(Updates with milestone, background)
    ** Shares in Poland's e-commerce firm Allegro  ALEP.WA  soar
57% in their market debut, the biggest IPO in Warsaw in ten
years
    ** Allegro jumped up to 69.2 zlotys compared to a 43 zlotys
issue price
    ** The stock is the most heavily traded one among Polish
equities, more than 36.5 million shares changed hands so far,
accounting for nearly half of the volume in Warsaw
    ** Its market capitalisation reached about 66.5 billion
zlotys ($17.57 billion) at opening, overtaking other blue chips
and representing nearly double the value of biggest Polish video
game producer CD Projekt  CDR.WA 
    ** Allegro is the most recognizable e-commerce brand in
Poland, with its website attracting 20 million visitors a month



($1 = 3.7841 zlotys)

 ((Anna.banacka@thomsonreuters.com; anna.pruchnicka@tr.com))