The original US equity returns are corrected to S&P 500 plus 0.17% and Nasdaq plus 0.39%. A dated retrospective with source-linked closing observations and transparent calculations.
Historical review through 2026-09-18: Was the Five-Percent Yield a Daily Move or a Level? Source-linked daily data, a five-observation comparison and explicit corrections.
Historical review through 2026-09-16: How Did the Won and Yen Comparisons Differ? Source-linked daily data, a five-observation comparison and explicit corrections.
Historical review through 2026-09-15: How Large Was the Oil Move Relative to Five Sessions? Source-linked daily data, a five-observation comparison and explicit corrections.
Historical review through 2026-09-14: How Large Was the Corrected Korean Decline? Source-linked daily data, a five-observation comparison and explicit corrections.
Historical review through 2026-09-11: Did the Gold Change Support a Record-High Claim? Source-linked daily data, a five-observation comparison and explicit corrections.
Historical review through 2026-09-10: How Different Were the Daily and Five-Session VIX Moves? Source-linked daily data, a five-observation comparison and explicit corrections.
Historical review through 2026-09-09: Did Oil and Gold Move Together Over Both Intervals? Source-linked daily data, a five-observation comparison and explicit corrections.
The original 4.00% KOSPI gain had the wrong sign. A dated retrospective with source-linked closing observations and transparent calculations.
Historical review through 2026-09-07: Can US and Korean Data Establish Euro-Area Calm? Source-linked daily data, a five-observation comparison and explicit corrections.