Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2017-09-27 | 61.870 | 61.870 | 61.190 | 61.630 | 54.225 | 1,039,500 |
| 2017-09-26 | 60.820 | 61.660 | 60.740 | 61.480 | 54.093 | 1,183,500 |
| 2017-09-25 | 60.910 | 61.060 | 60.480 | 60.880 | 53.565 | 1,026,300 |
| 2017-09-22 | 60.650 | 61.030 | 60.510 | 60.990 | 53.662 | 785,500 |
| 2017-09-21 | 60.720 | 60.830 | 60.460 | 60.670 | 53.380 | 575,800 |
| 2017-09-20 | 60.520 | 60.850 | 60.260 | 60.720 | 53.424 | 766,100 |
| 2017-09-19 | 60.400 | 60.770 | 60.290 | 60.370 | 53.116 | 820,000 |
| 2017-09-18 | 60.340 | 60.620 | 60.130 | 60.400 | 53.143 | 993,400 |
| 2017-09-15 | 59.940 | 60.560 | 59.750 | 60.380 | 53.125 | 1,816,700 |
| 2017-09-14 | 60.020 | 60.190 | 59.640 | 60.000 | 52.791 | 1,356,000 |
| 2017-09-13 | 60.180 | 60.300 | 59.280 | 59.960 | 52.755 | 1,032,800 |
| 2017-09-12 | 60.130 | 61.440 | 59.410 | 60.320 | 53.072 | 861,400 |
| 2017-09-11 | 59.490 | 60.330 | 59.190 | 60.040 | 52.826 | 1,529,000 |
| 2017-09-08 | 57.590 | 59.920 | 57.530 | 59.690 | 52.518 | 1,378,200 |
| 2017-09-07 | 58.200 | 58.270 | 57.550 | 57.680 | 50.749 | 629,700 |
| 2017-09-06 | 57.960 | 58.390 | 57.290 | 58.180 | 51.189 | 692,100 |
| 2017-09-05 | 57.700 | 57.990 | 57.190 | 57.710 | 50.776 | 1,466,100 |
| 2017-09-01 | 58.010 | 58.370 | 57.920 | 57.920 | 50.961 | 437,900 |
| 2017-08-31 | 58.010 | 58.210 | 57.740 | 57.900 | 50.943 | 688,700 |
| 2017-08-30 | 57.700 | 58.140 | 57.680 | 57.820 | 50.873 | 637,000 |
| 2017-08-29 | 57.870 | 58.150 | 57.760 | 58.040 | 50.723 | 497,200 |
| 2017-08-28 | 58.430 | 58.630 | 58.230 | 58.300 | 50.950 | 408,100 |
| 2017-08-25 | 58.540 | 58.680 | 58.330 | 58.380 | 51.020 | 487,000 |
| 2017-08-24 | 58.280 | 58.400 | 58.010 | 58.310 | 50.959 | 667,300 |
| 2017-08-23 | 58.390 | 58.690 | 58.180 | 58.210 | 50.872 | 427,000 |
| 2017-08-22 | 58.290 | 58.630 | 58.000 | 58.620 | 51.230 | 505,900 |
| 2017-08-21 | 57.900 | 58.320 | 57.670 | 58.130 | 50.802 | 576,300 |
| 2017-08-18 | 57.740 | 58.130 | 57.520 | 57.940 | 50.636 | 581,800 |
| 2017-08-17 | 58.860 | 59.120 | 57.830 | 57.850 | 50.557 | 422,200 |
| 2017-08-16 | 58.960 | 59.380 | 58.870 | 58.910 | 51.483 | 501,400 |
| 2017-08-15 | 59.040 | 59.170 | 58.610 | 58.720 | 51.317 | 331,400 |
| 2017-08-14 | 58.820 | 58.990 | 58.710 | 58.860 | 51.440 | 551,500 |
| 2017-08-11 | 58.630 | 58.980 | 58.350 | 58.420 | 51.055 | 546,200 |
| 2017-08-10 | 58.650 | 58.970 | 58.430 | 58.610 | 51.221 | 924,300 |
| 2017-08-09 | 58.720 | 59.040 | 58.720 | 58.900 | 51.475 | 430,200 |
| 2017-08-08 | 58.780 | 58.970 | 58.680 | 58.810 | 51.396 | 533,700 |
| 2017-08-07 | 59.000 | 59.120 | 58.670 | 58.910 | 51.483 | 598,300 |
| 2017-08-04 | 58.870 | 59.110 | 58.610 | 59.020 | 51.580 | 735,200 |
| 2017-08-03 | 59.080 | 59.080 | 58.570 | 58.650 | 51.256 | 490,900 |
| 2017-08-02 | 59.080 | 59.180 | 58.720 | 59.020 | 51.580 | 652,200 |
| 2017-08-01 | 59.030 | 59.330 | 58.880 | 59.190 | 51.728 | 485,600 |
| 2017-07-31 | 59.570 | 59.570 | 58.740 | 58.790 | 51.379 | 731,900 |
| 2017-07-28 | 58.620 | 59.640 | 57.810 | 59.410 | 51.920 | 800,600 |
| 2017-07-27 | 58.680 | 58.780 | 56.200 | 58.030 | 50.714 | 802,600 |
| 2017-07-26 | 59.130 | 59.180 | 58.560 | 58.670 | 51.274 | 572,800 |
| 2017-07-25 | 59.330 | 59.500 | 59.000 | 59.100 | 51.649 | 433,900 |
| 2017-07-24 | 58.690 | 58.910 | 58.320 | 58.830 | 51.413 | 565,500 |
| 2017-07-21 | 58.120 | 58.780 | 58.120 | 58.650 | 51.256 | 755,300 |
| 2017-07-20 | 57.800 | 58.270 | 57.780 | 58.270 | 50.924 | 637,900 |
| 2017-07-19 | 57.750 | 57.750 | 57.260 | 57.690 | 50.417 | 522,400 |
| 2017-07-18 | 57.110 | 57.720 | 57.110 | 57.560 | 50.304 | 469,400 |
| 2017-07-17 | 57.600 | 57.690 | 57.170 | 57.500 | 50.251 | 790,200 |
| 2017-07-14 | 57.350 | 57.730 | 57.080 | 57.610 | 50.347 | 549,900 |
| 2017-07-13 | 56.960 | 57.680 | 56.800 | 57.560 | 50.304 | 623,200 |
| 2017-07-12 | 56.940 | 57.260 | 56.750 | 56.870 | 49.701 | 783,700 |
| 2017-07-11 | 57.460 | 57.720 | 56.720 | 56.760 | 49.604 | 788,500 |
| 2017-07-10 | 57.710 | 57.840 | 57.400 | 57.460 | 50.216 | 883,600 |
| 2017-07-07 | 57.530 | 58.070 | 57.320 | 57.710 | 50.435 | 633,700 |
| 2017-07-06 | 57.420 | 57.750 | 57.080 | 57.160 | 49.954 | 714,300 |
| 2017-07-05 | 57.620 | 57.740 | 57.340 | 57.490 | 50.242 | 696,100 |
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.