Volcom Inc.'s (VLCM: chart) shares gained 41% in their debut Thursday, well above its offer prices. The company's shares began trading at $26.01 up from its iinitial public offering price of $19.

Volcom priced 4.69 million shares at $19 a share, above the projected price range of $15 to $17 a share issued two weeks ago. Almost 4.19 million of the shares were issued by the company, while 500,000 shares were sold by shareholders.

After the offering, the company said existing stockholders would hold 80.5% of total shares of common stock while new investors would own nearly 19.5%.

Volcom expected to raise $60.7 million in the offering, but raised $89 million. In a filing with the Securities and Exchange Commission, the company declared it intended to use $20 million of the net proceeds to distribute to existing stockholders, $4 million to develop a presence in Europe and the rest for infrastructure, marketing, working capital and general corporate purposes.

The offering was underwritten by Wachovia Securities, D.A. Davidson and Piper Jaffray.

Volcom's shares rose 52.6% to close at $28.99 on Friday.

Also on Thursday, Silicon Motion Technology Corp. (SIMO: chart), a Taiwan-based chip-maker, priced its American depositary shares at $10.50, at the midpoint of the proposed price range of $9.50-$11.50 a share. The stock opened at $10.60 and ended the day of its market debut at $10.50.

The company's shares gained 1.5% to close at $10.66 Friday.

The retailer DSW Inc. (DSW: chart) priced 14.06 million shares above their $15-$17 expected range, raising $267.1 million with underwriter Lehman Brothers. The company's stock closed at $24.10 on the day of its market debut, well above its $19 offer price as it marked a strong debut on the NYSE.

The company's stock closed at $25.85 Friday, up 30% from its offer price.

NeuStar (NSR: chart) priced 27.5 million shares at $22 each, yielding proceeds of $605 million. The pricing came in above the expected range of $18 to $20, and the number of shares offered was lifted from 25 million. Morgan Stanley, CS First Boston and JP Morgan led the deal's underwriting.

The company's stock closed at $26 Friday, up 18.2% from its IPO price.

Deerfield Triarc (DFR: chart), a REIT, priced 25 million shares at $16 in a bid to raise $400 million. The stock closed unchanged at the IPO price to mark a flat market debut.

Deerfield's shares slid 0.3% to close at $15.95 Friday.

Western Alliance (WAL: chart), regional bank in Nevada, Arizona, and California, priced 3.75 million shares at $22 late Wednesday, above the previously announced price range of $19 to $22 a share. Sandler O'Neill was the lead underwriter on the deal.

The company's stock closed at $26 Friday, up 18.2% from its offer price.

HemoSense (HEM: chart), medical-device maker, traded near its $5.50 offering price in its market debut Tuesday. The stock opened at $5.50 a share and closed up 2 cents to $5.52.

In May, Hemosense filed to offer 2.6 million shares at between $9 and $13 each. Later in the month, however, HemoSense said it planned to be offering 3.5 million shares at $8-$10 a share with underwriters Lazard Capital Markets, W.R. Hambrecht and Roth Capital Markets. On June 20, HemoSense slashed its price range to $7-$9, from $8-$10. Last Wednesday, the company cut its price range to $6-$8 a share before pricing on Tuesday below the downwardly revised range at $5.50. Hemosense raised $19.3 million in the IPO by offering 3.5 million shares.

Hemosense shares closed at $5.55 Friday, almost flat with its offer price of $5.50.