[1/2] A logo of Alstom is seen at the Alstom's plant in Semeac near Tarbes, France, February 15, 2019.
The shares were heading for their worst one-day drop in over 20 years as of 1140 GMT, down 37%, which wiped some 3 billion euros ($3.16 billion) from Alstom's market value.
The group said it now expects a cash outflow of 500-750 million euros over the full year, after a preliminary first-half outflow of 1.15 billion euros, well above the consensus for a 152 million euro outflow cited by Jefferies.
The cost of insuring Alstom's debt against the risk of default shot to its highest since last November, according to data from S&P Global Market Intelligence.
Citi analysts were less concerned about liquidity, but said "the past track record on cash means cash improvement is now very much a 'show me' story".
Persons:
Regis Duvignau, Jefferies, Angelo Meda, JP Morgan, Olivier Sorgho, Danilo Masoni, Chiara Elisei, Amanda Cooper, Alexander Smith
Organizations:
Alstom, REUTERS, Banor SIM, Deutsche Bank, P Global Market Intelligence, Traders, Citi, Thomson
Locations:
Semeac, Tarbes, France, Paris, Milan, Britain