Diversis Capital has acquired a majority stake in Tideworks Technology from Carrix for an undisclosed sum, separating the terminal operating system (TOS) supplier from SSA Marine's parent after 25 years under common ownership.

Los Angeles-based Diversis bought the controlling interest from Carrix, the holding company that owns SSA Marine. The transaction cuts the corporate line between Tideworks and the terminal operator it has continuously supplied since its 1998 founding out of SSA Marine's IT department.

Tideworks runs mission-critical software at 130 marine and intermodal rail terminals worldwide. It will continue to serve sister company SSA Marine under the new arrangement.

Why is Blackstone exiting Tideworks?

The deal closes a process that began when Blackstone Infrastructure Partners acquired an initial stake in Carrix in 2019 and a controlling interest in 2021.

Persistent market chatter had Blackstone searching for a buyer for Tideworks for several months.

Carrix CEO Uffe Ostergaard positioned the divestment as a deliberate search for a software-specialist owner. "Since its founding, Tideworks has been an integral part of Carrix, and we are proud of the exceptional product and team that has been built over the past 25 years," Ostergaard said.

He added: "As Tideworks enters this next chapter, it was important to us to find a partner with deep software experience to work closely with the Tideworks leadership team."

The sale continues a market-wide pattern: virtually every TOS spun off from a terminal operator in the late 1990s has since been absorbed or extinguished through M&A involving that parent.

Tideworks is one of the last independent survivors of that wave — other in-house commercialisations have either returned to their operator parents or shut down as those operators consolidated.

What changes for terminals and shippers?

Day-to-day operations at the 130-facility installed base continue without interruption. Tideworks President Subbu Bhat said independence under Diversis will accelerate product development.

"As an independent software company backed by Diversis, we are well-positioned to accelerate our product roadmap, expand our global footprint, and continue delivering the innovation and service that terminal operators around the world depend on," Bhat said.

Shippers see no direct service disruption: TOS sits one layer removed from the freight booking. But operating efficiency at those 130 facilities feeds straight into vessel turnaround, gate congestion and ultimately freight rates on every trade lane they serve.

Procurement and vendor choice are the immediate commercial consequences:

• The TOS market loses its last operator-aligned vendor link among the major suppliers, sharpening Tideworks's claim to independent status
• Terminal operators gain a non-operator-affiliated option in a market long dominated by captive software arms
• Diversis's stated appetite for bolt-on deals signals potential platform expansion
• SSA Marine keeps its existing TOS relationship, but the corporate separation ends preferential alignment

How does Diversis approach port technology?

Diversis holds more than 30 software and technology businesses across multiple end markets, with a stated focus on controlling investments in operationally focused lower-middle-market software companies.

Kevin Ma, Co-Founder and Managing Partner of Diversis Capital, framed Tideworks as a long-sought vertical play. "We have been looking for the right vertical software business in the port and logistics technology space for some time," Ma said.

He added: "Tideworks is exactly the type of company we love to partner with – a true market leader with a mission-critical product, a loyal and growing customer base, and a highly talented management team."

The PE firm's stated playbook — investing in product innovation, go-to-market capability and customer relationships — points toward platform expansion rather than a roll-up into adjacent supply chain software. Unlike competitor deals that fold TOS functionality into broader logistics stacks, this transaction keeps Tideworks standalone.

With Carrix formally separated from its longest-tenured software asset, market attention turns to whether Diversis pursues adjacent terminal-tech acquisitions and how quickly Tideworks can translate its 130-terminal footprint into expanded commercial reach across container, breakbulk and intermodal segments in the coming quarters.