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Jeremy Grantham's Comcast Corporation (CMCSA) position

Yes: as of Q1 2026, Jeremy Grantham holds 1.8M shares of CMCSA worth $50M (0.1% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$50M
Shares held
1.8M
% of portfolio
0.1%
Est. average buy price (i)
$39.01
est. since Q1 2021
Quarter-end price
$28.48

Estimated trade prices

Average price in quarters with purchases
$37.53
Average prices in quarters with sales
  • Q3 2025: $33.53 (57K shares sold)
  • Q2 2025: $34.59 (214K shares sold)
  • Q4 2024: $41.51 (54K shares sold)
  • Q3 2024: $39.48 (27K shares sold)
  • Q1 2024: $43.14 (190K shares sold)
  • Q4 2023: $42.86 (156K shares sold)
  • Q3 2023: $44.65 (151K shares sold)
  • Q1 2023: $37.81 (402K shares sold)
  • Q4 2021: $52.12 (118K shares sold)
  • Q2 2021: $55.91 (16K shares sold)

CMCSA price vs Grantham's position

1Y 3Y 5Y MAX
Dates
$20$40$60$8020222023202420252026Added 13K shares (2.2%) · Q3 2021. Average closing price $58.31 · Price range $54.75–$61.7513KsharespurchasedSold 118K shares (19.4%) · Q4 2021. Average closing price $52.12 · Price range $47.71–$57.40118KsharessoldAdded 262K shares (53.3%) · Q1 2022. Average closing price $48.16 · Price range $44.97–$51.68262KsharespurchasedAdded 284K shares (37.6%) · Q2 2022. Average closing price $42.88 · Price range $37.91–$48.11284KsharespurchasedAdded 342K shares (32.9%) · Q3 2022. Average closing price $37.39 · Price range $29.33–$43.37342KsharespurchasedAdded 701K shares (50.9%) · Q4 2022. Average closing price $33.08 · Price range $28.68–$36.71701KsharespurchasedSold 402K shares (19.3%) · Q1 2023. Average closing price $37.81 · Price range $35.28–$41.11402KsharessoldAdded 412K shares (24.6%) · Q2 2023. Average closing price $39.72 · Price range $36.52–$41.67412KsharespurchasedSold 151K shares (7.2%) · Q3 2023. Average closing price $44.65 · Price range $41.21–$47.12151KsharessoldSold 156K shares (8.1%) · Q4 2023. Average closing price $42.86 · Price range $39.15–$44.70156KsharessoldSold 190K shares (10.6%) · Q1 2024. Average closing price $43.14 · Price range $41.24–$46.73190KsharessoldAdded 33K shares (2.1%) · Q2 2024. Average closing price $39.13 · Price range $36.90–$42.2833KsharespurchasedSold 27K shares (1.7%) · Q3 2024. Average closing price $39.48 · Price range $37.33–$41.7727KsharessoldSold 54K shares (3.4%) · Q4 2024. Average closing price $41.51 · Price range $37.39–$45.1454KsharessoldAdded 250K shares (16.2%) · Q1 2025. Average closing price $36.08 · Price range $33.19–$38.23250KsharespurchasedSold 214K shares (11.9%) · Q2 2025. Average closing price $34.59 · Price range $32.84–$36.72214KsharessoldSold 57K shares (3.6%) · Q3 2025. Average closing price $33.53 · Price range $31.41–$36.3357KsharessoldAdded 169K shares (11.1%) · Q4 2025. Average closing price $28.53 · Price range $26.46–$31.07169KsharespurchasedAdded 64K shares (3.8%) · Q1 2026. Average closing price $29.96 · Price range $27.59–$32.5864Ksharespurchased← Earlier —1 sell
Average closing price · filing quarter
$29.96
Price range · filing quarter
$27.59 – $32.58
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +64K +$1.9M +3.8% 1.8M May 14, 2026
Q4 2025 Added +169K +$4.8M +11.1% 1.7M Feb 17, 2026
Q3 2025 Reduced −57K −$1.9M −3.6% 1.5M Nov 13, 2025
Q2 2025 Reduced −214K −$7.4M −11.9% 1.6M Aug 13, 2025
Q1 2025 Added +250K +$9.0M +16.2% 1.8M May 14, 2025
Q4 2024 Reduced −54K −$2.2M −3.4% 1.5M Feb 13, 2025
Q3 2024 Reduced −27K −$1.1M −1.7% 1.6M Nov 13, 2024
Q2 2024 Added +33K +$1.3M +2.1% 1.6M Aug 13, 2024
Q1 2024 Reduced −190K −$8.2M −10.6% 1.6M May 14, 2024
Q4 2023 Reduced −156K −$6.7M −8.1% 1.8M Feb 13, 2024
Q3 2023 Reduced −151K −$6.7M −7.2% 1.9M Nov 13, 2023
Q2 2023 Added +412K +$16M +24.6% 2.1M Aug 14, 2023
Q1 2023 Reduced −402K −$15M −19.3% 1.7M May 12, 2023
Q4 2022 Added +701K +$23M +50.9% 2.1M Feb 13, 2023
Q3 2022 Added +342K +$13M +32.9% 1.4M Nov 10, 2022
Q2 2022 Added +284K +$12M +37.6% 1.0M Aug 12, 2022
Q1 2022 Added +262K +$13M +53.3% 753K May 13, 2022
Q4 2021 Reduced −118K −$6.2M −19.4% 492K Feb 11, 2022
Q3 2021 Added +13K +$777K +2.2% 610K Nov 12, 2021
Q2 2021 Reduced −16K −$909K −2.7% 596K Aug 12, 2021
Q1 2021 First covered – – – 613K May 13, 2021
Data through Q1 2026 · filed May 14, 2026
21 grouped rows from 21 quarters

More Grantham positions

Microsoft Corporation(MSFT)
$2.3B
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Alphabet Inc.(GOOGL)
$1.9B
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Johnson & Johnson(JNJ)
$1.8B
4.6% of portfolio

Apple Inc.(AAPL)
$1.8B
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Meta Platforms, Inc.(META)
$1.7B
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Lam Research Corporation(LRCX)
$1.4B
3.8% of portfolio

Common questions

Does Jeremy Grantham own CMCSA?

Yes. As of Q1 2026, Jeremy Grantham disclosed 1.8M shares of CMCSA, worth $50M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jeremy Grantham buy CMCSA?

Jeremy Grantham held CMCSA since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Jeremy Grantham sell CMCSA?

The quarter-by-quarter table above shows each sale and reduction Jeremy Grantham disclosed in CMCSA. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of CMCSA does Jeremy Grantham own?

Jeremy Grantham disclosed 1.8M shares of CMCSA as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Jeremy Grantham pay for CMCSA?

Jeremy Grantham began building the CMCSA position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.