Groupon IPOs with market cap of $ 12.65B. The frenzy for Internet IPOs will compete with the frenzy surrounding Greece in market trading today as Groupon (GRPN) makes its Nasdaq debut after selling shares for $ 20 each, a steep mark-up from a range of $ 16-$ 18 earlier this week. The price gives the loss-making daily deals site a value of $ 12.65B, above Xerox (XRX), for example. As with LinkedIn (LNKD), Groupon stoked demand by only offering a small percentage of its shares. And despite increasing that yesterday, the company is selling just 6.3%, which will net it up to $ 805M.

G20 may let IMF print money to help solve EU debt crisis. The G20 is considering allowing the IMF to print up to $ 250B more of its special currency to help resolve the eurozone crisis, The Wall Street Journal reports. However, for the IMF to issue the Special Drawing Rights, which are IOUs that countries can exchange for cash, the EU has to finalize a credible strategy to solve its problems. The SDRs would theoretically help assure investors that countries such as Italy had a pool of reserves it can tap in an emergency, and so lead to lower borrowing costs. The IMF would become a lender of last resort, a role the ECB is conspicuously refusing to take on.

Greek PM bullied into dropping referendum plan. The latest cliff-hanger in the Greek debt soap opera is due to take place today with a vote of confidence in parliament. The vote comes after huge international and domestic pressure forced Prime Minister George Papandreou to drop his plan for a referendum over Greece’s eurozone membership and bailout. Meanwhile, Italy’s transfiguration into Greece has taken another step, with Reuters reporting that Italy will allow the IMF and EU to monitor its progress in meeting pension, labor and structural reform goals. "We need to make sure there is credibility with Italy’s targets," an EU source says. Just like they did with Greece.

Diamonds aren’t forever for Oppenheimers. Anglo American (AAUKF.PK) has agreed to buy the Oppenheimer family’s 40% stake in De Beers for $ 5.1B, thereby increasing its stake to 85% in the diamond miner. However, the Botswana government has a pre-emption right over the Oppenheimer holding that would lift its stake to 25% and limit Anglo American to 75%. The sale will end the Oppenheimers’ 80-year association with De Beers.