$SIA (C6L.SG)$ is there some sys problem? set a buy limit order at 4.9 but the order not getting fulfilled when the price hit 4.9 a few times liao

$Pfizer (PFE.US)$ will it reach a new historical high?

$Camber Energy (CEI.US)$ is this ship going to the bottom?

$SIA (C6L.SG)$ seems to be holding steady at 5. pending news travel restrictions. bought a bit at 5 and will buy again if it dips below that. Will hold on to it after for longer term.