Your comments

Slight mis-statment on my part:: I was actually looking at prices for Parkland Fuel (PKI on TSE) when I mentioned the above %-ages for PKIUF. My mistake. The actual quotes for PKIUF are WILDLY different. I did not twig that PKIUF is not a good proxy for PKI - volume 1900 versus 435000, but SA did not allow me to use the PKI symbol in my Portfolio.

I apologize.

Example, Today, Feb 1, 11:45, quote for  Parkland Fuel (PKIUF) on my SA Portfolio news web page, says it is up about 6% (which it was at 10:00), but now is actually down 0.7%.

I would expect that SA quotes be out-of-date by no more than 15 minutes.

I'm using .Firefox 65.0 on Windows.