QTRXQuanterix Corporation Common Stock

CSNasdaq (XNAS)·USD

Identity

Security key: 20719
Ticker: QTRX
Type: CS — Common Stock
Exchange: Nasdaq(XNAS)
Venue group: NASDAQ
Operating MIC: XNAS
Market: stocks
Locale: us
Currency: USD
Listed: 2017-12-07
Round lot: 100
Active: Yes
Last seen in a load: 2026-08-14 20:49
Vendor updated: 2026-08-13 06:09
Ticker root / suffix: QTRX

Detail

Enriched 2026-08-14 20:47

Market cap: $138,568,680.45
Shares outstanding (class): 47,105,981
Shares outstanding (weighted): 47,293,065
SIC: 3826 LABORATORY ANALYTICAL INSTRUMENTS
Employees: 450
Location: BILLERICA, MA
Homepage: https://www.quanterix.com
Description: Quanterix Corp is a life sciences company accelerating biomarker breakthroughs from discovery to diagnostics using ultra-sensitive translational research and spatial biology instruments, consumables, and services. The company sells proprietary instruments and related consumables to research laboratories, contract research organizations (CROs), academic institutions, and bio-pharmaceutical companies, and provides contract research services and clinical laboratory testing services, including four Laboratory Developed Tests (LDTs), through its Accelerator Laboratory. Its products include Simoa, Assay Kits, LDTs & Assay Services, Simoa p-Tau 217, Simoa NfL LDT, Simoa p-Tau 181 LDT, and SP-X Imaging and Analysis System. Geographically, it operates in North America, EMEA, and the Asia Pacific.

Market cap and share counts drift.

Funds holding this security

71 funds · 71 positions · $18.62M reported value, as of 2026-03-31

All holders →

Fund	Ticker	Position value	% of fund	Balance	Match
VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS	VTI	$4.42M	0.00%	1,254,850 NS	FIGI
iShares Russell 2000 ETF iShares Trust	IWM	$3.64M	0.01%	1,033,007 NS	FIGI
William Blair Small Cap Growth Fund WILLIAM BLAIR FUNDS	—	$2.53M	0.26%	719,776 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$1.70M	0.00%	484,115 NS	FIGI
iShares Russell 2000 Value ETF iShares Trust	IWN	$1.10M	0.01%	311,865 NS	FIGI
iShares Biotechnology ETF iShares Trust	IBB	$1.00M	0.01%	284,827 NS	FIGI
Fidelity Enhanced Small Cap ETF Fidelity Covington Trust	FESM	$633.9K	0.02%	180,096 NS	FIGI
Columbia Variable Portfolio - Small Cap Value F… COLUMBIA FUNDS VARIABLE INSURANCE TRUST	—	$575.3K	0.14%	163,435 NS	FIGI
iShares Micro-Cap ETF iShares Trust	IWC	$369.8K	0.03%	105,071 NS	FIGI
VANGUARD STRATEGIC SMALL-CAP EQUITY FUND VANGUARD HORIZON FUNDS	—	$319.2K	0.01%	90,688 NS	FIGI
Master Small Cap Index Series Quantitative Master Series LLC	—	$266.9K	0.01%	75,825 NS	FIGI
Ultra-Small Company Market Fund Bridgeway Funds, Inc.	—	$240.2K	0.20%	68,226 NS	FIGI
EQ/2000 Managed Volatility Portfolio EQ Advisors Trust	—	$175.4K	0.01%	49,817 NS	FIGI
iShares Core S&P Total U.S. Stock Market ETF iShares Trust	ITOT	$172.5K	0.00%	49,001 NS	FIGI
Fidelity Small Cap Value Index Fund Fidelity Salem Street Trust	—	$165.2K	0.01%	46,919 NS	FIGI

How positions resolve to the securities master. FIGI_COMPOSITE is exact identifier equality — both sides got the FIGI from Bloomberg. TICKER is a narrow fallback used only where the master row carries no FIGI at all (2,389 rows do not, disproportionately Irish-domiciled US listings like LIN and ACN). Roughly 22% of all positions resolve to the master.

Funds holding this security

Identifiers

master.security_identifier

TICKERQTRX
FIGI_COMPOSITEBBG0027NWC69
FIGI_SHARE_CLASSBBG0027NWC78
CIK0001503274
ISINUS74766Q1013
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Health Care
Industry: Life Sciences Tools
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: Quanterix is a life sciences tools company providing analytical instruments for biomarker detection, fitting the HEALTHCARE/LIFE_SCIENCE_TOOLS classification.

Classifications are unreviewed model output. All 5,771 assignments carry source = LLM and is_reviewed = false. Confidence is the model’s own estimate and is not calibrated — it clustered at 0.90–0.98 across the whole first pass, including rows that later proved wrong. Use it to order a review queue, not as a probability. Two share classes of one issuer can disagree.

Classification

Fund data

Not linked to a fund series.

Either this is not a fund, or it is one the SEC share-class snapshot cannot reach — commodity trusts and notes have no series ID at all.