The stock market put together its first four-day winning streak since October and sealed its first up week in five weeks on Friday.The Dow Jones Industrial Average rose 54 points, or 0.8%, to 7223.98, while the S&P 500 added 6 points, or 0.8%, to 756.55. The Nasdaq Composite also ended Friday's session with gains, tacking on 5.4, or 0.4%, to 1431.50. For the week, the Dow rose 9%, the S&P 500 soared 10.7%, and the Nasdaq added 10.6%. Quite a few positive events happened in the financial world this week. Providing a huge boost on Tuesday was the news that Citigroup ( C) was making money this quarter. That led to chuckles in some quarters, considering that Citi has received billions in bailout funds from the U.S. government.