Antero Midstream Corporation
US ˙ NYSE ˙ US03676B1026

SecurityAM / Antero Midstream Corporation
InstitutionCI Private Wealth, LLC
Latest Disclosed Ownership54,154 shares
Latest Disclosed Value $ 1,063,886
CI Private Wealth, LLC reports 33.40% increase in ownership of AM / Antero Midstream Corporation

On May 15, 2026 - CI Private Wealth, LLC filed a 13F-HR form disclosing ownership of 54,154 shares of Antero Midstream Corporation (US:AM) valued at $1,234,711 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on March 9, 2026 disclosing 40,595 shares of Antero Midstream Corporation. This represents a change in shares of 33.40% during the quarter. The current value of the position is $1,151,856 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ANTERO MIDSTREAM COM 03676B102 54,154 13,559 33.40 1,064 47.23 0.0015
2026-03-09 2025-12-31 13F/A-1 ANTERO MIDSTREAM COM 03676B102 40,595 27,967 221.47 722 194.69 0.0010
2026-02-19 2025-12-31 13F ANTERO MIDSTREAM COM 03676B102 38,679 26,051 688 0.0009
2025-11-14 2025-09-30 13F ANTERO MIDSTREAM COM 03676B102 12,628 12,628 245 0.0004
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.