When you go to the deposit page and deposit one stable coin, it then gets split between each token in the pool. That’s something you have to keep in mind because if you were to deposit 1000 DAI in the yPool, a per the screenshot below, you would then get 46.1 DAI, 314.5 USDC, 490.2 USDT and 149.2 TUSD. Those values change constantly as people trade and arb the price of stable coins.