Rainbow Robotics (277810)

Rainbow Robotics (277810) is a KOSDAQ-listed Korean robotics company spun out of KAIST, building collaborative robots, dual-arm manipulators, bipedal humanoids, and quadrupeds. In ETFpedia it represents the Korea manufacturing theme as an early-stage automation play, now backed by Samsung Electronics as its largest shareholder, but still small and not yet profitable.

Ticker277810
ExchangeKOSDAQ
SectorRobotics · Collaborative & Humanoid Robots
CountrySouth Korea
WikidataQ110114830
Last updated2026-06-04
Financial snapshotas of2026-05-15

Next event:Next report · H1 2026 반기보고서, estimated · Estimated from Korea's 45-day semi-annual filing deadline; not company-confirmed. Last report: Q1 2026 분기보고서 filed 2026-05-15. (source)

Latest reported quarter:Q1 2026 (ended Mar 31, 2026) (reported2026-05-15)

Rainbow Robotics grew Q1 2026 revenue 117% year over year to ₩91억 (about KRW 9.1 billion) on stronger robot shipments, but the company remains pre-scale and posted an operating loss of ₩16억 (KRW 1.6 billion), slightly wider than a year earlier.

Revenue₩91억 (KRW 9.1B)+117%YoY
Operating profit₩-16억 (KRW -1.6B)-12%YoY · Operating loss; pre-scale

Primary source

Recent & upcoming events

  • · Samsung Electronics becomes largest shareholder.Samsung exercised a call option, paying about KRW 267 billion (~$181 million) to lift its stake toward 35% and make Rainbow Robotics a consolidated affiliate, alongside a new Future Robotics Office. (source)
  • · FY2025 사업보고서 filed.Full-year 2025 revenue ₩341억 (KRW 34.1B, +76% YoY) with an operating loss of ₩-25억 (KRW -2.5B), narrower than 2024's ₩-30억. (source)
  • · Q1 2026 분기보고서 filed.Revenue more than doubled YoY to ₩91억 (KRW 9.1B), though the company stayed loss-making at the operating line. (source)

Figures are consolidated (연결) per Rainbow Robotics' DART filings. Revenue base is small and growth percentages are off a low denominator; the company is pre-scale and not yet profitable at the operating line.

Figures are as of 2026-05-15 and reflect the most recent public filings/IR releases; they are updated after each earnings report.

What does Rainbow Robotics do?

Rainbow Robotics was founded in 2011 by researchers from KAIST, the team behind Korea’s Hubo humanoid. Today it builds a spread of robot platforms: the RB series of collaborative robots (cobots), the RB-Y1 dual-arm mobile manipulator, bipedal humanoid research platforms (Hubo and DRC-Hubo), and the RBQ family of quadrupeds. These are the building blocks of factory and logistics automation, which is why the company fits the Korea manufacturing theme. Revenue is still small: FY2025 sales were ₩341억 (about KRW 34.1 billion), up 76% year over year (DART 사업보고서).

Why is Samsung Electronics Rainbow Robotics’ largest shareholder?

Samsung first bought a 14.7% stake in 2023, then exercised a call option in early 2025, paying roughly KRW 267 billion (about $181 million), to lift its holding toward 35% and consolidate Rainbow Robotics as an affiliate. Samsung paired the move with a new Future Robotics Office aimed at intelligent humanoids.

“By combining Samsung Electronics’ AI and software technology with Rainbow Robotics’ robotics technology, the collaboration plans to accelerate the development of intelligent advanced humanoids.”

(Samsung Global Newsroom)

That backing gives a small Korean robotics firm a deep-pocketed strategic parent, capital, and a path into Samsung’s manufacturing footprint (The Robot Report).

What did Rainbow Robotics report most recently?

In Q1 2026 (the quarter ended March 31, 2026), Rainbow Robotics grew revenue 117% year over year to ₩91억 (about KRW 9.1 billion) on stronger robot shipments (DART 분기보고서). The growth rate is striking, but it comes off a very low base, and the company is honest about the bottom line: it posted an operating loss of ₩-16억 (about KRW -1.6 billion) in the quarter, slightly wider than a year earlier. For the full year 2025 it posted an operating loss of ₩-25억, narrower than 2024’s ₩-30억 loss, so the trend is improving but the business is still pre-profit.

What are the risks for Rainbow Robotics?

  • Pre-scale and unprofitable. Revenue is small and the company is loss-making at the operating line, so the thesis rests on future scaling that has not yet arrived.
  • High growth off a low base. Triple-digit percentage growth is real but flattering, because the denominator is tiny.
  • Execution and competition. Humanoid and cobot markets are crowded and capital-intensive, with global and Chinese rivals moving fast.
  • Parent dependency. Much of the bull case leans on the Samsung relationship; the pace and scope of that collaboration shape the outlook.

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Frequently asked questions about Rainbow Robotics

What does Rainbow Robotics do?

Rainbow Robotics is a Korean robotics company that started at KAIST. It makes collaborative robots (the RB series), a dual-arm mobile manipulator called RB-Y1, bipedal humanoid research platforms (Hubo and DRC-Hubo), and quadruped robots (RBQ). In FY2025 it reported revenue of ₩341억 (about KRW 34.1 billion), up 76% year over year, though it remained loss-making (DART 사업보고서).

Why is Samsung Electronics Rainbow Robotics' largest shareholder?

Samsung first took a 14.7% stake in 2023, then exercised a call option in early 2025 (about KRW 267 billion, roughly $181 million) to raise its holding toward 35% and consolidate Rainbow Robotics as an affiliate, pairing it with a new Future Robotics Office to accelerate intelligent humanoids (Samsung Newsroom).

Is Rainbow Robotics profitable?

No. Rainbow Robotics is still pre-scale. In FY2025 it posted an operating loss of ₩-25억 (about KRW -2.5 billion) on revenue of ₩341억, and in Q1 2026 it posted an operating loss of ₩-16억 even as revenue grew 117% year over year to ₩91억 (DART 분기보고서). Growth is fast but off a low base, and the company is not yet profitable at the operating line.

When does Rainbow Robotics next report earnings?

Korean issuers do not pre-announce earnings dates. Based on Korea's 45-day semi-annual filing deadline, the H1 2026 반기보고서 is expected around August 14, 2026; that date is estimated, not company-confirmed. Rainbow Robotics last filed its Q1 2026 분기보고서 on May 15, 2026 (DART).

Sources & references

  1. 레인보우로보틱스 분기보고서 (2026.03) · Rainbow Robotics / DART (Financial Supervisory Service), 2026-05-15
  2. 레인보우로보틱스 사업보고서 (2025.12) · Rainbow Robotics / DART (Financial Supervisory Service), 2026-03-20
  3. Samsung Electronics To Become Largest Shareholder in Rainbow Robotics Accelerating Future Robot Development · Samsung Global Newsroom, 2024-12-31
  4. Samsung increases stake in Rainbow Robotics, establishes Future Robotics Office · The Robot Report, 2024-12-31