Why is Alstom stock sliding today?

Alstom stock is falling 9.8% to trade at €10.55, extending a brutal two-session rout that began when the French rail manufacturer released shock preliminary first-half fiscal 2026/27 results on November 2.

Results revealed an adjusted EBIT margin collapse to approximately -4% from a positive 6.4% in the same period a year earlier, driven by gross margin write-downs on the Coradia Max electric multiple unit platform due to industrialization difficulties and homologation delays in Germany.

Management simultaneously slashed its full-year FY2026/27 adjusted EBIT margin guidance to approximately 1% from approximately 6.5% previously, while free cash flow guidance swung from positive to a projected negative €1.5 billion — a reversal that stunned investors.

Today’s continued slide is being driven by a cascade of analyst actions directly tied to yesterday’s profit warning. Deutsche Bank cut its price target to €13.00 from €19.00 while maintaining a Hold rating, slashing its earnings per share estimates by approximately 33% on average from FY2027/28 onwards, and JPMorgan downgraded the stock from Overweight to Neutral following the guidance cut.

Citi also moved to Neutral from Buy, adding further institutional pressure. Compounding the concern, net debt nearly tripled over just six months to €1.1 billion as of September 30, 2026, from €0.4 billion at end-March 2026, raising balance sheet questions even as the company announced a €2 billion debt reduction plan and secured a new revolving credit facility of the same size.

The broader market context offers Alstom no relief. While the CAC 40 was actually resilient on November 2 — rising modestly as the rest of the Paris bourse held firm ahead of the U.S. midterm elections — Alstom stood as the worst performer on the French index by a wide margin, confirming the move is entirely company-specific rather than a sector-wide or macro-driven event. Global equity sentiment today is also slightly cautious amid AI valuation concerns, though this is a negligible factor relative to Alstom’s idiosyncratic crisis.

Taken together, the combination of a deeply negative first-half operating margin, a dramatic reversal in cash flow guidance, a near-tripling of net debt, and a wave of analyst downgrades published today has created a sustained and severe de-rating of the stock.

With Alstom now trading at a new 52-week low of €10.51 intraday — far below its 52-week high of €30.23 — and a Capital Markets Day not scheduled until the second quarter of 2027, investors appear unwilling to step in front of what remains a highly uncertain operational and financial recovery.