Has wiki lost some market share?

[FXCMSEO]

I work in the financial space for a forex broker, and noticed this week that Wikipedia dropped from #1 for [forex] to about 8. Good for us, but just wondering if anyone else has seen wiki market share drop and if any big data SEO projects have seen any fluctuation for wiki. Researching why this may have happened.

[KevinBudzynski]

I definitely have seen some drops in wiki over the last 6 month or so.  Anyone else?