f/overrides/event-backup/ifra-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

695 B

1DateDividends
22020-12-140.195000
32021-09-240.227000
42024-12-170.227000
52025-03-180.267000
62025-09-160.216000
72018-12-170.356000
82019-06-170.103000
92022-03-240.171000
102022-09-260.223000
112024-06-110.171000
122019-03-200.098000
132023-12-200.234000
142020-06-150.099000
152024-03-210.160000
162025-06-160.184000
172021-12-130.198000
182020-09-230.115000
192021-03-250.104000
202021-06-100.095000
212023-06-070.162000
222025-12-160.300000
232026-03-170.275000
242026-06-150.183000
252018-06-260.103000
262020-12-300.064000
272022-06-090.096000
282023-03-230.177000
292023-09-260.223000
302020-03-250.148000
312022-12-130.229000
322019-09-240.130000
332019-12-160.150000
342024-09-250.250000
352018-09-260.116000