{
  "version": "dated-sector-fund-comparison-v1-20261105",
  "selection_policy": "Fixed seven long-established domestic sector funds with 2012 issuer fact sheets identified before inspecting network comparison outcomes. No selection by 2021-2023 performance. ETF prices are tradable sector proxies, not complete official sector indices.",
  "funds": [
    {"symbol":"091160","sector":"semiconductors","fact_sheet_date":"2012-03-30","fact_sheet_url":"https://m.samsungfund.com/sheet/20120413/SHEET2238Kodex%EB%B0%98%EB%8F%84%EC%B2%B4.pdf"},
    {"symbol":"091170","sector":"banks","fact_sheet_date":"2012-09-28","fact_sheet_url":"https://m.samsungfund.com/sheet/20121011/2ETF08_20120928.pdf"},
    {"symbol":"091180","sector":"autos","fact_sheet_date":"2012-03-30","fact_sheet_url":"https://m.samsungfund.com/sheet/20120413/SHEET2237Kodex%EC%9E%90%EB%8F%99%EC%B0%A8.pdf"},
    {"symbol":"117460","sector":"energy_chemicals","fact_sheet_date":"2012-03-30","fact_sheet_url":"https://m.samsungfund.com/sheet/20120413/SHEET2236Kodex%EC%97%90%EB%84%88%EC%A7%80%ED%99%94%ED%95%99.pdf"},
    {"symbol":"117680","sector":"steel_metals","fact_sheet_date":"2012-10-31","fact_sheet_url":"https://m.samsungfund.com/sheet/20121112/SHEET2492ETF23_Kodex%EC%B2%A0%EA%B0%95_20121031.pdf"},
    {"symbol":"117700","sector":"construction","fact_sheet_date":"2012-02-29","fact_sheet_url":"https://m.samsungfund.com/sheet/20120312/SHEET64792Kodex%EA%B1%B4%EC%84%A4.pdf"},
    {"symbol":"140700","sector":"insurance","fact_sheet_date":"2012-04-30","fact_sheet_url":"https://m.samsungfund.com/sheet/20120510/SHEET2270Kodex%EB%B3%B4%ED%97%98.pdf"}
  ],
  "price_policy":"Use the fixed public dated close series on the original 494-day calendar; do not forward-fill missing sessions. Report coverage and adjustment-vintage uncertainty. Close-price returns exclude distributions.",
  "features":["sector_proxy_drop","sector_proxy_correlation_20"],
  "definitions":{"sector_proxy_drop":"Negative minimum daily close return across all seven sector funds; require all seven returns.","sector_proxy_correlation_20":"Mean of all 21 off-diagonal 20-session return correlations; require all seven complete return windows."},
  "comparators":{"sector_proxy_only":["sector_proxy_drop","sector_proxy_correlation_20"],"index_and_sector_proxy":["index_drop","index_volatility_20","sector_proxy_drop","sector_proxy_correlation_20"]},
  "fit_policy":"Reuse v2 training end 2022-05-31, test 2022-06-01 through 2023-05-30, max training-standardized score, training 95th-percentile cutoff, minimum 60 complete training rows, five-session cooldown and paired ten-session block bootstrap with 1000 resamples and seed 20261105.",
  "claim_gate":"Primary raw_w7_l5_combined must beat both index_only_combined and index_and_sector_proxy on the prespecified precision interval and event-onset condition before any exploratory incremental-value gate passes. Never promote a secondary variant because it scored best on this historical test.",
  "network_comparison_outcomes_inspected_before_freezing":false,
  "limitations":["Seven sector funds do not exhaust the Korean sector universe","Historical fund mandate changes and price revision vintages are not fully reconstructed","The underlying 2000-stock sample still has historical membership limits","This remains retrospective price-proxy evaluation, not independent anomaly certification"]
}