Quiet, narrowing ranges often come before strong moves, because supply dries up while buyers build positions. This screen lists stocks on the London Stock Exchange whose 21-day price range was at least 15% tighter than the 68-day range within the last 10 days, and which have now crossed above a resistance line of the SNR indicator on at least 1.5 times average volume. LSE prices are quoted in pence, and the list skips thinly traded shares.
