Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2017-12-21 | 64.400 | 64.400 | 62.950 | 62.980 | 55.740 | 1,138,500 |
| 2017-12-20 | 64.680 | 64.760 | 64.180 | 64.210 | 56.829 | 823,300 |
| 2017-12-19 | 64.360 | 64.870 | 63.890 | 64.400 | 56.997 | 1,559,300 |
| 2017-12-18 | 64.470 | 64.700 | 63.660 | 63.850 | 56.510 | 1,441,300 |
| 2017-12-15 | 63.790 | 64.370 | 63.560 | 63.980 | 56.625 | 5,084,900 |
| 2017-12-14 | 64.210 | 64.350 | 63.620 | 63.690 | 56.368 | 1,369,100 |
| 2017-12-13 | 65.040 | 65.040 | 63.960 | 64.210 | 56.829 | 1,926,100 |
| 2017-12-12 | 65.510 | 65.630 | 64.730 | 64.790 | 57.342 | 1,130,600 |
| 2017-12-11 | 65.710 | 65.810 | 65.280 | 65.480 | 57.953 | 844,700 |
| 2017-12-08 | 65.500 | 65.750 | 65.160 | 65.690 | 58.138 | 814,200 |
| 2017-12-07 | 65.850 | 66.000 | 65.140 | 65.270 | 57.767 | 1,185,700 |
| 2017-12-06 | 66.190 | 66.380 | 65.780 | 65.830 | 58.262 | 918,400 |
| 2017-12-05 | 66.620 | 66.660 | 65.820 | 65.820 | 58.253 | 756,900 |
| 2017-12-04 | 67.130 | 67.300 | 66.470 | 66.580 | 58.926 | 1,491,200 |
| 2017-12-01 | 66.170 | 66.760 | 64.800 | 66.570 | 58.917 | 1,823,800 |
| 2017-11-30 | 66.570 | 66.570 | 65.480 | 65.830 | 58.262 | 3,083,100 |
| 2017-11-29 | 66.800 | 67.320 | 66.270 | 66.420 | 58.439 | 1,299,500 |
| 2017-11-28 | 65.830 | 66.720 | 65.710 | 66.630 | 58.624 | 1,187,800 |
| 2017-11-27 | 65.310 | 65.920 | 65.310 | 65.710 | 57.815 | 2,632,700 |
| 2017-11-24 | 66.530 | 66.830 | 65.390 | 65.390 | 57.533 | 624,500 |
| 2017-11-22 | 66.810 | 67.040 | 66.450 | 66.620 | 58.615 | 3,079,900 |
| 2017-11-21 | 66.140 | 67.050 | 66.000 | 66.960 | 58.914 | 1,985,000 |
| 2017-11-20 | 66.120 | 66.170 | 65.670 | 66.010 | 58.079 | 1,702,900 |
| 2017-11-17 | 65.610 | 66.120 | 65.490 | 65.970 | 58.043 | 1,750,100 |
| 2017-11-16 | 65.440 | 65.940 | 65.340 | 65.830 | 57.920 | 1,333,300 |
| 2017-11-15 | 65.000 | 65.440 | 64.650 | 65.330 | 57.480 | 997,100 |
| 2017-11-14 | 63.750 | 65.120 | 63.670 | 65.100 | 57.278 | 1,245,800 |
| 2017-11-13 | 63.980 | 64.320 | 63.690 | 63.940 | 56.257 | 589,600 |
| 2017-11-10 | 63.660 | 64.200 | 63.360 | 64.080 | 56.380 | 590,400 |
| 2017-11-09 | 63.300 | 63.770 | 63.140 | 63.650 | 56.002 | 317,200 |
| 2017-11-08 | 63.630 | 63.780 | 63.330 | 63.530 | 55.897 | 663,200 |
| 2017-11-07 | 64.190 | 64.450 | 63.430 | 63.710 | 56.055 | 794,700 |
| 2017-11-06 | 63.380 | 64.240 | 63.380 | 64.140 | 56.433 | 672,000 |
| 2017-11-03 | 63.590 | 63.930 | 63.310 | 63.690 | 56.037 | 523,500 |
| 2017-11-02 | 63.670 | 64.060 | 62.750 | 63.880 | 56.204 | 919,300 |
| 2017-11-01 | 63.570 | 64.050 | 63.450 | 63.600 | 55.958 | 607,700 |
| 2017-10-31 | 62.570 | 63.370 | 62.570 | 63.330 | 55.721 | 761,500 |
| 2017-10-30 | 62.500 | 62.840 | 62.140 | 62.740 | 55.201 | 758,200 |
| 2017-10-27 | 62.850 | 63.200 | 61.910 | 62.540 | 55.025 | 844,800 |
| 2017-10-26 | 62.740 | 62.910 | 62.100 | 62.250 | 54.770 | 759,400 |
| 2017-10-25 | 62.800 | 62.910 | 62.210 | 62.540 | 55.025 | 538,800 |
| 2017-10-24 | 62.940 | 63.200 | 62.660 | 62.830 | 55.281 | 576,000 |
| 2017-10-23 | 63.020 | 63.140 | 62.500 | 62.960 | 55.395 | 512,800 |
| 2017-10-20 | 63.110 | 63.140 | 62.750 | 62.920 | 55.360 | 558,500 |
| 2017-10-19 | 62.000 | 62.640 | 61.830 | 62.640 | 55.113 | 623,900 |
| 2017-10-18 | 61.980 | 62.390 | 61.750 | 62.130 | 54.665 | 564,100 |
| 2017-10-17 | 62.220 | 62.360 | 61.710 | 61.880 | 54.445 | 603,900 |
| 2017-10-16 | 62.070 | 62.210 | 61.490 | 62.120 | 54.656 | 485,200 |
| 2017-10-13 | 62.000 | 62.310 | 61.780 | 62.020 | 54.568 | 390,900 |
| 2017-10-12 | 61.770 | 62.140 | 61.750 | 62.040 | 54.586 | 470,000 |
| 2017-10-11 | 61.840 | 61.860 | 61.580 | 61.720 | 54.304 | 497,100 |
| 2017-10-10 | 61.560 | 61.870 | 61.520 | 61.870 | 54.436 | 533,000 |
| 2017-10-09 | 61.750 | 61.900 | 61.450 | 61.600 | 54.198 | 578,500 |
| 2017-10-06 | 61.970 | 62.120 | 61.530 | 61.760 | 54.339 | 578,400 |
| 2017-10-05 | 61.600 | 61.900 | 61.520 | 61.800 | 54.374 | 471,900 |
| 2017-10-04 | 61.650 | 61.730 | 60.870 | 61.600 | 54.198 | 602,000 |
| 2017-10-03 | 61.630 | 62.070 | 61.520 | 62.000 | 54.550 | 618,200 |
| 2017-10-02 | 61.680 | 61.740 | 60.970 | 61.690 | 54.278 | 858,200 |
| 2017-09-29 | 61.200 | 61.630 | 61.130 | 61.550 | 54.154 | 798,800 |
| 2017-09-28 | 61.650 | 61.750 | 61.360 | 61.510 | 54.119 | 578,400 |
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.