Bloom Energy, which had recovered after hours, fell almost 13% once regular trading began. Comfort Systems is down about 17% over two sessions. RingCentral kept a gain but gave back much of its early jump.
Thursday evening's extended-hours trading offered a first verdict on a batch of strong earnings reports. Friday's regular session overruled some of them.
The reversals
Bloom Energy's report featured 138% revenue growth and the company's third guidance increase of the year. The stock slid after the release on Thursday evening, then clawed its way back so that premarket quotes on Friday sat slightly above the prior close. Once the regular session opened, that recovery disappeared, and by early afternoon the shares were down 12.8% at about $189.82. Market commentary centered on the company's near-term cash generation and the scale of its capital spending rather than demand.
Comfort Systems USA, the mechanical and electrical contractor whose backlog nearly doubled to $17.8 billion, fell another 9.1% to about $1,162, bringing its two-session decline to about 17%. The company gave no forward guidance and named Chief Accounting Officer Julie Shaeff to succeed Chief Financial Officer Bill George, who will retire after the company files its 2026 annual report.
Western Digital, which guided well above forecasts, fell 2.4%, a wider loss than its early-Friday indication of about 1.3%. Storage peers Seagate and SanDisk were slightly higher at the same time, so the decline was not a sector move.
The partial holds
Deckers Outdoor, which cut its sales forecast while lifting its earnings outlook on tariff refunds, fell 5.7% to about $80.40, a smaller loss than the 8.2% decline indicated before the open.
RingCentral stayed higher, up 7.4% at about $85.30, but well below its early-Friday indication of nearly 16% and its intraday peak of about 23%.
Newmont fell 3.8% as gold hovered near $4,000 an ounce, and Omnicom was little changed.
A week of beats that did not pay
Friday added American Express to the list: a profit beat and a higher forecast, followed by a 3.9% decline. Truist analyst Brian Foran noted that it would be the ninth time in 11 quarters that Amex shares have fallen on a beat if the decline holds.
There is no single explanation for the pattern. Bloom, Comfort Systems and Western Digital all trade as part of the AI-infrastructure complex, which investors have been selling all week. Amex and Deckers sit outside that trade. What the names share is that expectations going into the reports were high enough that a beat was the minimum, and investors appear to have wanted evidence of acceleration or better visibility, such as the forecast Comfort Systems did not provide.
Why the overnight tape misled
Extended-hours trading is thin, and early prices can reflect a handful of orders reacting to headlines before conference calls and full analyses. The regular session brings in the larger investors whose positioning sets the price. Friday was a reminder that the first after-hours move is a weak guide for stocks that have run up on high expectations.
What to watch
Whether the declines extend next week as the largest cloud companies report and update their capital-spending plans, which set the demand outlook for Bloom, Comfort Systems and Western Digital.