Similarly, CapitalSource ( CSE) gained ground despite coming in well under Wall Street expectations for the third quarter. Adjusted earnings sank 20% year over year to $97.6 million, or 50 cents a share, against analysts' estimates for 64 cents a share, per Thomson Financial. Still, the Maryland-based lender plans on keeping its 60-cent dividend for the fourth quarter. It also described the credit contraction as having had "minimal impact" on its business. Shares were adding 4.6% to $16.49. Ambac Financial ( ABK) was likewise bouncing after the financial guarantor issued a statement countering Morgan Stanley's recent negative report on the sector. The New York-based company, whose shares have been on a sharp decline for the past month or so, said that Morgan's loss estimates "do not accurately reflect the composition of our underlying mortgage portfolio and the structure of our deals." Ambac also said it has been "very transparent" regarding its direct mortgage and exposure to collateralized debt obligations, and that it will "react quickly" to any applicable performance changes. Shares shot up $3.93, or 16%, to $28.53. Meanwhile, MasterCard ( MA) climbed 8.1% to $200.98 after the Purchase, N.Y., credit card issuer garnered a Deutsche Bank upgrade to buy on the heels of last week's third-quarter earnings, which smashed analyst estimates . But CompuCredit ( CCRT) joined Citigroup on the downside, lately losing 14.1% to $14.06, after the lender widened its third-quarter GAAP-based loss vs. last year and said that "managed" earnings fell 11.2% to 95 cents a share. Analysts were seeking $1.30 a share.