f/overrides/event-backup/gem-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

635 B

1DateDividends
22017-03-240.034000
32017-09-220.238000
42022-03-250.227000
52018-09-240.273000
62019-09-240.319000
72021-06-240.210000
82021-12-270.200000
92023-06-260.190000
102018-03-230.036000
112017-06-230.155000
122018-06-250.181000
132019-06-240.216000
142020-12-240.224000
152021-09-240.700000
162023-09-250.208000
172016-09-230.201000
182019-03-250.190000
192023-03-270.339000
202025-12-230.958000
212016-06-230.158000
222020-09-240.260000
232022-06-240.362000
242022-09-260.180000
252022-12-270.069000
262023-12-260.174000
272015-12-230.062000
282016-12-220.122000
292017-12-210.221000
302018-12-240.138000
312019-12-240.350000
322024-12-230.823000