Updated

Wall Street ended a mildly erratic day slightly lower Thursday after anxiety about widening credit problems offset investor optimism about a $2 billion capital infusion into troubled mortgage lender Countrywide Financial Corp (CFC).

According to preliminary calculations, the Dow fell 0.25, or less than 0.01 percent, to 13,235.88.

Broader indexes fell modestly. The Standard & Poor's 500 index lost 1.57, or 0.11 percent, closing at 1,462.50, and the Nasdaq composite index fell 11.10, or 0.43 percent, to 2,541.70