Quick Takeaways
- BlackRock Portfolio Management LLC has 4 issuer positions tracked on this page.
- Estimated disclosed ownership value: $2,006,652,968.
- Recent insider filing activity is available below.
- Info
- Significant Ownership
- Insider Ownership
Insider Trading & Ownership of BlackRock Portfolio Management LLC
- Location
- New York, NY
- Summary
- The estimated value of insider holdings of BlackRock Portfolio Management LLC is at least $2,006,652,968 dollars as of 02 Apr 2026. BlackRock Portfolio Management LLC is the 10%+ Owner of Clearway Energy, Inc. and owns shares of Clearway Energy, Inc. (CWEN) stock worth about $1.27B. BlackRock Portfolio Management LLC is the 10%+ Owner of Hess Midstream LP and owns shares of Hess Midstream LP (HESM) stock worth about $691.72M. BlackRock Portfolio Management LLC is the 10%+ Owner of Mediaco Holding Inc. and owns shares of Mediaco Holding Inc. (MDIA) stock worth about $46.54M.
- Signature
- BlackRock Portfolio Management LLC By: /s/ Julie Ashworth, Authorized Signatory
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow BlackRock Portfolio Management LLC and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: Clearway Energy, Inc. ($1,268,397,879).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Official SEC Source
Filed on Form 4
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
See Original FilingOwnership of BlackRock Portfolio Management LLC
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| CWEN, CWEN-A | Clearway Energy, Inc. | 10%+ Owner | $1,268,397,879 | 31 Mar 2026 | ||
| HESM | Hess Midstream LP | 10%+ Owner | $691,715,221 | -$553,729,977 | -44% | 30 May 2025 |
| MDIA | Mediaco Holding Inc. | 10%+ Owner | $46,539,868 | -$282 | -0% | 05 Sep 2025 |
| YSS | Yellowstone Midco Holdings II, LLC | 10%+ Owner | 30 Jan 2026 |
Insider Transactions Reported by BlackRock Portfolio Management LLC:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.