Antero Midstream Partners LP (AM)
Who owns Antero Midstream Partners LP (AM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 69.6% of the shares are freely tradable; institutional investors hold 60.6%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 7.81 | 37,117,209 | -5.3 | 03/31/2026 |
| Vanguard Group Inc | 7.60 | 36,075,910 | -3.1 | 12/31/2025 |
| Amvescap Plc. | 4.54 | 21,556,903 | -8.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 3.85 | 18,299,973 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.12 | 14,809,259 | +0.0 | 03/31/2026 |
| State Street Corp | 2.44 | 11,593,199 | +2.3 | 03/31/2026 |
| Tortoise Midstream Energy Fund, Inc. | 2.35 | 11,159,394 | -2.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Invesco SteelPath MLP Income Y | 2.60 | 12,357,509 | -13.0 | 03/31/2026 |
| iShares Core S&P Mid-Cap ETF | 2.37 | 11,234,209 | +0.0 | 05/29/2026 |
| Vanguard Total Stock Mkt Idx Inv | 2.22 | 10,540,618 | +0.2 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 10. Jul 2026 | Keenan W Howard JR | Director | Other | 1,907 | 0.00 | – |
| 10. Jul 2026 | Dea Peter A | Director | Other | 1,907 | 0.00 | – |
| 10. Jul 2026 | Chisholm Nancy | Director | Other | 1,907 | 0.00 | – |
| 10. Jul 2026 | Mollenkopf John C | Director | Other | 1,907 | 0.00 | – |
| 10. Jul 2026 | Munoz Jeffrey S. | Director | Other | 1,907 | 0.00 | – |
| 10. Jul 2026 | Mcardle Janine J | Director | Other | 1,907 | 0.00 | – |
| 10. Jul 2026 | Keyte David H | Director | Other | 3,225 | 0.00 | – |
| 10. Jul 2026 | Klimley Brooks J | Director | Other | 1,907 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.