f/overrides/event-backup/mresx-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

2.2 KiB

1DateDividends
22012-12-260.283000
32016-06-270.027000
42020-03-270.067000
52017-12-271.022000
62019-12-160.534000
72012-09-250.018000
82023-06-280.070000
92011-12-270.010000
102021-09-280.048000
112005-01-130.096000
122005-03-280.030000
132005-06-270.080000
142024-06-260.083000
152025-03-270.062000
162025-06-260.091000
172003-09-300.110000
182006-06-270.010000
192010-09-270.010000
202018-09-260.048000
212021-12-150.410000
222009-09-250.020000
232017-09-260.025000
242025-09-260.076000
252000-12-290.120000
262001-03-300.050000
272004-09-300.150000
282020-06-260.047000
292006-03-280.010000
302006-09-260.015000
312011-03-280.010000
322015-12-281.172000
332018-03-270.049000
341999-12-290.140000
352009-06-250.025000
362010-04-300.011000
372000-06-300.128000
382007-09-250.025000
392012-06-260.017000
402000-09-290.086000
412003-03-310.160000
422005-09-270.140000
432024-03-270.052000
441998-10-270.140000
452015-09-250.056000
462022-12-280.045000
472026-06-250.090000
482002-09-300.160000
492012-03-270.035000
502025-12-290.014000
512013-03-250.023000
522014-09-250.020000
532008-06-250.020000
542023-03-290.038000
552001-09-280.050000
562010-06-250.010000
572008-03-260.036000
582008-12-260.079000
592010-03-260.015000
602004-03-310.100000
612006-12-262.330000
622007-03-270.057000
632019-03-270.049000
642020-12-160.058000
652019-06-260.051000
662015-03-260.042000
672018-12-270.132000
682024-12-270.063000
692026-03-260.075000
702008-09-250.020000
712009-12-280.039000
722013-06-250.023000
732011-06-270.010000
742021-06-280.050000
752022-12-060.460000
761999-03-310.120000
772002-03-280.036000
782013-12-260.657000
792010-12-280.031000
802020-09-280.045000
811998-12-310.070000
822002-12-200.160000
832007-12-263.003000
842002-06-280.090000
852014-03-260.030000
861999-06-300.120000
871999-09-300.100000
882009-03-260.025000
892000-03-310.094000
902013-09-250.023000
912001-12-310.100000
922003-06-300.160000
932005-12-270.061000
942023-12-270.053000
951998-12-150.069000
962007-06-260.040000
972019-09-260.054000
982016-12-271.137000
992022-03-290.032000
1002022-06-280.043000
1012024-09-260.075000
1022014-06-250.030000
1032014-12-260.458000
1042015-06-250.042000
1052016-03-280.056000
1062017-06-270.018000
1072018-06-270.066000
1082004-06-300.050000
1092011-09-270.013000
1102016-09-270.027000
1112021-03-290.043000
1122023-09-270.052000
1132001-06-290.140000