Shares of

City National

(CYN)

were among the

NYSE's

losers Friday, slumping 11% after the bank holding company slashed its 2006 earnings guidance.

The company now sees full-year earnings growth of 1% to 4%, down from an earlier view of 8% to 10%. Based on City National's 2005 earnings of $4.60 a share, the new forecast implies 2006 earnings of $4.65 to $4.78 a share. Analysts polled by Thomson First Call project earnings of $4.94 a share. "Net interest income is increasing more slowly than expected, due principally to lower-than-anticipated deposit growth and higher funding costs," the company said in a regulatory filing late Thursday. Shares were trading down $7.63 to $64.33.

Old Dominion Freight Line

(ODFL) - Get Report

rose 9% after the trucking company lifted its second-quarter earnings projection. The company now sees earnings of 50 cents to 52 cents a share, up from an earlier view of 43 cents to 46 cents a share. Analysts project earnings of 46 cents a share. "Our new earnings guidance is primarily based on a higher-than-expected increase in LTL tonnage for the second quarter, which is now expected to approximately 17%, combined with a more favorable pricing environment, which we believe reflects a steady economy," the company said. Shares were trading up $2.69 to $35.45.

Shares of

Six Flags

(SIX) - Get Report

tumbled 20% after the company said that it is at risk of not complying with certain financial covenants in its bank credit agreement and that recent attendance trends at its amusement parks will make it "extremely difficult" for the company to meet its previous projections for earnings before interest, taxes, depreciation and amortization. "What has been unexpected thus far is that the families we are targeting to replace those teens have been harder to attract than anticipated," the company said. "Make no mistake about it, families are coming back -- as evidenced by our solid increase in per capita guest spending -- but not as quickly as we had hoped."

Six Flags said that it will also explore strategic options for six of its properties, including the possible sale of the parks. Shares were recently trading down $1.50 to $5.95.

Isle of Capri Casinos

(ISLE)

rose 9% after the riverboat casino operator posted better-than-expected fourth-quarter results. For the period ended April 30, the company earned $15.1 million, or 48 cents a share, on revenue of $306.5 million. Excluding certain charges, the company would have earned 86 cents a share. Analysts expected earnings of 56 cents a share on revenue of $300.2 million. A year earlier, the company earned $3.5 million, or 11 cents a share, on revenue of $257 million. Shares were trading up $2.17 to $26.59.

Shares of

Consol Energy

(CNX) - Get Report

rose 9% after Standard & Poor's said it plans to add the producer of coal and methane gas to its

S&P 500

index. Consol will replace

Knight-Ridder

( KRI), which is being acquired by

McClatchy

(MNI) - Get Report

. Shares of Consol were recently up $3.44 to $41.75.

NYSE volume leaders included

Kerr-McGee

(KMG)

, up $18.23 to $68.53;

Western Gas

( WGR), up $18.54 to $59.45;

Sprint Nextel

(S) - Get Report

, down 9 cents to $19.58;

Anadarko Petroleum

(APC) - Get Report

, down $2.89 to $45.50; and

Ford

(F) - Get Report

, up 9 cents to $6.52.

Nasdaq

volume leaders included

Oracle

(ORCL) - Get Report

, up 54 cents to $14.87;

Qualcomm

(QCOM) - Get Report

, down $2.22 to $39.16;

Sirius Satellite Radio

(SIRI) - Get Report

, up 17 cents to $4.36;

Neurocrine Biosciences

(NBIX) - Get Report

, down $3.86 to $9.95;

Intel

(INTC) - Get Report

, down 8 cents to $18.17;

MedImmune

( MEDI), down 54 cents to $26.70;

Applied Materials

(AMAT) - Get Report

, down 44 cents to $16.11;

Microsoft

(MSFT) - Get Report

, down 12 cents to $22.76; and

Apple Computer

(AAPL) - Get Report

, down 21 cents to $59.37.