Nisa Investment Advisors Reduces DexCom Stake by Over 50%

Institutional investor sells over 20,000 shares of medical device company in Q4 2025

Apr. 5, 2026 at 9:05am

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Nisa Investment Advisors LLC, a financial advisory firm, reduced its stake in medical device company DexCom, Inc. (NASDAQ: DXCM) by 53.4% during the fourth quarter of 2025, according to a recent SEC filing. The firm sold 20,529 shares, leaving it with 17,919 shares worth $1.19 million in the medical device company.

Why it matters

This filing provides insight into the investment decisions of Nisa Investment Advisors, a prominent institutional investor. The significant reduction in their DexCom holdings could signal a shift in market sentiment or portfolio strategy for the firm, which could impact the stock price and trading volume of the medical device company.

The details

According to the SEC filing, Nisa Investment Advisors sold 20,529 shares of DexCom during the fourth quarter of 2025, reducing its total position by over 50%. The firm now holds 17,919 shares of the medical device company, which were valued at $1.19 million at the end of the reporting period. The filing did not provide specific reasons for the portfolio changes.

  • Nisa Investment Advisors reduced its DexCom stake in Q4 2025.

The players

Nisa Investment Advisors LLC

A financial advisory firm that manages investments for institutional clients.

DexCom, Inc.

A medical device company that develops and manufactures continuous glucose monitoring (CGM) systems for people with diabetes.

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The takeaway

This filing highlights the ongoing shifts in institutional investment strategies within the medical device industry, as firms like Nisa Investment Advisors reevaluate their positions in companies like DexCom. These changes in portfolio composition can have ripple effects on stock prices and trading volumes, underscoring the importance of closely monitoring regulatory filings for insights into the broader market.