Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2018-03-21 | 70.910 | 71.040 | 70.240 | 70.270 | 62.563 | 753,100 |
| 2018-03-20 | 70.800 | 71.190 | 70.570 | 70.850 | 63.079 | 750,300 |
| 2018-03-19 | 71.040 | 71.400 | 70.070 | 70.520 | 62.786 | 1,287,200 |
| 2018-03-16 | 70.740 | 71.400 | 70.530 | 71.010 | 63.222 | 2,564,200 |
| 2018-03-15 | 71.110 | 71.180 | 70.510 | 70.740 | 62.981 | 826,200 |
| 2018-03-14 | 71.420 | 71.420 | 70.470 | 70.740 | 62.981 | 848,100 |
| 2018-03-13 | 72.140 | 72.160 | 71.130 | 71.270 | 63.453 | 931,000 |
| 2018-03-12 | 72.520 | 72.520 | 71.400 | 71.710 | 63.845 | 1,064,000 |
| 2018-03-09 | 71.290 | 72.770 | 70.380 | 72.630 | 64.664 | 1,676,300 |
| 2018-03-08 | 69.930 | 70.120 | 69.350 | 70.050 | 62.367 | 770,300 |
| 2018-03-07 | 69.170 | 69.920 | 69.080 | 69.550 | 61.922 | 708,000 |
| 2018-03-06 | 69.770 | 69.770 | 68.810 | 69.610 | 61.975 | 836,100 |
| 2018-03-05 | 68.370 | 69.950 | 68.290 | 69.660 | 62.020 | 1,187,700 |
| 2018-03-02 | 67.940 | 68.760 | 67.630 | 68.660 | 61.130 | 808,400 |
| 2018-03-01 | 68.890 | 69.590 | 67.880 | 68.370 | 60.871 | 1,415,200 |
| 2018-02-28 | 70.380 | 70.820 | 69.110 | 69.110 | 61.165 | 947,700 |
| 2018-02-27 | 69.610 | 71.300 | 69.600 | 69.980 | 61.935 | 1,656,100 |
| 2018-02-26 | 69.260 | 69.820 | 69.210 | 69.760 | 61.740 | 928,000 |
| 2018-02-23 | 68.530 | 69.020 | 68.300 | 68.990 | 61.059 | 880,000 |
| 2018-02-22 | 69.000 | 69.280 | 67.960 | 68.130 | 60.298 | 1,384,100 |
| 2018-02-21 | 69.230 | 70.190 | 68.870 | 68.910 | 60.988 | 1,174,000 |
| 2018-02-20 | 68.920 | 69.940 | 68.670 | 69.310 | 61.342 | 1,051,300 |
| 2018-02-16 | 68.920 | 69.410 | 68.470 | 68.970 | 61.041 | 1,111,300 |
| 2018-02-15 | 68.670 | 69.110 | 68.350 | 69.050 | 61.112 | 912,400 |
| 2018-02-14 | 66.600 | 68.320 | 66.500 | 68.200 | 60.360 | 776,700 |
| 2018-02-13 | 66.020 | 67.170 | 65.900 | 66.980 | 59.280 | 988,700 |
| 2018-02-12 | 65.280 | 66.430 | 64.880 | 66.210 | 58.599 | 1,267,000 |
| 2018-02-09 | 64.890 | 65.430 | 63.540 | 64.940 | 57.475 | 1,914,500 |
| 2018-02-08 | 66.180 | 67.020 | 64.370 | 64.400 | 56.997 | 2,399,500 |
| 2018-02-07 | 65.360 | 67.250 | 65.230 | 66.110 | 58.510 | 1,247,800 |
| 2018-02-06 | 65.020 | 66.120 | 64.100 | 65.400 | 57.882 | 2,423,900 |
| 2018-02-05 | 68.230 | 68.810 | 66.210 | 66.270 | 58.652 | 1,778,200 |
| 2018-02-02 | 68.890 | 69.750 | 68.560 | 68.570 | 60.687 | 849,900 |
| 2018-02-01 | 68.300 | 69.320 | 68.040 | 69.190 | 61.236 | 1,106,100 |
| 2018-01-31 | 69.380 | 69.970 | 67.800 | 68.320 | 60.466 | 1,363,200 |
| 2018-01-30 | 69.530 | 70.400 | 69.310 | 69.330 | 61.360 | 1,293,200 |
| 2018-01-29 | 70.210 | 70.550 | 69.580 | 69.770 | 61.749 | 1,544,600 |
| 2018-01-26 | 67.300 | 70.490 | 67.120 | 70.490 | 62.387 | 2,859,500 |
| 2018-01-25 | 65.360 | 65.890 | 65.080 | 65.650 | 58.103 | 1,123,300 |
| 2018-01-24 | 64.830 | 65.400 | 64.320 | 65.120 | 57.634 | 1,533,200 |
| 2018-01-23 | 64.780 | 65.270 | 64.440 | 64.560 | 57.138 | 1,406,900 |
| 2018-01-22 | 64.420 | 64.760 | 64.290 | 64.750 | 57.306 | 748,800 |
| 2018-01-19 | 64.150 | 64.580 | 63.970 | 64.290 | 56.899 | 1,123,300 |
| 2018-01-18 | 63.980 | 64.200 | 63.460 | 64.030 | 56.669 | 782,200 |
| 2018-01-17 | 63.840 | 64.140 | 63.530 | 64.050 | 56.687 | 637,200 |
| 2018-01-16 | 63.930 | 64.240 | 63.290 | 63.420 | 56.129 | 970,900 |
| 2018-01-12 | 63.680 | 63.960 | 62.960 | 63.880 | 56.536 | 836,500 |
| 2018-01-11 | 63.600 | 63.690 | 63.070 | 63.400 | 56.112 | 834,500 |
| 2018-01-10 | 63.690 | 63.860 | 63.360 | 63.570 | 56.262 | 768,200 |
| 2018-01-09 | 63.750 | 64.090 | 63.580 | 63.630 | 56.315 | 648,100 |
| 2018-01-08 | 63.410 | 63.700 | 63.230 | 63.550 | 56.244 | 1,004,100 |
| 2018-01-05 | 63.240 | 63.590 | 63.100 | 63.510 | 56.209 | 811,700 |
| 2018-01-04 | 62.960 | 63.540 | 62.640 | 63.220 | 55.952 | 931,600 |
| 2018-01-03 | 62.280 | 62.920 | 62.280 | 62.640 | 55.439 | 989,800 |
| 2018-01-02 | 63.550 | 63.550 | 62.040 | 62.170 | 55.023 | 790,300 |
| 2017-12-29 | 63.680 | 63.890 | 63.280 | 63.280 | 56.005 | 487,100 |
| 2017-12-28 | 63.490 | 63.650 | 63.010 | 63.630 | 56.315 | 775,800 |
| 2017-12-27 | 62.910 | 63.310 | 62.670 | 63.220 | 55.952 | 519,700 |
| 2017-12-26 | 62.880 | 63.240 | 62.740 | 62.910 | 55.678 | 329,100 |
| 2017-12-22 | 62.830 | 63.020 | 62.400 | 62.600 | 55.404 | 949,400 |
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.