The Moat Index

Compare moats, side by side.

Two to four companies, scored on the same four filters from their SEC filings — so the comparison is apples to apples. The method is fully public.

Warrior Met Coal, Inc.

HCC · Materials · Shallow moat

Shallow moat

Doesn't clear the bar

AMPLIFY ENERGY CORP.

AMPY · Materials · Shallow moat

Shallow moat

On the watchlist

ADVANCED DRAINAGE SYSTEMS, INC.

WMS · Materials · Shallow moat

Shallow moat

Doesn't clear the bar

INNOSPEC INC.

IOSP · Materials · Shallow moat

Shallow moat

Doesn't clear the bar

Measure	HCC	AMPY	WMS	IOSP
Moat Score (0–100)	59	60 (highest)	59	59
Pricing power	48	100 (highest)	31	46
Returns on capital	92 (highest)	16	75	52
Balance-sheet safety	62	100 (highest)	77	100 (highest)
Capital discipline	23	24	60 (highest)	46
Margin of safety	49% above value	67% below value (highest margin of safety)	32% above value	Around fair value
Market cap	$4.1B	$160.4M	$10.7B	$2.1B
Moat tier	Shallow moat	Shallow moat	Shallow moat	Shallow moat
Filings as of	FY2025	FY2025	FY2026	FY2025

Scores reflect business quality, not buy/sell signals. Educational only — not investment advice, and not a recommendation on any company shown. See the methodology and disclaimer.