{
  "description": "Reconstructed 399-stock original-paper universe inferred from Post 1 post-publication October 21, 2026 393 shared + six original-only - seven post1-only securities",
  "verification_status": "Membership reconstruction from published Section 6, not a direct byte-for-byte original data/universe.csv archive",
  "reference_article": "https://cenk-yildiran.com/writing/post-1/",
  "source_snapshot": "research/post-1/results/post1_reproducibility_manifest.json (400 ticker keys)",
  "original_only": [
    "CPRI",
    "ILMN",
    "OLN",
    "P",
    "SAM",
    "TWLO"
  ],
  "post1_only_excluded": [
    "AGNC",
    "CORT",
    "CTVA",
    "EAT",
    "FORM",
    "HUBS",
    "MOG-A"
  ],
  "expected_count": 399,
  "sha256": "9422952966c99a5e19a541705742f72c629b7bd1d4d2becc37b392eb25de6c52",
  "frozen_research_start": "2021-09-13",
  "frozen_research_end": "2026-09-10"
}