# Cloud9 (part of Symphony)

> Cloud9, now part of Symphony, sells cloud-based trader voice software to banks, brokers, asset managers and other market participants. It replaces much of the fixed turret and private-wire infrastructure with software, a counterparty directory, recording and voice analytics. Symphony says the Cloud9 network spans 13.9k users at more than 900 firms.

- **Founded:** 2014
- **Headquarters:** New York, United States
- **Founders:** Gerald Starr (Co-founder and CEO), Leo Papadopoulos (Co-founder and CTO), Stephen J. Kammerer (Co-founder and COO / Chief Product Officer)
- **Products:** Cloud9 Trader Voice, Cloud9 Gateway Service, Cloud9 Directory, Trader Voice Analytics, Cloud9 Mobile
- **Notable:** Chosen as a 2016 FIA Innovators Pavilion finalist., A 2018 company release reported more than 5,000 institutional users and millions of voice trader communications per day., Acquired by Symphony in June 2021.

## Products & services

- **Cloud9 Trader Voice** — Cloud-native turret replacement with ringdowns, hoots, broadcasts, intercom, recording and external counterparty connectivity.
- **Cloud9 Gateway Service** — Connects users to counterparties who have not adopted the Cloud9 application.
- **Cloud9 Directory** — Searchable peer-to-peer directory for finding and connecting with market counterparties.
- **Trader Voice Analytics** — Transcription, conversation summaries, deal metadata and dashboards for voice-driven trading and compliance insight.
- **Cloud9 Mobile** — Mobile trader voice experience with activity, call history and off-desk engagement modes.
- **CloudHub and optional hardware** — Optional speakers, microphones and button boards for tactile trading workflows.

## Achievements

- Chosen as a 2016 FIA Innovators Pavilion finalist.
- A 2018 company release reported more than 5,000 institutional users and millions of voice trader communications per day.
- Acquired by Symphony in June 2021.
- Won a 2025 Best Sell-Side Communication award noted by Symphony.
- Symphony’s product page reports about 13.9k users at more than 900 firms.

## Latest updates

- **2026-07** — Cloud9 co-founder Leo Papadopoulos published a retrospective on its cloud architecture, directory, audio and resilience choices.
- **2026-05** — Symphony demonstrated a Cloud9 voice reconciliation dashboard and tablet interface at Innovate 2026.
- **2025-05** — Symphony unveiled Cloud9 Mobile, a revised directory and AI-powered Trader Voice Analytics at Innovate London.
- **2023-11** — Symphony announced Google Cloud Vertex AI work to improve Cloud9 transcription and voice analytics.

## Links

- Website: https://symphony.com/voice/cloud9/
- LinkedIn: https://www.linkedin.com/company/cloud9-technologies-llc
- Twitter/X: https://twitter.com/c9tec
- YouTube: https://www.youtube.com/@SymphonyComm
- Facebook: https://www.facebook.com/c9tec

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Published by YesPress — https://yespress.io
Last updated: 2026-09-29