Sweden is at the zero bound because they are trying (and failing) to fight deflation. I don't think the average Swede or even most of the elites realize the Euro peg is untenable. So when the krona spikes, BTC will appear to go down in price, which will either make it appear cheaper and therefor more attractive or diving in value and therefor radioactive.
What is crazy is that they have negative interest rates in the middle of a housing bubble. Sweden is going to be an economic basket case. That may actually be good for bitcoin, but it's far from certain.
Take a close look at this list before you make further bold analytic claims about Nasdaq Stockholms potential regarding bitcoin:
http://www.nasdaqomx.com/transactions/markets/nordic/membership/membership-lists
I asked a question. I made no bold claims.