There are electronic markets where stocks trade after hours. Perhaps that is what he meant? With Newsnight’s market reporting you just never know.
Well this is a first, they have in the past reported up markets down, down markets up and once even reported dramatic moves in a market that was closed. Paul Mason has just breathlessly reported from New York that a late breaking after market story on the Bloomberg newswire has “halved AIG’s share price on the futures markets”. There is no open futures market for shares, as anybody who knew anything about financial markets would know.