Save your place

Sign in to WhoBought

Please try again later.

Ken Griffin's Antero Midstream Corporation (AM) position

Yes: as of Q1 2026, Ken Griffin holds 9K shares of AM worth $202K (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
View full portfolio →
Current value
$202K
Shares held
9K
% of portfolio
0.0%
Est. average buy price (i)
$16.91
Quarter-end price
$22.80

Estimated trade prices

Average price in quarters with purchases
$13.89
Average prices in quarters with sales
  • Q1 2026: $20.65 (69K shares sold)
  • Q3 2025: $18.07 (2.1M shares sold)
  • Q1 2025: $16.56 (111K shares sold)
  • Q2 2024: $14.35 (107K shares sold)
  • Q4 2023: $12.61 (224K shares sold)
  • Q1 2023: $10.64 (3K shares sold)
  • Q1 2022: $10.15 (94K shares sold)
  • Q4 2021: $10.37 (401K shares sold)
  • Q2 2021: $9.55 (219K shares sold)

AM price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$5$10$15$20$2520222023202420252026Added 312K shares (157.2%) · Q3 2021. Average closing price $9.80 · Price range $8.70–$10.65312KsharespurchasedSold 401K shares (78.6%) · Q4 2021. Average closing price $10.37 · Price range $9.26–$11.68401KsharessoldSold 94K shares (85.8%) · Q1 2022. Average closing price $10.15 · Price range $9.23–$11.4994KsharessoldAdded 1.0M shares (over 1,000%) · Q2 2022. Average closing price $10.41 · Price range $9.00–$11.451.0MsharespurchasedNew position of 22K shares · Q4 2022. Average closing price $10.61 · Price range $9.48–$11.3722KsharespurchasedSold 3K shares (13.5%) · Q1 2023. Average closing price $10.64 · Price range $9.79–$11.393KsharessoldAdded 216K shares (over 1,000%) · Q2 2023. Average closing price $10.63 · Price range $9.80–$11.60216KsharespurchasedAdded 169K shares (71.6%) · Q3 2023. Average closing price $11.84 · Price range $11.42–$12.28169KsharespurchasedSold 224K shares (55.3%) · Q4 2023. Average closing price $12.61 · Price range $11.67–$13.38224KsharessoldAdded 520K shares (287.6%) · Q1 2024. Average closing price $12.79 · Price range $11.68–$14.06520KsharespurchasedSold 107K shares (15.3%) · Q2 2024. Average closing price $14.35 · Price range $13.59–$15.02107KsharessoldAdded 23K shares (3.9%) · Q3 2024. Average closing price $14.57 · Price range $13.39–$15.1623KsharespurchasedAdded 19K shares (3.1%) · Q4 2024. Average closing price $15.22 · Price range $14.22–$15.9719KsharespurchasedSold 111K shares (17.6%) · Q1 2025. Average closing price $16.56 · Price range $15.47–$18.04111KsharessoldAdded 1.6M shares (312.3%) · Q2 2025. Average closing price $17.87 · Price range $15.88–$18.991.6MsharespurchasedSold 2.1M shares (97.2%) · Q3 2025. Average closing price $18.07 · Price range $16.87–$19.582.1MsharessoldAdded 18K shares (29.9%) · Q4 2025. Average closing price $18.02 · Price range $17.19–$19.4118KsharespurchasedSold 69K shares (88.7%) · Q1 2026. Average closing price $20.65 · Price range $17.15–$23.6069Ksharessold← Earlier —1 sell
Average closing price · filing quarter
$20.65
Price range · filing quarter
$17.15 – $23.60
Sign in to see who bought

Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −69K −$1.4M −88.7% 9K May 15, 2026
Q4 2025 Added +18K +$324K +29.9% 78K Feb 17, 2026
Q3 2025 Reduced −2.1M −$38M −97.2% 60K Nov 14, 2025
Q2 2025 Added +1.6M +$29M +312.3% 2.2M Aug 14, 2025
Q1 2025 Reduced −111K −$1.8M −17.6% 523K May 15, 2025
Q4 2024 Added +19K +$289K +3.1% 635K Feb 14, 2025
Q3 2024 Added +23K +$334K +3.9% 616K Nov 14, 2024
Q2 2024 Reduced −107K −$1.5M −15.3% 593K Aug 14, 2024
Q1 2024 Added +520K +$6.6M +287.6% 701K May 15, 2024
Q4 2023 Reduced −224K −$2.8M −55.3% 181K Feb 14, 2024
Q3 2023 Added +169K +$2.0M +71.6% 404K Nov 14, 2023
Q2 2023 Added +216K +$2.3M +1,113.8% 236K Aug 14, 2023
Q1 2023 Reduced −3K −$32K −13.5% 19K May 15, 2023
Q4 2022 New +22K +$238K – 22K Feb 14, 2023
Q2 2022 Added +1.0M +$11M +6,728.3% 1.1M Aug 15, 2022
Q1 2022 Reduced −94K −$951K −85.8% 16K May 16, 2022
Q4 2021 Reduced −401K −$4.2M −78.6% 109K Feb 14, 2022
Q3 2021 Added +312K +$3.1M +157.2% 511K Nov 15, 2021
Q2 2021 Reduced −219K −$2.1M −52.4% 198K Aug 16, 2021
Q1 2021 First covered – – – 417K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
20 grouped rows from 20 quarters

More Griffin positions

NVIDIA Corporation(NVDA)
$3.2B
2.3% of portfolio

Amazon.com, Inc.(AMZN)
$1.7B
1.2% of portfolio

Micron Technology, Inc.(MU)
$1.6B
1.1% of portfolio

Taiwan Semiconductor Manufacturing Company Limited(TSM)
$1.4B
1.0% of portfolio

Apple Inc.(AAPL)
$1.3B
0.9% of portfolio

Meta Platforms, Inc.(META)
$1.0B
0.7% of portfolio

Common questions

Does Ken Griffin own AM?

Yes. As of Q1 2026, Ken Griffin disclosed 9K shares of AM, worth $202K. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy AM?

Ken Griffin held AM 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 AM?

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

How many shares of AM does Ken Griffin own?

Ken Griffin disclosed 9K shares of AM 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 AM?

Ken Griffin's estimated average buy price for AM is $16.91, 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.