SCHEDULE: Ameriprise Financial Discloses Quanterix Stake

Ameriprise Financial, Inc. has filed a Schedule 13G, reporting beneficial ownership of 990,224 shares of Quanterix Corp. common stock, representing 2.1% of the class.

Summary

• Ameriprise Financial, Inc. (AFI) has filed an amendment to its Schedule 13G, indicating its beneficial ownership of Quanterix Corp. common stock.
• As of April 30, 2026, AFI beneficially owns 990,224 shares of Quanterix Corp. common stock.
• This holding represents 2.1% of the total class of securities.
• AFI has shared voting and dispositive power for these shares.
• The filing is made under Rule 13d-1(b) of the Securities Exchange Act of 1934, classifying AFI as an investment adviser.
• AFI disclaims beneficial ownership of any shares reported on this Schedule, suggesting these holdings are managed on behalf of clients.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, as it is a routine disclosure of beneficial ownership without specific performance or strategic commentary on Quanterix Corp.

Positives

• Ameriprise Financial, Inc. has disclosed its holdings, providing transparency to the market regarding its investment in Quanterix Corp.

Negatives

• The filing does not contain specific financial performance data for Quanterix Corp., making it difficult to assess the underlying value of the investment.
• Ameriprise Financial, Inc. disclaims beneficial ownership, indicating the shares are held on behalf of others, which may imply a fiduciary rather than direct strategic interest.

Risks

• The filing does not explicitly detail risks associated with Quanterix Corp.'s business or the investment itself.

Future Outlook

The filing is a disclosure of current ownership and does not contain forward-looking statements or guidance regarding Quanterix Corp.'s future performance.

Management Comments

• "AFI disclaims beneficial ownership of any shares reported on this Schedule."
• "By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11."

Industry Context

StockSavvy.ai notes that Schedule 13G filings are common for institutional investors and investment advisers to report passive stakes in public companies. This filing indicates Ameriprise Financial, Inc.'s role as a significant, albeit passive, holder in Quanterix Corp., a company operating in the biotechnology or diagnostics sector, subject to market dynamics and regulatory oversight.

Stakeholder Impact

• Shareholders of Quanterix Corp. are informed of a significant institutional investor's holdings, which can influence market perception and trading activity.
• The disclosure provides transparency for other investors and market participants regarding the ownership structure of Quanterix Corp.

Next Steps

• Ameriprise Financial, Inc. will continue to hold its position in Quanterix Corp. as disclosed, subject to its investment strategies and client mandates.

Key Dates

Keywords

Schedule 13G, Ameriprise Financial, Quanterix Corp, Beneficial Ownership, Common Stock, Investment Adviser, SEC Filing