Today's morning also price went up to 19.70. But right after 1.30 p.m. someone sold 3000 shares at 19.00 so the close was 19.20.
This happened previously also, ppl sell after 1.30 at lower prices so they could maintain the closing price low.
I think this is well planed as the seller knows closing price is calculated after 1.30 trades (Last one hour average).
Note: Few big quentities traded at 19.20, 18.80 etc.
For your attention only.