There is convincing evidence showing that the probability distributions of
stock returns in mature markets exhibit power-law tails and both the positive
and negative tails conform to the inverse cubic law. It supports the
possibility that the tail exponents are universal at least for mature markets
in the sense that they do not depend on stock market, industry sector, and
market capitalization. We investigate the distributions of one-minute intraday
returns of all the A-share stocks traded in the Chinese stock market, which is
the largest emerging market in the world.