Yield On T-Bills in Brokerage Account

I have a brokerage account devoted to T-bills and T- notes and I hold all to maturity. When I sell, I sell at the purchase price to make sure no capital
gain occurs and credit the account with interest paid.
But the portfolio view does not show any indication of performance for this account. I have tried various ratios such as ROI and so forth but it won't spit out the performance in this particular view.
Is there a way to make show the performance in the portfolio view?
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