NGK Insulators, Ltd. (5333.T) stock analysis

In our weekly check, NGK Insulators, Ltd. is graded C (A to F). Of 25 checks on debt, profit, cash flow and trend: 17 pass, warnings: 2, red flags: 6.

About NGK Insulators, Ltd.

NGK Insulators, Ltd. is an Industrials company (Electrical Equipment & Parts) based in Japan, listed on JPX as 5333.T.

What our checks show for 5333.T

Red flags

• Operating profit does not cover the interest bill (0.2x): interest is paid from cash or new debt.
• The net margin fell by 4.9 points over 5 years, to 8.9%: the company keeps less of each sale as profit.
• The gross margin fell by 5.3 points, to 29%: costs are rising faster than prices.
• The dividend takes 5214% of profit: little cushion if profit falls.
• The stock has fallen as much as 82% from a peak. Would you have held through that?
• Recovering from its deepest fall took about 13 years.

Warning signs

• The net margin is only 8.9%: little room if costs rise.
• The price swings a lot: 44.8% annual volatility. Expect large ups and downs.

Strengths

• Net debt is only 0.5x a year of EBITDA: the balance sheet has room.
• Operating cash flow is 2.3x net profit: the profit arrives as real cash.
• Analysts expect earnings per share to grow about 21.8% a year over the next years.
• Analysts expect the net margin to improve by 4.4 points from today's 8.9%.
• Free cash flow is 12.7% of revenue: cash for dividends, buybacks or growth.
• The price is 13.6 times earnings (P/E), reasonable for its growth.

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Questions

What grade does NGK Insulators, Ltd. (5333.T) have?

In our weekly check, NGK Insulators, Ltd. is graded C (A to F). Of 25 checks on debt, profit, cash flow and trend: 17 pass, warnings: 2, red flags: 6. The grade is a risk check, not a buy or sell recommendation.

What are the main risks of 5333.T stock?

This week's biggest flags for NGK Insulators, Ltd.: Weak interest cover, Margins falling, Gross margin falling. In total 8 of 25 checks show a warning or a red flag.

What does NGK Insulators, Ltd. do?

NGK Insulators, Ltd. is an Industrials company (Electrical Equipment & Parts) based in Japan, listed on JPX as 5333.T.

The grade is a risk check, not a price forecast, and not investment advice. In our 10-year test (S&P 500, 2016-2026), stocks we graded A or B fell more than 30% 2-3 times less often than D or F, without a lower average return.

Updated 2026-10-31

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