$BYD Company Limited(BYDDF.US) rose 40%? What's the situation?

$BYD Company Limited(BYDDF.US) rose 40%? What's the situation?

BYD Company Limited
USBYDDF
$GIANT BIOGENE(02367.HK) What's going on? Why is it expanding net inflows are increasing while the price keeps falling?

GIANT BIOGENE
HK02367
$AUTOHOME-S(02518.HK)What's going on here?

AUTOHOME-S
HK02518