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Ken Griffin's Arch Capital Group Ltd. (ACGL) position

Yes: as of Q1 2026, Ken Griffin holds 99K shares of ACGL worth $9.4M (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
$9.4M
Shares held
99K
% of portfolio
0.0%
Est. average buy price (i)
$92.57
Quarter-end price
$94.35

Estimated trade prices

Average price in quarters with purchases
$78.11
Average prices in quarters with sales
  • Q1 2026: $95.66 (273K shares sold)
  • Q3 2025: $89.70 (575K shares sold)
  • Q1 2025: $92.28 (144K shares sold)
  • Q4 2023: $81.72 (4K shares sold)
  • Q2 2023: $72.31 (419K shares sold)
  • Q1 2023: $65.71 (505K shares sold)
  • Q3 2022: $45.18 (228K shares sold)
  • Q4 2021: $42.43 (133K shares sold)
  • Q3 2021: $39.61 (42K shares sold)
  • Q2 2021: $39.59 (597K shares sold)

ACGL price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$30$100$15020222023202420252026Sold 42K shares (20.6%) · Q3 2021. Average closing price $39.61 · Price range $36.82–$42.1042KsharessoldSold 133K shares (81.7%) · Q4 2021. Average closing price $42.43 · Price range $38.18–$44.60133KsharessoldAdded 104K shares (350.0%) · Q1 2022. Average closing price $46.49 · Price range $44.07–$48.56104KsharespurchasedAdded 211K shares (158.1%) · Q2 2022. Average closing price $46.36 · Price range $42.23–$49.96211KsharespurchasedSold 228K shares (65.9%) · Q3 2022. Average closing price $45.18 · Price range $41.67–$47.83228KsharessoldAdded 807K shares (686.6%) · Q4 2022. Average closing price $55.83 · Price range $45.56–$63.62807KsharespurchasedSold 505K shares (54.6%) · Q1 2023. Average closing price $65.71 · Price range $61.26–$71.70505KsharessoldSold 419K shares (99.6%) · Q2 2023. Average closing price $72.31 · Price range $67.89–$77.31419KsharessoldAdded 42K shares (over 1,000%) · Q3 2023. Average closing price $77.82 · Price range $73.62–$82.2742KsharespurchasedSold 4K shares (9.8%) · Q4 2023. Average closing price $81.72 · Price range $73.42–$90.004KsharessoldAdded 1.5M shares (over 1,000%) · Q1 2024. Average closing price $84.55 · Price range $75.55–$92.441.5MsharespurchasedNew position of 156K shares · Q3 2024. Average closing price $104.00 · Price range $94.47–$114.22156KsharespurchasedAdded 177K shares (113.2%) · Q4 2024. Average closing price $100.95 · Price range $88.71–$114.86177KsharespurchasedSold 144K shares (43.1%) · Q1 2025. Average closing price $92.28 · Price range $88.13–$96.94144KsharessoldAdded 493K shares (260.2%) · Q2 2025. Average closing price $92.27 · Price range $84.99–$96.82493KsharespurchasedSold 575K shares (84.2%) · Q3 2025. Average closing price $89.70 · Price range $85.61–$94.22575KsharessoldAdded 265K shares (245.7%) · Q4 2025. Average closing price $91.55 · Price range $83.94–$97.39265KsharespurchasedSold 273K shares (73.4%) · Q1 2026. Average closing price $95.66 · Price range $90.65–$101.98273Ksharessold← Earlier —1 sell
Average closing price · filing quarter
$95.66
Price range · filing quarter
$90.65 – $101.98
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −273K −$26M −73.4% 99K May 15, 2026
Q4 2025 Added +265K +$24M +245.7% 373K Feb 17, 2026
Q3 2025 Reduced −575K −$52M −84.2% 108K Nov 14, 2025
Q2 2025 Added +493K +$45M +260.2% 682K Aug 14, 2025
Q1 2025 Reduced −144K −$13M −43.1% 189K May 15, 2025
Q4 2024 Added +177K +$18M +113.2% 333K Feb 14, 2025
Q3 2024 New +156K +$16M – 156K Nov 14, 2024
Q1 2024 Added +1.5M +$123M +3,670.2% 1.5M May 15, 2024
Q4 2023 Reduced −4K −$351K −9.8% 40K Feb 14, 2024
Q3 2023 Added +42K +$3.3M +2,879.4% 44K Nov 14, 2023
Q2 2023 Reduced −419K −$30M −99.6% 1K Aug 14, 2023
Q1 2023 Reduced −505K −$33M −54.6% 420K May 15, 2023
Q4 2022 Added +807K +$45M +686.6% 925K Feb 14, 2023
Q3 2022 Reduced −228K −$10M −65.9% 118K Nov 14, 2022
Q2 2022 Added +211K +$9.8M +158.1% 345K Aug 15, 2022
Q1 2022 Added +104K +$4.8M +350.0% 134K May 16, 2022
Q4 2021 Reduced −133K −$5.6M −81.7% 30K Feb 14, 2022
Q3 2021 Reduced −42K −$1.7M −20.6% 163K Nov 15, 2021
Q2 2021 Reduced −597K −$24M −74.4% 205K Aug 16, 2021
Q1 2021 First covered – – – 802K 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 ACGL?

Yes. As of Q1 2026, Ken Griffin disclosed 99K shares of ACGL, worth $9.4M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy ACGL?

Ken Griffin held ACGL 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 ACGL?

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

How many shares of ACGL does Ken Griffin own?

Ken Griffin disclosed 99K shares of ACGL 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 ACGL?

Ken Griffin's estimated average buy price for ACGL is $92.57, 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.