Arq Inc (ARQ)

NASD · Industrials · Pollution & Treatment Controls · USA

Arq Inc is a micro cap company (market value under $300 million) in the Pollution & Treatment Controls industry.

Arq manufactures and sells activated carbon-based solutions for treating air, water, and soil contaminants including mercury and PFAS. The company serves coal-fired power plants, industrial facilities, and water treatment customers through its consumable products division. Arq owns a lignite coal mine providing raw materials for production in the advanced purification technologies market.

From its FY2025 annual report (Form 10-K)

Intrinsic value, DCF valuation, financial health and value investing analysis for the Arq Inc stock.

Our verdict on ARQ

Undervalued: intrinsic value $2.25 per share, market price $1.77, margin of safety 21.4% (as of 2026-10-30).

A 0.8x revenue multiple, discounted for its losses, values the shares at $2.25; the price of $1.77 is 21% below that value.

Leak Score: 50/100 on 9 of 12 signals (Weak Signal).

ETFs with the most weight in ARQ

12 more funds hold it; the full list is part of the paid plan.

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Peers in Pollution & Treatment Controls

All 16 Pollution & Treatment Controls stocks

Is ARQ undervalued or overvalued?

ARQ is undervalued (as of the 2026-10-30 close). A 0.8x revenue multiple, discounted for its losses, values the shares at $2.25; the price of $1.77 is 21% below that value.

What is the intrinsic value of ARQ?

$2.25 per share (as of the 2026-10-30 close), against a market price of $1.77. That is a margin of safety of 21.4%. The value is the average of the valuation methods that apply to this company, recomputed every night after the US close.

What is Arq Inc's Leak Score?

50 out of 100, which we rate "Weak Signal", on 9 of 12 value investing signals.