1213 GMT [Dow Jones] UK gambling stocks advance Thursday, helped by a vote to legalize online gaming in the US Wednesday. At this stage, this is the most positive step towards the reopening of the US online gaming market since 2006, notes Collins Stewart. "PartyGaming (PRTY.LN) was set to make $750M of profit in 2006, prior to withdrawing from the US and is set to make only $140M this year," it says. Says an amendment to the bill Wednesday outlawed sites that had continued to operate 'illegally' post the Unlawful Internet Gambling Enforcement Act, which implies a ban on Pokerstars/Full Tilt. "These companies have used their US liquidity to buy market share outside the US, so this would be a major boost to non-US-facing gaming companies." PartyGaming (PRTY.LN) shares +23% at 316p, mostly up on its proposed merger with bWin (BWIN.VI). Playtech (PTEC.LN) +12% at 458p, 888 Holdings (888.LN) +6.5% at 50p, and Sportingbet (SBT.LN) +13% at 64p. (ishaq.siddiqi@dowjones.com) Contact us in London. +44-20-7842-9464 Markettalk.eu@dowjones.com (END) Dow Jones Newswires July 29, 2010 08:13 ET (12:13 GMT)