ARQArq, Inc. Common Stock

CSNasdaq (XNAS)·USD

Identity

Security key: 11908
Ticker: ARQ
Type: CS — Common Stock
Exchange: Nasdaq(XNAS)
Venue group: NASDAQ
Operating MIC: XNAS
Market: stocks
Locale: us
Currency: USD
Listed: 2003-10-22
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: ARQ

Detail

Enriched 2026-08-14 20:47

Market cap: $100,437,510.9
Shares outstanding (class): 42,926,258
Shares outstanding (weighted): 43,668,483
SIC: 2890 MISCELLANEOUS CHEMICAL PRODUCTS
Employees: 202
Location: GREENWOOD VILLAGE, CO
Homepage: https://www.arq.com
Description: Arq Inc is an environmental technology company principally engaged in the sale of consumable air, water, and soil treatment solutions, including activated carbon (AC) and chemical technologies. The company manufactures and sells activated carbon and other chemicals used to capture and remove contaminants for the coal-fired power generation, industrial, municipal water and air, water and soil treatment, and remediation markets. Some of the products in its portfolio are Powdered Activated Carbon, Granular Activated Carbon, and Colloidal Carbon Product, among others.

Market cap and share counts drift.

Funds holding this security

56 funds · 56 positions · $10.39M 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	$2.71M	0.00%	1,056,800 NS	FIGI
Royce Small-Cap Opportunity Fund ROYCE FUND	—	$2.30M	0.20%	900,007 NS	FIGI
iShares Russell 2000 ETF iShares Trust	IWM	$2.06M	0.00%	804,156 NS	FIGI
VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS	VXF	$872.6K	0.00%	340,866 NS	FIGI
iShares Russell 2000 Value ETF iShares Trust	IWN	$726.1K	0.01%	283,650 NS	FIGI
iShares Micro-Cap ETF iShares Trust	IWC	$210.9K	0.02%	82,396 NS	FIGI
Ultra-Small Company Market Fund Bridgeway Funds, Inc.	—	$176.1K	0.14%	68,779 NS	FIGI
Master Small Cap Index Series Quantitative Master Series LLC	—	$129.9K	0.00%	50,743 NS	FIGI
SMALL CAP EQUITY FUND GuideStone Funds	—	$111.1K	0.01%	43,400 NS	FIGI
Fidelity Small Cap Value Index Fund Fidelity Salem Street Trust	—	$100.6K	0.01%	39,316 NS	FIGI
NVIT Small Cap Value Fund Nationwide Variable Insurance Trust	—	$92.7K	0.05%	36,211 NS	FIGI
EQ/2000 Managed Volatility Portfolio EQ Advisors Trust	—	$86.5K	0.00%	33,798 NS	FIGI
NVIT Multi-Manager Small Company Fund Nationwide Variable Insurance Trust	—	$82.0K	0.02%	32,028 NS	FIGI
Venerable US Small Cap Fund Venerable Variable Insurance Trust	—	$78.2K	0.06%	30,543 NS	FIGI
The Gabelli Small Cap Growth Fund Gabelli Equity Series Funds Inc	—	$76.8K	0.00%	30,000 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

TICKERARQ
FIGI_COMPOSITEBBG000JFNL85
FIGI_SHARE_CLASSBBG001S7XN59
CIK0001515156
ISINUS00770C1018
Resolved through OpenFIGI from a holdings ISIN, not supplied by the securities vendor.

Identifiers

Classification

classification.v_security_classification

Asset class: Equity
Sector: Materials
Industry: Chemicals
Source: LLMunreviewed
Self-reported confidence: 0.95
Model: deepseek
Rationale: SIC 2890 indicates miscellaneous chemical products, placing it in the Materials sector and Chemicals industry.

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.