Niterra Co., Ltd. (5334.T) : juste valeur

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Niterra makes the oxygen and NOx sensors that sit in automotive exhaust systems, along with the spark plugs and ceramic components that go into them, and it sells most of these to global engine and vehicle makers. Its advantage is the installed base: once a sensor is specified into a platform it stays there for the life of the model, which gives the business a durable replacement and aftermarket tail. Revenue grew 19.9% and operating margin reached 20.1% with a 38.1% gross margin, so the business is converting growth into profit at an unusually high rate for an auto supplier. The stock trades at 7.4 times trailing earnings and 7.0 times forward earnings, while returning 24.8% on equity, a combination that leaves little room for the market to be pricing in a deterioration in the company's end markets. The open question is how durable the margin is as combustion-engine volumes decline and electrification changes what sensing content each vehicle needs, which is the core diligence question to answer before going further.