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BlackRock Portfolio Management LLC Insider Profile

4 Followers
BlackRock Portfolio Management LLC, Ten Percent Owner at Hess Midstream Partners, holds 75.59K shares in Clearway Energy (Ticker: CWEN), holds 17.85M shares in York Space Systems, Inc. (Ticker: YSS), holds 35.26M shares in Mediaco Holding (Ticker: MDIA).
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BlackRock Portfolio Management LLC

BlackRock Portfolio Management LLC
Hess Midstream Partners (HESM)
Ten Percent Owner

Ranked #40,058 out of 107,146 Corporate Insiders

Profitable Transactions

50%
2 out of 4 Profitable Transactions

Average Return

+4.90%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

$657M
94.43%
5.13%
0.44%
0.00%
A breakdown of BlackRock Portfolio Management LLC's holdings
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Insider Roles

York Space Systems, Inc.
(YSS)
Ten Percent Owner
Mediaco Holding
(MDIA)
Ten Percent Owner
Clearway Energy
(CWEN)
Ten Percent Owner
Hess Midstream Partners
(HESM)
Ten Percent Owner
Roles that BlackRock Portfolio Management LLC holds in companies
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Most Profitable Insider Trade

Stock:
York Space Systems, Inc.
(YSS)
Rating:Informative Buy
Date:Feb 03, 2026 - Today
Return:+31.10%
The most profitable trade made by BlackRock Portfolio Management LLC
See the Latest Stocks Traded by Insiders

BlackRock Portfolio Management LLC's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
HESM
Hess Midstream Partners
May 30, 2025
Ten Percent Owner
Uninformative Sell
―
$0.00
CWEN
Clearway Energy
May 01, 2026
Ten Percent Owner
Uninformative Buy
―
$2.88M
MDIA
Mediaco Holding
Sep 08, 2025
Ten Percent Owner
Uninformative Buy
282.48
$33.71M
YSS
York Space Systems, Inc.
Feb 03, 2026
Ten Percent Owner
Informative Buy
25.59M
$620.89M
List of latest transactions for each holding click on a transaction to see BlackRock Portfolio Management LLC's performance on stock
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BlackRock Portfolio Management LLC insider profile FAQ

What is the percentage of profitable transactions made by BlackRock Portfolio Management LLC?
The percentage of profitable transactions made by BlackRock Portfolio Management LLC is 50%.
    What is the average return per transaction made by BlackRock Portfolio Management LLC?
    The average return per transaction made by BlackRock Portfolio Management LLC is 4.90%.
      What stocks does BlackRock Portfolio Management LLC hold?
      BlackRock Portfolio Management LLC holds: HESM, CWEN, MDIA, YSS stocks.
        What was BlackRock Portfolio Management LLC’s latest transaction?
        BlackRock Portfolio Management LLC latest transaction was an Uninformative Buy of ―.
          What was BlackRock Portfolio Management LLC's most profitable transaction?
          BlackRock Portfolio Management LLC’s most profitable transaction was an Informative Buy of YSS stock on February 3, 2026. The return on the trade was 31.10%.
            What is BlackRock Portfolio Management LLC's role in Hess Midstream Partners?
            BlackRock Portfolio Management LLC's role in Hess Midstream Partners is Ten Percent Owner.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.