{
  "experiment": "C6-WEEKLY-FRESH-v1-20261112",
  "strategy_version": "C6-PP1535-v1-20261111",
  "user_correction": "Each window is an independent new investment, not a slice of continuous strategy holdings. Weekly Monday entry, defer nontrading Mondays until next actual common trading session.",
  "entry_grid": "Calendar Mondays on or after first common available data date; first planned Monday is2007-06-04. No invented earlier entry before BIL common inception. Initial four asset weights25%, fresh initial capital1, initial5bps cost included for every window.",
  "end_rule": "If10th calendar anniversary is observable, use first common session on or after anniversary. Otherwise use latest admitted snapshot session. Require at least3 full calendar years from actual entry. Exclude shorter windows, never extrapolate them to10years.",
  "groups": ["full10calendar years with disclosed trading-day alignment","3to<4","4to<5","5to<6","6to<7","7to<8","8to<9","9to<10"],
  "execution": "Every held common session check strict15/35. Freeze quantities and trade next common close, no calendar resets. Weekly grid applies only to new entry cohorts, not rebalance monitoring. Cash nonnegative,5bps per buy/sell, no leverage, no forced final liquidation.",
  "metrics": "CAGR=(ending NAV / initial capital1)^(365.25/actual days)-1; include entry fee. Also total return, actual years, max drawdown against initial1, trigger/rebalance counts. Independently recompute selected full paths using existing audited engine.",
  "reporting": "10-year and shorter cohorts separate. Each observed calendar start is a scenario; overlapping historical window frequency is not independent future probability.",
  "data_gate": "Latest3号 research-adjusted snapshot only after handoff explicitly permits research. Raw new snapshot currently known missing distributions must not be used as approved input. Old sample allowed for engine validation only, label its known event limitation.",
  "preservation": "Old continuous-window results and old strategies kept unchanged; current definition remainsC6-PP1535-v1, only primary starting-date evaluation method is superseded. No account or service mutations."
}