DiamondStream Partners

DiamondStream Partners invests in travel transformation through thematic funds, focusing on travel and aviation-related companies with strong growth potential. Led by seasoned aviation experts who co-founded Volaris, they apply a unique vertical industry approach informed by industry demand drivers.

William Donovan

Co-Founder and Managing Director

Brian Flynn Jr.

Co-Founder and Managing Director

David Spurlock

Managing Director

Dean Donovan

Co-Founder and Managing Director

9 past transactions

Wingtra

Series B in 2024
Wingtra is a Swiss drone manufacturer that designs the WingtraOne, a vertical take-off and landing VTOL fixed-wing drone that combines plane-like efficiency with VTOL versatility to deliver high-precision aerial data for surveying, mapping, and infrastructure projects. The platform supports sectors including construction, mining, agriculture, forestry, environmental monitoring, urban planning, and land management by capturing detailed data over large areas. Founded in 2014 and launching its market-ready product in 2017, Wingtra serves a global customer base through a network of surveying equipment dealers, enabling professionals to digitize and monitor surroundings with reliable flight performance.

SwissDrones

Series B in 2024
SwissDrones is an aviation company focused on the development, manufacturing, and operation of long-range unmanned helicopter systems tailored for commercial and public safety applications. The company’s innovative twin-rotor aircraft are engineered to serve as cost-effective alternatives to manned helicopters, significantly reducing carbon emissions and minimizing risks to crew members during operations in adverse weather conditions. SwissDrones' systems are particularly useful for aerial surveillance, search and rescue operations, and the inspection of critical infrastructure. They support the integration of advanced sensor payloads and facilitate long-range, beyond visual line of sight operations, enabling effective missions both day and night with a multi-hour endurance.

AlarisPro

Venture Round in 2023
AlarisPro offers a web-based subscription service providing unmanned aircraft system (UAS) operations and fleet management services. Its platform offers real-time data and component-level tracking, enabling proactive maintenance, issue prediction, and optimization of fleet operations for commercial UAS operators and manufacturers across various industries.

Wingtra

Series B in 2023
Wingtra is a Swiss drone manufacturer that designs the WingtraOne, a vertical take-off and landing VTOL fixed-wing drone that combines plane-like efficiency with VTOL versatility to deliver high-precision aerial data for surveying, mapping, and infrastructure projects. The platform supports sectors including construction, mining, agriculture, forestry, environmental monitoring, urban planning, and land management by capturing detailed data over large areas. Founded in 2014 and launching its market-ready product in 2017, Wingtra serves a global customer base through a network of surveying equipment dealers, enabling professionals to digitize and monitor surroundings with reliable flight performance.

SwissDrones

Venture Round in 2023
SwissDrones is an aviation company focused on the development, manufacturing, and operation of long-range unmanned helicopter systems tailored for commercial and public safety applications. The company’s innovative twin-rotor aircraft are engineered to serve as cost-effective alternatives to manned helicopters, significantly reducing carbon emissions and minimizing risks to crew members during operations in adverse weather conditions. SwissDrones' systems are particularly useful for aerial surveillance, search and rescue operations, and the inspection of critical infrastructure. They support the integration of advanced sensor payloads and facilitate long-range, beyond visual line of sight operations, enabling effective missions both day and night with a multi-hour endurance.

Volantio

Series A in 2022
Volantio Inc. is a technology company based in Atlanta, Georgia, that specializes in software solutions aimed at enhancing customer engagement and revenue optimization for airlines. Founded in 2008, Volantio offers a suite of products, including the SmartAlerts platform, which allows travel suppliers to engage with potential customers who are browsing but not yet ready to book. The company also provides PriceStream for AdWords, which integrates dynamic pricing and availability into advertising campaigns, and PriceStream for retargeting, which utilizes customer browsing data to create targeted advertisements. Volantio's solutions focus on maximizing unit revenues, improving capacity utilization, and enhancing the overall travel experience by enabling airlines to dynamically re-accommodate passengers and providing them with greater predictability and control over their journeys. The company serves several major airlines worldwide, leveraging automated, mobile-based, and machine learning-driven technology to optimize operations and customer satisfaction.

VerdeGo Aero

Series A in 2022
VerdeGo Aero is a manufacturer focused on developing advanced propulsion technologies for the next generation of aircraft, particularly hybrid-electric vertical take-off and landing (VTOL) vehicles. Founded in 2017 by a team of experts in hybrid-electric and battery-electric aviation, the company has pioneered the hybrid-electric IDEP powertrain architecture, which enhances performance compared to conventional battery-electric aircraft. VerdeGo Aero aims to provide on-demand aerial mobility solutions, enabling cost-effective short-range transportation for clients. Through its innovative technologies, the company seeks to redefine the capabilities of aerial transport while addressing the growing demand for efficient and sustainable aviation solutions.

Elroy Air

Series A in 2021
Founded in 2016, Elroy Air is a San Francisco-based aerospace company specializing in autonomous cargo delivery. It operates an aerial system featuring rotor-based vertical takeoff and landing, transitioning to wing-based cruise flight for long-range deliveries. The company serves commercial, humanitarian aid, and military applications.

Stellar Labs

Series A in 2017
Stellar Labs, Inc., incorporated in 2014 and based in Burlingame, California, operates within the technology sector, focusing on the private aviation industry. The company has developed an advanced commercial operations system that integrates an all-digital distribution network, aiming to transform and enhance business aviation. Stellar Labs offers a suite of cloud-based applications designed to cater to a range of operational needs, from simple single-aircraft management to complex operations involving large fleets and multiple bases. This innovative approach positions Stellar Labs as a key player in revolutionizing the efficiency and effectiveness of private aviation services.
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