f/overrides/event-backup/efrrx-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
22026-02-270.051000
32020-02-280.041000
42020-07-310.037000
52021-01-290.036000
62025-02-280.061000
72024-11-290.070000
82025-11-280.059000
92026-06-300.053000
102019-08-300.050000
112019-09-300.047000
122022-02-280.032000
132023-02-280.067000
142023-09-290.074000
152025-10-310.063000
162019-11-290.045000
172019-12-310.046000
182021-09-300.034000
192022-01-310.035000
202021-10-290.035000
212023-12-290.113000
222025-12-310.077000
232024-12-310.069000
242020-01-310.045000
252020-06-300.036000
262022-10-310.050000
272023-06-300.076000
282022-11-300.072000
292022-12-300.069000
302019-07-310.055000
312020-12-310.038000
322021-06-300.035000
332021-12-310.039000
342025-09-300.059000
352026-01-300.059000
362020-05-290.037000
372021-04-300.038000
382022-07-290.050000
392024-04-300.076000
402025-01-310.068000
412025-08-290.064000
422026-04-300.053000
432022-05-310.038000
442023-10-310.074000
452024-02-290.076000
462024-09-300.072000
472024-07-310.077000
482025-03-310.068000
492025-04-300.069000
502025-06-300.065000
512020-10-300.037000
522021-07-300.036000
532022-09-300.055000
542023-11-300.082000
552020-04-300.035000
562020-09-300.036000
572021-03-310.037000
582023-04-280.074000
592023-05-310.074000
602023-08-310.084000
612024-10-310.071000
622019-06-280.049000
632019-12-190.019000
642020-11-300.037000
652021-08-310.037000
662024-03-280.079000
672024-05-310.077000
682024-06-280.074000
692026-07-310.056000
702019-10-310.046000
712020-12-170.017000
722022-06-300.044000
732022-08-310.056000
742025-07-310.065000
752026-03-310.056000
762020-03-310.041000
772022-03-310.037000
782023-03-310.074000
792025-05-300.068000
802020-08-310.038000
812022-04-290.039000
822023-01-310.072000
832021-02-260.034000
842021-11-300.035000
852024-08-300.076000
862021-05-280.035000
872023-07-310.080000
882024-01-310.082000
892026-05-290.056000