When the global market is down nothing can be a reliable store of value.
But we still choose something that we think would help us to store our money, and for me that should be bitcoin as I believe on its potential.
Now everything is decimated. Bitcoin isn't an exception + get into consideration its volatility.
Volatility is quite a nature of bitcoin already, that is due to the fact that it has limited supply and there is no specific demand yet and it's been traded as well, so when people like to speculate, this will move the asset, but its long term is actually good, it would not reach at the current price if people does not believe on bitcoin.