runsonwhat

Citadel Securities's tech stack

What does Citadel Securities use?

Citadel Securities (citadelsecurities.com) uses at least 14 tools we can see from public records, including Microsoft 365 for email and documents, Cloudflare for content delivery, SendGrid for email delivery and Proofpoint for security. Last checked .

Industry
Financial Services
Size
1,001–5,000 employees
Based in
Miami, United States
Founded
2001
LinkedIn
Company page
Re-check liveVisit citadelsecurities.com
Tools found
14
Categories
10
Layers
4 of 5
Last checked
Oct 2026

Citadel Securities's stack, layer by layer

Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.

Edge & Hosting

2 tools, where the bytes are served from

CDN & Edge

DNS

Application

1 tool, what the product is built with

AI

Go-to-market

1 tool, how they find and keep customers

Marketing

Company Ops

10 tools, what the team runs on day to day

Email Delivery

Workspace

Collaboration

Dev Tools

Finance & Legal

Security & Compliance

Companies like Citadel Securities also use

Tools common among companies with a similar stack that we haven't found at Citadel Securities.

Companies with a stack like Citadel Securities's

Ranked by shared tools, with rare tools counting more.

More Financial Services companies

Other Financial Services companies we've checked.

Citadel Securities tech stack FAQ

What tools does Citadel Securities use?

We've found 14 tools at Citadel Securities (citadelsecurities.com). Edge & Hosting: Cloudflare and Amazon Route 53. Application: Anthropic. Company Ops: Microsoft 365, SendGrid and Atlassian. Last checked October 3, 2026.

What email provider does Citadel Securities use?

Citadel Securities uses Microsoft 365 for email and documents. We found Microsoft 365 through DNS verification records and email records.

Does Citadel Securities use Microsoft 365?

Yes. We found Microsoft 365 at Citadel Securities through DNS verification records and email records. Microsoft 365 is used by 245,233 companies we track.

How does runsonwhat know what Citadel Securities uses?

We read public traces only: Citadel Securities's DNS and email records, certificate logs, the code its website loads, and published subprocessor lists. A tool is listed only when a direct record backs it up. DNS is rechecked weekly and the website monthly.

We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.