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Jeremy Grantham's Quest Diagnostics Incorporated (DGX) position

Yes: as of Q1 2026, Jeremy Grantham holds 1.9M shares of DGX worth $369M (0.9% 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
$369M
Shares held
1.9M
% of portfolio
0.9%
Est. average buy price (i)
$132.95
est. since Q1 2021
Quarter-end price
$195.92

Estimated trade prices

Average price in quarters with purchases
$141.83
Average prices in quarters with sales
  • Q3 2025: $177.47 (2K shares sold)
  • Q2 2025: $173.69 (259K shares sold)
  • Q1 2025: $164.28 (262K shares sold)
  • Q4 2022: $143.70 (215K shares sold)
  • Q3 2022: $131.69 (37K shares sold)
  • Q2 2022: $136.26 (34K shares sold)
  • Q1 2022: $139.38 (9K shares sold)

DGX price vs Grantham's position

1Y 3Y 5Y MAX
Dates
$100$150$200$25020222023202420252026Added 57K shares (3.3%) · Q3 2021. Average closing price $146.32 · Price range $132.95–$158.0057KsharespurchasedAdded 6K shares (0.3%) · Q4 2021. Average closing price $152.16 · Price range $140.36–$173.016KsharespurchasedSold 9K shares (0.5%) · Q1 2022. Average closing price $139.38 · Price range $129.09–$164.359KsharessoldSold 34K shares (1.9%) · Q2 2022. Average closing price $136.26 · Price range $127.07–$145.3934KsharessoldSold 37K shares (2.1%) · Q3 2022. Average closing price $131.69 · Price range $121.77–$141.1037KsharessoldSold 215K shares (12.7%) · Q4 2022. Average closing price $143.70 · Price range $123.31–$157.28215KsharessoldAdded 15K shares (1.0%) · Q1 2023. Average closing price $143.07 · Price range $131.53–$155.7715KsharespurchasedAdded 100K shares (6.7%) · Q2 2023. Average closing price $137.86 · Price range $130.56–$146.84100KsharespurchasedAdded 38K shares (2.4%) · Q3 2023. Average closing price $133.24 · Price range $121.86–$144.9238KsharespurchasedAdded 69K shares (4.2%) · Q4 2023. Average closing price $131.47 · Price range $120.62–$141.1269KsharespurchasedAdded 338K shares (19.8%) · Q1 2024. Average closing price $129.75 · Price range $123.78–$142.11338KsharespurchasedAdded 85K shares (4.2%) · Q2 2024. Average closing price $136.94 · Price range $125.91–$144.3485KsharespurchasedAdded 114K shares (5.4%) · Q3 2024. Average closing price $149.34 · Price range $136.64–$156.97114KsharespurchasedAdded 26K shares (1.2%) · Q4 2024. Average closing price $155.53 · Price range $146.90–$163.8926KsharespurchasedSold 262K shares (11.6%) · Q1 2025. Average closing price $164.28 · Price range $150.33–$176.95262KsharessoldSold 259K shares (12.9%) · Q2 2025. Average closing price $173.69 · Price range $159.80–$182.07259KsharessoldSold 2K shares (under 0.1%) · Q3 2025. Average closing price $177.47 · Price range $166.42–$190.582KsharessoldAdded 70K shares (4.0%) · Q4 2025. Average closing price $182.09 · Price range $173.53–$192.3570KsharespurchasedAdded 67K shares (3.7%) · Q1 2026. Average closing price $194.29 · Price range $173.49–$211.9167Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$194.29
Price range · filing quarter
$173.49 – $211.91
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +67K +$13M +3.7% 1.9M May 14, 2026
Q4 2025 Added +70K +$13M +4.0% 1.8M Feb 17, 2026
Q3 2025 Reduced −2K −$275K −0.1% 1.7M Nov 13, 2025
Q2 2025 Reduced −259K −$45M −12.9% 1.7M Aug 13, 2025
Q1 2025 Reduced −262K −$43M −11.6% 2.0M May 14, 2025
Q4 2024 Added +26K +$4.1M +1.2% 2.3M Feb 13, 2025
Q3 2024 Added +114K +$17M +5.4% 2.2M Nov 13, 2024
Q2 2024 Added +85K +$12M +4.2% 2.1M Aug 13, 2024
Q1 2024 Added +338K +$44M +19.8% 2.0M May 14, 2024
Q4 2023 Added +69K +$9.0M +4.2% 1.7M Feb 13, 2024
Q3 2023 Added +38K +$5.1M +2.4% 1.6M Nov 13, 2023
Q2 2023 Added +100K +$14M +6.7% 1.6M Aug 14, 2023
Q1 2023 Added +15K +$2.1M +1.0% 1.5M May 12, 2023
Q4 2022 Reduced −215K −$31M −12.7% 1.5M Feb 13, 2023
Q3 2022 Reduced −37K −$4.9M −2.1% 1.7M Nov 10, 2022
Q2 2022 Reduced −34K −$4.7M −1.9% 1.7M Aug 12, 2022
Q1 2022 Reduced −9K −$1.3M −0.5% 1.8M May 13, 2022
Q4 2021 Added +6K +$847K +0.3% 1.8M Feb 11, 2022
Q3 2021 Added +57K +$8.4M +3.3% 1.8M Nov 12, 2021
Q2 2021 Added +177K +$23M +11.5% 1.7M Aug 12, 2021
Q1 2021 First covered – – – 1.5M May 13, 2021
Data through Q1 2026 · filed May 14, 2026
21 grouped rows from 21 quarters

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Common questions

Does Jeremy Grantham own DGX?

Yes. As of Q1 2026, Jeremy Grantham disclosed 1.9M shares of DGX, worth $369M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Jeremy Grantham buy DGX?

Jeremy Grantham held DGX 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 DGX?

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

How many shares of DGX does Jeremy Grantham own?

Jeremy Grantham disclosed 1.9M shares of DGX 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 DGX?

Jeremy Grantham began building the DGX 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.