Investing 10% of portfolio my into one stock?

My portfolio is currently:

30%AVUV (small cap value)

30% SCHG (large cap growth)

30%SPLG. (S&P500)

I wanted to diversify the last 10% of my portfolio among 3 to 5 specific stocks.

However I’ve found one I really like and can’t find any others that call out to me to the same extent.

The company has good fundamentals and seems to be undervalued with potential for further growth.

Even if it doesn’t grow it seems extremely unlikely it would lose me money.

So I’m wondering what others think about me just putting all 10% into that one stock.