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Convergence INSIDER Alpha Signal ledger Historical Replay Robinhood Chain Proof Trading Token Pro Account Methodology

Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

Robinhood Chain…

Overview Follow the Money Daily Brief Live Congress Directory Corporate Insiders Planned Sales & Stakes Government Money Political Influence Institutions Washington Network Follow the Power Disclosure Clock AI Investigator Watchlist Convergence INSIDER Alpha Signal ledger Historical Replay Robinhood Chain Proof Trading Token Pro Account Methodology

Overview Follow the Money Daily Brief Live Congress Directory Corporate Insiders Planned Sales & Stakes Government Money Political Influence Institutions Washington Network Follow the Power Disclosure Clock AI Investigator Watchlist

Convergence INSIDER Alpha Signal ledger Historical Replay Robinhood Chain Proof Trading Token Pro Account Methodology

Overview Follow the Money Daily Brief Live Congress Directory Corporate Insiders Planned Sales & Stakes Government Money Political Influence Institutions Washington Network Follow the Power Disclosure Clock AI Investigator Watchlist Convergence INSIDER Alpha Signal ledger Historical Replay Robinhood Chain Proof Trading Token Pro Account Methodology

Data sources

SEC FORM 42h ago

HOUSE PTR2h ago

SEC 13F2h ago

ROBINHOOD CHAIN2h ago

Public company

Graham Holdings Company

GHCCIK 0000104889

EDGAR filings Open in network

Price$1217.86

1 year+17.9%

Disclosed transactions0

Buys / sells0 / 0

Max Insider Score—

Connections with evidence1

GHC · disclosed activity on price

Disclosed transactions

No records

No transactions recorded for this profile.

Verified connections

← Holds over 5% ofevidence
O'Shaughnessy Laura12% of class · Schedule 13D · Nov 1, 2026

Planned sales and 5% stakes

Form 144, 13D and 13G

Laura G. O'ShaughnessyMay seek to influence the company · crossed on Oct 29, 2026 · 434.7K shares12% of class13D amendment · filed Nov 2, 2026