Nisa Investment Advisors Reduces Boston Scientific Stake

Institutional investor sells over 18,000 shares of medical device company

Apr. 1, 2026 at 10:34am

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Nisa Investment Advisors LLC, a major institutional investor, reduced its stake in Boston Scientific Corporation by 4.6% in the fourth quarter, selling 18,182 shares of the medical equipment provider's stock.

Why it matters

Boston Scientific is a leading global medical device company, so changes in major institutional investor holdings can signal shifts in market sentiment around the company and its prospects.

The details

According to a recent SEC filing, Nisa Investment Advisors now owns 372,831 shares of Boston Scientific, valued at $35.5 million at the end of the reporting period. The sale represents a 4.6% reduction in Nisa's position in the company.

  • Nisa Investment Advisors made the share sale in the fourth quarter of 2025.

The players

Nisa Investment Advisors LLC

A major institutional investor that manages over $37 billion in assets.

Boston Scientific Corporation

A global medical device company that develops and markets a wide range of products used in less-invasive medical procedures.

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The takeaway

This transaction suggests that at least one major institutional investor has become more cautious about Boston Scientific's near-term prospects, though the company remains a leader in the medical device industry. Analysts will be closely watching for any further shifts in institutional ownership of Boston Scientific stock.