Not every gap up holds. When a stock opens sharply higher and then sells off below the open, early buyers are trapped and the move can unwind. This screen lists stocks on the London Stock Exchange that opened more than 3% above yesterday's close but now trade below today's open on at least 1.5 times average volume. Short sellers fade such gaps toward the previous close; long traders use the list to avoid chasing weak openings. LSE prices are quoted in pence, and the list skips thinly traded shares.
