NOK/SEK is the rate between the Norwegian krone and the Swedish krona, telling you how many krona one krone will buy. This is the classic Scandinavian cross, pairing two neighbouring economies, and because it sits well outside the majors it carries wider spreads and lighter liquidity.
The Norwegian krone is the base currency and the Swedish krona the quote currency, so a quote of 0.9800 means one krone buys 0.9800 krona. A higher quote means the krone is firming against the krona, a lower one means it is easing. You access it through a forex CFD, taking a long position if you expect the krone to outperform or a short position if you expect the krona to, with no exchange of physical currency. Each pip is the fourth decimal place, and your result is the pips you capture multiplied by your position size.
The distinguishing driver here is oil. Norway is a major crude exporter, so the krone tends to track the oil price alongside Norges Bank policy, whereas the krona leans on the Riksbank and on conditions in the neighbouring eurozone. When crude rallies the krone often gains the upper hand, and when global risk sentiment sours both currencies can wobble, leaving the cross to reflect the gap between Norwegian energy fortunes and Swedish trade exposure.
Say NOK/SEK is trading at 0.9800 and you expect the krone to strengthen, so you buy one standard lot (100,000 Norwegian krone). Each pip is worth 10 Swedish krona, so a 50-pip rise to 0.9850 amounts to:
50 √ó 10 = 500 krona
A 50-pip fall to 0.9750 would cost 500 krona. The position is leveraged, so you fund only a small part of the 98,000 SEK contract value as margin, which enlarges both the profit and the loss.