$BTC
I keep to the principal of sell on good news.
Anyway even if the U.S. is buying BTC for reserve, it won't be directly at market but will be with Tender Over to not disrupt the market.
My advice is don't go FOMO and go all in.
Manage your own risk and just do DCA.
If you are unfamiliar with DCA, you can google it "Dollar Cost Averaging"
Also only use cold money to invest.
What's considered as Hot Money?
Imagine if you buy BTC using the money that you will need next month to pay for rent, or to pay for your kids tuition.
Then when it's almost due, your position is at loss.
This is one of the main reason of "Buy High Sell Low".