Select Medical Holdings Stake Increased by CSM Advisors

Institutional investor raises position in healthcare services provider

Mar. 17, 2026 at 8:19am

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CSM Advisors LLC increased its stake in Select Medical Holdings Corporation (NYSE:SEM) by 32% during the third quarter, according to a recent 13F filing. The firm now owns nearly 300,000 shares of the healthcare services provider, valued at approximately $3.8 million.

Why it matters

This filing indicates growing institutional investor interest in Select Medical, which operates long-term acute care hospitals and outpatient rehabilitation clinics across the United States. The stock has seen volatility in recent months, making it an attractive target for active investors.

The details

According to the 13F filing, CSM Advisors added 72,546 shares of Select Medical during the third quarter, bringing its total position to 298,961 shares. This represents approximately 0.24% of the company's outstanding stock. Select Medical provides specialized healthcare services through its hospital and outpatient rehabilitation divisions.

  • The 13F filing was submitted in the third quarter of 2026.

The players

CSM Advisors LLC

An institutional investment firm that manages a portfolio of stocks, including a position in Select Medical Holdings Corporation.

Select Medical Holdings Corporation

A leading provider of specialized healthcare services in the United States, operating long-term acute care hospitals and outpatient rehabilitation clinics.

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The takeaway

The increased stake by CSM Advisors in Select Medical suggests growing institutional confidence in the healthcare services company's long-term prospects, despite recent stock price volatility. This could signal potential upside for the stock as investors seek exposure to the specialized healthcare sector.