BlackRock Portfolio Management LLC
- SEC CIK
- 0002052113
In the past year, 1 open-market purchase filing worth $25.6M and 4 sale filings worth $18.6M.
Current role at each company
- CWEN Clearway Energy, Inc.10% Owneras of Sep 25, 2026
- YSS York Space Systems Inc.10% Owneras of Aug 10, 2026
- MDIA Mediaco Holding Inc.10% Owneras of Sep 8, 2025
- HESM Hess Midstream LP10% Owneras of May 30, 2025
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- $25.6M
- 1 filing
- Sold
- $18.6M
- 4 filings
- Net
- +$6.97M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists BlackRock Portfolio Management LLC as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
YSS York Space Systems Inc.
10% Owner5 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 10, 2026 (view filing)6:16 PM ET | Aug 6-7 | 4 days | BlackRock Portfolio Management LLC10% Owner | SSale | −401.7K | $11.30 | −$4.54M | −2.4%16.5M after | 2 lots |
| Aug 10, 2026 (view filing)6:02 PM ET | Aug 4-5 | 6 days | BlackRock Portfolio Management LLC10% Owner | SSale | −674.6K | $15.15 | −$10.2M | −3.8%16.9M after | Amended4 lots |
| Aug 4, 2026 (view filing)4:17 PM ET | Jul 31-Aug 3 | 4 days | BlackRock Portfolio Management LLC10% Owner | SSale | −49.3K | $15.11 | −$745.3K | −0.3%17.6M after | 2 lots |
| Jul 31, 2026 (view filing)4:47 PM ET | Jul 29-30 | 2 days | BlackRock Portfolio Management LLC10% Owner | SSale | −204.2K | $15.22 | −$3.11M | −1.1%17.6M after | 2 lots |
| Feb 3, 2026 (view filing) | Jan 30 | 4 days | BlackRock Portfolio Management LLC10% Owner | PPurchase | +752.5K | $34.00 | +$25.6M | +4.4%17.8M after |
MDIA Mediaco Holding Inc.
10% Owner1 trade
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 8, 2025 (view filing) | Sep 5 | 3 days | BlackRock Portfolio Management LLC10% Owner | SSaleClass A Common Stock | −214 | $1.32 | −$282.48 | 0.0%35.3M after |
HESM Hess Midstream LP
10% Owner3 trades
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 30, 2025 (view filing) | May 30 | Same day | BlackRock Portfolio Management LLC10% Owner | SSaleClass A Shares | −15.0M | $36.86 | −$553.7M | −100.0%0 after | |
| Feb 19, 2025 (view filing) | Feb 19 | Same day | BlackRock Portfolio Management LLC10% Owner | SSaleClass A Shares | −1.65M | $39.11 | −$64.5M | −100.0%0 after | |
| Feb 13, 2025 (view filing) | Feb 12 | 1 day | BlackRock Portfolio Management LLC10% Owner | SSaleClass A Shares | −11.0M | $39.11 | −$430.2M | −100.0%0 after |