f/overrides/event-backup/ffiu-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

1.7 KiB

1DateDividends
22017-10-300.060000
32018-01-300.044000
42022-04-280.053000
52025-12-300.220000
62019-10-300.063000
72020-01-300.053000
82021-04-290.053000
92022-01-280.050000
102023-06-290.068000
112021-10-280.055000
122023-09-280.066000
132026-03-300.225000
142019-01-300.063000
152020-04-290.055000
162022-05-270.055000
172023-03-300.064000
182023-12-280.230000
192018-07-300.050000
202018-11-290.060000
212019-11-270.061000
222020-12-290.134000
232021-11-290.052000
242022-08-300.058000
252023-02-270.063000
262024-06-280.210000
272018-08-300.050000
282018-09-270.050000
292021-01-280.054000
302022-02-250.050000
312023-10-300.013000
322018-10-300.060000
332019-05-300.063000
342020-10-290.055000
352021-06-290.054000
362023-05-300.066000
372018-12-280.070000
382020-06-290.050000
392023-01-300.060000
402025-06-270.210000
412019-03-280.060000
422019-08-290.063000
432020-07-300.056000
442021-09-290.055000
452021-12-300.252000
462023-07-280.069000
472024-03-280.225000
482025-09-290.220000
492026-06-290.223000
502018-06-280.055000
512019-02-270.055000
522020-05-280.055000
532020-11-270.053000
542021-07-290.054000
552022-06-290.058000
562022-12-290.070000
572022-11-290.064000
582018-02-270.040000
592019-09-270.063000
602020-03-300.060000
612020-09-290.054000
622021-02-250.053000
632022-03-300.052000
642022-07-280.058000
652018-03-280.050000
662018-04-270.050000
672019-07-300.065000
682021-05-270.054000
692022-09-290.063000
702022-10-280.063000
712025-03-280.215000
722017-12-280.052000
732018-05-300.050000
742019-12-300.066000
752023-04-270.065000
762023-08-300.074000
772024-09-270.210000
782017-11-290.052000
792019-04-290.063000
802020-08-280.053000
812021-03-300.053000
822024-12-300.220000
832020-02-270.055000
842019-06-270.060000
852021-08-300.055000