f/overrides/event-backup/avedx-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
22020-03-310.050000
32021-09-300.045000
42010-03-310.054000
52006-03-310.020000
62012-03-300.047000
72014-06-300.043000
82017-03-310.041000
92017-09-290.051000
102019-12-301.335000
112021-03-310.051000
122005-06-300.020000
132023-03-310.055000
142022-06-300.093000
152011-12-290.286000
162020-06-300.060000
172021-12-302.165000
182025-03-310.048000
192010-06-300.034000
202009-03-310.037000
212024-09-300.065000
222006-06-300.030000
232022-12-291.320000
242025-06-300.051000
252016-12-290.994000
262012-09-280.051000
272015-03-310.061000
282019-09-300.063000
292026-03-310.049000
302012-06-290.050000
312019-06-280.063000
322021-06-300.047000
332025-09-300.046000
342026-06-300.059000
352011-09-300.042000
362013-03-280.023000
372014-09-300.048000
382015-06-300.048000
392018-06-290.054000
402009-09-300.026000
412008-09-300.031000
422016-09-300.061000
432018-03-290.057000
442024-06-280.058000
452007-03-290.034000
462007-09-280.035000
472014-12-301.354000
482023-12-280.422000
492025-12-301.041000
502006-12-280.046000
512008-03-310.037000
522008-12-300.043000
532013-06-280.044000
542014-03-310.033000
552016-03-310.064000
562018-12-281.550000
572019-03-290.039000
582007-12-280.048000
592022-03-310.047000
602011-03-310.038000
612012-12-280.786000
622013-09-300.043000
632020-09-300.050000
642020-12-300.343000
652008-06-300.035000
662010-09-300.044000
672013-12-300.368000
682017-06-300.047000
692009-12-300.029000
702007-06-290.040000
712015-12-300.934000
722016-06-300.049000
732018-09-280.062000
742022-09-300.068000
752006-09-290.040000
762017-12-281.026000
772023-09-290.053000
782024-03-280.054000
792024-12-301.286000
802010-12-300.040000
812005-12-290.027000
822009-06-300.039000
832011-06-300.044000
842015-09-300.066000
852023-06-300.062000
862005-09-300.030000