PSC Approves NorthWestern Merger
Published . Updated .
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The Public Service Commission this week approved a merger between NorthWestern Energy and South Dakota-based Black Hills Corporation. Once the deal is finalized, the $15.4 billion merger will create a new utility, Bright Horizon Energy, which will provide electric and natural
Directly affected
- BKH Black Hills
Named in this report.
Indirectly affected
- XLU Utilities Select Sector SPDR
Utilities Select Sector SPDR holds the utilities sector that Black Hills belongs to, so it often moves with news about it.
- NEE NextEra Energy
NextEra Energy is a peer of Black Hills in electric services; rivals often move on the same news.
- SO The Southern
The Southern is a peer of Black Hills in electric services; rivals often move on the same news.
- CEG Constellation Energy
Constellation Energy is a peer of Black Hills in electric services; rivals often move on the same news.
- AEP American Electric Power
American Electric Power is a peer of Black Hills in electric services; rivals often move on the same news.
- D Dominion Energy
Dominion Energy is a peer of Black Hills in electric services; rivals often move on the same news.
Price reaction, T-5 to T+3
| Ticker | T-5 | T-3 | T-1 | T0 | T+1 | T+2 | T+3 |
|---|---|---|---|---|---|---|---|
| BKH | -2.98% | -0.42% | base | -0.66% | after close | after close | after close |
| XLU | -1.55% | -0.21% | base | +0.18% | after close | after close | after close |
| NEE | +1.91% | +1.11% | base | -0.55% | after close | after close | after close |
| SO | -0.15% | +1.31% | base | +0.92% | after close | after close | after close |
| CEG | -11.54% | -5.19% | base | -1.32% | after close | after close | after close |
| AEP | -1.87% | -0.85% | base | -0.16% | after close | after close | after close |
| D | +1.67% | +1.33% | base | -0.18% | after close | after close | after close |
Closing-price change versus T-1, the last close before the story. T0 to T+3 fill in after each market close. Prices: Alpaca IEX.
PSC Approves NorthWestern Merger Flathead Beacon
Source: Flathead Beacon
This story
| Company | When | Move | Status |
|---|---|---|---|
| AEP | that day | -0.16% | still updating |
| AEP | three days earlier | -0.85% | final price |
| AEP | five days earlier | -1.87% | final price |
| BKH | that day | -0.66% | still updating |
| BKH | three days earlier | -0.42% | final price |
| BKH | five days earlier | -2.98% | final price |
| CEG | that day | -1.32% | still updating |
| CEG | three days earlier | -5.19% | final price |
| CEG | five days earlier | -11.54% | final price |
| D | that day | -0.18% | still updating |
| D | three days earlier | +1.33% | final price |
| D | five days earlier | +1.67% | final price |
| NEE | that day | -0.55% | still updating |
| NEE | three days earlier | +1.11% | final price |
| NEE | five days earlier | +1.91% | final price |
| SO | that day | +0.92% | still updating |
| SO | three days earlier | +1.31% | final price |
| SO | five days earlier | -0.15% | final price |
| XLU | that day | +0.18% | still updating |
| XLU | three days earlier | -0.21% | final price |
| XLU | five days earlier | -1.55% | final price |
Trades by members of Congress and officials in the stocks in this story
- Rep. Kevin Hern sold Nextera Energy (NEE) (jointly held), worth $15,001 - $50,000 on 2 Oct 2026. That is 42 days before publication. Filed 13 Oct 2026. View the filing.
- Rep. Kevin Hern sold Nextera Energy (NEE) (jointly held), worth $15,001 - $50,000 on 14 Sep 2026. That is 60 days before publication. Filed 25 Sep 2026. View the filing.
- Rep. Kevin Hern sold Nextera Energy (NEE) (jointly held), worth $1,001 - $15,000 on 2 Sep 2026. That is 72 days before publication. Filed 25 Sep 2026. View the filing.
- Donald J Trump, an executive branch official, sold Southern (SO), worth $250,001 - $500,000 on 21 Aug 2026. That is 84 days before publication. Filed 8 Oct 2026. View the filing.
- Donald J Trump, an executive branch official, sold Constellation Energy (CEG), worth $1,001 - $15,000 on 24 Aug 2026. That is 81 days before publication. Filed 8 Oct 2026. View the filing.
- Donald J Trump, an executive branch official, bought Constellation Energy (CEG), worth $100,001 - $250,000 on 21 Aug 2026. That is 84 days before publication. Filed 8 Oct 2026. View the filing.
- Rep. Rohit Khanna sold American Electric Power (AEP) (held by a spouse), worth $15,001 - $50,000 on 25 Sep 2026. That is 49 days before publication. Filed 7 Oct 2026. View the filing.
- Rep. David J. Taylor bought American Electric Power (AEP), worth $1,001 - $15,000 on 26 Aug 2026. That is 79 days before publication. Filed 5 Sep 2026. View the filing.
Public disclosure filings, not a recommendation. The filing link is the source document. News use of these reports still sits under 5 U.S.C. § 13107(c).
How solid “PSC Approves NorthWestern Merger” looks
12 out of 100Price not final
“PSC Approves NorthWestern Merger” scores 12 out of 100. The score uses 1 sources. The price is not final yet.