f/overrides/event-backup/gszux-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

2.6 KiB

1DateDividends
22024-10-300.042000
32024-11-270.042000
42026-04-290.041000
52017-12-280.003000
62020-09-290.038000
72020-12-300.042000
82021-10-280.020000
92023-08-300.033000
102016-03-310.012000
112020-04-290.031000
122020-06-290.036000
132022-09-290.013000
142025-02-270.041000
152017-05-300.015000
162022-06-290.012000
172022-08-300.032000
182015-11-300.031000
192016-02-290.019000
202021-07-290.014000
212024-03-270.038000
222026-03-300.038000
232015-10-300.026000
242018-08-310.028000
252018-09-270.020000
262024-09-270.042000
272025-09-290.039000
282016-05-310.026000
292018-06-280.031000
302024-04-290.035000
312020-02-270.030000
322021-03-300.044000
332023-02-270.033000
342025-07-300.042000
352025-08-280.033000
362024-08-290.049000
372026-02-260.037000
382015-12-310.165000
392019-03-280.026000
402021-04-290.026000
412023-07-280.025000
422023-12-220.024000
432017-04-280.017000
442022-11-290.033000
452026-05-280.030000
462016-04-290.023000
472019-11-270.027000
482021-02-250.030000
492021-11-290.015000
502016-11-300.015000
512018-04-300.024000
522018-11-290.038000
532016-10-310.018000
542019-02-270.026000
552019-04-290.024000
562019-09-270.024000
572016-06-300.020000
582019-05-300.029000
592021-05-270.006000
602025-06-270.022000
612025-10-300.033000
622022-10-280.024000
632023-05-300.033000
642023-09-280.028000
652023-06-290.036000
662025-03-280.036000
672025-11-260.035000
682024-07-300.042000
692024-12-300.049000
702016-01-290.027000
712016-12-300.006000
722017-09-290.007000
732020-03-300.019000
742022-07-280.029000
752023-11-290.037000
762025-04-290.112000
772016-09-300.016000
782017-10-310.008000
792019-06-270.023000
802021-09-290.029000
812024-06-270.156000
822016-07-290.020000
832017-09-280.007000
842022-05-270.026000
852020-07-300.024000
862020-10-290.031000
872023-04-270.029000
882025-12-300.043000
892021-08-300.015000
902022-01-280.013000
912024-05-300.052000
922015-08-310.025000
932017-11-300.005000
942019-08-290.023000
952020-08-280.029000
962020-11-270.031000
972025-01-300.040000
982025-05-290.041000
992026-01-290.031000
1002017-01-310.015000
1012017-07-310.014000
1022018-12-280.032000
1032022-02-250.015000
1042024-01-300.041000
1052017-03-310.004000
1062018-08-300.028000
1072020-05-280.036000
1082026-07-300.051000
1092019-01-300.032000
1102023-01-300.042000
1112023-10-300.032000
1122024-02-280.038000
1132017-08-310.018000
1142018-10-300.023000
1152021-12-300.020000
1162016-08-310.017000
1172021-01-280.028000
1182023-03-300.033000
1192026-06-290.114000
1202015-09-300.024000
1212017-02-280.015000
1222018-05-300.024000
1232019-07-300.030000
1242019-10-300.032000
1252018-07-300.028000
1262022-12-290.032000
1272017-06-300.016000
1282020-01-300.030000
1292022-04-280.013000
1302019-12-300.027000
1312022-03-300.015000