Antero Midstream Corporation
US ˙ NYSE ˙ US03676B1026

SecurityAM / Antero Midstream Corporation
InstitutionWalleye Capital LLC
Latest Disclosed Ownership13,916 shares
Latest Disclosed Value $ 317,285
Walleye Capital LLC ownership in AM / Antero Midstream Corporation

On May 13, 2026 - Walleye Capital LLC filed a 13F-HR/A form disclosing ownership of 13,916 shares of Antero Midstream Corporation (US:AM) valued at $317,285 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 1,488 shares of Antero Midstream Corporation. This represents a change in shares of 835.22% during the quarter. The current value of the position is $299,472 USD.

Walleye Capital LLC has a history of taking positions in derivatives of the underlying security (AM) in the form of stock options. The firm currently holds call options representing 55,700 of underlying shares valued at $1,269,960 USD and put options representing 95,400 of underlying shares valued at $2,175,120 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

AM / Antero Midstream Corporation Historical Put/Call Ratio
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)
2026-05-13 2026-03-31 13F/A-1 ANTERO MIDSTREAM COM 03676B102 13,916 12,428 835.22 317 1,119.23 0.0013
2026-05-08 2026-03-31 13F ANTERO MIDSTREAM COM 03676B102 13,916 12,428 317 0.0013
2026-02-13 2025-12-31 13F ANTERO MIDSTREAM COM 03676B102 1,488 1,025 221.38 26 188.89 0.0001
2025-11-14 2025-09-30 13F ANTERO MIDSTREAM COM 03676B102 463 -5,000 -91.52 9 -91.26 0.0000
2025-08-13 2025-06-30 13F ANTERO MIDSTREAM COM 03676B102 5,463 4,051 286.90 104 312.00 0.0004
2025-05-14 2025-03-31 13F ANTERO MIDSTREAM COM 03676B102 1,412 -678 -32.44 25 -19.35 0.0001
2025-02-13 2024-12-31 13F ANTERO MIDSTREAM COM 03676B102 2,090 -9,869 -82.52 32 -82.68 0.0001
2024-11-14 2024-09-30 13F ANTERO MIDSTREAM COM 03676B102 11,959 -17,823 -59.84 180 -59.13 0.0004
2024-08-14 2024-06-30 13F ANTERO MIDSTREAM COM 03676B102 29,782 21,263 249.60 439 268.07 0.0008
2024-05-15 2024-03-31 13F ANTERO MIDSTREAM COM 03676B102 8,519 8,519 120 0.0002
2021-05-17 2021-03-31 13F ANTERO MIDSTREAM COM 03676B102 0 -18,817 -100.00 0 -100.00
2021-02-16 2020-12-31 13F ANTERO MIDSTREAM COM 03676B102 18,817 18,817 145 0.0097
2020-05-15 2020-03-31 13F ANTERO MIDSTREAM COM 03676B102 0 -2,199 -100.00 0 -100.00
2020-02-14 2019-12-31 13F ANTERO MIDSTREAM COM 03676B102 2,199 2,199 17 0.0011
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A ANTERO MIDSTREAM COM Call 55,700 114.23 1,270 174.68 n/a n/a n/a
2026-05-08 2026-03-31 13F ANTERO MIDSTREAM COM Call 55,700 1,270 n/a n/a n/a
2026-02-13 2025-12-31 13F ANTERO MIDSTREAM COM Call 26,000 185.71 463 162.50 n/a n/a n/a
2025-11-14 2025-09-30 13F ANTERO MIDSTREAM COM Call 9,100 -65.53 177 -64.80 n/a n/a n/a
2025-08-13 2025-06-30 13F ANTERO MIDSTREAM COM Call 26,400 -4.35 500 0.81 n/a n/a n/a
2025-05-14 2025-03-31 13F ANTERO MIDSTREAM COM Call 27,600 -20.00 497 -4.62 n/a n/a n/a
2025-02-13 2024-12-31 13F ANTERO MIDSTREAM COM Call 34,500 15.38 521 15.81 n/a n/a n/a
2024-11-14 2024-09-30 13F ANTERO MIDSTREAM COM Call 29,900 145.08 450 150.84 n/a n/a n/a
2024-08-14 2024-06-30 13F ANTERO MIDSTREAM COM Call 12,200 58.44 180 65.74 n/a n/a n/a
2024-05-15 2024-03-31 13F ANTERO MIDSTREAM COM Call 7,700 -88.71 108 -87.35 n/a n/a n/a
2024-02-14 2023-12-31 13F ANTERO MIDSTREAM COM Call 68,200 351.66 855 374.44 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ANTERO MIDSTREAM COM Call 15,100 181 n/a n/a n/a
2023-11-14 2023-09-30 13F ANTERO MIDSTREAM COM Call 15,100 181 n/a n/a n/a
2023-08-14 2023-06-30 13F ANTERO MIDSTREAM COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F ANTERO MIDSTREAM COM Call 10,600 111 n/a n/a n/a
2020-05-15 2020-03-31 13F ANTERO MIDSTREAM COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F ANTERO MIDSTREAM COM Call 20,000 23.46 152 26.67 n/a n/a n/a
2019-11-14 2019-09-30 13F ANTERO MIDSTREAM COM Call 16,200 120 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-13 2026-03-31 13F/A ANTERO MIDSTREAM COM Put 95,400 783.33 2,175 1,032.81 n/a n/a n/a
2026-05-08 2026-03-31 13F ANTERO MIDSTREAM COM Put 95,400 2,175 n/a n/a n/a
2026-02-13 2025-12-31 13F ANTERO MIDSTREAM COM Put 10,800 120.41 192 102.11 n/a n/a n/a
2025-11-14 2025-09-30 13F ANTERO MIDSTREAM COM Put 4,900 -49.48 95 -48.09 n/a n/a n/a
2025-08-13 2025-06-30 13F ANTERO MIDSTREAM COM Put 9,700 -7.62 184 -3.17 n/a n/a n/a
2025-05-14 2025-03-31 13F ANTERO MIDSTREAM COM Put 10,500 -92.27 189 -90.78 n/a n/a n/a
2025-02-13 2024-12-31 13F ANTERO MIDSTREAM COM Put 135,900 166.47 2,051 167.28 n/a n/a n/a
2024-11-14 2024-09-30 13F ANTERO MIDSTREAM COM Put 51,000 -67.96 768 -67.31 n/a n/a n/a
2024-08-14 2024-06-30 13F ANTERO MIDSTREAM COM Put 159,200 231.67 2,347 248.07 n/a n/a n/a
2024-05-15 2024-03-31 13F ANTERO MIDSTREAM COM Put 48,000 576.06 675 665.91 n/a n/a n/a
2024-02-14 2023-12-31 13F ANTERO MIDSTREAM COM Put 7,100 -66.51 89 -65.22 n/a n/a n/a
2023-11-21 2023-09-30 13F/A ANTERO MIDSTREAM COM Put 21,200 254 n/a n/a n/a
2023-11-14 2023-09-30 13F ANTERO MIDSTREAM COM Put 21,200 254 n/a n/a n/a
2023-08-14 2023-06-30 13F ANTERO MIDSTREAM COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2023-05-15 2023-03-31 13F ANTERO MIDSTREAM COM Put 1,000 10 n/a n/a n/a
2020-05-15 2020-03-31 13F ANTERO MIDSTREAM COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-02-14 2019-12-31 13F ANTERO MIDSTREAM COM Put 38,100 0.00 289 2.48 n/a n/a n/a
2019-11-14 2019-09-30 13F ANTERO MIDSTREAM COM Put 38,100 282 n/a n/a n/a
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.