f/overrides/event-backup/gssc-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

715 B

1DateDividends
22024-03-220.196000
32024-06-240.230000
42025-12-230.247000
52018-03-230.086000
62019-03-250.121000
72021-12-270.331000
82021-09-240.119000
92023-12-260.315000
102018-09-240.118000
112019-06-240.155000
122020-09-240.114000
132022-12-270.301000
142026-03-250.205000
152024-12-230.437000
162025-09-240.271000
172020-12-240.145000
182022-03-250.161000
192022-06-240.156000
202020-03-250.155000
212021-03-250.113000
222022-09-260.096000
232024-09-240.116000
242025-06-240.194000
252018-06-250.105000
262019-09-240.112000
272019-12-240.196000
282026-06-240.214000
292017-09-220.095000
302023-09-250.118000
312025-03-250.176000
322017-12-210.221000
332021-06-240.106000
342023-06-260.230000
352018-12-240.161000
362023-03-270.176000