f/overrides/event-backup/mlxix-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

2.7 KiB

1DateDividends
22025-03-280.123000
32021-04-290.112000
42023-11-290.118000
52024-09-270.120000
62020-04-290.109000
72020-11-270.109000
82023-02-270.116000
92017-10-300.275000
102017-11-290.275000
112019-08-290.270000
122025-10-300.124000
132016-03-300.270000
142016-12-290.275000
152021-02-250.111000
162025-02-270.123000
172025-05-290.124000
182025-08-280.122000
192025-12-300.122000
202026-03-300.124000
212022-12-290.118000
222023-09-280.116000
232024-07-300.121000
242026-05-280.125000
252022-11-290.117000
262024-04-290.120000
272025-04-290.122000
282016-07-280.270000
292017-08-300.275000
302018-01-300.275000
312023-08-300.119000
322024-12-300.125000
332017-12-280.270000
342019-09-270.265000
352022-10-280.115000
362020-03-300.111000
372020-05-280.110000
382023-05-300.116000
392015-05-280.275000
402016-08-300.280000
412020-01-300.265000
422020-10-290.110000
432021-07-290.114000
442021-09-290.114000
452015-03-300.290000
462019-11-270.265000
472020-02-270.265000
482023-03-300.117000
492024-01-300.115000
502024-03-270.117000
512017-01-300.280000
522019-04-290.270000
532021-01-280.111000
542021-11-290.115000
552016-05-270.270000
562018-03-280.270000
572019-07-300.270000
582026-07-300.129000
592015-10-290.280000
602020-09-290.110000
612023-06-290.118000
622020-03-250.200000
632026-04-290.127000
642025-11-260.119000
652016-04-280.270000
662018-05-300.275000
672020-12-300.113000
682020-08-280.110000
692018-10-300.275000
702022-08-300.117000
712023-01-300.116000
722024-02-280.118000
732025-12-150.784000
742015-06-290.285000
752017-05-300.275000
762018-04-270.270000
772021-03-300.114000
782022-04-280.116000
792022-07-280.114000
802023-12-280.117000
812024-10-300.124000
822017-07-280.270000
832018-08-300.275000
842018-09-270.270000
852025-07-300.126000
862017-04-270.275000
872025-06-270.122000
882019-02-270.270000
892022-01-280.114000
902015-09-290.285000
912022-02-250.114000
922021-10-280.114000
932023-07-280.116000
942015-04-290.275000
952015-12-300.270000
962016-06-290.275000
972024-11-270.122000
982016-02-260.265000
992019-03-280.270000
1002022-09-290.118000
1012021-05-270.113000
1022023-04-270.115000
1032026-01-290.119000
1042015-11-270.275000
1052016-11-290.275000
1062019-05-300.270000
1072026-02-260.121000
1082026-06-290.126000
1092017-02-270.275000
1102024-06-270.119000
1112024-08-290.122000
1122018-11-290.270000
1132019-10-300.270000
1142022-03-300.117000
1152025-01-300.123000
1162015-08-280.280000
1172016-09-290.275000
1182018-07-300.270000
1192017-09-280.275000
1202020-06-290.111000
1212020-07-300.111000
1222021-12-300.115000
1232024-05-300.121000
1242015-02-260.095000
1252015-07-300.290000
1262016-01-280.265000
1272017-03-300.280000
1282025-09-290.123000
1292022-06-290.118000
1302023-10-300.116000
1312018-02-270.270000
1322019-06-270.265000
1332022-05-270.116000
1342017-06-290.275000
1352021-06-290.116000
1362018-06-280.270000
1372021-08-300.113000
1382019-12-300.270000
1392016-10-280.275000
1402018-12-280.270000
1412019-01-300.270000