Whatever. It's not a lot of money in the last 24 hours the trading volume of BTC was about $34 billion.
Even if they moved the 2 billion to sell all at once it's less then 10% of the average daily volume.
But it does make for an impressive headline.
Impressive observance, where did you get this source. Let's see how much this affect the bitcoin price. And on the other hand it's payday to the government, having that kind of huge free money, surely will throw a party.