COMCAST CORP (CMCSA)

Other · Cable & Other Pay Television Services

COMCAST CORP (CMCSA) stock research on InvestAtlant: institutional ownership from 13F filings, insider Form 4 activity, and SEC context.

Top institutional holders (2026-Q3)

InstitutionSharesValue% Outstanding
Rothschild & Co Wealth Management UK Ltd 11,245,630 $244.70M 0.55%
Sumitomo Mitsui Trust Group, Inc. 10,532,799 $229.19M 0.51%
Robeco Institutional Asset Management B.V. 9,634,612 $209.65M 0.47%
Metropolis Capital Ltd 9,305,174 $202.48M 0.45%
Wilmington Savings Fund Society, FSB 8,043,257 75.02M 0.39%
MACKENZIE FINANCIAL CORP 6,703,446 45.87M 0.32%
RWC Asset Management LLP 6,600,472 43.63M 0.32%
Mirae Asset Global Investments Co., Ltd. 6,213,573 — 0.30%

Recent insider transactions

DateInsiderTitleTypeValue
2026-03-05 Armstrong Jason CFO Sale 42.6K

US equities research

Follow the money behind the market.

Public filings. Connected research. One workspace.

Click a source to open it in the workspace

InvestAtlant connects public filings, institutional activity, insider trades, congressional disclosures, and sector data to surface emerging market signals.

Signals

Where the market starts to move.

Detect emerging patterns, convergence, and divergence before they become obvious.

How it works

Three steps. From data to insight.

  1. Find

    Research stocks, investors, sectors, and politicians.

  2. Track

    Follow capital flows across sectors and filings.

  3. Detect

    Spot emerging alignment and divergence.

Fundamentals · Market context · Institutions · Insiders · Sectors · SEC filings

Open the research workspace.

Holdings from SEC 13F. Insider trades from Form 4. Congress from House and Senate PTRs. Real-time market prices via TradingView.