AON SCHEDULE 13G/A: SEC filing
A Schedule 13G/A amendment was
Filed with the SEC on · accession 0000019617-26-000389
AON filed a SCHEDULE 13G/A (schedule 13g/a) with the SEC on Oct 16, 2026. A Schedule 13G/A amendment was filed regarding Aon plc, indicating a change in a passive institutional holder's ownership position. The stock moved +2.0% by the first close after the filing.
Summary of the filing
A Schedule 13G/A amendment was filed regarding Aon plc, indicating a change in a passive institutional holder's ownership position. The filing text provided contains only the EDGAR directory listing and no substantive ownership details.
Key details
How AON stock reacted
Close before
$286.80
Oct 15, 2026
First close after
+2.00%
$292.55
5 trading days
+6.97%
$306.80
Since filing
+19.99%
$344.14
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Click hereFrequently asked questions
What did AON file with the SEC on Oct 16, 2026?
AON filed a SCHEDULE 13G/A (SEC filing). A Schedule 13G/A amendment was filed regarding Aon plc, indicating a change in a passive institutional holder's ownership position. The filing text provided contains only the EDGAR directory listing and no substantive ownership details.
How do I read a SCHEDULE 13G/A?
A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A SCHEDULE 13G/A (schedule 13g/a): A report the company filed with the SEC (the US market regulator).
How did AON stock react to this filing?
AON closed at $286.80 before the filing and $292.55 on Oct 16, 2026 (+2.00%). Five trading days later: $306.80 (+6.97%).
Other AON SEC filings
- 8-K · SEC filingOct 28, 2026
- 10-Q · SEC filingOct 28, 2026
- 8-K · Material agreementSep 22, 2026
- 8-K · Material agreementSep 17, 2026
- 424B5 · Secondary offeringSep 15, 2026
- 424B5 · Secondary offeringSep 11, 2026
- 8-K · AcquisitionSep 11, 2026
- 8-K · AcquisitionAug 31, 2026
- 8-K · Cfo changeAug 17, 2026
- 10-Q · SEC filingJul 29, 2026
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