First Pacific Advisors, LP: COMCAST CLASS A (CMCSA): Quarterly 13F Position History
As of Q1 2026, First Pacific Advisors, LP reported 8,592,563 shares of COMCAST CLASS A (CMCSA), worth $246.7M and representing 3.5% of its 13F equity book. Quarter-over-quarter share count change: + 192,732 (+2.3%) . The position first appeared in Q4 2017 and has been disclosed across 33 13F-HR filings in Pactolio's tracked window.
- 8,592,563Shares Held (Latest Filing)
- $246.7MReported Market Value (Latest Filing)
- 3.5%Portfolio Weight (% of 13F Equity Book)
- +192,732Quarter-over-Quarter Share Change
- -$4.4MQuarter-over-Quarter Value Change
- 12,496,285Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 33 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 8,592,563 | +192,732 | +2.3% | $246.7M | 3.5% | $28.7 |
| Q4 2025 | 8,399,831 | 2,838,897 | -25.3% | $251.1M | 3.3% | $29.9 |
| Q3 2025 | 11,238,728 | +147,169 | +1.3% | $353.1M | 4.9% | $31.4 |
| Q2 2025 | 11,091,559 | +134,919 | +1.2% | $395.9M | 5.7% | $35.7 |
| Q1 2025 | 10,956,640 | +88,177 | +0.8% | $404.3M | 6.5% | $36.9 |
| Q4 2024 | 10,868,463 | +62,829 | +0.6% | $407.9M | 5.8% | $37.5 |
| Q3 2024 | 10,805,634 | 12,375 | -0.1% | $451.4M | 6.3% | $41.8 |
| Q2 2024 | 10,818,009 | +219,894 | +2.1% | $423.6M | 5.7% | $39.2 |
| Q1 2024 | 10,598,115 | +36,874 | +0.3% | $459.4M | 6.4% | $43.4 |
| Q4 2023 | 10,561,241 | +143,373 | +1.4% | $463.1M | 6.9% | $43.9 |
| Q3 2023 | 10,417,868 | 176,487 | -1.7% | $461.9M | 7.2% | $44.3 |
| Q2 2023 | 10,594,355 | 377,781 | -3.4% | $440.2M | 6.4% | $41.5 |
| Q1 2023 | 10,972,136 | 246,203 | -2.2% | $416.0M | 6.5% | $37.9 |
| Q4 2022 | 11,218,339 | 139,948 | -1.2% | $392.3M | 6.0% | $35.0 |
| Q3 2022 | 11,358,287 | +87,523 | +0.8% | $333.1M | 5.3% | $29.3 |
| Q2 2022 | 11,270,764 | +272,776 | +2.5% | $442.3M | 6.5% | $39.2 |
| Q1 2022 | 10,997,988 | +329,984 | +3.1% | $514.9M | 6.6% | $46.8 |
| Q4 2021 | 10,668,004 | +1,475,742 | +16.1% | $536.9M | 6.7% | $50.3 |
| Q3 2021 | 9,192,262 | 241,366 | -2.6% | $514.1M | 6.7% | $55.9 |
| Q2 2021 | 9,433,628 | 75,835 | -0.8% | $537.9M | 6.7% | $57.0 |
| Q1 2021 | 9,509,463 | 359,707 | -3.6% | $514.6M | 7.0% | $54.1 |
| Q4 2020 | 9,869,170 | 712,820 | -6.7% | $517.1M | 6.7% | $52.4 |
| Q3 2020 | 10,581,990 | 1,200,336 | -10.2% | $489.5M | 7.0% | $46.3 |
| Q2 2020 | 11,782,326 | 585,166 | -4.7% | $459.3M | 6.4% | $39.0 |
| Q1 2020 | 12,367,492 | +1,960,434 | +18.8% | $425.2M | 6.1% | $34.4 |
| Q4 2019 | 10,407,058 | 96,971 | -0.9% | $468.0M | 4.6% | $45.0 |
| Q3 2019 | 10,504,029 | 1,075,043 | -9.3% | $473.5M | 4.6% | $45.1 |
| Q2 2019 | 11,579,072 | 917,213 | -7.3% | $489.6M | 4.3% | $42.3 |
| Q4 2018 | 12,496,285 | +296,521 | +2.4% | $425.5M | 4.1% | $34.0 |
| Q3 2018 | 12,199,764 | +590,059 | +5.1% | $432.0M | 3.1% | $35.4 |
| Q2 2018 | 11,609,705 | +11,575,705 | +34046.2% | $380.9M | 2.7% | $32.8 |
| Q1 2018 | 34,000 | 11,000 | -24.4% | $1.2M | 0.0% | $34.2 |
| Q4 2017 | 45,000 | — | — | $1.8M | 0.0% | $40.0 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did First Pacific Advisors, LP first disclose a CMCSA position in 13F-HR filings?
First Pacific Advisors, LP first reported COMCAST CLASS A (CMCSA) on its 13F-HR filing for the period ending 2017-12-31 (Q4 2017). The position has appeared on 33 reported quarters within Pactolio's tracked window.
What was First Pacific Advisors, LP's most recent quarter-over-quarter share-count change in CMCSA?
Between Q4 2025 and Q1 2026, First Pacific Advisors, LP added 192,732 shares of CMCSA (+2.3%), bringing the total reported position to 8,592,563 shares at a market value of $246.7M.
Does the implied price-per-share represent First Pacific Advisors, LP's cost basis in CMCSA?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.