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Ken Griffin's Amgen Inc. (AMGN) position

Yes: as of Q1 2026, Ken Griffin holds 185K shares of AMGN worth $65M (0.0% 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
$65M
Shares held
185K
% of portfolio
0.0%
Est. average buy price (i)
$313.59
Quarter-end price
$351.85

Estimated trade prices

Average price in quarters with purchases
$270.10
Average prices in quarters with sales
  • Q4 2025: $317.46 (31K shares sold)
  • Q1 2025: $295.30 (504K shares sold)
  • Q3 2024: $327.11 (15K shares sold)
  • Q2 2024: $293.78 (105K shares sold)
  • Q3 2023: $249.56 (327K shares sold)
  • Q4 2022: $268.06 (50K shares sold)
  • Q3 2022: $242.40 (285K shares sold)
  • Q1 2022: $229.76 (72K shares sold)
  • Q3 2021: $230.17 (239K shares sold)

AMGN price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$150$200$250$300$350$40020222023202420252026Sold 239K shares (46.4%) · Q3 2021. Average closing price $230.17 · Price range $212.27–$248.70239KsharessoldAdded 90K shares (32.7%) · Q4 2021. Average closing price $211.06 · Price range $198.88–$227.6090KsharespurchasedSold 72K shares (19.6%) · Q1 2022. Average closing price $229.76 · Price range $219.27–$242.5772KsharessoldAdded 105K shares (35.7%) · Q2 2022. Average closing price $245.05 · Price range $230.71–$256.74105KsharespurchasedSold 285K shares (71.2%) · Q3 2022. Average closing price $242.40 · Price range $224.46–$253.15285KsharessoldSold 50K shares (43.1%) · Q4 2022. Average closing price $268.06 · Price range $229.03–$292.3950KsharessoldAdded 236K shares (359.7%) · Q1 2023. Average closing price $245.47 · Price range $225.79–$275.20236KsharespurchasedAdded 66K shares (21.9%) · Q2 2023. Average closing price $232.04 · Price range $214.27–$253.3766KsharespurchasedSold 327K shares (88.8%) · Q3 2023. Average closing price $249.56 · Price range $218.65–$271.46327KsharessoldNew position of 128K shares · Q1 2024. Average closing price $292.61 · Price range $268.87–$324.56128KsharespurchasedSold 105K shares (82.2%) · Q2 2024. Average closing price $293.78 · Price range $262.75–$319.31105KsharessoldSold 15K shares (65.8%) · Q3 2024. Average closing price $327.11 · Price range $309.38–$337.3815KsharessoldAdded 517K shares (over 1,000%) · Q4 2024. Average closing price $296.69 · Price range $258.78–$328.35517KsharespurchasedSold 504K shares (96.2%) · Q1 2025. Average closing price $295.30 · Price range $258.59–$327.36504KsharessoldAdded 9K shares (45.5%) · Q2 2025. Average closing price $283.30 · Price range $262.28–$309.859KsharespurchasedAdded 122K shares (418.1%) · Q3 2025. Average closing price $290.01 · Price range $271.18–$309.22122KsharespurchasedSold 31K shares (20.5%) · Q4 2025. Average closing price $317.46 · Price range $290.13–$345.4631KsharessoldAdded 65K shares (54.2%) · Q1 2026. Average closing price $356.25 · Price range $320.50–$388.1665Ksharespurchased← Earlier —1 purchase
Average closing price · filing quarter
$356.25
Price range · filing quarter
$320.50 – $388.16
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Added +65K +$23M +54.2% 185K May 15, 2026
Q4 2025 Reduced −31K −$9.8M −20.5% 120K Feb 17, 2026
Q3 2025 Added +122K +$35M +418.1% 151K Nov 14, 2025
Q2 2025 Added +9K +$2.6M +45.5% 29K Aug 14, 2025
Q1 2025 Reduced −504K −$149M −96.2% 20K May 15, 2025
Q4 2024 Added +517K +$153M +6,621.0% 525K Feb 14, 2025
Q3 2024 Reduced −15K −$4.9M −65.8% 8K Nov 14, 2024
Q2 2024 Reduced −105K −$31M −82.2% 23K Aug 14, 2024
Q1 2024 New +128K +$38M – 128K May 15, 2024
Q3 2023 Reduced −327K −$81M −88.8% 41K Nov 14, 2023
Q2 2023 Added +66K +$15M +21.9% 368K Aug 14, 2023
Q1 2023 Added +236K +$58M +359.7% 301K May 15, 2023
Q4 2022 Reduced −50K −$13M −43.1% 66K Feb 14, 2023
Q3 2022 Reduced −285K −$69M −71.2% 115K Nov 14, 2022
Q2 2022 Added +105K +$26M +35.7% 400K Aug 15, 2022
Q1 2022 Reduced −72K −$17M −19.6% 295K May 16, 2022
Q4 2021 Added +90K +$19M +32.7% 367K Feb 14, 2022
Q3 2021 Reduced −239K −$55M −46.4% 277K Nov 15, 2021
Q2 2021 Added +352K +$87M +214.4% 516K Aug 16, 2021
Q1 2021 First covered – – – 164K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
20 grouped rows from 20 quarters

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Common questions

Does Ken Griffin own AMGN?

Yes. As of Q1 2026, Ken Griffin disclosed 185K shares of AMGN, worth $65M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy AMGN?

Ken Griffin held AMGN 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 Ken Griffin sell AMGN?

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

How many shares of AMGN does Ken Griffin own?

Ken Griffin disclosed 185K shares of AMGN as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for AMGN?

Ken Griffin's estimated average buy price for AMGN is $313.59, from quarter-average prices weighted by the shares added each quarter. 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.