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AON Aon Plc

NYSE, CIK 0000315293, fiscal year ends 12/31. Last price 303.52 on 2026-10-23, market value 64.4 billion dollars.

Machine-readable: AON.json, AON.md. Sections: Graham Defensive, Magic Formula, Momentum, Insider, Buffett Quality, Lynch GARP, Graham Enterprising, Piotroski F-Score, earnings record, insiders, filings and links.

Philosophy	Score	Status	Current inputs as of	History used	Price	Verification	Rules
Graham Defensive	n/a	not scored (financial)	—	—	—	—	method
Magic Formula	n/a	not scored	—	—	—	—	method
Momentum	31	ok	2026-10-23	—	2026-10-23	—	method
Insider	49	ok	2026-10-23	—	—	—	method
Buffett Quality	n/a	not scored (financial)	—	—	—	—	method
Lynch GARP	n/a	not scored (financial)	—	—	—	—	method
Graham Enterprising	n/a	not scored (financial)	—	—	—	—	method
Piotroski F-Score	n/a	not scored (financial)	—	—	—	—	method

Market value, source trail

market_value = traded_price (price date) / depositary_ratio x latest point-in-time SEC shares outstanding (share-count date shown; from the filing cover page, summed across share classes only where the issuer filing verifies the classes are economically equivalent (rule + evidence URL in the source text), else withheld; priced at the primary listed class, so where other classes trade at a different price the value is an approximation; restated only for issuer-verified splits after the count date); weighted-average share counts are never used

Input	Value	Unit	Period / date	Source
Traded price	303.52	USD per traded unit (share or ADS)	2026-10-23	Yahoo Finance
SEC shares outstanding	212,125,434	underlying shares	2026-07-28	SEC cover page 10-Q 0001628280-26-050610 (212,125,434 shares (single class on cover)); filing document https://www.sec.gov/Archives/edgar/data/315293/000162828026050610/aon-20260630.htm 0001628280-26-050610
Depositary ratio	1.0	underlying shares per traded unit		domestic 10-K filer; SEC shares are the traded units
Market value price date × latest reported shares	64,384,311,728	USD	2026-10-23 shares at 2026-07-28	303.52 (price 2026-10-23) / 1 x 212,125,434 (shares at 2026-07-28) = 64,384,311,728

Graham Defensive

not scored (financial). How this is scored.

not scored (financial).

Magic Formula

not scored. How this is scored.

not scored.

Momentum

31 of 100. ok. How this is scored.

Test or factor	Value	Points
12-1 month return	-17.1 % (percentile 17.1)	8.6 / 50
6 month return	-5.7 % (percentile 28.0)	5.6 / 20
Price / 52-week high	0.798	12.0 / 15
Volatility penalty (60d annualised)	32.6 %	5.3 / 15

Inputs, 1 numbers with their sources

Input	Value	Period	Source	Check
Adjusted close series (14 months)	303.52	2026-10-23	Yahoo Finance / Alpaca Market Data daily history	not cross-checked

Insider

49 of 100. ok. How this is scored. Form 4 data loaded through 2026-10-23

Test or factor	Value	Points
Open-market buy value / market cap (percentile among buyers)	1.02 bp	30.1 / 35
Distinct buyers	1	6.2 / 25
Buyer seniority	0.5	10.0 / 20
Recency (half-life 30d)	0.29	2.9 / 10
Sales penalty (excludes 10b5-1 plan sales)	0.0 bp	-0.0 / 0

Inputs, 9 numbers with their sources

Input	Value	Period	Source	Check
Form 4 P KNIGHT LESTER B 2026-09-02	121297.17	2026-09-02	SEC Form 4 (insider transactions data set)	not cross-checked
Form 4 P KNIGHT LESTER B 2026-09-02	2362074.2399999998	2026-09-02	SEC Form 4 (insider transactions data set)	not cross-checked
Form 4 P KNIGHT LESTER B 2026-09-02	1664323.41	2026-09-02	SEC Form 4 (insider transactions data set)	not cross-checked
Form 4 P KNIGHT LESTER B 2026-09-02	566270.57	2026-09-02	SEC Form 4 (insider transactions data set)	not cross-checked
Form 4 P KNIGHT LESTER B 2026-09-02	474753.6	2026-09-02	SEC Form 4 (insider transactions data set)	not cross-checked
Form 4 P KNIGHT LESTER B 2026-09-02	1360969.2999999998	2026-09-02	SEC Form 4 (insider transactions data set)	not cross-checked
excluded 2026-07-28 S	10b5-1 plan		rule	not cross-checked
excluded 2026-07-28 S	10b5-1 plan		rule	not cross-checked
excluded 2026-07-28 S	10b5-1 plan		rule	not cross-checked

Buffett Quality

not scored (financial). How this is scored.

not scored (financial).

Lynch GARP

not scored (financial). How this is scored.

not scored (financial).

Graham Enterprising

not scored (financial). How this is scored.

not scored (financial).

Piotroski F-Score

not scored (financial). How this is scored.

not scored (financial).

Earnings record

SEC XBRL, by fiscal year (named by the calendar year it ends in); EPS split-adjusted to today's shares; each row links to the filing.

FY	Ended	Revenue, $M	Net income, $M	EPS diluted	Dividend	Filing
2013	2013-12-31	11,815	1,148	3.53	paid	0001628280-16-011485
2014	2014-12-31	12,045	1,431	4.66	paid	0001628280-17-001652
2015	2015-12-31	9,480	1,422	4.88	paid	0001628280-18-001923
2016	2016-12-31	9,409	1,430	5.16	paid	0001628280-19-001558
2017	2017-12-31	9,998	1,263	4.7	paid	0001193125-20-094774
2018	2018-12-31	10,770	1,174	4.59	paid	0001628280-21-002574
2019	2019-12-31	11,013	1,532	6.37	paid	0001628280-22-003180
2020	2020-12-31	11,066	1,969	8.45	paid	0001628280-23-004087
2021	2021-12-31	12,193	1,255	5.55	paid	0001628280-24-005392
2022	2022-12-31	12,479	2,589	12.14	paid	0001628280-25-006093
2023	2023-12-31	13,376	2,564	12.51	paid	0001628280-26-008116
2024	2024-12-31	15,698	2,654	12.49	paid	0001628280-26-008116
2025	2025-12-31	17,181	3,695	17.02	paid	0001628280-26-008116

Insider transactions

SEC Form 4 open-market purchases and sales from the insider data sets; latest 20.

Date	Insider	Role	Type	Shares	Price	Value
2026-09-02	Knight Lester B	director	buy	367	330.51	121,297
2026-09-02	Knight Lester B	director	buy	7,212	327.52	2,362,074
2026-09-02	Knight Lester B	director	buy	5,097	326.53	1,664,323
2026-09-02	Knight Lester B	director	buy	1,739	325.63	566,271
2026-09-02	Knight Lester B	director	buy	1,440	329.69	474,754
2026-09-02	Knight Lester B	director	buy	4,145	328.34	1,360,969
2026-07-28	Zeidel Darren	officer	sale plan	700	376.00	263,200
2026-07-28	Zeidel Darren	officer	sale plan	725	378.00	274,050
2026-07-28	Zeidel Darren	officer	sale plan	475	380.00	180,500
2026-07-17	Zeidel Darren	officer	sale plan	650	372.00	241,800
2026-07-17	Zeidel Darren	officer	sale plan	675	374.00	252,450
2026-07-17	Zeidel Darren	officer	sale plan	625	370.00	231,250
2026-07-07	Zeidel Darren	officer	sale plan	600	360.00	216,000

Filings and links

Third-party sites are linked only; nothing from them is stored here.

SEC: filing index, 8-K, Form 4, XBRL companyfacts
Prices: Yahoo Finance, Stooq
Elsewhere: morningstar, finviz, stockanalysis, seeking alpha, openinsider, google news

Cite as: The Claude Trader snapshot 2026-10-26, https://theclaudetrader.com/s/AON; data from SEC EDGAR XBRL and market prices (Alpaca Market Data, Yahoo Finance) to 2026-10-23. Data last checked 2026-10-26.