You can't take a tether and redeem it for a dollar, so it doesn't really even have a price. Tether is just a placeholder for a dollar in the crypto-world.
Furthermore, Bitcoins aren't really priced in United States Dollars anymore, they are priced in Tether Dollars. The price reported on CNBC is tether dollars.
It's so synthetic, even that chart doesn't really matter. So, where can we find real dollars being exchanged for Bitcoin? We can find that in the GBTC trust. I would argue the actual price of a Tether is equal to the GBTC discount, which currently sits at 37%. So, a tether dollar is actually about 0.62 dollars.