Construction sector stocks trailed the main Paris index on Tuesday, weighed down by a note from Bank of America. Saint-Gobain (-3.69% at 83.62 euros) was the biggest loser on the CAC 40, closely followed by Eiffage (-3.59% at 120.95 euros) and Vinci (-3.48% at 117.80 euros). "We are becoming progressively much more cautious regarding French concession sector stocks," BofA stated, having downgraded Eiffage to Neutral and Vinci to Underperform.

Concerns are mounting over both a potential tightening of fiscal policy in France and what are seen as weak organic growth prospects for the 2026 and 2027 financial years.

The American bank said it now favors "infrastructure groups exposed to the United States and European airports showing positive inflections in their free cash flow." Its preferred stocks are Ferrovial, ACS, Zurich Airport, Sacyr, and National Grid.

Eiffage and Vinci are also being impacted by the French government’s intention to levy 2.5 billion euros from motorway concessionaires to fund infrastructure projects, a measure that will mechanically weigh on their profits.

This scenario, still distant, depends on a future programming law.