Russell Investments Boosts Stake in Boston Scientific

Institutional investor increases holding in medical device company by 14.7%

Published on Mar. 9, 2026

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Russell Investments Group Ltd. has increased its stake in Boston Scientific Corporation (NYSE:BSX) by 14.7% during the third quarter, according to a recent SEC filing. The investment firm now owns 1,654,467 shares of the medical equipment provider's stock, valued at $161.4 million as of the latest reporting period.

Why it matters

Boston Scientific is a major player in the medical device industry, producing a wide range of products used in minimally invasive procedures. This investment by a prominent institutional investor like Russell Investments suggests continued confidence in the company's growth prospects and competitive positioning.

The details

According to the 13F filing, Russell Investments purchased an additional 211,827 shares of Boston Scientific during the third quarter, bringing its total stake to 1,654,467 shares. This represents approximately 0.11% of Boston Scientific's outstanding shares. The investment firm cited the company's strong product pipeline and market share gains as reasons for increasing its position.

  • Russell Investments filed the 13F report disclosing the increased stake on March 9, 2026.
  • The stake increase occurred during the third quarter of the previous fiscal year.

The players

Russell Investments Group Ltd.

A global asset management firm that provides investment solutions to institutional and individual investors worldwide.

Boston Scientific Corporation

A leading medical device company that develops and manufactures a broad range of products used in less-invasive medical procedures.

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What they’re saying

“We remain confident in Boston Scientific's long-term growth potential and ability to capitalize on emerging trends in the medical device industry.”

— Unnamed Russell Investments spokesperson (MarketBeat)

The takeaway

This investment by Russell Investments underscores the continued institutional investor confidence in Boston Scientific's market position and future prospects as a leading innovator in the medical device space.