Comcast Corporation
MX ˙ BMV ˙ US20030N1019
SecurityMX:CMCSA / Comcast Corporation
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership909,139 shares
Latest Disclosed Value $ 26,104,220
Advisor Group Holdings, Inc. ownership in CMCSA / Comcast Corporation

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 909,139 shares of Comcast Corporation (MX:CMCSA) valued at $26,104,220 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 878,122 shares of Comcast Corporation. This represents a change in shares of 3.53% during the quarter.

Advisor Group Holdings, Inc. has a history of taking positions in derivatives of the underlying security (CMCSA) in the form of stock options.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:CMCSA / Comcast Corporation Historical Put/Call Ratio
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)
2026-05-15 2026-03-31 13F COMCAST CORP CL A 20030N101 909,139 31,017 3.53 26,104 -0.57 0.0222
2026-02-17 2025-12-31 13F COMCAST CORP CL A 20030N101 878,122 -311,740 -26.20 26,254 -32.67 0.0384
2025-11-14 2025-09-30 13F COMCAST CORP CL A 20030N101 1,189,862 134,670 12.76 38,993 2.74 0.0546
2025-09-04 2025-06-30 13F/A-1 OMCAST CORP CL A 20030N101 1,055,192 300,898 39.89 37,954 36.33 0.0676
2025-08-13 2025-06-30 13F OMCAST CORP CL A 20030N101 926,528 172,234 34,447 0.0398
2025-05-12 2025-03-31 13F COMCAST CORP CL A 20030N101 754,294 -64,354 -7.86 27,840 -7.55 0.0620
2025-06-06 2024-12-31 13F/A-1 COMCAST CORP CL A 20030N101 818,648 -101,172 -11.00 30,114 -21.63 0.0676
2025-02-07 2024-12-31 13F COMCAST CORP CL A 20030N101 806,089 -113,731 32,094 0.0819
2024-11-13 2024-09-30 13F COMCAST CORP CL A 20030N101 919,820 -32,491 -3.41 38,427 3.05 0.0866
2024-08-13 2024-06-30 13F COMCAST CORP CL A 20030N101 952,311 -173,017 -15.37 37,288 -23.55 0.0881
2024-05-10 2024-03-31 13F COMCAST CORP CL A 20030N101 1,125,328 -664,681 -37.13 48,773 -37.87 0.1089
2024-02-12 2023-12-31 13F COMCAST CORP CL A 20030N101 1,790,009 -392,226 -17.97 78,503 -18.88 0.1374
2023-11-13 2023-09-30 13F COMCAST CORP CL A 20030N101 2,182,235 646,490 42.10 96,772 51.53 0.1430
2023-08-21 2023-06-30 13F/A-1 COMCAST CORP CL A 20030N101 1,535,745 25,931 1.72 63,862 11.48 0.1147
2023-08-10 2023-06-30 13F COMCAST CORP CL A 20030N101 2,757,071 1,247,257 62,641 0.0170
2023-05-12 2023-03-31 13F COMCAST CORP CL A 20030N101 1,509,814 65,731 4.55 57,287 13.43 0.1078
2023-02-10 2022-12-31 13F COMCAST CORP CL A 20030N101 1,444,083 171,429 13.47 50,507 35.30 0.1023
2022-11-14 2022-09-30 13F COMCAST CORP CL A 20030N101 1,272,654 55,308 4.54 37,330 -22.05 0.0853
2022-08-10 2022-06-30 13F COMCAST CORP CL A 20030N101 1,217,346 172,088 16.46 47,892 8.72 0.1056
2022-05-04 2022-03-31 13F COMCAST CORP CL A 20030N101 1,045,258 66,336 6.78 44,049 -10.69 0.0855
2022-02-03 2021-12-31 13F COMCAST CORP CL A 20030N101 978,922 39,580 4.21 49,322 -6.36 0.0934
2021-11-05 2021-09-30 13F COMCAST CORP CL A 20030N101 939,342 54,713 6.18 52,673 4.24 0.1098
2021-08-02 2021-06-30 13F COMCAST CORP CL A 20030N101 884,629 71,701 8.82 50,532 14.70 0.1094
2021-05-13 2021-03-31 13F COMCAST CORP CL A 20030N101 812,928 30,842 3.94 44,055 7.57 0.1060
2021-02-10 2020-12-31 13F COMCAST CORP CL A 20030N101 782,086 -38,354 -4.67 40,955 9.86 0.1094
2020-11-12 2020-09-30 13F COMCAST CORP CL A 20030N101 820,440 41,201 5.29 37,280 22.68 0.1115
2020-08-14 2020-06-30 13F COMCAST CORP CL A 20030N101 779,239 -557,336 -41.70 30,387 8.99 0.1020
2020-05-18 2020-03-31 13F COMCAST CORP CL A 20030N101 1,336,575 1,336,575 27,880 0.1141
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-02-03 2021-12-31 13F COMCAST CORP NEW PUT CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2021-11-05 2021-09-30 13F COMCAST CORP NEW PUT CL A Put 25 2 n/a n/a n/a
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.