SCHEDULE: William Blair Discloses 4.3% Stake in GeneDx Holdings

Sentiment:

Beneficial Ownership Report


William Blair Investment Management, LLC has reported a 4.3% beneficial ownership stake in GeneDx Holdings Corp. common stock.

Summary

  • William Blair Investment Management, LLC has filed an Amendment No. 1 to Schedule 13G, disclosing its beneficial ownership in GeneDx Holdings Corp.
  • The filing indicates that William Blair Investment Management, LLC beneficially owns 1,235,681 shares of GeneDx Holdings Corp. Common Stock.
  • This ownership represents 4.3% of the class of securities.
  • William Blair Investment Management, LLC holds sole voting power over 1,119,691 shares and sole dispositive power over 1,235,681 shares.
  • The securities were acquired and are held in the ordinary course of business, not for the purpose of changing or influencing control of the issuer.

Sentiment

Score: 6

Explanation: The filing indicates a passive institutional investment, which is generally a neutral to slightly positive signal, showing continued interest from a reputable investment adviser.

Positives

  • Increased institutional ownership by William Blair Investment Management, LLC, a reputable investment adviser, may signal confidence in GeneDx Holdings Corp.

Negatives

  • NA

Risks

  • NA

Future Outlook

NA

Industry Context

This filing indicates that a significant investment adviser, William Blair Investment Management, LLC, maintains a passive stake in GeneDx Holdings Corp. Such disclosures are common in the investment industry, reflecting portfolio adjustments or ongoing investment strategies by institutional players in publicly traded companies.

Stakeholder Impact

  • Shareholders may view the institutional ownership by William Blair Investment Management, LLC as a positive indicator of the company's investment appeal.

Key Dates

DateDescription
09/30/2025Date of event which requires filing of this statement (as reported in the filing)
11/12/2025Date of signature for the Schedule 13G filing

Keywords

GeneDx Holdings Corp., William Blair Investment Management, Beneficial Ownership, Schedule 13G, Common Stock, Institutional Investment, SEC Filing

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