Citigroup Boosts Stake in Columbia Banking System

Investment firm increases ownership of Pacific Northwest bank by 25%

Published on Mar. 2, 2026

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Citigroup Inc. has increased its stake in Columbia Banking System, Inc. (NASDAQ:COLB) by 25.1%, adding 62,432 shares to its existing position. The institutional investor now owns 310,841 shares, or about 0.15% of the financial services provider's stock, worth $8 million as of the most recent SEC filing.

Why it matters

This transaction indicates Citigroup's confidence in Columbia Banking System's growth potential in the Pacific Northwest market. As a major regional bank, Columbia's performance is seen as a bellwether for economic conditions in Washington, Oregon and Idaho.

The details

According to the SEC filing, Citigroup purchased the additional 62,432 shares of Columbia Banking System during the third quarter. This increased the investment firm's total stake in the company to 310,841 shares. Columbia Banking System operates a network of branches across the Pacific Northwest, offering commercial and consumer banking services.

  • Citigroup increased its stake in Columbia Banking System during the third quarter of the year.

The players

Citigroup Inc.

A multinational investment bank and financial services corporation headquartered in New York City.

Columbia Banking System, Inc.

A regional bank holding company that operates Columbia State Bank, with branches across Washington, Oregon and Idaho.

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The takeaway

Citigroup's increased investment in Columbia Banking System signals the investment firm's positive outlook on the regional bank's prospects, which could be seen as a vote of confidence in the broader economic health of the Pacific Northwest.