It will only be regarded as BTC holding if every price wave adds to it.
But these days, value is measured by how much USD is it. That's why.
It will be difficult to make it as a currency like fiat as long as the volatility is intact but there are merchants who are taking this risks just so they could prove it is a currency and also an asset at the same time.
Do we really need to define Bitcoin if it is an asset or a currency?
USD is being stored by most people outside the US because of its high value in their area. Does that mean it is an asset although it is fiat?