$NVIDIA (NVDA.US)$ dumb question, the thing that shows ticks and shows a price, beside it is a quantity and its either red-down, green-up, or grey-diamond. what is this representing

$NVIDIA (NVDA.US)$ thanks for the drop, i managed to pick up some more shares

$NVIDIA (NVDA.US)$ $NVIDIA (NVDA.US)$
just started trading, i think this was a good prediction

$NVIDIA (NVDA.US)$ bought a while ago at 672.3 before split. best decision ive ever made👌🏼👌🏼