f/overrides/event-backup/nesgx-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

355 B

1DateDividends
22014-11-251.700000
32017-11-101.402000
42022-11-100.644000
52021-11-105.818000
62006-11-144.182000
72015-11-100.314000
82018-11-092.762000
92019-11-081.482000
102005-11-141.789000
112011-11-290.635000
122020-11-113.531000
132010-11-160.433000
142016-11-091.017000
152004-11-120.048000
162007-11-142.754000
172008-11-130.997000
182009-11-120.012000