Earnings guidance explained: what raising, cutting or reaffirming an outlook means

Over two days in late October 2026, listed companies changed their forecasts in several ways. Sprouts Farmers Market's 28 October results release put its 2026 earnings-per-share outlook at about $4.80, below the $5.32 to $5.40 it gave in July, without naming the change, which Polstob calls a cut. On 29 October Trane Technologies raised its revenue forecast while reaffirming its earnings-per-share range (release), and Merck narrowed its sales and adjusted earnings ranges and raised their midpoints (release). In Tokyo the same day, Komatsu and Ibiden filed revised full-year forecasts on TDnet, the exchange's disclosure system (Komatsu, Ibiden). What such changes mean depends partly on the rules behind them, which differ sharply between New York, the EU and Tokyo.

Guidance, also called an outlook or forecast, is a company's own estimate of figures it has not yet reported, such as a year's sales, profit or earnings per share (EPS). It usually comes as a range; the midpoint sits halfway between the ends. To reaffirm guidance is to repeat it unchanged; to narrow it is to bring the ends closer together, which can leave the midpoint where it was or move it. Many outlooks are adjusted, or non-GAAP, figures that strip out items the company treats as unusual; Polstob's earnings-report explainer, linked below, covers how they differ from GAAP.

Merck's new sales range lifts the floor by $0.5bn and keeps the $67.3bn ceiling, moving the midpoint from $66.8bn to $67.05bn by Polstob's arithmetic. Its non-GAAP EPS midpoint rises from $2.71 to $2.795, also Polstob arithmetic. The new EPS range includes one-time charges of $3.62 a share for the Cidara acquisition, $2.31 for Terns and $0.12 for a licence deal with SciBrunch; the August range already included the first two, and Merck says the SciBrunch charge is new to its outlook (release).

US securities law does not treat guidance as a separate category. A projection of revenues, income or EPS falls within the statutory definition of a forward-looking statement in 15 U.S.C. 78u-5, the safe harbor added by the PSLRA, a 1995 litigation reform law. In private lawsuits, an SEC-reporting company is not liable for such a statement if it was labelled forward-looking and came with meaningful cautionary statements naming important factors that could make actual results differ materially, if it was immaterial, or if the plaintiff cannot prove it was made or approved by an executive officer who knew it was false or misleading. The safe harbor applies in private actions brought under the Exchange Act, the section says.

The same section says it imposes no duty to update a forward-looking statement. That does not mean companies never need to correct guidance. Nor does the safe harbor apply everywhere: initial public offerings, tender offers, GAAP financial statements and penny-stock issuers are among the exclusions. Releases carry matching language. Sprouts labels its statements as forward-looking under the 1995 act in its release, and Trane warns that actual results may differ materially from its expectations.

How guidance reaches the market is shaped by Regulation FD (fair disclosure). Under 17 CFR 243.100, a company that shares material nonpublic information (important facts not yet public) with market professionals such as brokers and fund managers, or with holders likely to trade on it, must publish it at the same time if the disclosure was intentional, and promptly if not, with exceptions such as advisers who owe it a duty of confidence. Promptly means as soon as reasonably practicable once a senior official knows of it, and at the latest within 24 hours or by the NYSE's next opening, whichever comes later. A Form 8-K or another broad public channel satisfies the rule. Foreign private issuers fall outside it.

Regulation FD does not ban talking to analysts; it bars selective disclosure. Adopting it in August 2000, the SEC's Release 33-7881 singled out the practice of analysts seeking "guidance" on earnings forecasts. If an official privately signals that earnings will be above, below or in line with analysts' forecasts, whether openly or through indirect hints, the company has likely broken the rule, the release says. The SEC also cited reports of advance earnings warnings given to analysts or chosen institutions before the public. Filing a Form 8-K is one way Regulation FD lets a company make information public. Sprouts' 8-K with its new outlook was filed with the SEC at 16:04:02 EDT (UTC-4) on 28 October.

The EU's Market Abuse Regulation (MAR) does not mention guidance as such. It works through the concept of inside information, defined in Article 7 as precise, nonpublic information about an issuer or its securities that, once published, would probably move their prices significantly. Under Article 17(1), an issuer must inform the public of inside information that directly concerns it as soon as possible, must not mix that disclosure with marketing its activities, and must keep the information on its website for at least five years. Since 5 June 2026, after amendments by the EU Listing Act, only the final event or circumstances of a protracted process must be disclosed.

The EU sources reviewed set no general duty to publish guidance. Since 5 June 2026, MAR lets an issuer delay disclosing inside information only if, among other conditions, the information is not in contrast with its latest public announcement on that matter; this replaced a test of whether a delay would mislead the public, ESMA says. A Commission delegated regulation of 8 April 2026 lists a material change to previously announced forecasts, financial results or business objectives among such contrasts, citing profit warnings and earnings surprises as examples. ESMA's October 2026 final report deletes the 2022 guideline on delays likely to mislead the public.

In Tokyo, the earnings report is called kessan tanshin. Rule 404 of the Tokyo Stock Exchange's Securities Listing Regulations requires results to be disclosed immediately once settled, and in practice the report carries a full-year forecast, as Komatsu's does. Rule 405 requires immediate disclosure when a new forecast or actual result differs materially from the latest published forecast (or, failing one, last year's actuals) for sales, operating profit, ordinary profit or net income. Ordinary profit is a Japanese accounting line; voluntary IFRS adopters use profit before taxes instead, the rule says. The English text is a reference translation dated 16 October 2026, and the exchange says the Japanese original prevails.

The exchange's Enforcement Rules (Rule 407, also a reference translation) put numbers on "material". A sales forecast triggers disclosure when the new figure divided by the old reaches at least 1.1 or at most 0.9, a 10% change either way. For operating profit, ordinary profit and net income the bands are 1.3 and 0.7, or 30% either way, and a previous forecast of zero always counts. The exchange's Japanese-language FAQ adds that a range forecast is tested at both its upper and lower ends, and that a switch between profit and loss always requires disclosure. Its English guidebook (December 2023) says disclosure runs through TDnet and that the exchange may issue alerts when required disclosures, including forecast revisions, are missing.

Komatsu's interim report (US GAAP, 29 October) revised the forecast for the year to March 2027 that it had published on 29 July: sales to ¥4,450,000m (+3.4%), operating profit to ¥585,000m (+5.4%), pre-tax profit to ¥548,000m (+7.9%) and net income attributable to shareholders to ¥382,000m (+9.5%). It cites stronger construction-machinery demand and a weaker yen in the second quarter, and keeps its second-half rate assumptions of ¥150.0 per dollar and ¥174.0 per euro. Ibiden revised its 4 August forecast on 29 October to sales of ¥565,000m (+2.7%), operating profit of ¥133,000m (+4.7%), ordinary profit of ¥134,500m (+5.9%) and net income of ¥89,000m (+6.0%), citing higher orders for products for generative-AI servers, a better product mix and a weaker yen.

By Polstob's comparison, every change is below the Rule 407 thresholds that make disclosure mandatory, though the exchange's FAQ calls publishing new forecasts below them desirable. Like US releases, Komatsu's report carries a cautionary note that actual results may differ significantly from its forecasts.