康卡斯特公司
MX ˙ BMV ˙ US20030N1019
SecurityMX:CMCSA / Comcast Corporation
InstitutionJefferies Financial Group Inc.
Latest Disclosed Ownership61,606 shares
Latest Disclosed Value $ 1,768,709
Jefferies Financial Group Inc. ownership in CMCSA / Comcast Corporation

On May 7, 2026 - Jefferies Financial Group Inc. filed a 13F-HR form disclosing ownership of 61,606 shares of Comcast Corporation (MX:CMCSA) valued at $1,768,709 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 473,282 shares of Comcast Corporation. This represents a change in shares of -86.98% during the quarter.

Jefferies Financial Group Inc. has a history of taking positions in derivatives of the underlying security (CMCSA) in the form of stock options. The firm currently holds call options representing 110,000 of underlying shares valued at $3,158,100 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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)
2026-05-07 2026-03-31 13F COMCAST CORP CL A 20030N101 61,606 -411,676 -86.98 1,769 -87.50 0.0121
2026-02-09 2025-12-31 13F COMCAST CORP CL A 20030N101 473,282 397,992 528.61 14,146 498.14 0.0723
2025-11-13 2025-09-30 13F COMCAST CORP CL A 20030N101 75,290 31,438 71.69 2,366 51.12 0.0112
2025-08-12 2025-06-30 13F COMCAST CORP CL A 20030N101 43,852 -28,774 -39.62 1,565 -41.58 0.0132
2025-05-08 2025-03-31 13F COMCAST CORP CL A 20030N101 72,626 -172,942 -70.43 2,680 -70.93 0.0237
2025-02-27 2024-12-31 13F/A-1 COMCAST CORP CL A 20030N101 245,568 199,038 427.76 9,216 374.32 0.0552
2025-02-14 2024-12-31 13F COMCAST CORP CL A 20030N101 245,568 199,038 9,216 0.0549
2024-11-14 2024-09-30 13F COMCAST CORP CL A 20030N101 46,530 -76,075 -62.05 1,944 -59.53 0.0139
2024-08-13 2024-06-30 13F COMCAST CORP CL A 20030N101 122,605 84,905 225.21 4,801 193.82 0.0510
2024-05-13 2024-03-31 13F COMCAST CORP CL A 20030N101 37,700 26,434 234.64 1,634 230.77 0.0151
2024-05-06 2023-12-31 13F/A-1 COMCAST CORP CL A 20030N101 11,266 -5,025 -30.85 494 -31.58 0.0032
2024-02-14 2023-12-31 13F COMCAST CORP CL A 20030N101 11,266 -5,025 494 0.0032
2023-11-14 2023-09-30 13F COMCAST CORP CL A 20030N101 16,291 -73,750 -81.91 722 -80.70 0.0065
2023-08-14 2023-06-30 13F COMCAST CORP CL A 20030N101 90,041 -577,701 -86.52 3,741 -85.22 0.0335
2023-05-15 2023-03-31 13F COMCAST CORP CL A 20030N101 667,742 -107,058 -13.82 25,314 -6.57 0.2047
2023-09-21 2022-12-31 13F/A-1 COMCAST CORP CL A 20030N101 774,800 774,800 27,095 0.1877
2023-02-14 2022-12-31 13F COMCAST CORP CL A 20030N101 787,376 787,376 27,094 0.1869
2019-08-14 2019-06-30 13F COMCAST CORP CL A 20030N101 0 -34,895 -100.00 0 -100.00
2019-05-15 2019-03-31 13F COMCAST CORP CL A 20030N101 34,895 -63,716 -64.61 1,395 -58.46 0.1390
2019-02-14 2018-12-31 13F COMCAST CORP CL A 20030N101 98,611 -5,383 -5.18 3,358 -8.80 0.3942
2018-11-14 2018-09-30 13F COMCAST CORP CL A 20030N101 103,994 -9,851 -8.65 3,682 -1.42 0.3004
2018-08-13 2018-06-30 13F COMCAST CORP CL A 20030N101 113,845 13,317 13.25 3,735 8.73 0.2874
2018-05-15 2018-03-31 13F COMCAST CORP CL A 20030N101 100,528 87,336 662.04 3,435 550.57 0.2432
2018-02-13 2017-12-31 13F COMCAST CORP CL A 20030N101 13,192 13,192 528 0.0405
2017-08-08 2017-06-30 13F COMCAST CORP CL A 20030N101 0 -13,234 -100.00 0 -100.00
2017-05-12 2017-03-31 13F COMCAST CORP CL A 20030N101 13,234 13,234 498 0.0407
Disclosed Call 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
(%)
2026-05-07 2026-03-31 13F COMCAST CORP CL A Call 110,000 -80.04 3,158 -80.83 n/a n/a n/a
2026-02-09 2025-12-31 13F COMCAST CORP CL A Call 551,100 401.00 16,472 376.62 n/a n/a n/a
2025-11-13 2025-09-30 13F COMCAST CORP CL A Call 110,000 0.00 3,456 -11.95 n/a n/a n/a
2025-08-12 2025-06-30 13F COMCAST CORP CL A Call 110,000 0.00 3,926 -3.30 n/a n/a n/a
2025-05-08 2025-03-31 13F COMCAST CORP CL A Call 110,000 4,059 n/a n/a n/a
2023-08-14 2023-06-30 13F COMCAST CORP CL A Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F COMCAST CORP CL A Call 1,636,600 92.97 62,044 109.19 n/a n/a n/a
2023-09-21 2022-12-31 13F/A COMCAST CORP CL A Call 848,100 29,658 n/a n/a n/a
2023-02-14 2022-12-31 13F COMCAST CORP CL A Call 848,100 29,658 n/a n/a n/a
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
(%)
2026-05-07 2026-03-31 13F COMCAST CORP CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2026-02-09 2025-12-31 13F COMCAST CORP CL A Put 35,400 1,058 n/a n/a n/a
2023-08-14 2023-06-30 13F COMCAST CORP CL A Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F COMCAST CORP CL A Put 503,200 -52.84 19,076 -48.87 n/a n/a n/a
2023-09-21 2022-12-31 13F/A COMCAST CORP CL A Put 1,066,900 37,309 n/a n/a n/a
2023-02-14 2022-12-31 13F COMCAST CORP CL A Put 1,066,900 37,309 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.