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SIMPLEX TRADING, LLC

Position in CMCSA — Comcast Corp

CIK 1488542 CHICAGO, IL

Position in CMCSA

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$9,084,187
+$5,685,268 QoQ
Shares Held
370,028
+212.6% QoQ
Ownership
0.010%
of shares outstanding
% of Portfolio
0.29%
of 13F equity value
Holder Rank
#370
of 1,843 holders
Holding Since
Mar 2020
17 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

SIMPLEX TRADING, LLC holds $43,139,225 across 30 Telecom Services names. CMCSA ranks #3 (21.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
3 CMCSA
Comcast Corp
This page
370,028 $9,084,187

All Filings in CMCSA

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17 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $9,084,187 370,028
2026-03-31 $3,398,919 118,388
2025-12-31 $23,424,685 783,697
2025-09-30 $4,308,366 137,122
2024-09-30 $7,659,356 183,370
2024-06-30 $4,084,306 104,298
2024-03-31 $6,363,255 146,788
2023-09-30 $166,363 3,752
2023-06-30 $5,769,307 138,852
2023-03-31 $2,793,358 73,684
2022-03-31 $250,393 5,348
2021-12-31 $7,099,192 141,053
2021-09-30 $5,925,112 105,938
2021-06-30 $4,345,718 76,214
2021-03-31 $1,469,898 27,165
2020-12-31 $2,947,345 56,247
2020-03-31 $12,996,094 378,013