The NEOS S&P 500 High Income ETF (SPYI) shows a distribution rate near 11.78% and an SEC 30-day yield of 0.47%. An analysis explains this discrepancy arises because the SEC's yield calculation formula, designed for bond coupons and stock dividends, excludes income from option premiums, which are SPYI's primary source of income. The fund's total return, up 11% year-to-date and 18% over the trailing year, is suggested as a more reliable metric than either yield figure, with future payouts dependent on the VIX (implied volatility index).