SCHEDULE: Ameriprise Financial Discloses Quanterix Stake

Ameriprise Financial, Inc. has filed a Schedule 13G, reporting beneficial ownership of 7.5% of Quanterix Corp. common stock as of March 31, 2026.

Summary

• Ameriprise Financial, Inc. (AFI) has filed an amendment to its Schedule 13G, indicating its beneficial ownership of Quanterix Corp. common stock.
• As of March 31, 2026, AFI beneficially owns 3,542,374 shares of Quanterix Corp. common stock.
• This holding represents 7.5% of the total class of securities.
• AFI has shared voting power and shared dispositive power over these shares.
• The filing states that AFI disclaims beneficial ownership of any shares reported on this Schedule.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing. It's a routine disclosure of an existing ownership stake, with the key nuance being the disclaimer of beneficial ownership, which requires further investigation into the nature of the holding.

Positives

• Ameriprise Financial, Inc. has disclosed its significant stake in Quanterix Corp., providing transparency to the market.
• The filing confirms a substantial holding of 7.5% of Quanterix Corp. common stock, indicating investor confidence.

Negatives

• The filing explicitly states that Ameriprise Financial, Inc. disclaims beneficial ownership of the reported shares, which could imply a custodial or administrative role rather than direct investment control.

Risks

• The disclaimer of beneficial ownership by Ameriprise Financial, Inc. may create uncertainty regarding the ultimate control or investment strategy behind the reported shares.
• Potential for future changes in beneficial ownership or voting power, as this is a routine filing that can be amended.

Future Outlook

This filing is a disclosure of current ownership and does not contain forward-looking statements or guidance regarding future performance of Quanterix Corp. or Ameriprise Financial, Inc.

Management Comments

• Ameriprise Financial, Inc. certifies that the securities were acquired and are held in the ordinary course of business and were not acquired or held for the purpose of or with the effect of changing or influencing the control of the issuer.

Industry Context

StockSavvy.ai notes that Schedule 13G filings are standard disclosures for institutional investors crossing certain ownership thresholds. This filing indicates Ameriprise Financial's significant position in Quanterix Corp., a company operating in the life science tools and diagnostics sector, which has seen considerable investor interest.

Stakeholder Impact

• Shareholders of Quanterix Corp. gain transparency regarding a significant institutional investor's stake.
• Investors in Ameriprise Financial, Inc. are informed about the company's investment activities and holdings.

Next Steps

• Ameriprise Financial, Inc. will continue to monitor its holdings in Quanterix Corp. and may file amendments to this Schedule 13G if ownership levels change significantly.

Key Dates

Keywords

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