Sun Country Airlines Holdings Sees Stake Increase by CSM Advisors

Institutional investor CSM Advisors LLC boosts its position in the airline company by nearly 30% in Q3 2025.

Mar. 16, 2026 at 9:09am

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According to a recent 13F filing, CSM Advisors LLC increased its stake in Sun Country Airlines Holdings, Inc. (NASDAQ:SNCY) by 29.7% in the third quarter of 2025. The institutional investor now owns 507,038 shares, or about 0.96% of the company's stock, valued at $5,987,000 at the end of the quarter.

Why it matters

This investment move by CSM Advisors indicates their confidence in Sun Country Airlines' growth potential, as the low-cost carrier continues to expand its leisure-focused route network and charter services. The stock's performance and institutional ownership are closely watched by industry analysts.

The details

CSM Advisors acquired an additional 116,121 shares of Sun Country Airlines in Q3 2025, bringing its total position to 507,038 shares. This makes the firm one of the larger institutional investors in the airline, which went public in 2021. Sun Country has been working to diversify its business beyond scheduled passenger service, including growing its charter operations for sports teams, corporate groups, and e-commerce peak seasons.

  • CSM Advisors filed its 13F report disclosing the increased stake in Sun Country Airlines on March 16, 2026.
  • The additional 116,121 shares were acquired by CSM Advisors during the third quarter of 2025.

The players

CSM Advisors LLC

An institutional investment firm that manages a portfolio of stocks, including a 0.96% stake in Sun Country Airlines Holdings.

Sun Country Airlines Holdings, Inc.

An American ultra-low-cost carrier providing scheduled and charter passenger services, focused on leisure markets.

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What they’re saying

“We must continue to monitor Sun Country Airlines' performance and growth strategy as they navigate the competitive low-cost carrier landscape.”

— Analyst

The takeaway

This increase in institutional ownership of Sun Country Airlines suggests Wall Street's confidence in the company's ability to capitalize on the rebound in leisure travel demand and expand its diversified business model beyond scheduled passenger service.