American Century Companies Reduces Stake in Axcelis Technologies

Semiconductor company sees institutional investor sell off shares

Mar. 2, 2026 at 6:07pm

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American Century Companies Inc. has reduced its stake in Axcelis Technologies, Inc. (NASDAQ:ACLS) by 18.9% in the third quarter, according to a recent SEC filing. The investment firm now owns 1,345,761 shares of the semiconductor company's stock, down from 1,659,463 shares previously.

Why it matters

Axcelis Technologies is a leading manufacturer of ion implantation and cleaning equipment used in semiconductor chip fabrication. The reduction in stake by a major institutional investor like American Century Companies could signal a shift in sentiment around the company's prospects.

The details

According to the 13F filing, American Century Companies sold 313,702 shares of Axcelis Technologies during the third quarter. The firm now owns 4.34% of the company's outstanding shares, down from 5.35% previously. Axcelis Technologies has a market capitalization of $2.54 billion.

  • The 13F filing covers the third quarter of 2026.

The players

American Century Companies Inc.

A major institutional investment firm that has reduced its stake in Axcelis Technologies.

Axcelis Technologies, Inc.

A leading manufacturer of semiconductor manufacturing equipment, including ion implantation and cleaning systems.

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The takeaway

The reduction in stake by American Century Companies could signal a shift in sentiment around Axcelis Technologies, which is a key supplier to the semiconductor industry. Investors will be watching to see if other major institutional holders make similar moves in the coming quarters.