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🇺🇸 Nasdaq 100 Email Security

Weekly audit of email security across 101 companies in the Nasdaq 100.

Nasdaq · 101 companies analysed · Scan week: 2026-03-23

  • Companies listed in the Nasdaq 100 score an average of 50/100 for email security this week.
  • 0% of Nasdaq 100 companies achieve a grade of A+ or A in email authentication, while 43% receive a D or F.
  • The average score of 50 is 8 points above the global average of 42, indicating stronger-than-average email security practices.
  • 97% of Nasdaq 100 companies have deployed DMARC email authentication, and 66.3% enforce a strict reject policy to block spoofed emails.
  • SPF record deployment stands at 96%, authorizing legitimate sending servers and helping prevent email spoofing.
  • 23% of companies have configured BIMI to display their verified brand logo in supported email clients.
  • 2% enforce TLS encryption for inbound email delivery via MTA-STS, protecting against downgrade attacks.
  • DNSSEC is enabled on 18.8% of Nasdaq 100 domains, adding cryptographic validation to DNS queries.
  • CrowdStrike leads the Nasdaq 100 with a top score of 79/100 (B).
  • Constellation Energy has the lowest score at 0/100, indicating significant gaps in email security configuration.
  • Scores range from 0 to 79 with a median of 52, reflecting varied levels of email security maturity across the index.

Average score

50/ 100

DMARC reject

66.3%

BIMI configured

23%

MTA-STS enforce

2%

DNSSEC enabled

18.8%

0
A+
0
A
8
B
50
C
38
D
5
F

50

Average

52

Median

0

Min

79

Max

Company

Grade
1CrowdStrikecrowdstrike.com79B
2Thomson Reuters Corporationthomsonreuters.com73B
3Palo Alto Networkspaloaltonetworks.com73B
4PayPalpaypal.com72B
5DoorDashdoordash.com71B
6Cadence Design Systemscadence.com70B
7Broadcombroadcom.com70B
8Cintascintas.com70B
9Kraft Heinzkraftheinzcompany.com69C
10Applied Materialsappliedmaterials.com68C
11Amgenamgen.com67C
12ASML Holdingasml.com67C
13Baker Hughesbakerhughes.com67C
14Microsoftmicrosoft.com66C
15Gilead Sciencesgilead.com66C
16Autodeskautodesk.com64C
17MicroStrategy Incorporatedmicrostrategy.com64+1C
18Starbucksstarbucks.com59C
19Airbnbairbnb.com59C
20American Electric Poweraep.com58C
21Automatic Data Processingadp.com58C
22Regeneron Pharmaceuticalsregeneron.com58C
23Netflixnetflix.com58C
24Costcocostco.com58C
25Diamondback Energydiamondbackenergy.com58C
26Shopifyshopify.com57C
27Workday, Inc.workday.com56C
28O’Reilly Automotiveoreillyauto.com56C
29Take-Two Interactivetake2games.com56C
30Old Dominionodfl.com56+3C
31Paccarpaccar.com55C
32Axon Enterpriseaxon.com55C
33Microchip Technologymicrochip.com55C
34Ciscocisco.com55C
35Texas Instrumentsti.com55C
36Analog Devicesanalog.com55C
37Zscaler Inc.zscaler.com55C
38Verisk Analyticsverisk.com55C
39Qualcommqualcomm.com55C
40Seagate Technologyseagate.com55C
41Intuitive Surgicalintuitive.com54C
42Honeywellhoneywell.com54C
43KLA Corporationkla.com54C
44Monster Beveragemonsterbevcorp.com53C
45Comcastcomcastcorporation.com53C
46Synopsyssynopsys.com52C
47Apple Inc.apple.com52C
48Cognizantcognizant.com52C
49Dexcomdexcom.com52C
50Linde plclinde.com52C
51Micron Technologymicron.com52C
52PepsiCopepsico.com52C
53Roper Technologiesropertech.com52C
54Fortinetfortinet.com51C
55Nvidianvidia.com51C
56Xcel Energyxcelenergy.com51C
57Marvell Technology Inc.marvell.com51C
58GE HealthCaregehealthcare.com50C
59Insmed Incorporatedinsmed.com49D
60Warner Bros. Discoverywbd.com49D
61Palantir Technologiespalantir.com49D
62Ferrovial SEferrovial.com49D
63Vertex Pharmaceuticalsvrtx.com48D
64Fastenalfastenal.com47D
65Atlassian Corporationatlassian.com47D
66MercadoLibre Inc.mercadolibre.com47D
67Adobe Inc.adobe.com47D
68NXP Semiconductorsnxp.com46D
69CSX Corporationcsx.com46D
70Arm Holdings plcarm.com46D
71Electronic Artsea.com46D
72Idexx Laboratoriesidexx.com44D
73Paychexpaychex.com44D
74Intuitintuit.com44D
75Walmartwalmart.com44D
76Datadogdatadoghq.com43D
77AppLovinapplovin.com43D
78Advanced Micro Devicesamd.com43D
79Booking Holdingsbookingholdings.com43D
80Alphabet Inc. (Class A)abc.xyz42D
81Alphabet Inc. (Class C)abc.xyz42D
82Western Digitalwesterndigital.com41D
83Mondelez Internationalmondelezinternational.com41D
84T-Mobile USt-mobile.com41D
85Intelintel.com41D
86CoStar Groupcostargroup.com40D
87Tesla, Inc.tesla.com39D
88Lam Researchlamresearch.com39D
89Marriott Internationalmarriott.com39D
90Alnylam Pharmaceuticalsalnylam.com38D
91PDD Holdings Inc.pddholdings.com38D
92Copartcopart.com36D
93Amazonamazon.com35D
94Exelonexeloncorp.com32D
95Meta Platformsmeta.com32-14D
96Keurig Dr Pepperkeurigdrpepper.com30D
97Ross Storesrossstores.com26F
98Charter Communicationscorporate.charter.com15F
99Coca-Cola Europacific Partners PLCcocacolaep.com8F
100Monolithic Power Systemsmonolithicpowersystems.com0F
101Constellation Energyconstellationenergy.com0F

Understanding index-level analysis

A stock index groups the largest companies in a market. Analyzing their email security provides a representative snapshot of how a country's or region's corporate sector protects against email-based threats.

What this page shows:

  • Average score - The mean email security score across all constituent companies
  • Grade distribution - How many companies fall into each grade bracket (A+ through F)
  • Company table - Individual scores, grades and key indicator status for each company
  • Sector breakdown - How different industries within the index compare

Key standards tracked

Each company is evaluated on:

  1. SPF - Is the sending policy properly configured? Does it use -all (hard fail)?
  2. DKIM - Are signing keys published and strong enough (2048-bit minimum)?
  3. DMARC - Is a policy in place? Is it set to quarantine or reject?
  4. BIMI - Is the brand logo published for inbox display?
  5. MTA-STS - Is inbound email transport encryption enforced?
  6. DNSSEC - Is the DNS zone signed to prevent spoofing?

FAQ - Frequently asked questions

Q: How are companies scored?

A: Each domain is analyzed for email authentication standards and awarded up to 100 points across three pillars.


Q: What does the grade distribution show?

A: The spread of scores from A+ to F, indicating overall index maturity.


Q: Can I compare indices?

A: Yes, via the Statistics page.


PagePurpose
Observatory DashboardOverall overview with key metrics
StatisticsCross-index and cross-sector comparison
Email Domain CheckAudit your own domain
Nasdaq 100 - Email Security Scores