California IPO Aftermarket Report

Here are five big gainers and five big losers among California-based companies that made their first sales of stock to the public, or initial public offerings, between Jan. 1 and Sept. 11.

Gainers

Firm (City): Rambus Inc. (Mountain View)

Industry: Semiconductors

Offer date: May 14

Offer price: $12

Tuesday close: $66.13

% chg. from offering: +451%

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Firm (City): Onsale Inc. (Mountain View)

Industry: Business services

Offer date: April 17

Offer price: $6

Tuesday close: $22.25

% chg. from offering: +271

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Firm (City): DAOU Systems Inc. (San Diego)

Industry: Computer networks

Offer date: Feb. 13

Offer price: $9

Tuesday close: $29.00

% chg. from offering: +222

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Firm (City): BEA Systems Inc. (Sunnyvale)

Industry: Software

Offer date: April 11

Offer price: $6

Tuesday close: $17.13

% chg. from offering: +186

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Firm (City): Peregrine Systems Inc. (San Diego)

Industry: Software

Offer date: April 9

Offer price: $9

Tuesday close: $20.25

% chg. from offering: +125

Losers

Firm (City): Micro Therapeutics Inc. (San Clemente)

Industry: Medical equipment

Offer date: Feb. 19

Offer price: $6

Tuesday close: $2.88

% chg. from offering: --52%

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Firm (City): Four Media Co. (Burbank)

Industry: Motion pictures

Offer date: Feb. 7

Offer price: $10

Tuesday close: $6.38

% chg. from offering: --36

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Firm (City): HealthDesk Corp. (Berkeley)

Industry: Online health care

Offer date: Jan. 17

Offer price: $5

Tuesday close: $3.25

% chg. from offering: --35

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Firm (City): Overland Data Inc. (San Diego)

Industry: Computer storage

Offer date: Feb. 21

Offer price: $10

Tuesday close: $6.88

% chg. from offering: --31

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Firm (City): Accelgraphics Inc. (San Jose)

Industry: Software

Offer date: April 11

Offer price: $9

Tuesday close: $6.75

% chg. from offering: --25

Source: IPO Monitor