66.700 | 66.860 | 59.527 | 793,900 |
| 2018-05-14 | 68.970 | 69.170 | 67.510 | 67.550 | 60.141 | 825,600 |
| 2018-05-11 | 69.170 | 69.520 | 68.640 | 68.740 | 61.201 | 766,000 |
| 2018-05-10 | 68.780 | 69.320 | 68.520 | 69.260 | 61.664 | 1,026,300 |
| 2018-05-09 | 68.790 | 69.060 | 68.000 | 68.660 | 61.130 | 696,400 |
| 2018-05-08 | 68.620 | 69.000 | 68.490 | 68.710 | 61.174 | 921,000 |
| 2018-05-07 | 68.910 | 69.360 | 68.600 | 69.020 | 61.450 | 723,700 |
| 2018-05-04 | 68.140 | 69.170 | 67.780 | 68.940 | 61.379 | 815,200 |
| 2018-05-03 | 68.200 | 68.830 | 67.150 | 68.560 | 61.041 | 1,374,100 |
| 2018-05-02 | 68.720 | 69.800 | 67.020 | 68.640 | 61.112 | 2,198,000 |
| 2018-05-01 | 69.950 | 70.060 | 69.100 | 69.910 | 62.243 | 1,095,800 |
| 2018-04-30 | 70.660 | 70.940 | 69.980 | 69.990 | 62.314 | 841,600 |
| 2018-04-27 | 69.970 | 70.760 | 69.810 | 70.620 | 62.875 | 540,800 |
| 2018-04-26 | 69.590 | 70.660 | 68.700 | 70.230 | 62.527 | 989,500 |
| 2018-04-25 | 69.540 | 69.840 | 68.690 | 69.380 | 61.771 | 856,300 |
| 2018-04-24 | 70.450 | 70.500 | 68.940 | 69.560 | 61.931 | 703,600 |
| 2018-04-23 | 69.970 | 70.340 | 69.470 | 70.270 | 62.563 | 725,100 |
| 2018-04-20 | 70.230 | 70.410 | 69.500 | 69.970 | 62.296 | 932,400 |
| 2018-04-19 | 69.840 | 70.410 | 69.640 | 70.100 | 62.412 | 870,200 |
| 2018-04-18 | 69.830 | 70.220 | 69.480 | 69.820 | 62.162 | 865,400 |
| 2018-04-17 | 69.860 | 70.180 | 69.500 | 69.650 | 62.011 | 1,052,000 |
| 2018-04-16 | 68.960 | 69.880 | 68.850 | 69.280 | 61.682 | 561,800 |
| 2018-04-13 | 69.010 | 69.230 | 68.320 | 68.450 | 60.943 | 847,100 |
| 2018-04-12 | 68.250 | 68.990 | 68.120 | 68.560 | 61.041 | 683,000 |
| 2018-04-11 | 67.800 | 68.300 | 67.490 | 68.050 | 60.587 | 665,200 |
| 2018-04-10 | 68.270 | 68.730 | 67.880 | 68.370 | 60.871 | 1,109,300 |
| 2018-04-09 | 67.340 | 68.380 | 67.100 | 67.430 | 60.035 | 746,300 |
| 2018-04-06 | 67.890 | 68.290 | 66.580 | 67.090 | 59.732 | 934,100 |
| 2018-04-05 | 68.640 | 68.830 | 68.180 | 68.430 | 60.925 | 786,900 |
| 2018-04-04 | 66.990 | 68.520 | 66.810 | 68.400 | 60.898 | 1,201,400 |
| 2018-04-03 | 67.220 | 68.030 | 66.990 | 67.850 | 60.408 | 1,221,900 |
| 2018-04-02 | 68.650 | 68.750 | 66.070 | 67.100 | 59.741 | 1,277,400 |
| 2018-03-29 | 68.640 | 69.120 | 68.030 | 68.730 | 61.192 | 1,265,500 |
| 2018-03-28 | 67.770 | 68.640 | 67.270 | 68.200 | 60.720 | 944,300 |
| 2018-03-27 | 68.400 | 68.760 | 67.120 | 67.530 | 60.124 | 830,900 |
| 2018-03-26 | 67.260 | 68.280 | 66.780 | 68.230 | 60.747 | 1,986,800 |
| 2018-03-23 | 68.570 | 68.660 | 66.620 | 66.690 | 59.376 | 1,294,700 |
| 2018-03-22 | 69.760 | 70.330 | 68.540 | 68.570 | 61.049 | 971,800 |
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.