KEY POINTS
  • Speaking to CNBC, Vitor Constancio said: "Certainly the cyclically adjusted price earnings ratio in the U.S. is well-above historical averages"
  • The ECB released Wednesday its biannual Financial Stability Review, in which the central bank points to potential risks to the stability of the euro area

The vice-president of the European Central Bank (ECB) warned Wednesday that current high valuations in U.S. equities could spark a possible correction in global stock markets.

Speaking to CNBC, Vitor Constancio said: "Certainly the cyclically-adjusted price (to) earnings ratio in the U.S. is well-above historical averages."