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Main Street Research LLC

Position in CMCSA — Comcast Corp

CIK 1513211 SAUSALITO, CA

Position in CMCSA

as of Jun 30, 2026 · filed Jul 29, 2026
Position Value
$270,958
-$117,201 QoQ
Shares Held
11,037
-18.4% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#1,319
of 1,877 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in CMCSA Over Time

Shares Held

Position Value (USD)

Position in Telecom Services

Communication Services · as of Jun 30, 2026

Main Street Research LLC holds $562,227 across 2 Telecom Services names. CMCSA ranks #2 (48.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 CMCSA
Comcast Corp
This page
11,037 $270,958

All Filings in CMCSA

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $270,958 11,037
2026-03-31 $388,159 13,520
2025-12-31 $326,159 10,912
2025-09-30 $352,626 11,223
2025-06-30 $370,176 10,372
2025-03-31 $382,726 10,372
2024-12-31 $389,261 10,372
2024-09-30 $433,237 10,372
2024-06-30 $408,751 10,438
2024-03-31 $526,615 12,148
2023-12-31 $469,676 10,711
2023-09-30 $510,398 11,511
2023-06-30 $477,991 11,504
2023-03-31 $393,202 10,372
2022-12-31 $431,494 12,339
2022-09-30 $361,639 12,330
2022-06-30 $406,997 10,372
2022-03-31 $491,609 10,500
2021-12-31 $603,154 11,984
2021-09-30 $643,418 11,504
2021-06-30 $617,754 10,834
2021-03-31 $589,258 10,890
2020-12-31 $592,644 11,310
2020-09-30 $511,404 11,055
2020-06-30 $411,199 10,549
2020-03-31 $395,026 11,490