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Ken Griffin's Alliant Energy Corporation (LNT) position

Yes: as of Q1 2026, Ken Griffin holds 290K shares of LNT worth $21M (0.0% of the disclosed portfolio). Last quarter the position was reduced by 55.6%. First disclosed Q2 2021.
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Current value
$21M
Shares held
290K
% of portfolio
0.0%
Est. average buy price (i)
$64.46
Quarter-end price
$71.76

Estimated trade prices

Average price in quarters with purchases
$60.83
Average prices in quarters with sales
  • Q1 2026: $69.04 (363K shares sold)
  • Q4 2025: $67.01 (3.6M shares sold)
  • Q1 2025: $61.16 (1.2M shares sold)
  • Q4 2024: $60.45 (684K shares sold)
  • Q3 2023: $51.83 (173K shares sold)
  • Q2 2023: $53.59 (89K shares sold)
  • Q1 2023: $53.20 (366K shares sold)
  • Q4 2022: $53.40 (513K shares sold)
  • Q1 2022: $59.50 (634K shares sold)

LNT price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$60$65$70$75$802026Added 4.2M shares (over 1,000%) · Q3 2025. Average closing price $64.52 · Price range $60.76–$67.414.2MsharespurchasedSold 3.6M shares (84.8%) · Q4 2025. Average closing price $67.01 · Price range $64.63–$69.473.6MsharessoldSold 363K shares (55.6%) · Q1 2026. Average closing price $69.04 · Price range $64.69–$73.23363Ksharessold← Earlier —8 purchases, 7 sells
Average closing price · filing quarter
$69.04
Price range · filing quarter
$64.69 – $73.23
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −363K −$25M −55.6% 290K May 15, 2026
Q4 2025 Reduced −3.6M −$244M −84.8% 653K Feb 17, 2026
Q3 2025 Added +4.2M +$272M +5,565.1% 4.3M Nov 14, 2025
Q2 2025 Added +74K +$4.5M +4,543.9% 76K Aug 14, 2025
Q1 2025 Reduced −1.2M −$76M −99.9% 2K May 15, 2025
Q4 2024 Reduced −684K −$41M −35.6% 1.2M Feb 14, 2025
Q3 2024 Added +1.2M +$70M +182.0% 1.9M Nov 14, 2024
Q2 2024 New +682K +$34M – 682K Aug 14, 2024
Q3 2023 Reduced −173K −$9.0M −84.7% 31K Nov 14, 2023
Q2 2023 Reduced −89K −$4.8M −30.3% 204K Aug 14, 2023
Q1 2023 Reduced −366K −$19M −55.5% 293K May 15, 2023
Q4 2022 Reduced −513K −$27M −43.8% 659K Feb 14, 2023
Q3 2022 Added +773K +$47M +193.7% 1.2M Nov 14, 2022
Q2 2022 Added +226K +$14M +130.1% 399K Aug 15, 2022
Q1 2022 Reduced −634K −$38M −78.5% 173K May 16, 2022
Q4 2021 Added +772K +$44M +2,182.5% 808K Feb 14, 2022
Q3 2021 Added +14K +$802K +62.3% 35K Nov 15, 2021
Q2 2021 New +22K +$1.2M – 22K Aug 16, 2021
Data through Q1 2026 · filed May 15, 2026
18 grouped rows from 18 quarters

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Common questions

Does Ken Griffin own LNT?

Yes. As of Q1 2026, Ken Griffin disclosed 290K shares of LNT, worth $21M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy LNT?

Ken Griffin first disclosed a LNT position in Q2 2021; every quarterly buy and sell since is in the table above. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell LNT?

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

How many shares of LNT does Ken Griffin own?

Ken Griffin disclosed 290K shares of LNT 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 LNT?

Ken Griffin's estimated average buy price for LNT is $64.46, 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.