Saint Andrews - sas.to/stadf

Hi Folks -

Need some assistance. WTF. SAS.TO could have been down today as one of their mines has a temporary issue. But up 3%.

However, STADK.PK - the pink sheet equivalent? Well - it is what I own. I thought it was the same as sas.to - well - its down over 30%. Can somebody explain to me why that would be the case?

If not - somebody make some money on this arbitrage opportunity.