UAL &lt;UAL> HAS NO COMMENT ON STOCK RISE
  UAL Inc, citing company policy, told
  the New York Stock Exchange it would not comment on the unusual
  rise in its stock.
      UAL, parent of United Airlines, closed up 6-1/4 at 72 on
  volume of 3.9 mln shares.
      Wall Street traders said UAL's stock soared in response to
  the the proposed 4.6 billion dlr buyout offer by United Air's
  pilots union and on a general rise in air fares throughout the
  industry.
  

