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The highest GAAP operating margin

GAAP operating margin

Ranked from the filings of the companies this site has read, under Quality. 50 of them report a figure for this; the rest are absent rather than ranked last, because a filing that does not carry a number is not a company that scores badly on it.

#CompanyOper. margin
1 ZCCM INVESTMENTS HOLDINGS PLC MLZAM.PA 880.32%
2 WEBSTER FINANCIAL CORPORATION WBS 594.03%
3 THE LAW DEBENTURE CORPORATION P.L.C. 1R4.F 281.65%
4 ARRAY DIGITAL INFRASTRUCTURE, INC. AD 241.34%
5 ARRAY DIGITAL INFRASTRUCTURE, INC. UZD 241.34%
6 ARRAY DIGITAL INFRASTRUCTURE, INC. UZE 241.34%
7 ARRAY DIGITAL INFRASTRUCTURE, INC. UZF 241.34%
8 SHAFTESBURY CAPITAL PLC SHC.L 186.61%
9 HARMONY BIOSCIENCES HOLDINGS, INC. HRMY 185.20%
10 CTP N.V. CTP2.DE 173.54%
11 AMERICA MOVIL SAB DE CV/ AMX 141.41%
12 Allegiant Travel Co ALGT 127.92%
13 CMB.TECH NV CMBT 106.62%
14 CMB.TECH CMBT.BR 106.62%
15 FOREIGN TRADE BANK OF LATIN AMERICA, INC. BLX 100.00%
16 LONDONMETRIC PROPERTY PLC LMP.L 97.37%
17 CORMEDIX INC. CRMD 94.63%
18 CPI Europe AG AT0000A3A972.VI 94.19%
19 Eurocommercial Properties N.V. ECMPA.AS 92.91%
20 EuroTeleSites AG ETS.VI 86.54%
21 Millrose Properties, Inc. MRP 85.11%
22 CASEY'S GENERAL STORES, INC. CASY 83.84%
23 The Chemours Company CC 83.01%
24 ARBUTUS BIOPHARMA CORP ABUS 81.99%
25 PHILOGEN S.P.A. PHIL.MI 81.88%
26 Gubra A/S GUBRA.CO 81.54%
27 HIVE DIGITAL TECHNOLOGIES LTD. HIVE 79.60%
28 Wing Yip Food Holdings Group Limited WYHG 78.59%
29 LexinFintech Holdings Ltd. LX 78.13%
30 AppLovin Corporation APP 77.44%
31 MERLIN PROPERTIES SOCIMI, S.A. MRL.MC 75.93%
32 S IMMO AG BRI.MI 75.61%
33 ZEALAND PHARMA A/S ZEAL.CO 75.52%
34 Texas Pacific Land Corporation TPL 74.92%
35 FRANCO NEVADA Corp FNV 74.29%
36 MGIC Investment Corp MTG 73.98%
37 FREY FREY.PA 73.31%
38 REGENCY CENTERS CORPORATION REG 72.32%
39 Saniona AB SANION.ST 72.28%
40 OR ROYALTIES INC. OR 70.94%
41 NEOEN NEOEN01-PRO.OL 69.47%
42 NMI Holdings, Inc. NMIH 69.34%
43 Enact Holdings, Inc. ACT 69.11%
44 WHEATON PRECIOUS METALS CORP. WPM 68.33%
45 ARES REAL ESTATE INCOME TRUST INC. ZARE 68.32%
46 COUSINS PROPERTIES INC CUZ 68.00%
47 SAFESTORE HOLDINGS PLC SAFE.L 67.99%
48 Enlight Renewable Energy Ltd. ENLT 67.99%
49 VERISIGN INC/CA VRSN 67.86%
50 RIGHTMOVE PLC RMV.L 67.71%

How this measure is worked out

Operating income ÷ revenue × 100

Operating income (also called EBIT) is what is left of sales after the cost of the product and the cost of running the company, before interest and tax. Revenue is total sales to customers before any cost is taken off. Both over the trailing twelve months.

50% earns a 10; set margin_scale per ticker for sectors that cannot reach it

More about Oper. margin, and the XBRL tags behind it

What this ranking is not

It is not advice, and a high place is not a recommendation. A company can lead on one measure and fail on every other; that is the reason this site scores five dimensions rather than one and lets you weigh them yourself.

It also ranks only what has been read. A company whose filings are not in this database cannot appear here however well it would have done, and a company whose filing does not tag this figure is absent rather than last.

Worked out on 2026-09-27.

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