Core idea (both): Own an S&P-500-like equity sleeve and sell index-linked call options to generate monthly cash flow. Where they diverge: Income target & profile: SPYI explicitly prioritizes high monthly income (it markets “high monthly income in a tax-efficient manner”) and commonly lands in the ~10–12% yield neighborhood, with substantial return-of-capital (ROC) in many months. NEOS Investments +1 Option design: GPIX uses a dynamic overwrite on an S&P 500 underlier (typically an ETF that tracks the index), and resets monthly in a 25%–75% coverage band; SPYI runs a net-credit call-spread program using SPX index options (sold calls plus longer-dated or farther-out-of-the-money purchased calls) to keep income high while retaining some upside. Goldman Sachs Asset Management +2 NEOS Investments +2 Fees: GPIX’s net expense ratio is 0.29% (gross 0.35% with a waiver to 0.29% in the summary prospectus), vs. SPYI at 0.68% . Goldman Sachs Asset Management +1 ...