f/overrides/event-backup/gscrx-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
22026-04-300.035000
32020-02-280.034000
42021-03-310.035000
52023-03-310.042000
62023-08-310.042000
72025-03-310.035000
82025-06-300.035000
92021-04-300.034000
102021-11-300.030000
112022-01-310.032000
122022-11-300.040000
132023-01-310.041000
142024-06-280.045000
152021-07-300.026000
162023-07-310.038000
172024-11-290.043000
182025-08-290.035000
192026-02-270.035000
202020-01-310.033000
212024-02-290.044000
222024-12-310.042000
232026-03-310.035000
242021-12-100.087000
252021-12-310.031000
262023-05-310.041000
272024-03-260.001000
282024-05-310.046000
292025-10-310.035000
302019-12-310.028000
312020-11-300.030000
322020-12-310.029000
332021-02-260.033000
342020-12-100.037000
352024-01-310.044000
362020-03-310.033000
372020-06-300.031000
382021-10-290.032000
392026-01-300.035000
402023-11-300.044000
412024-03-280.047000
422020-07-310.031000
432021-01-290.030000
442021-05-280.035000
452021-06-300.030000
462023-04-280.042000
472023-10-310.043000
482025-12-220.052000
492026-05-290.035000
502025-04-300.035000
512025-05-300.035000
522020-05-290.036000
532022-09-300.036000
542023-02-280.042000
552023-12-290.047000
562024-07-310.044000
572024-09-300.044000
582025-07-300.034000
592021-08-310.029000
602023-06-300.047000
612024-08-300.044000
622024-10-310.044000
632022-04-290.035000
642022-10-310.039000
652025-02-280.035000
662023-09-290.043000
672024-04-300.044000
682020-04-300.035000
692020-08-310.030000
702020-09-300.037000
712020-10-300.032000
722022-06-300.035000
732022-08-310.036000
742025-12-310.035000
752021-09-300.030000
762022-03-310.033000
772025-01-310.041000
782025-11-280.035000
792026-06-290.077000
802022-02-280.033000
812022-05-310.036000
822022-07-290.036000
832022-12-220.195000
842022-12-300.043000
852025-09-300.035000