DH
DataHeimdall
Insider TradesSuperinvestorsGrand Portfolio
DH
DataHeimdall

Financial transparency data from public SEC filings.

Product

  • Insider Trades
  • Grand Portfolio

Company

  • About
  • Blog
  • Contact

Legal

  • Privacy Policy
  • Terms of Service
  • Disclaimer
© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

AON

Superinvestors

Institutional investors holding AON

Consensus →
InvestorFundWeightSharesValueQuarter
Mason HawkinsLongleaf Partners – Southeastern Asset Management5.59%26,890,582$1.3B2012Q1
Wallace WeitzWeitz Investment Management4.82%213,860$69.0M2026Q1
Glenn GreenbergBrave Warrior Advisors4.61%1,279,957$62.8M2012Q1
Polen Capital ManagementPolen Capital Management3.02%1,354,053$437.1M2026Q1
William Von MuefflingCantillon Capital Management2.35%1,095,574$353.6M2026Q1
Dodge & CoxDodge & Cox1.44%8,116,095$2.6B2026Q1
Viking Global InvestorsViking Global Investors0.98%1,087,114$350.9M2026Q1
Warren BuffettBerkshire Hathaway0.46%3,602,995$1.3B2025Q4
Ruane CunniffSequoia Fund0.17%426,690$20.0M2011Q4
Jensen Investment ManagementJensen Investment Management0.16%25,569$8.3M2026Q1
Christopher DavisDavis Selected Advisers0.14%1,338,355$62.6M2011Q4
First Eagle Investment ManagementFirst Eagle Investment Management0.07%120,780$24.7M2020Q3
Yacktman Asset ManagementYacktman Asset Management0.06%12,915$4.2M2026Q1
David KatzMatrix Asset Advisors0.02%648$209K2026Q1
Bill NygrenOakmark Select Fund – Harris Associates0.00%699$247K2025Q4
Kenneth FisherFisher Asset Management0.00%635$224K2025Q4

Congressional Activity

Congressional data coming soon

Insider Activity

1

Total trades

$58K

Volume

0

Buys

1

Sells

Last trade: Dec 23, 2021

Insider Tradeslast 90 days

No insider trades in the last 90 days.

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.