Updated from 11:33 a.m. EDT

Shares of West Marine ( WMAR) were among Thursday's big Nasdaq losers after the retailer of boating supplies warned that second-quarter earnings and sales would fall short of expectations.

The company said sales were affected by cool and wet weather in some of its key markets. As a result, second-quarter sales are now expected to be between $252 million and $256 million. Earnings, meanwhile, will be between $1.16 a share and $1.18 a share vs. previous guidance of $1.20 a share to $1.23 a share. Analysts polled by Thomson First Call had expected West Marine to report second-quarter earnings of $1.22 a share on sales of $259.9 million. Shares of West Marine traded down $2.36, or 8.8%, to $24.49.

Hooker Furniture ( HOFT) rose after the furniture manufacturer reported better-than-expected second-quarter earnings and sales. Earnings were 47 cents a share on sales of $91.5 million. Analysts had been expecting earnings of 40 cents a share on sales of $84.9 million. Looking ahead, Hooker says that it is "fairly bullish" on the third quarter and expects to report an 8% to 12% improvement in sales vs. the year-ago period. Shares of Hooker Furniture traded up 97 cents, or 4.8%, to $21.14.

Shares of Ceradyne ( CRDN) rose after the Costa Mesa, Calif.-based body-armor maker announced the acquisition of German-based Wacker Ceramics for about $136 million in cash. Ceradyne said it made the acquisition so that it could diversify its sales, have more control over the raw materials it requires and gain a stronger global presence. The acquisition is expected to close during the third quarter. Shares of Ceradyne traded up $2.90, or 8.1%, to $38.67.

Childtime Learning Centers ( CTIM) rose after it swung to a fourth-quarter profit. The child care provider reported earnings of 7 cents a share vs. a year-ago loss of 6 cents a share. Sales climbed 16% to $52.9 million. Shares of Childtime Learning Centers traded up 71 cents, or 30.5%, to $3.04.

Shares of CapitalSource ( CSE) fell after the finance company said it plans to sell $300 million in convertible debentures. Initial purchasers will also have the right to buy an additional $30 million in debentures as well. CapitalSource said that it plans to use the proceeds to repay debt and for general corporate purposes. Shares of CapitalSource traded down $1.54, or 6.3%, to $22.91.

NYSE volume leaders included Lucent ( LU), down 17 cents to $3.61; Cardinal Health ( CAH), down $17.19 to $52.86; General Electric ( GE), down 39 cents to $32.01; Nortel Networks ( NT), down 17 cents to $4.82; and Pfizer ( PFE), down 35 cents to $33.93.

Nasdaq volume leaders included Microsoft ( MSFT), up 7 cents to $28.63; Intel ( INTC), down 58 cents to $27.02; Oracle ( ORCL), down 12 cents to $11.81; Cisco ( CSCO), down 59 cents to $23.11; Sun Microsystems ( SUNW), down 17 cents to $4.16; Applied Materials ( AMAT), down 62 cents to $19; and Yahoo! ( YHOO), down $2.10 to $34.30.

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