f/overrides/event-backup/emlnx-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

2.8 KiB

1DateDividends
22022-10-310.017000
32023-04-280.025000
42025-12-310.041000
52017-11-300.032000
62022-02-280.023000
72023-06-300.023000
82026-06-300.024000
92015-02-270.040000
102019-03-290.029000
112018-04-300.034000
122023-05-310.023000
132019-02-280.029000
142021-10-290.023000
152025-05-300.020000
162015-09-300.027000
172018-11-300.026000
182024-03-280.025000
192024-05-310.026000
202020-02-280.028000
212023-08-310.021000
222017-09-290.028000
232021-09-300.023000
242023-09-290.021000
252015-05-290.037000
262016-09-300.026000
272024-08-300.027000
282026-07-310.024000
292017-05-310.026000
302021-12-310.023000
312021-01-290.023000
322024-02-290.026000
332014-12-310.041000
342018-06-290.032000
352020-06-300.023000
362026-03-310.022000
372015-11-300.025000
382019-08-300.029000
392023-02-280.017000
402016-02-290.024000
412020-10-300.023000
422020-05-290.024000
432024-09-300.027000
442019-06-280.029000
452019-11-290.028000
462025-11-280.017000
472023-10-310.029000
482025-08-290.007000
492018-09-280.027000
502024-06-280.027000
512025-01-310.026000
522017-01-310.026000
532017-08-310.026000
542018-03-290.034000
552020-03-310.028000
562021-04-300.026000
572021-05-280.023000
582016-05-310.026000
592016-10-310.026000
602015-08-310.034000
612015-10-300.024000
622017-12-290.032000
632020-12-310.023000
642022-01-310.023000
652022-03-310.026000
662014-11-280.041000
672015-01-300.040000
682023-12-290.029000
692024-11-290.026000
702019-07-310.029000
712024-01-310.026000
722024-10-310.026000
732025-02-280.027000
742026-01-300.022000
752015-03-310.038000
762016-06-300.026000
772022-05-310.026000
782022-07-290.025000
792024-04-300.025000
802018-05-310.034000
812020-01-310.028000
822018-08-310.029000
832019-05-310.029000
842020-08-310.023000
852022-11-300.016000
862025-07-310.007000
872016-08-310.026000
882018-07-310.030000
892019-04-300.029000
902020-07-310.023000
912022-06-300.026000
922026-04-300.022000
932014-10-310.042000
942015-12-310.025000
952016-04-290.026000
962022-12-300.017000
972026-02-270.022000
982021-06-300.023000
992022-04-290.026000
1002022-08-310.022000
1012025-04-300.022000
1022019-12-310.028000
1032021-02-260.025000
1042025-03-310.025000
1052015-04-300.038000
1062023-03-310.017000
1072021-08-310.023000
1082023-07-310.020000
1092018-12-310.026000
1102019-01-310.027000
1112020-04-300.027000
1122016-01-290.025000
1132018-10-310.026000
1142018-02-280.034000
1152021-07-300.023000
1162022-09-300.013000
1172026-05-290.024000
1182015-07-310.034000
1192017-06-300.026000
1202017-10-310.030000
1212018-01-310.032000
1222015-06-300.037000
1232017-04-280.026000
1242021-03-310.026000
1252023-11-300.029000
1262024-12-310.026000
1272025-09-300.007000
1282025-10-310.012000
1292020-09-300.023000
1302020-11-300.023000
1312017-02-280.026000
1322016-03-310.026000
1332016-11-300.026000
1342025-06-300.007000
1352017-03-310.026000
1362023-01-310.017000
1372017-07-310.026000
1382019-09-300.028000
1392019-10-310.028000
1402021-11-300.023000
1412024-07-310.027000
1422016-07-290.026000
1432016-12-300.026000