f/overrides/event-backup/gsie-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

895 B

1DateDividends
22017-03-240.094000
32017-09-220.116000
42020-03-250.072000
52021-09-240.265000
62024-12-230.179000
72019-09-240.100000
82021-06-240.326000
92022-03-250.149000
102022-06-240.459000
112022-09-260.112000
122026-03-250.143000
132016-03-230.069000
142019-12-240.217000
152020-12-240.108000
162024-12-310.043000
172025-06-240.563000
182025-12-230.219000
192024-03-220.135000
202024-06-240.450000
212016-06-230.229000
222017-12-210.212000
232022-12-270.145000
242023-06-260.449000
252023-09-250.139000
262023-12-260.149000
272025-03-250.131000
282016-09-230.102000
292020-06-240.211000
302021-03-250.123000
312018-06-250.330000
322021-12-270.133000
332025-09-240.224000
342015-12-230.031000
352016-12-220.123000
362017-06-230.272000
372018-12-240.198000
382020-09-240.120000
392026-06-240.588000
402018-03-230.083000
412018-09-240.069000
422019-03-250.119000
432019-06-240.411000
442023-03-270.200000
452024-09-240.229000