Key Highlights

  • Enphase Energy (NASDAQ:ENPH) traded at USD 24.55, down 17.51%, in pre-market trading on Wednesday, October 28, 2026, after its release of Tuesday, October 27, 2026 gave fourth quarter revenue guidance below the third quarter level.
  • Third quarter 2026 revenue came in at USD 293.3 million, with GAAP diluted earnings per share of USD 0.17, non-GAAP diluted earnings per share of USD 0.41 and a GAAP gross margin of 43.3%.
  • Fourth quarter guidance calls for revenue of USD 225.0 million to USD 255.0 million and a GAAP gross margin of 38.0% to 41.0%. Cash and marketable securities stood at USD 931.8 million.
  • Pre-market trading is thin and prices can change before the 9:30 a.m. ET open. The Federal Reserve decision is due later on Wednesday, October 28, 2026.

Pre-Market Move and Its Trigger

Enphase Energy (NASDAQ:ENPH) makes solar microinverters, batteries and energy management systems for homes. Its USD 24.55 pre-market price, down 17.51%, appeared on Wednesday, October 28, 2026. Working back from that snapshot gives a prior close near USD 29.76, a simple calculation. The catalyst was the third quarter 2026 earnings release of Tuesday, October 27, 2026, issued after the close. It paired a profitable quarter with fourth quarter revenue guidance below the third quarter figure. The company said U.S. residential demand still faces headwinds from higher interest rates and the expiry of the Section 25D federal tax credit. U.S. sell-through, the company's measure of product sold onward from its channel, rose 5% from the prior quarter but fell 35% from a year earlier.

How the Latest Results Frame the Move

Enphase booked third quarter 2026 revenue of USD 293.3 million, compared with USD 291.9 million in the second quarter and USD 410.4 million in the third quarter of 2025, a decline of about 28.5% on simple arithmetic. Gross margin was 43.3% on a GAAP basis and 45.0% non-GAAP. After investment impairments that trimmed earnings per share by USD 0.15, GAAP net income reached USD 23.4 million, or USD 0.17 per diluted share, while non-GAAP net income was USD 54.0 million, or USD 0.41 per share. The fourth quarter outlook of USD 225.0 million to USD 255.0 million has a USD 240.0 million midpoint, roughly 18% under the third quarter, and bakes in around 2.0 points of tariff drag on gross margin.

Risks and Signals to Track

Reasons for optimism: USD 931.8 million of cash and marketable securities, a non-GAAP gross margin held at 45.0% and customer pilots of the IQ SST, a solid-state transformer for 800 volt direct current data centre power, due in 2027, with commercial shipments from 2028. Reasons for caution: guidance points to a further revenue decline, a lower gross margin range and continued softness in U.S. demand. Tariffs, the loss of the Section 25D credit and rate sensitivity are the named risks. Fourth quarter guidance also counts about USD 51.2 million of safe harbour revenue, which hinges on tax credit rules. Dates to follow: the Federal Reserve decision later on Wednesday, October 28, 2026, the regular session open at 9:30 a.m. ET and fourth quarter results.

Where Things Stand

In short, Enphase Energy (NASDAQ:ENPH) slid 17.51% to USD 24.55 before the open after its release of Tuesday, October 27, 2026 paired third quarter revenue of USD 293.3 million with fourth quarter guidance of USD 225.0 million to USD 255.0 million. Headline number: the USD 240.0 million guided midpoint, about 18% below the third quarter on simple arithmetic. Catalysts ahead include the Federal Reserve decision due later on Wednesday, October 28, 2026, the regular session open and the next quarterly report. Pre-market prices are snapshots that can change, and this is not investment advice.