Comcast Corporation
US ˙ NasdaqGS ˙ US20030N1019

SecurityCMCSA / Comcast Corporation
InstitutionGM Advisory Group, Inc.
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
GM Advisory Group, Inc. closes position in CMCSA / Comcast Corporation

On April 28, 2026 - GM Advisory Group, Inc. filed a 13F-HR form disclosing ownership of 0 shares of Comcast Corporation (US:CMCSA) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 6,871 shares of Comcast Corporation. The current value of the position is $0 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-28 2026-03-31 13F Comcast Corp CL A CL A 20030N101 0 -100.00 0
2026-02-13 2025-12-31 13F Comcast Corp CL A CL A 20030N101 6,871 -5,630 -45.04 205 -47.70 0.0080
2025-11-19 2025-09-30 13F COMCAST CORP CL A 20030N101 12,501 -2,024 -13.93 393 -24.32 0.0167
2025-08-13 2025-06-30 13F COMCAST CORP CL A 20030N101 14,525 4,984 52.24 518 47.16 0.0256
2025-05-14 2025-03-31 13F COMCAST CORP CL A 20030N101 9,541 -7 -0.07 352 -1.68 0.0190
2025-02-11 2024-12-31 13F COMCAST CORP CL A 20030N101 9,548 -1,394 -12.74 358 -21.66 0.0198
2024-11-12 2024-09-30 13F COMCAST CORP CL A 20030N101 10,942 547 5.26 457 12.29 0.0274
2024-08-12 2024-06-30 13F COMCAST CORP CL A 20030N101 10,395 -1,256 -10.78 407 -19.41 0.0263
2024-05-09 2024-03-31 13F COMCAST CORP CL A 20030N101 11,651 -1,255 -9.72 505 -10.62 0.0354
2024-02-12 2023-12-31 13F COMCAST CORP CL A 20030N101 12,906 5,863 83.25 566 81.09 0.0427
2023-11-14 2023-09-30 13F COMCAST CORP CL A 20030N101 7,043 0 0.00 312 6.85 0.0255
2023-08-14 2023-06-30 13F COMCAST CORP CL A 20030N101 7,043 0 0.00 293 9.36 0.0242
2023-05-12 2023-03-31 13F COMCAST CORP CL A 20030N101 7,043 -147 -2.04 267 6.37 0.0243
2023-02-13 2022-12-31 13F COMCAST CORP CL A 20030N101 7,190 2 0.03 251 18.96 0.0268
2022-11-14 2022-09-30 13F COMCAST CORP CL A 20030N101 7,188 0 0.00 211 -25.18 0.0265
2022-08-15 2022-06-30 13F COMCAST CORP CL A 20030N101 7,188 0 0.00 282 -16.32 0.0440
2022-05-13 2022-03-31 13F COMCAST CORP CL A 20030N101 7,188 0 0.00 337 -6.91 0.0401
2022-02-10 2021-12-31 13F COMCAST CORP CL A 20030N101 7,188 500 7.48 362 -3.21 0.0322
2021-11-12 2021-09-30 13F COMCAST CORP CL A 20030N101 6,688 142 2.17 374 0.27 0.0377
2021-08-16 2021-06-30 13F COMCAST CORP CL A 20030N101 6,546 154 2.41 373 7.80 0.0383
2021-05-13 2021-03-31 13F COMCAST CORP CL A 20030N101 6,392 0 0.00 346 3.28 0.0415
2021-02-12 2020-12-31 13F COMCAST CORP CL A 20030N101 6,392 0 0.00 335 13.18 0.0449
2020-11-12 2020-09-30 13F COMCAST CORP CL A 20030N101 6,392 -934 -12.75 296 3.50 0.0453
2020-08-13 2020-06-30 13F COMCAST CORP CL A 20030N101 7,326 720 10.90 286 25.99 0.0529
2020-05-13 2020-03-31 13F COMCAST CORP CL A 20030N101 6,606 376 6.04 227 -18.93 0.0618
2020-02-14 2019-12-31 13F COMCAST CORP CL A 20030N101 6,230 -2,040 -24.67 280 -24.93 0.0867
2019-11-14 2019-09-30 13F COMCAST CORP CL A 20030N101 8,270 8,270 373 0.1160
2018-05-14 2018-03-31 13F COMCAST CORP CL A 20030N101 0 -6,778 -100.00 0 -100.00
2018-02-09 2017-12-31 13F COMCAST CORP CL A 20030N101 6,778 1,324 24.28 271 29.05 0.0737
2017-11-13 2017-09-30 13F COMCAST CORP CL A 20030N101 5,454 -100 -1.80 210 -3.23 0.0639
2017-08-11 2017-06-30 13F COMCAST CORP CL A 20030N101 5,554 48 0.87 217 4.83 0.0683
2017-05-12 2017-03-31 13F COMCAST CORP CL A 20030N101 5,506 5,506 207 0.0707
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.