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.

STURM, RUGER & COMPANY, INC.

RGR · Industrials · Shallow moat

Shallow moat

Doesn't clear the bar

Primoris Services Corporation

PRIM · Industrials · Shallow moat

Shallow moat

Doesn't clear the bar

Taylor Devices, Inc.

TAYD · Industrials · Shallow moat

Shallow moat

Doesn't clear the bar

FLOWSERVE CORP

FLS · Industrials · Shallow moat

Shallow moat

Doesn't clear the bar

Measure	RGR	PRIM	TAYD	FLS
Moat Score (0–100)	50	51 (highest)	51 (highest)	49
Pricing power	27	27	26	51 (highest)
Returns on capital	93 (highest)	54	48	35
Balance-sheet safety	28	100 (highest)	100 (highest)	40
Capital discipline	40	34	43	77 (highest)
Margin of safety	Around fair value (highest margin of safety)	88% above value	103% above value	138% above value
Market cap	$603.5M	$4.6B	$229.4M	$8.7B
Moat tier	Shallow moat	Shallow moat	Shallow moat	Shallow moat
Filings as of	FY2025	FY2025	FY2025	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.