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Re:

American Microsystems Became AMI Semiconductor After Investors Bought 80%

A January 2001 trade-press report said American Microsystems changed its name to AMI Semiconductor after investors acquired 80%, leaving GA-Tek with 20%.
From TheFinanceBase Team2 min to read
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Yes. A contemporary report said American Microsystems Inc. changed its name to AMI Semiconductor on January 2, 2001, after Francisco Partners and Citicorp Venture Capital acquired an 80% majority interest from Japan Energy Corp.’s GA-Tek subsidiary. GA-Tek retained 20%. The account was published January 3, 2001, and is the basis for the transaction details below.

Which AMI changed its name?

The company was American Microsystems Inc., an ASIC supplier—not Acadian Asset Management Inc. The 2001 report describes American Microsystems becoming AMI Semiconductor after the ownership transaction.

According to the same contemporary account, Japan Energy acquired American Microsystems from Gould Inc. in 1988. The company moved its headquarters from Santa Clara, California, to Pocatello, Idaho, that year, then relocated its headquarters to San Diego in 2000 while continuing to operate two chip fabs in Idaho. The report described one fab as processing 8-inch wafers and the other as running 5-inch substrates. Semiconductor Business News, January 3, 2001.

How did ownership change?

Ownership position As reported in January 2001
Francisco Partners and Citicorp Venture Capital Acquired a combined 80% majority interest from GA-Tek, according to Semiconductor Business News.
Japan Energy Corp.’s GA-Tek subsidiary Retained 20%, according to Semiconductor Business News.

The report also said GA-Tek held a warrant to purchase an additional 10% stake. It did not report that the warrant was exercised, so that figure should not be treated as part of the completed 80% transaction.

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Why did the company adopt the AMI Semiconductor name?

The report attributed the rationale to Harold Blomquist, then senior vice president of worldwide sales and corporate marketing. It said the name change was intended in part to sharpen AMI’s corporate identity as the company continued IPO plans. This is the rationale as described in the contemporaneous report; it is not a separately confirmed company statement. The report does not establish what happened later to the IPO plan.

What is established about the date and transaction?

Semiconductor Business News gave January 2, 2001, as the effective date of the name change and was published the following day, January 3. It reported that the investors completed previously announced acquisitions of a majority interest. The available account does not independently establish a legal closing date through transaction documents, so the precise date and ownership details here are attributed to that report.

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Does AMI refer to Acadian Asset Management?

No. Acadian Asset Management Inc. is a separate company. Its SEC filing says it changed its name from BrightSphere Investment Group Inc. effective January 1, 2025, and identifies its common stock ticker as AAMI. That later name change should not be confused with American Microsystems becoming AMI Semiconductor in 2001. Acadian Asset Management’s SEC filing.

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