Aon plc Class A Ordinary Shares (Ireland) AON

Open calendar →

Aon plc Class A Ordinary Shares (Ireland) · Company · NYSE · Financial Services / Insurance Brokers

Paper trade (simulated — no real money)

Fill: USD 303.5200 · FX 1 USD = 1.277900 SGD · about SGD 387.8682 per unit

Sign in to place simulated trades. USD fills are converted into the SGD portfolio at the displayed rate.

Announcement types: (default: consequential filings)
Results & current reports
Capital markets
Ownership & governance

USD closing-price chart (daily close from yfinance · Last year)

USD 341.35 → 303.52 · -11.1%
381.260325.355269.450 1 2,3 4 5 6 7 8,9 10,11 12 13 14,15 16 17 18,19 20 21 22 Oct 25Jan 26Apr 26Jul 26Oct 26

Numbered dotted lines mark the filtered filings under Announcement Events below.

Price & SEC Filing History 23 Oct 2025 — 24 Oct 2026 (Last year)

Daily NYSE prices are sourced from yfinance. Yellow highlighting marks an intraday rise or a gap up between adjacent trading sessions. SEC acceptance times are converted to US Eastern time: pre-market filings appear below that day’s OHLCV row; filings accepted after the 09:30 ET open appear above it. The SEC does not publish an exact first-public-availability timestamp, so acceptance time is the best available proxy.

Weekend
305.0100 307.6200 301.7800 303.5200 1,108,585
296.0100 306.9500 296.0100 306.8000 1,636,400
296.5800 297.0000 293.3200 294.3500 1,009,700
292.5900 298.5500 290.0000 296.7100 1,477,500
289.0300 291.9100 287.1800 289.7400 1,521,300
Weekend
Weekend
288.7900 292.7300 287.7400 292.5500 1,840,100
279.8500 288.4700 279.8500 286.8000 2,330,900
275.6300 277.2500 272.0400 275.3500 1,699,600
275.9900 277.6200 272.3900 274.7100 1,453,700
274.8700 276.0100 273.2400 274.7800 1,673,300
Weekend
Weekend
276.6300 277.4900 272.8300 273.4700 1,911,600
271.2900 277.9000 270.0300 277.1200 1,976,500
275.0700 275.3100 269.7200 270.4700 1,541,400
270.8300 274.7100 270.1000 273.9900 1,382,200
267.5900 272.3700 266.3300 272.0500 1,366,000
Weekend
Weekend
274.9600 276.3900 268.9000 269.4500 1,608,800
277.4800 279.4900 274.8100 275.9500 2,009,500
275.7800 278.1900 273.8000 276.7700 2,300,100
269.9100 276.9700 269.0200 275.9000 1,987,900
277.5000 278.4000 270.0000 272.1000 1,852,200
Weekend
Weekend
277.0000 280.9800 276.5200 277.9900 1,633,000
281.6000 283.0300 275.3800 276.0900 2,713,200
284.6700 286.8000 281.1800 281.6000 1,793,000
291.0600 293.5500 282.7000 286.1000 2,544,500
22 · 8-K Pre-market · 06:30 ET 8-K ↗
297.0100 297.8700 290.7000 290.8200 1,936,300
Weekend
Weekend
294.2500 297.7300 293.0000 295.6400 3,186,100
21 · 8-K After-hours · 17:21 ET 8-K ↗
299.5400 302.1200 295.7800 296.0500 3,273,100
303.4000 304.0600 298.4800 300.5700 3,194,600
20 · 424B5 After-hours · 17:15 ET 424B5 ↗
311.6000 311.9800 304.5900 304.6700 1,799,000
308.0800 312.3900 305.9200 311.5400 2,879,200
Weekend
Weekend
310.8500 311.8900 302.4400 302.6900 2,238,000
19 · 424B5 Pre-market · 09:29 ET 424B5 ↗ 18 · 8-K Pre-market · 09:14 ET 8-K ↗
304.9700 310.0400 304.2000 307.7700 2,449,200
313.4500 315.6700 303.5900 304.6900 2,266,700
316.7800 321.5700 314.9500 315.7900 1,926,500
No trading
Weekend
Weekend
328.1800 328.8400 321.4900 323.0900 1,467,900
332.0000 336.4500 325.6800 327.0000 1,465,100
327.7000 331.6000 324.7900 330.8800 2,189,300
321.4200 328.5200 312.9200 326.3000 2,423,200
340.0000 343.2600 320.2100 321.5200 2,433,000
17 · 8-K Pre-market · 06:37 ET 8-K ↗
Weekend
Weekend
350.9600 358.7100 349.7600 355.4000 669,100
350.5100 352.8800 348.0300 349.5600 688,200
354.6300 356.4600 353.1900 353.9800 594,200
357.0000 360.3000 354.1400 354.8300 616,300
358.5200 361.7300 356.5000 359.1000 627,200
Weekend
Weekend
352.3900 356.8600 350.5700 355.1100 747,000
348.9000 356.1200 346.3200 351.9300 733,300
344.2300 352.8400 341.7500 348.4300 615,900
343.2000 350.1300 343.0300 343.2000 921,500
16 · 8-K After-hours · 16:15 ET 8-K ↗
354.0000 355.2700 346.5000 347.2200 709,300
Weekend
Weekend
357.0800 359.9800 353.7800 355.8300 704,500
354.3300 358.5500 349.3300 357.0800 810,100
354.0000 355.9100 349.9900 352.3600 626,000
354.0000 359.1000 354.0000 356.4600 403,300
357.7100 359.5300 355.0000 356.9700 705,300
Weekend
Weekend
357.5100 360.6000 354.6100 358.3000 928,700
362.9500 364.9900 356.8400 360.7500 1,140,000
356.9600 360.6000 355.2200 359.9700 657,200
353.3700 357.0900 350.2300 356.6500 1,433,500
362.0400 366.3200 356.1200 357.6300 1,950,100
Weekend
Weekend
363.0800 365.0200 359.7800 360.5500 1,315,600
367.1900 370.4900 358.4900 366.5700 4,227,700
15 · 10-Q After-hours · 16:08 ET 10-Q ↗
367.6400 379.5000 362.2600 377.1600 2,010,600
14 · 8-K Pre-market · 06:36 ET 8-K ↗
370.0000 382.3400 367.1700 381.2600 1,508,000
362.0300 369.7500 359.8000 367.1700 1,590,500
Weekend
Weekend
355.9300 362.6100 355.6500 361.7000 785,000
352.5900 355.7900 350.8300 355.7800 1,178,100
359.6500 359.9700 350.9600 352.3300 1,813,200
359.0800 363.0000 354.8000 359.4000 1,371,200
364.8700 366.0000 361.1100 362.7800 1,074,100
Weekend
Weekend
370.0000 375.9200 365.6300 367.2100 1,445,600
358.2300 368.6400 356.5600 368.6300 1,017,900
357.5200 360.2900 350.4600 355.1500 1,193,600
364.2900 365.7800 358.4000 358.8900 1,168,300
360.1200 367.5800 360.1200 367.3500 1,511,700
Weekend
Weekend
357.5500 360.0000 353.7900 356.9400 998,600
354.9800 357.5000 353.1000 355.5600 602,000
360.0000 361.1300 357.0000 357.5100 641,700
360.0000 366.4500 357.0700 359.8200 830,200
356.7100 357.1800 351.3800 356.9100 1,218,000
Weekend
Weekend
No trading
13 · S-3ASR After-hours · 17:15 ET S-3ASR ↗
346.4100 357.5400 344.2000 357.4600 1,183,000
12 · 8-K After-hours · 16:49 ET 8-K ↗
327.8300 347.2700 327.8300 343.5600 1,913,700
327.0700 333.7600 322.2600 331.6900 1,588,800
324.9700 330.4300 323.4100 327.5700 1,387,400
Weekend
Weekend
319.7200 330.3600 316.8200 328.6900 5,288,300
324.4900 328.4600 315.7800 315.9500 1,744,200
322.5900 328.2400 319.2200 325.4800 2,362,200
318.2900 323.5700 316.6900 320.7400 2,626,900
316.5100 319.7500 313.6200 313.6300 2,131,300
Weekend
Weekend
No trading
327.8600 328.0000 317.4800 317.7400 2,382,900
327.0200 334.7900 325.0000 326.6900 1,751,100
330.8000 333.1500 329.1300 331.4500 1,751,400
336.7100 338.2100 327.9800 329.5100 1,405,800
Weekend
Weekend
335.0000 338.2000 330.8100 335.3100 1,377,900
334.3900 340.1000 334.3900 335.1700 1,431,100
334.4800 340.7600 331.0000 336.3300 1,749,500
324.8700 333.0700 321.5500 331.5900 1,956,200
325.4900 328.8300 323.7800 325.8500 1,470,300
Weekend
Weekend
325.0000 331.1300 324.1200 328.5300 1,341,000
321.1700 327.9000 318.8100 322.2400 1,579,700
316.1600 317.0400 311.0700 315.6000 1,617,800
317.5800 319.3500 312.3400 317.8600 1,051,200
313.7800 321.4200 313.2300 320.4100 1,431,600
Weekend
Weekend
317.7700 317.8300 314.5400 316.0600 2,856,900
320.0300 322.0900 316.0300 318.3000 1,350,700
321.0900 325.6000 317.4900 318.5400 1,073,700
326.2700 326.3800 318.4800 319.2900 1,411,400
No trading
Weekend
Weekend
323.2800 325.4000 320.6500 324.7800 929,000
318.7100 325.2700 315.0000 324.2200 946,500
323.6000 323.6000 316.9000 321.1500 1,479,300
328.1600 330.2200 322.2600 323.6600 2,140,600
317.5100 328.4800 317.5100 326.5700 1,455,600
Weekend
Weekend
316.2400 321.6900 316.2400 317.2200 1,955,300
311.6100 317.2600 311.6100 315.4100 1,844,800
313.6200 315.4900 308.5100 310.9000 1,672,400
313.8900 317.5900 310.6300 316.3500 1,622,700
312.4200 314.8500 309.8700 312.0700 1,166,100
Weekend
Weekend
313.0000 314.0600 309.2200 312.7900 1,179,200
307.1900 315.9000 306.5200 313.5900 1,858,900
316.4100 317.4900 306.8700 308.2700 1,476,900
313.6700 315.4100 308.9900 314.5500 1,177,100
309.9300 316.5600 308.5700 314.9200 1,382,000
Weekend
Weekend
11 · 10-Q After-hours · 16:07 ET 10-Q ↗
326.5200 326.5200 310.7300 311.5100 1,822,700
10 · 8-K Pre-market · 06:34 ET 8-K ↗
312.4300 314.0200 307.0200 311.6500 2,614,600
319.8900 323.1200 319.1100 322.4900 1,156,800
9 · DEFA14A After-hours · 16:55 ET DEFA14A ↗ 8 · DEF 14A After-hours · 16:50 ET DEF 14A ↗
326.7300 328.9500 320.5200 321.6800 1,312,200
319.5300 325.9500 319.0000 323.7800 1,248,900
Weekend
Weekend
322.4200 323.7900 318.6400 321.1400 761,200
326.3500 328.1300 321.6000 323.5600 941,300
333.8000 334.9200 324.2800 326.8600 1,281,900
332.9300 336.8900 331.7500 335.3200 1,215,000
331.4500 334.3500 330.9100 331.9500 792,200
Weekend
Weekend
333.2700 336.3500 331.4300 331.8000 1,161,400
329.8700 337.9800 328.2700 335.3400 1,350,000
323.8000 329.2900 321.7500 328.0800 1,093,700
321.7500 324.4300 320.9500 323.0200 1,270,500
315.0000 325.6800 313.0000 325.4000 1,687,500
Weekend
Weekend
323.1600 323.2900 307.8100 312.5700 2,414,200
326.5400 328.1700 322.6900 325.4000 1,314,400
322.4700 330.9300 321.5800 329.7600 1,397,600
325.6100 326.5500 320.1000 322.4700 1,187,700
321.2100 327.2700 321.2100 326.1700 867,100
Weekend
Weekend
No trading
321.9400 328.7900 319.5700 323.1400 1,124,100
321.8800 325.3900 318.0000 321.3400 1,081,400
326.0500 326.6900 319.9000 322.7800 1,413,800
316.4500 325.3800 315.6600 324.0600 1,216,600
Weekend
Weekend
322.1900 328.0000 312.0500 313.6600 1,344,000
320.8300 326.6000 320.8300 323.7700 1,211,500
325.3600 327.4600 317.4600 321.4500 956,600
327.5600 328.8400 324.9600 327.0300 1,180,400
327.9900 328.2900 323.5100 325.9700 1,300,900
Weekend
Weekend
317.2400 326.5600 317.2400 325.6300 2,408,700
320.0000 320.8000 315.6400 316.9900 1,314,500
319.6700 320.3000 314.8000 317.8800 984,200
326.7500 333.2600 319.2300 321.1800 1,590,900
322.6000 327.2600 320.1300 326.7500 1,067,800
Weekend
Weekend
320.0100 324.2000 318.0200 321.4100 1,124,100
316.0000 323.2600 313.8100 315.9100 1,866,400
320.9600 322.0400 316.5500 316.9000 1,319,200
332.2200 332.2200 320.4400 320.9600 1,412,300
341.5500 342.3800 329.7500 332.8400 1,708,500
Weekend
Weekend
337.3700 341.4600 334.0900 340.6000 1,187,700
338.9700 341.8600 336.4900 338.7700 1,554,700
337.4200 344.6500 337.3700 341.1800 2,026,300
333.3700 339.3600 331.7100 339.0700 1,414,600
332.0200 340.3200 331.9600 337.8000 1,270,700
Weekend
Weekend
331.0000 337.9700 330.5600 335.4700 2,126,200
325.5000 332.0000 325.1600 330.2700 1,062,000
319.9000 325.0400 317.7800 324.6600 1,410,600
316.9600 321.3000 312.5800 319.3300 1,471,200
324.7100 326.4400 314.8900 315.3100 1,425,700
Weekend
Weekend
325.9400 327.2000 323.1800 325.0700 1,265,000
322.7700 324.3100 320.9100 324.3000 1,015,300
322.9300 326.4100 321.0300 322.9800 1,172,300
324.8500 329.5700 320.0000 325.9600 1,862,300
No trading
Weekend
Weekend
7 · 10-K After-hours · 16:15 ET 10-K ↗
317.9500 322.3900 313.1600 321.7000 2,220,200
309.7100 317.5800 304.5900 314.4900 2,827,500
315.3200 317.9100 307.0100 309.9700 2,960,100
312.9900 322.0800 312.9900 317.9200 3,966,900
340.7600 343.9200 309.1300 310.3400 3,885,900
Weekend
Weekend
344.7100 345.0000 340.5800 342.0400 1,326,100
350.3200 353.6800 343.1900 343.3600 1,421,900
348.2800 355.9600 348.1800 350.2100 1,272,700
347.3100 351.1500 343.2000 346.8400 1,266,300
353.1400 358.0400 348.2500 349.6100 1,371,700
Weekend
Weekend
346.9600 351.8000 341.1700 349.6400 1,938,400
6 · 8-K Pre-market · 06:35 ET 8-K ↗
335.6200 343.2800 335.5700 342.9500 2,149,200
329.4100 335.2300 327.5300 333.0000 1,341,200
337.1800 337.7800 325.9000 330.7500 1,330,500
339.3200 342.0000 336.9200 338.8700 1,156,700
Weekend
Weekend
336.1400 338.8400 333.8500 338.6900 1,053,400
331.9900 336.5800 330.3000 335.9600 1,370,700
339.5000 341.8300 330.7700 332.7600 1,592,900
341.3800 342.9700 337.4400 339.5000 1,645,500
No trading
Weekend
Weekend
343.2800 344.3900 340.6000 343.8600 882,900
346.0000 347.0600 342.7000 344.8400 915,900
344.7000 347.8300 344.5000 346.0000 1,019,700
348.8800 350.7000 343.2300 344.5900 1,028,400
351.0000 353.9300 349.3700 350.4900 1,053,500
Weekend
Weekend
351.4100 353.3600 350.1200 350.8000 678,400
349.0300 355.4300 347.2200 351.9700 861,700
348.1300 353.1600 342.9200 349.9200 1,390,700
5 · 8-K Pre-market · 06:30 ET 8-K ↗
350.3500 353.5300 348.3200 349.6700 797,800
340.9100 352.1600 339.3900 351.2900 992,700
Weekend
Weekend
351.1200 351.6500 342.7500 344.2700 780,600
4 · 8-K Pre-market · 08:00 ET 8-K ↗
No trading
356.9600 356.9600 352.8200 352.8800 453,300
355.9400 357.5700 353.6600 356.4900 440,100
356.6600 358.5500 355.4000 356.7300 433,200
Weekend
Weekend
356.2400 357.7900 354.1400 356.6500 309,400
No trading
355.0000 358.1400 354.0200 356.6500 283,900
355.7700 356.8100 353.8800 355.8700 590,300
348.8700 356.7700 348.0000 355.4600 827,000
Weekend
Weekend
352.6600 354.4600 349.9100 350.0400 2,459,700
350.7000 354.0600 350.7000 353.0200 980,100
350.3600 354.4000 349.9300 352.0300 885,300
352.8400 354.7200 351.0400 351.8000 1,121,400
353.7100 355.3300 350.9800 354.1000 968,800
Weekend
Weekend
348.6400 354.1200 347.3900 353.7900 1,074,300
342.7300 348.1200 340.0500 347.4000 1,037,300
346.2600 346.4200 336.4300 340.0500 1,300,300
344.3200 348.6600 343.0800 346.1900 974,800
343.2300 344.5500 341.0300 343.3900 875,000
Weekend
Weekend
346.7200 347.5700 340.1900 345.2000 1,189,000
344.4500 347.9900 344.4500 347.7100 690,800
345.4900 347.3400 341.9800 344.4500 798,400
351.0400 351.6600 345.5400 345.7000 982,900
352.6900 355.4800 350.4200 351.1700 1,085,600
Weekend
Weekend
352.1200 355.6200 351.4900 353.9200 400,100
No trading
351.4900 353.4500 349.7700 352.6100 654,700
344.0600 351.5000 342.8000 350.9600 692,600
347.2300 347.3200 343.3200 344.7000 1,657,400
Weekend
Weekend
346.0000 349.7000 344.1500 346.5100 1,967,900
343.7500 346.0600 343.1800 345.8900 1,124,000
348.3600 349.9800 339.1700 344.1700 1,112,000
352.2300 352.6400 344.4100 348.5400 1,428,700
350.0000 353.0000 347.2700 350.0200 1,609,300
Weekend
Weekend
351.8500 354.2400 344.8700 350.1300 1,232,200
349.9400 352.9900 347.2800 350.9400 1,183,600
349.1700 351.5900 345.4100 350.1100 1,221,200
346.7400 350.4300 344.6400 349.9300 789,600
343.3400 346.8300 341.0200 344.8700 1,099,100
Weekend
Weekend
340.9400 348.1800 339.0100 346.3200 1,500,600
340.8300 343.6100 339.0000 340.0000 897,100
344.2100 346.7600 341.7000 341.7000 1,344,800
340.1100 344.3700 337.8200 344.2100 1,074,500
339.4200 340.3700 331.1400 339.8400 1,474,800
Weekend
Weekend
3 · 10-Q After-hours · 16:05 ET 10-Q ↗
336.4300 348.6100 334.8000 340.6800 2,460,200
2 · 8-K Pre-market · 06:32 ET 8-K ↗ 1 · 8-K After-hours · 16:16 ET 8-K ↗
328.0700 330.7100 326.5100 328.1900 2,212,400
327.9300 329.1900 324.2800 326.0700 1,532,200
335.2100 335.2100 329.0000 329.9600 1,212,800
337.0000 338.6100 335.2400 336.8700 1,438,700
Weekend
Weekend
340.5000 342.3300 337.3400 337.7300 842,000
343.0000 343.4000 338.2500 341.3500 1,238,200

Announcement Events

Each title opens the filing on the SEC website. Registered users can summarise the filing and up to seven relevant exhibits linked within the same SEC submission.

22 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:30 ET Summarise
21 8-K 8-K (opens SEC filing in a new tab) After-hours · 17:21 ET Summarise
20 424B5 424B5 (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise
19 424B5 424B5 (opens SEC filing in a new tab) Pre-market · 09:29 ET Summarise
18 8-K 8-K (opens SEC filing in a new tab) Pre-market · 09:14 ET Summarise
17 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:37 ET Summarise
16 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
15 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:08 ET Summarise
14 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:36 ET Summarise
13 S-3ASR S-3ASR (opens SEC filing in a new tab) After-hours · 17:15 ET Summarise
12 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:49 ET Summarise
11 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:07 ET Summarise
10 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:34 ET Summarise
9 DEFA14A DEFA14A (opens SEC filing in a new tab) After-hours · 16:55 ET Summarise
8 DEF 14A DEF 14A (opens SEC filing in a new tab) After-hours · 16:50 ET Summarise
7 10-K 10-K (opens SEC filing in a new tab) After-hours · 16:15 ET Summarise
6 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:35 ET Summarise
5 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:30 ET Summarise
4 8-K 8-K (opens SEC filing in a new tab) Pre-market · 08:00 ET Summarise
3 10-Q 10-Q (opens SEC filing in a new tab) After-hours · 16:05 ET Summarise
2 8-K 8-K (opens SEC filing in a new tab) Pre-market · 06:32 ET Summarise
1 8-K 8-K (opens SEC filing in a new tab) After-hours · 16:16 ET Summarise