How many institutions held QTRX - Quanterix Corp - Common Stock, $0.001 par value per share in Q2 2023?

136 institutional investors reported QTRX - Quanterix Corp - Common Stock, $0.001 par value per share for Q2 2023. Use the holders table for investor-level position and value details.

Quanterix Corp - Common Stock, $0.001 par value per share (QTRX)

Q: What does CUSIP 74766Q101 represent in this 13F holders report?

CUSIP 74766Q101 is the security identifier for QTRX - Quanterix Corp - Common Stock, $0.001 par value per share used to aggregate holder disclosures.

CUSIP: 74766Q101

Q2 2023 13F Holders as of 30 Jun 2023

Security type / class: Equity / Common Stock, $0.001 par value per share
Total 13F shares: 32,508,081
Total 13F value: $733,059,314
Share change: -344,704
Put/Call ratio: 197%
SEC-reported price per share: $22.55
Number of holders: 136
Value change: +$7,550,645
Number of buys: 64
Number of sells: 68
Shares outstanding: 47,133,168

Security key

74766Q101

Report period

Q2 2023

Institutions

136

Top holders

QTRX full security history Ownership snapshot Full 13F holder table Newer quarter: Q3 2023 Previous quarter: Q1 2023 Quanterix Corp SEC filings Quanterix Corp company facts Quanterix Corp 13D/G history

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Reporting periods

Holder history for CUSIP 74766Q101

Newer quarter: Q3 2023 Previous quarter: Q1 2023

Recent filing periods:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Ownership snapshot

Top reported holders of QTRX - Quanterix Corp - Common Stock, $0.001 par value per share (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader

Camber Capital Management LP

Disclosed value leader

Camber Capital Management LP

Comparable rows

15/15

Latest evidence

31 Mar 2023

13F Lead comparable stake: 7.3% Showing 1-6 of 15 holder rows.

Quick read

Camber Capital Management LP leads the comparable SEC ownership view at 7.3%.

15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Camber Capital Management LP's linked filing trail.

Comparable ownership Top 5

Camber Capital Management LP 7.3%

BlackRock Finance, Inc. 5.7%

PURA VIDA INVESTMENTS, LLC 5%

VANGUARD GROUP INC 3.9%

MILLENNIUM MANAGEMENT LLC 3%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows

Holder	Evidence	Ownership %	Position	12M Net Δ	As of
Camber Capital Management LP	13F Company 13F	7.3%	$38,600,000 3,425,000 shares	—	31 Mar 2023
BlackRock Finance, Inc.	13F Company 13F	5.7%	$30,504,915 2,706,736 shares	—	31 Mar 2023
PURA VIDA INVESTMENTS, LLC	13F Company 13F	5%	$26,623,189 2,362,306 shares	—	31 Mar 2023
VANGUARD GROUP INC	13F Company 13F	3.9%	$20,913,412 1,855,671 shares	—	31 Mar 2023
MILLENNIUM MANAGEMENT LLC	13F Company 13F	3%	$15,957,000 1,415,841 shares	—	31 Mar 2023
Granahan Investment Management, LLC	13F Company 13F	2.8%	$14,628,753 1,298,026 shares	—	31 Mar 2023

How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q2 2023

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions

136

32,508,081

Rows available

136

Investor	Option	Weight %	Change %	SEC-reported value	* Price	Shares	Share Change	Activity	Report Period

^* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q2 2023 vs Q1 2023 Across Filers

Q1 2023 holders

134

Q2 2023 holders

136

Holder diff

Investor	Q1 2023 Shares	Q2 2023 Shares	Share Diff	Share Chg %	Q1 2023 value	Q2 2023 value	Value change	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend