Arthur J. Gallagher & Co. historical data
| Date | Open | High | Low | Close | Adj. close | Volume |
| 2010-02-16 | 23.040 | 23.040 | 22.760 | 23.040 | 15.309 | 399,100 |
| 2010-02-12 | 22.850 | 22.980 | 22.680 | 22.980 | 15.269 | 523,700 |
| 2010-02-11 | 22.900 | 23.000 | 22.760 | 22.940 | 15.242 | 304,500 |
| 2010-02-10 | 22.850 | 22.950 | 22.710 | 22.880 | 15.202 | 339,600 |
| 2010-02-09 | 22.920 | 23.000 | 22.720 | 22.860 | 15.189 | 530,800 |
| 2010-02-08 | 23.250 | 23.250 | 22.710 | 22.770 | 15.129 | 571,100 |
| 2010-02-05 | 23.490 | 23.520 | 22.820 | 23.100 | 15.349 | 843,400 |
| 2010-02-04 | 23.500 | 23.780 | 23.320 | 23.560 | 15.654 | 925,300 |
| 2010-02-03 | 22.800 | 24.120 | 22.800 | 23.740 | 15.774 | 1,457,900 |
| 2010-02-02 | 22.830 | 23.000 | 22.550 | 22.700 | 15.083 | 903,500 |
| 2010-02-01 | 22.610 | 22.840 | 22.530 | 22.780 | 15.136 | 404,700 |
| 2010-01-29 | 22.660 | 22.980 | 22.550 | 22.550 | 14.983 | 470,000 |
| 2010-01-28 | 22.550 | 22.740 | 22.270 | 22.600 | 15.016 | 385,900 |
| 2010-01-27 | 22.590 | 22.830 | 22.320 | 22.480 | 14.937 | 561,700 |
| 2010-01-26 | 22.840 | 22.990 | 22.660 | 22.660 | 15.056 | 317,000 |
| 2010-01-25 | 22.820 | 23.340 | 22.680 | 22.820 | 15.163 | 558,700 |
| 2010-01-22 | 22.360 | 22.730 | 22.310 | 22.700 | 15.083 | 778,500 |
| 2010-01-21 | 22.090 | 22.370 | 22.020 | 22.310 | 14.824 | 501,600 |
| 2010-01-20 | 22.080 | 22.140 | 21.900 | 22.140 | 14.711 | 278,800 |
| 2010-01-19 | 22.020 | 22.260 | 22.020 | 22.250 | 14.784 | 400,800 |
| 2010-01-15 | 22.240 | 22.280 | 21.980 | 22.000 | 14.618 | 243,300 |
| 2010-01-14 | 22.220 | 22.280 | 22.130 | 22.230 | 14.771 | 299,400 |
| 2010-01-13 | 22.310 | 22.360 | 22.200 | 22.290 | 14.810 | 244,200 |
| 2010-01-12 | 22.100 | 22.350 | 22.100 | 22.300 | 14.817 | 447,000 |
| 2010-01-11 | 22.140 | 22.300 | 22.050 | 22.170 | 14.731 | 582,600 |
| 2010-01-08 | 22.100 | 22.180 | 22.000 | 22.140 | 14.711 | 391,300 |
| 2010-01-07 | 22.100 | 22.150 | 21.960 | 22.080 | 14.671 | 633,500 |
| 2010-01-06 | 22.260 | 22.440 | 22.110 | 22.220 | 14.764 | 349,400 |
| 2010-01-05 | 22.350 | 22.420 | 21.900 | 22.210 | 14.757 | 545,700 |
| 2010-01-04 | 22.600 | 22.810 | 22.280 | 22.330 | 14.837 | 379,300 |
| 2009-12-31 | 22.830 | 22.880 | 22.510 | 22.510 | 14.957 | 368,700 |
| 2009-12-30 | 22.890 | 23.090 | 22.780 | 22.880 | 15.202 | 392,600 |
| 2009-12-29 | 22.710 | 22.910 | 22.460 | 22.880 | 15.202 | 338,700 |
| 2009-12-28 | 22.630 | 22.850 | 22.490 | 22.790 | 14.930 | 408,800 |
| 2009-12-24 | 22.370 | 22.660 | 22.280 | 22.530 | 14.760 | 367,100 |
| 2009-12-23 | 22.450 | 22.590 | 22.220 | 22.370 | 14.655 | 598,700 |
| 2009-12-22 | 22.110 | 22.370 | 22.010 | 22.370 | 14.655 | 568,200 |
| 2009-12-21 | 22.090 | 22.260 | 22.030 | 22.100 | 14.478 | 351,500 |
| 2009-12-18 | 22.190 | 22.200 | 21.960 | 22.050 | 14.445 | 1,833,300 |
| 2009-12-17 | 22.220 | 22.360 | 21.880 | 22.180 | 14.530 | 1,077,500 |
| 2009-12-16 | 22.680 | 22.680 | 22.220 | 22.390 | 14.668 | 573,100 |
| 2009-12-15 | 22.380 | 22.570 | 22.230 | 22.560 | 14.779 | 541,400 |
| 2009-12-14 | 22.230 | 22.380 | 22.120 | 22.380 | 14.661 | 372,200 |
| 2009-12-11 | 22.220 | 22.320 | 22.110 | 22.200 | 14.544 | 428,500 |
| 2009-12-10 | 22.280 | 22.430 | 22.120 | 22.250 | 14.576 | 433,800 |
| 2009-12-09 | 22.280 | 22.390 | 22.100 | 22.210 | 14.550 | 445,500 |
| 2009-12-08 | 22.430 | 22.540 | 22.280 | 22.360 | 14.648 | 224,300 |
| 2009-12-07 | 22.630 | 22.650 | 22.470 | 22.560 | 14.779 | 416,600 |
| 2009-12-04 | 22.490 | 22.720 | 22.310 | 22.600 | 14.806 | 329,700 |
| 2009-12-03 | 22.560 | 22.610 | 22.290 | 22.300 | 14.609 | 306,900 |
| 2009-12-02 | 22.580 | 22.620 | 22.410 | 22.540 | 14.766 | 216,900 |
| 2009-12-01 | 22.400 | 22.560 | 22.300 | 22.530 | 14.760 | 325,800 |
| 2009-11-30 | 22.150 | 22.420 | 21.950 | 22.400 | 14.675 | 616,800 |
| 2009-11-27 | 22.300 | 22.550 | 22.120 | 22.230 | 14.563 | 212,100 |
| 2009-11-25 | 22.820 | 22.900 | 22.580 | 22.700 | 14.871 | 152,600 |
| 2009-11-24 | 22.720 | 22.830 | 22.570 | 22.720 | 14.884 | 264,800 |
| 2009-11-23 | 22.690 | 22.840 | 22.570 | 22.760 | 14.910 | 390,000 |
| 2009-11-20 | 22.350 | 22.530 | 22.290 | 22.460 | 14.714 | 219,100 |
| 2009-11-19 | 22.950 | 23.040 | 22.430 | 22.490 | 14.733 | 364,600 |
| 2009-11-18 | 23.220 | 23.300 | 23.040 | 23.110 | 15.140 | 265,100 |
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.