Assetmark Inc. Boosts Stake in Madison Square Garden Company

Institutional investor increases holdings in sports and entertainment conglomerate

Apr. 20, 2026 at 7:20am

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A high-contrast black and white close-up image of the inner workings of a stock trading floor or banking vault, with a focus on the heavy, industrial textures and forms that represent the financial infrastructure supporting Madison Square Garden's diversified business.The complex financial machinery that powers Madison Square Garden's sports and entertainment empire.NYC Today

Assetmark Inc., an investment management firm, increased its stake in The Madison Square Garden Company (NYSE: MSGS) by 38.7% during the fourth quarter, according to a recent SEC filing. The fund now owns 11,794 shares of the company's stock, valued at $3,051,000 as of the most recent reporting period.

Why it matters

Madison Square Garden Company is a prominent sports and entertainment conglomerate that owns and operates several high-profile professional sports franchises, including the NBA's New York Knicks and the NHL's New York Rangers. The increase in Assetmark's stake suggests institutional investor confidence in the company's long-term growth prospects.

The details

According to the filing, Assetmark Inc. purchased an additional 3,288 shares of Madison Square Garden during the fourth quarter, bringing its total holdings to 11,794 shares. This represents a 38.7% increase in the firm's position compared to the previous quarter. Madison Square Garden has a market capitalization of $8.06 billion and its stock has traded in a range of $183.58 to $345.48 over the past 52 weeks.

  • Assetmark Inc. increased its stake in Madison Square Garden during the fourth quarter of 2025.
  • The SEC filing detailing the transaction was published on April 20, 2026.

The players

Assetmark Inc.

An investment management firm that provides wealth management and financial planning services.

The Madison Square Garden Company

A sports and entertainment conglomerate that owns and operates professional sports franchises, including the NBA's New York Knicks and the NHL's New York Rangers.

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What’s next

Investors will likely continue to monitor Madison Square Garden's financial performance and strategic initiatives as the company navigates the evolving sports and entertainment landscape.

The takeaway

The increase in Assetmark Inc.'s stake in Madison Square Garden highlights the continued interest from institutional investors in the company's diversified sports and entertainment assets, which include some of the most iconic professional sports franchises in the New York metropolitan area.