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Broadcom Corp., Western Digital Corp. and Spectrum Group International Inc. made big jumps on the 2011 Fortune 500 list of the nation’s largest corporations.

The companies are part of a local contingent of six companies on the annual ranking, which also includes Santa Ana-based Ingram Micro Inc., Newport Beach-based Pacific Life Insurance Co. and Irvine’s Allergan Inc.

Irvine-based chipmaker Broadcom made the biggest jump on the ranking, moving up 117 spots from 2010. It ranked No. 343 based on 2010 sales of $6.8 billion, up 32% from a year earlier.

In April, Broadcom ranked No. 3 on the Business Journal’s annual list of the largest public companies based in Orange County.

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Irvine-based Spectrum Group, a seller of gold and other precious metals, moved up 99 spots on Fortune’s list to No. 381.

Spectrum’s 2010 sales were up 40% to $6 billion as gold prices continued to surge.

The company ranked No. 4 on the Business Journal’s public companies list.

Irvine-based disk drive maker Western Digital Corp. moved up 53 spots to No. 251 with 2010 sales of $9.9 billion, up 32%.

Western Digital ranked No. 2 on the Business Journal’s public companies.

Technology products distributor Ingram Micro, the largest of any company here by sales, ranked No. 75 on the list, up from No. 80 a year earlier.

Ingram’s 2010 sales were up 17% to $34.6 billion.

Fortune also includes life insurer Pacific Life, even though it is privately held by policy holders but reports financial results.

Pacific Life ranked No. 405, down from No. 401 a year earlier. The company saw a 7.5% rise in 2010 revenue to $5.6 billion.

The life insurer's parent company ranked No. 2 on the Business Journal's list of the largest privately held companies, which is in Monday's print edition.

Drug maker Allergan ranked No. 457, up two spots from a year earlier, with 2010 revenue of $4.9 billion, up 9%.

Allergan ranked No. 5 on our April public companies list.