Hertz raises the stakes in bidding for Dollar Thrifty car rental

to $78.47 in midday trading. Hertz's stock gained 10 cents to $16.95, while shares of Avis Budget Group Inc. fell 4 cents to $18.37. Dollar Thrifty shareholders stung Hertz in September when they rejected an offer that included $43.60 in cash and 0.6366...