NEW YORK (TheStreet) -- San Francisco-based online restaurant reservation company OpenTable (OPEN) came in short on the top line with its latest results, reporting second-quarter revenue of $34.3 million vs. the average analysts' view of $35.3 million.

Shares were tumbling 8.6% to $63.01 in premarket trading Wednesday.

Rental car company

Hertz

(HTZ) - Get Report

reported second-quarter profit of 26 cents a share vs. the Wall Street consensus target of 21 cents a share and raised its 2011 outlook. Shares were adding 6.5% to $13.84.

Shares of

Time Warner

(TWX)

were falling 5.4% to $32.16 in premarket trading Wednesday after the media and entertainment company said it now forecasts that full-year adjusted earnings per share will rise "at least" in the low teens compared with the company's previous expectations that earnings would rise in the low teens.

Time Warner reported

second-quarter adjusted profit

of 60 cents a share vs. the average analyst estimate of 56 cents a share.

Shares of

MasterCard

(MA) - Get Report

were rising 3.2% to $308.03 after the global payments company reported second-quarter earnings of $4.76 vs. the average analyst estimate of $4.23 a share.

Shares of

CBS

(CBS) - Get Report

were rising 1.2% to $26.59 after the media company reported second-quarter profit of 58 cents a share vs. the average analyst estimate of 45 cents a share.

Shares of

Research In Motion

( RIMM) were rising 1.1% to $24.41 in premarket trading Wednesday as it launches three new phones globally to compete against

Google's

(GOOG) - Get Report

Android and

Apple's

(AAPL) - Get Report

iPhone.

Video, high-speed Internet and phone services provider

Comcast

(CMCSA) - Get Report

reported

second-quarter adjusted profit

of 42 cents a share vs. the consensus target of 41 cents a share. Shares were rising 0.8% to $22.90.

Financial services firm

Citigroup

(C) - Get Report

was rising 0.2% to $37.13 as it received first-round bids of between $3 billion to $4 billion for entertainment company

EMI

from more than 10 groups, according to

The Financial Times

.

The final price could allow Citigroup to recover up to three quarters of the $5.5 billion it lent to Guy Hands in his ill-fated buyout of EMI in 2007,

FT

said.

Clorox

(CLX) - Get Report

, the maker of bleach, is expected to report fourth-quarter profit of $1.19 a share on Wednesday vs. last year's earnings of $1.20 a share.

Smith Micro Software

(SMSI) - Get Report

, the Aliso Viejo, Calif.-based developer of mobile connectivity and communications applications, reported a non-GAAP loss of $5.2 million, or 15 cents a share, for the three months ended June 30 with revenue coming in at $16.1 million,

well below a year-ago total of $31.4 million.

The average estimate of analysts polled by

Thomson Reuters

was for a loss of 11 cents a share in the June period on revenue of $17.8 million.

-- Written by Andrea Tse in New York.

>To contact the writer of this article, click here:

Andrea Tse

.

Related links:

Fearful Americans Hoard Bonds, Dividends

S&P Downgrade of U.S. Debt Would Be 'Right Thing'

Copyright 2011 TheStreet.com Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.