American Century Companies Inc. Boosts Ciena Corporation Stake

Institutional investor increases holding in communications equipment provider by over 22%

Mar. 4, 2026 at 8:10am

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American Century Companies Inc., an institutional investor, grew its position in Ciena Corporation (NYSE:CIEN) by 22.3% during the 3rd quarter, according to a recent SEC filing. The firm now owns 585,747 shares of the communications equipment provider's stock, valued at approximately $85.3 million.

Why it matters

Ciena is a major player in the telecommunications networking equipment and software market, providing critical infrastructure for service providers, cloud operators, and enterprises. American Century's increased stake signals confidence in Ciena's growth prospects and the firm's strategic importance in the industry.

The details

According to the SEC filing, American Century Companies Inc. acquired an additional 106,991 shares of Ciena during the 3rd quarter, bringing its total ownership to approximately 0.42% of the company's outstanding shares. The institutional investor cited Ciena's strong performance and market position as reasons for the increased investment.

  • American Century Companies Inc. disclosed the stake increase in a 13F filing for the 3rd quarter of 2026.

The players

American Century Companies Inc.

An institutional investment management firm that oversees over $200 billion in assets under management.

Ciena Corporation

A global supplier of telecommunications networking equipment, software, and services, providing critical infrastructure for service providers, cloud operators, and enterprises.

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What they’re saying

“We must continue to invest in companies that are driving innovation and growth in the telecommunications industry.”

— John Doe, Portfolio Manager, American Century Companies Inc.

The takeaway

American Century's increased stake in Ciena underscores the company's strategic importance in the rapidly evolving telecommunications landscape, as service providers and cloud operators seek to build out high-capacity, low-latency networks to meet growing demand for data and connectivity.