Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2017-04-06 | 56.090 | 56.500 | 55.730 | 56.400 | 48.952 | 689,300 |
| 2017-04-05 | 56.510 | 56.660 | 55.950 | 56.000 | 48.605 | 830,800 |
| 2017-04-04 | 56.010 | 56.510 | 55.770 | 56.380 | 48.935 | 712,400 |
| 2017-04-03 | 56.600 | 56.640 | 55.810 | 56.020 | 48.623 | 887,000 |
| 2017-03-31 | 56.600 | 56.820 | 56.500 | 56.540 | 49.074 | 941,300 |
| 2017-03-30 | 56.640 | 56.920 | 56.590 | 56.770 | 49.274 | 447,800 |
| 2017-03-29 | 56.870 | 57.100 | 56.730 | 56.790 | 49.291 | 777,900 |
| 2017-03-28 | 56.390 | 57.090 | 56.120 | 57.010 | 49.482 | 665,000 |
| 2017-03-27 | 55.870 | 56.650 | 55.540 | 56.540 | 49.074 | 628,400 |
| 2017-03-24 | 56.460 | 56.920 | 56.220 | 56.440 | 48.987 | 879,300 |
| 2017-03-23 | 56.200 | 56.800 | 55.920 | 56.280 | 48.848 | 764,300 |
| 2017-03-22 | 55.950 | 56.430 | 55.840 | 56.120 | 48.709 | 1,013,700 |
| 2017-03-21 | 57.170 | 57.170 | 55.970 | 56.010 | 48.614 | 997,700 |
| 2017-03-20 | 56.950 | 57.270 | 56.660 | 56.880 | 49.369 | 848,400 |
| 2017-03-17 | 56.900 | 57.110 | 56.570 | 56.930 | 49.412 | 5,600,800 |
| 2017-03-16 | 57.330 | 57.530 | 56.730 | 56.860 | 49.352 | 857,200 |
| 2017-03-15 | 56.890 | 57.160 | 56.750 | 57.070 | 49.534 | 813,600 |
| 2017-03-14 | 56.790 | 56.930 | 56.530 | 56.850 | 49.343 | 618,900 |
| 2017-03-13 | 56.560 | 57.000 | 56.510 | 56.990 | 49.464 | 1,217,200 |
| 2017-03-10 | 56.610 | 56.730 | 56.220 | 56.660 | 49.178 | 585,200 |
| 2017-03-09 | 56.170 | 56.470 | 55.970 | 56.240 | 48.814 | 701,300 |
| 2017-03-08 | 56.600 | 56.630 | 55.970 | 56.150 | 48.735 | 679,000 |
| 2017-03-07 | 56.340 | 56.540 | 55.850 | 56.320 | 48.883 | 880,600 |
| 2017-03-06 | 56.420 | 56.700 | 56.300 | 56.400 | 48.952 | 662,100 |
| 2017-03-03 | 56.620 | 56.940 | 56.460 | 56.860 | 49.352 | 654,200 |
| 2017-03-02 | 57.710 | 57.790 | 56.720 | 56.780 | 49.282 | 816,600 |
| 2017-03-01 | 57.260 | 57.820 | 57.040 | 57.760 | 50.133 | 1,145,100 |
| 2017-02-28 | 57.040 | 57.260 | 56.770 | 56.950 | 49.091 | 833,300 |
| 2017-02-27 | 56.860 | 57.080 | 56.800 | 56.980 | 49.117 | 645,400 |
| 2017-02-24 | 56.140 | 56.910 | 55.960 | 56.860 | 49.014 | 751,300 |
| 2017-02-23 | 56.230 | 56.470 | 56.170 | 56.470 | 48.677 | 553,200 |
| 2017-02-22 | 56.050 | 56.400 | 55.790 | 56.220 | 48.462 | 705,300 |
| 2017-02-21 | 56.700 | 57.190 | 56.060 | 56.150 | 48.402 | 1,215,700 |
| 2017-02-17 | 56.240 | 56.940 | 55.960 | 56.940 | 49.083 | 1,206,100 |
| 2017-02-16 | 55.820 | 56.490 | 55.780 | 56.470 | 48.677 | 640,500 |
| 2017-02-15 | 55.560 | 55.890 | 55.360 | 55.820 | 48.117 | 567,100 |
| 2017-02-14 | 55.260 | 55.790 | 55.190 | 55.560 | 47.893 | 886,000 |
| 2017-02-13 | 55.350 | 55.740 | 55.160 | 55.550 | 47.884 | 678,300 |
| 2017-02-10 | 54.830 | 55.310 | 54.470 | 55.170 | 47.557 | 928,400 |
| 2017-02-09 | 54.150 | 54.750 | 54.070 | 54.710 | 47.160 | 779,200 |
| 2017-02-08 | 53.840 | 54.080 | 53.630 | 54.060 | 46.600 | 632,300 |
| 2017-02-07 | 54.280 | 54.280 | 53.770 | 53.930 | 46.488 | 578,900 |
| 2017-02-06 | 53.820 | 54.200 | 53.820 | 54.020 | 46.566 | 440,400 |
| 2017-02-03 | 54.260 | 54.470 | 53.860 | 54.010 | 46.557 | 846,400 |
| 2017-02-02 | 53.370 | 54.170 | 53.190 | 53.950 | 46.505 | 871,300 |
| 2017-02-01 | 54.000 | 54.190 | 53.390 | 53.440 | 46.066 | 754,600 |
| 2017-01-31 | 53.770 | 54.000 | 53.530 | 53.830 | 46.402 | 833,100 |
| 2017-01-30 | 54.260 | 54.510 | 53.330 | 53.870 | 46.436 | 1,075,600 |
| 2017-01-27 | 53.700 | 54.650 | 53.050 | 54.620 | 47.083 | 1,053,700 |
| 2017-01-26 | 53.890 | 54.070 | 53.740 | 53.790 | 46.367 | 856,000 |
| 2017-01-25 | 53.500 | 53.870 | 53.300 | 53.790 | 46.367 | 914,300 |
| 2017-01-24 | 52.930 | 53.420 | 52.770 | 53.230 | 45.885 | 876,500 |
| 2017-01-23 | 52.740 | 52.960 | 52.580 | 52.740 | 45.462 | 721,700 |
| 2017-01-20 | 52.890 | 52.970 | 52.570 | 52.840 | 45.548 | 703,700 |
| 2017-01-19 | 53.040 | 53.060 | 52.510 | 52.670 | 45.402 | 520,700 |
| 2017-01-18 | 52.740 | 53.010 | 52.290 | 52.930 | 45.626 | 510,500 |
| 2017-01-17 | 52.420 | 52.810 | 52.140 | 52.570 | 45.316 | 689,900 |
| 2017-01-13 | 52.650 | 53.040 | 52.650 | 52.810 | 45.523 | 507,800 |
| 2017-01-12 | 52.170 | 52.650 | 51.960 | 52.580 | 45.324 | 1,076,200 |
| 2017-01-11 | 52.390 | 52.610 | 52.040 | 52.480 | 45.238 | 621,500 |
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.