"It's funny that market didn't know to go up or down. Even...

"It's funny that market didn't know to go up or down.
Even though profits are up 10 percent with no revenue increase."

Yes. but that is for the full-year.

If you look at half-on-half changes (and you need to look at the Pre-Tax Profit line, and not the NPAT line, because the tax rate was quite light in JH2018), you'll get a quite different picture:

Pre-Tax Profit rose 14% in the first-half, but was flat in the second-half.

Why share prices do what they do on a day like this is anyone's guess.