How the numbers are worked out.
Buys and sells are read from your transfers and priced in ETH, net of router refunds. Because Robinhood Chain doesn't expose internal transfers, sell proceeds are recovered by comparing your ETH balance either side of each swap — accurate for a normal wallet, but a wallet doing several things in one block can read slightly off. Tokens fed to the furnace are treated as spent rather than sold, and set against what your brokers have paid back in USDG.