Investment fund automatic?

My investment fund went down by around 11 billion without me buying shares or anything, can it automatically do that?

It's just that I don't remember it ever going down before, especially around 11B

If you have the automatic buy and sell on - it can automatically trade shares by itself. However, even with this off:

Remember, recently all corporations value decreased. Hence, the value of each share also decreased - in the same proportion. I'm looking for it to hit a floor soon, and start correcting itself. More important then the value is the profitability - which should be slightly better now than before.

Regards,
M. Ney