SK Square Backs Mujin Robotics Platform

SK Square has backed Japan's Mujin, adding to investor interest in the control software used to coordinate industrial robots across real factories.

What happened

South Korea's SK Square reportedly invested through its overseas subsidiary TGC Square in Japanese automation company Mujin's Series D. Reports put the wider financing at more than KRW 300 billion, although the amount invested by SK Square was not disclosed and the full round size has not been independently confirmed through an original financing statement. Mujin develops Mujin OS, software intended to direct and coordinate industrial robot systems used in manufacturing and warehouse operations. Rather than only selling a single robot design, its technology is meant to operate across different automation equipment.

Why it matters

Industrial automation is often limited not by the availability of robotic arms but by the software engineering required to adapt equipment to each workflow. Control platforms can reduce integration complexity and help systems respond to changing tasks. For investors, those capabilities offer a potential route to recurring revenue and a broader customer base than a specialised hardware product.

The bigger picture

Physical AI is increasingly discussed in terms of general-purpose robots, but many current commercial opportunities are in existing industrial environments. Mujin sits closer to that operational layer. The growth challenge is showing that the software can be deployed repeatably, supported economically and expanded across different factories and customers.