SEI · Solaris Energy Infrastructure, Inc.

The thesis

Solaris Energy Infrastructure's raised data-center power guidance and its funded $1.25 billion expansion still support the shares after a two-session pullback driven by rising interest rates. The third-quarter report, expected around 3 November 2026, settles whether adjusted earnings reach the guided range. The shares closed at $73.08 on 8 October 2026, 11.7% under their $82.72 52-week closing high, per adjusted daily closes.

The operating case has not changed since September. On 8 September 2026, management raised third-quarter adjusted earnings before interest, taxes, depreciation and amortization (EBITDA) guidance by 23% to $110–130 million and fourth-quarter guidance by 48% to $145–180 million, and set an initial first-quarter 2027 range of $200–240 million, according to Benzinga. Second-quarter adjusted EBITDA was about $108 million, per the 5 August results, so the third-quarter floor asks for modest sequential growth. Most of the guided climb sits in the fourth quarter and after.

What changed is the price of money. StockStory tied the 7 October decline to the 10-year Treasury yield reaching 5.349%, its highest since April 2002, and the 30-year reaching 5.703%. That matters for a company that closed $1.25 billion of 7.000% senior notes due 2032 on 1 October, per its 8-K. The coupon is fixed, so higher yields do not raise its interest bill, but they lower what the market pays for earnings that arrive in 2027.

The narrative is maturing: the guidance raise and the September round of target increases are widely reported, and the latest moves have come from interest rates and sector flows with no new company announcement since the 1 October debt closing. The broader AI data-center infrastructure group also cooled back to maturing in the week to 9 October after a single accelerating week.

Bullish and bearish views on Solaris Energy Infrastructure, Inc.

The bull case on Solaris Energy Infrastructure, Inc. (SEI), in brief: Guidance points to steep growth. The bear case: Rising long-term yields hit long-dated growth.

Bull case

• Guidance points to steep growth. The 8 September 2026 update guided first-quarter 2027 adjusted EBITDA to $200–240 million, against about $108 million reported for the second quarter of 2026 on 5 August.
• Power revenue is already scaling. Second-quarter 2026 Power Solutions revenue was about $158 million, up 23% sequentially, on about 950 megawatts of average revenue-generating capacity, per the 5 August results.

• Analyst targets sit well above the last close. Barclays raised its target to $116 from $90 on 28 September, per GuruFocus, and Citigroup ($100), Stifel ($101) and Needham ($104) raised theirs in September, per Benzinga. StockAnalysis listed an average target of $101.27 across 14 analysts as of 7 October.
• A director bought on guidance day. Director A. James Teague bought 3,900 shares at $64.21 on 8 September 2026, about $250,000, per MarketBeat's summary of the Form 4.
• Overbought readings have cleared. The 14-day relative strength index (RSI) fell to 55.7 on 8 October from 76.3 on 6 October, so the pullback has worked off the stretched momentum reading ahead of the report.

Bear case

• Rising long-term yields hit long-dated growth. The 10-year Treasury yield reached 5.349% on 7 October 2026, per StockStory, the day the shares fell 4.9% alongside SLB, ProFrac and Peabody.
• Valuation leaves little room for a miss. GuruFocus put the price-to-earnings ratio at 95.20 on 6 October and its own fair-value estimate at $27.55, far below the market price.
• Leverage rises before new capacity earns. The $1.25 billion of notes carries a 7.000% coupon to April 2032, a fixed cost that runs whether or not new megawatts come online on schedule.
• Two end markets blur the numbers. The company still runs an oilfield logistics segment, and StockStory grouped the shares with oil producers and service companies on 7 October, so energy-sector selling reaches the stock even when data-center demand holds.
• The guided ramp is back-loaded. The fourth-quarter range of $145–180 million and the first-quarter 2027 range of $200–240 million carry most of the growth, so the case depends on delivery after the third-quarter report as well.

Price setup

The shares closed at $79.70 on 6 October 2026, up 6.6% on the day, per GuruFocus, then at $76.46 on 7 October, per StockAnalysis, and at $73.08 on 8 October, per adjusted daily closes. The 8 October close is 11.7% below the $82.72 52-week closing high and 9.0% above its level three months earlier.

The nearest reference low is the 25 September 2026 close of $70.97. A weekly close under it would give back the late-September advance that followed the notes pricing. The 14-day RSI of 55.7 on 8 October is neutral after the 76.3 reading two sessions earlier.

Crowding evidence is mixed. GuruFocus measured a 45.2% one-month gain as of 6 October, and the quarterly report falls inside the next 30 days. Against that, the only recent insider transaction is a purchase, and Two Seas Capital disclosed a new stake of 786,838 shares built in the third quarter, per MarketBeat on 6 October. No share issuance has been announced since the debt deal.

Catalysts, next 30 days

• ~13 October 2026 (est.): The company announces its third-quarter results date and call time. The third-quarter 2025 call was scheduled on 13 October 2025, per Business Wire.
• ~3 November 2026 (est.): Third-quarter 2026 results, with the call likely the following day. Last year's third-quarter release came on 3 November 2025 and the call on 4 November. The report shows whether adjusted EBITDA reaches $110–130 million and whether the fourth-quarter and first-quarter 2027 ranges hold.
• Ongoing: Long-term Treasury yields. Further moves above the 5.349% 10-year level of 7 October would keep pressure on long-dated growth names.

What would change the view

The operating case breaks if third-quarter 2026 adjusted EBITDA comes in below the $110 million guidance floor, or if management cuts the $145–180 million fourth-quarter or $200–240 million first-quarter 2027 range. A new equity offering or stock-funded acquisition before the report would also weaken it, because the October debt raise was meant to fund the build-out.

On price, a weekly close below $70.97, the 25 September 2026 close, would show the market rejecting the September re-rating before the report arrives. A sustained climb in the 10-year Treasury yield above the 7 October high of 5.349% alongside that close would point to a rate-driven de-rating that company results alone may not reverse.

What it trades with

The shares trade with the AI data-center power group, including Vicor, Penguin Solutions, Pinnacle-era power names such as Pulse-style suppliers like Power Solutions International, and Dell, and with oilfield services names because of the logistics segment. On 7 October 2026, StockStory grouped the decline with SLB, ProFrac, Peabody Energy and Centrus Energy, which shows the stock responding to energy and rate moves as much as to data-center news. The data-center group cooled to maturing in the week to 9 October, which raises the bar for this name to outperform on its own results. A broad rebound in long-duration growth stocks would likely lift the shares with the group; a further rise in yields would likely weigh on the group together.