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

AMG

AFFILIATED MANAGERS GROUP, INC.

Superinvestors

Institutional investors holding AMG

Consensus →
InvestorFundWeightSharesValueQuarter
Ariel InvestmentsAriel Investments (Bobrinskoy & Rogers)3.30%1,064,030$294.4M2026Q1
Meridian / ArrowMarkMeridian Contrarian Fund0.73%107,864$23.4M2013Q4
Viking Global InvestorsViking Global Investors0.22%67,000$8.5M2007Q3
Mason HawkinsLongleaf Partners – Southeastern Asset Management0.08%5,562$1.5M2026Q1
Ruane CunniffSequoia Fund0.03%16,645$2.7M2017Q1
Kenneth FisherFisher Asset Management0.02%253,263$70.1M2026Q1
Jensen Investment ManagementJensen Investment Management0.01%6,860$572K2019Q3
Dodge & CoxDodge & Cox0.00%2,400$572K2025Q3

Congressional Activity

Congressional data coming soon

Insider Activity

4

Total trades

$1.8M

Volume

2

Buys

2

Sells

Last trade: May 8, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
May 8, 2026Rodriguez Felix V. MatosSell$300K
May 6, 2026Rodriguez Felix V. MatosBuy$459K

Congressional Tradeslast 90 days

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

May 6, 2026
Rodriguez Felix V. Matos
Sell
$1.0M
May 1, 2026Rodriguez Felix V. MatosBuy–