Arthur J. Gallagher & Co. (AJG)
NYSE: AJG · Real-Time Price · USD
240.32
-2.99 (-1.23%)
At close: Sep 11, 2026, 4:00 PM EDT
268.07
+27.75 (11.55%)
After-hours: Sep 11, 2026, 7:38 PM EDT
Arthur J. Gallagher & Co. Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 11, 2026 | 245.95 | 246.82 | 240.32 | 240.32 | 240.32 | -1.23% | 1,065,866 |
| Sep 10, 2026 | 245.22 | 247.55 | 242.70 | 243.31 | 243.31 | -0.40% | 1,054,927 |
| Sep 9, 2026 | 250.20 | 251.34 | 243.41 | 244.28 | 244.28 | -2.85% | 1,204,825 |
| Sep 8, 2026 | 257.68 | 258.39 | 251.29 | 251.45 | 251.45 | -4.02% | 1,106,309 |
| Sep 4, 2026 | 263.33 | 266.71 | 261.97 | 262.69 | 261.99 | -1.49% | 1,013,038 |
| Sep 3, 2026 | 265.81 | 271.27 | 264.69 | 266.66 | 265.95 | 0.83% | 1,499,432 |
| Sep 2, 2026 | 263.50 | 266.21 | 261.25 | 264.46 | 263.76 | 0.94% | 1,847,947 |
| Sep 1, 2026 | 264.43 | 267.23 | 260.04 | 262.00 | 261.30 | -0.06% | 2,024,544 |
| Aug 31, 2026 | 264.13 | 267.07 | 261.06 | 262.15 | 261.45 | -2.02% | 1,496,705 |
| Aug 28, 2026 | 260.50 | 268.91 | 260.50 | 267.56 | 266.85 | 2.85% | 1,151,325 |
| Aug 27, 2026 | 260.60 | 264.08 | 259.26 | 260.15 | 259.46 | -1.84% | 977,919 |
| Aug 26, 2026 | 267.64 | 272.78 | 263.58 | 265.03 | 264.32 | -1.30% | 1,426,516 |
| Aug 25, 2026 | 269.84 | 272.79 | 266.96 | 268.51 | 267.79 | -1.28% | 1,752,845 |
| Aug 24, 2026 | 265.00 | 272.37 | 262.49 | 271.99 | 271.27 | 3.10% | 1,531,388 |
| Aug 21, 2026 | 259.44 | 264.21 | 257.68 | 263.81 | 263.11 | 1.62% | 1,154,641 |
| Aug 20, 2026 | 256.45 | 262.17 | 255.11 | 259.61 | 258.92 | 0.84% | 1,340,744 |
| Aug 19, 2026 | 249.44 | 260.28 | 249.11 | 257.45 | 256.76 | 3.66% | 1,553,375 |
| Aug 18, 2026 | 250.02 | 255.28 | 248.05 | 248.36 | 247.70 | 0.16% | 1,287,038 |
| Aug 17, 2026 | 248.99 | 253.57 | 246.88 | 247.97 | 247.31 | -1.29% | 853,840 |
| Aug 14, 2026 | 253.16 | 254.39 | 250.00 | 251.21 | 250.54 | -0.90% | 895,780 |
| Aug 13, 2026 | 256.35 | 257.12 | 250.00 | 253.49 | 252.81 | -0.77% | 1,011,593 |
| Aug 12, 2026 | 250.00 | 256.29 | 248.11 | 255.46 | 254.78 | 0.77% | 1,474,991 |
| Aug 11, 2026 | 248.98 | 256.20 | 247.00 | 253.51 | 252.83 | 0.43% | 1,648,696 |
| Aug 10, 2026 | 247.00 | 252.86 | 245.33 | 252.43 | 251.76 | 1.74% | 1,280,106 |
| Aug 7, 2026 | 247.96 | 252.04 | 246.29 | 248.12 | 247.46 | -1.44% | 1,128,734 |
| Aug 6, 2026 | 252.78 | 253.78 | 247.52 | 251.74 | 251.07 | 0.28% | 1,287,562 |
| Aug 5, 2026 | 249.83 | 252.29 | 247.57 | 251.03 | 250.36 | 1.20% | 956,427 |
| Aug 4, 2026 | 242.84 | 248.83 | 240.82 | 248.06 | 247.40 | 0.11% | 1,419,481 |
| Aug 3, 2026 | 251.21 | 255.98 | 246.22 | 247.79 | 247.13 | -0.65% | 1,581,834 |
| Jul 31, 2026 | 245.93 | 255.73 | 242.28 | 249.42 | 248.76 | -2.75% | 1,736,300 |
| Jul 30, 2026 | 269.99 | 269.99 | 253.54 | 256.46 | 255.78 | -4.63% | 1,926,530 |
| Jul 29, 2026 | 261.59 | 269.80 | 259.34 | 268.91 | 268.19 | 1.36% | 1,573,593 |
| Jul 28, 2026 | 255.00 | 265.38 | 254.15 | 265.31 | 264.60 | 4.72% | 1,533,869 |
| Jul 27, 2026 | 249.42 | 255.40 | 248.14 | 253.36 | 252.68 | 2.26% | 1,110,007 |
| Jul 24, 2026 | 242.93 | 248.44 | 241.12 | 247.77 | 247.11 | 2.30% | 1,259,583 |
| Jul 23, 2026 | 242.45 | 243.85 | 240.98 | 242.21 | 241.56 | -0.12% | 1,345,099 |
| Jul 22, 2026 | 248.04 | 248.04 | 241.14 | 242.50 | 241.85 | -2.30% | 974,040 |
| Jul 21, 2026 | 251.97 | 255.50 | 247.15 | 248.22 | 247.56 | -2.14% | 1,046,914 |
| Jul 20, 2026 | 250.93 | 254.76 | 249.78 | 253.66 | 252.98 | -0.09% | 976,184 |
| Jul 17, 2026 | 257.61 | 261.92 | 252.30 | 253.90 | 253.22 | -0.79% | 1,530,679 |
| Jul 16, 2026 | 250.62 | 256.14 | 250.00 | 255.93 | 255.25 | 3.29% | 1,443,542 |
| Jul 15, 2026 | 255.61 | 255.61 | 246.35 | 247.77 | 247.11 | -2.39% | 1,851,828 |
| Jul 14, 2026 | 257.23 | 260.19 | 253.82 | 253.83 | 253.15 | -2.83% | 1,369,294 |
| Jul 13, 2026 | 255.97 | 261.27 | 255.97 | 261.23 | 260.53 | 3.22% | 1,337,230 |
| Jul 10, 2026 | 254.90 | 255.50 | 250.94 | 253.09 | 252.42 | -0.26% | 1,032,990 |
| Jul 9, 2026 | 254.15 | 255.22 | 251.72 | 253.76 | 253.08 | -1.11% | 1,473,468 |
| Jul 8, 2026 | 253.38 | 256.87 | 251.85 | 256.61 | 255.93 | 0.76% | 1,942,533 |
| Jul 7, 2026 | 254.00 | 256.63 | 252.00 | 254.67 | 253.99 | 1.96% | 1,887,178 |
| Jul 6, 2026 | 251.36 | 251.79 | 247.88 | 249.77 | 249.10 | -1.06% | 1,868,654 |
| Jul 2, 2026 | 240.96 | 252.96 | 240.31 | 252.44 | 251.77 | 5.33% | 2,741,390 |