f/overrides/event-backup/imtb-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

2.3 KiB

1DateDividends
22022-04-010.085000
32023-08-010.147000
42017-11-010.128000
52018-03-010.130000
62026-08-030.165000
72019-09-030.128000
82024-06-030.147000
92022-03-010.077000
102024-03-010.151000
112025-12-010.163000
122017-09-010.131000
132019-08-010.128000
142023-09-010.150000
152024-05-010.155000
162016-12-220.103000
172018-04-020.125000
182019-04-010.130000
192019-11-010.120000
202021-06-010.075000
212021-11-010.077000
222016-12-010.091000
232018-12-030.139000
242017-12-010.129000
252023-04-030.144000
262025-06-020.162000
272019-03-010.132000
282020-12-170.232000
292021-08-020.066000
302022-07-010.125000
312017-02-010.099000
322019-12-020.115000
332018-12-180.125000
342026-04-010.162000
352017-07-030.130000
362018-09-040.108000
372021-03-010.085000
382023-02-010.138000
392023-07-030.148000
402025-09-020.165000
412020-05-010.110000
422020-07-010.103000
432018-10-010.119000
442025-07-010.163000
452017-06-010.133000
462022-08-010.117000
472024-02-010.153000
482024-08-010.159000
492025-12-190.162000
502017-05-010.129000
512020-04-010.118000
522025-05-010.154000
532023-10-020.156000
542025-02-030.165000
552017-10-020.130000
562021-05-030.069000
572025-03-030.154000
582020-03-020.119000
592022-10-030.113000
602019-02-010.126000
612019-10-010.122000
622021-09-010.069000
632022-02-010.080000
642026-02-020.165000
652026-07-010.163000
662018-11-010.131000
672021-02-010.094000
682024-12-180.159000
692022-12-010.112000
702022-12-150.128000
712023-12-010.168000
722024-10-010.160000
732018-06-010.117000
742020-02-030.116000
752021-07-010.068000
762025-08-010.168000
772022-09-010.108000
782026-03-020.158000
792020-09-010.090000
802021-04-010.077000
812022-11-010.112000
822024-12-020.168000
832025-11-030.165000
842026-06-010.165000
852019-12-190.084000
862021-12-160.033000
872020-11-020.097000
882026-05-010.163000
892019-07-010.131000
902020-10-010.096000
912021-12-010.461000
922023-03-010.138000
932023-06-010.153000
942023-12-140.147000
952025-04-010.158000
962019-05-010.125000
972020-12-010.104000
982022-05-020.089000
992018-08-010.099000
1002020-06-010.100000
1012017-08-010.132000
1022018-07-020.110000
1032025-10-010.163000
1042017-03-010.109000
1052018-02-010.127000
1062023-05-010.148000
1072024-07-010.159000
1082019-06-030.132000
1092022-06-010.093000
1102023-11-010.160000
1112024-11-010.155000
1122021-10-010.079000
1132024-04-010.156000
1142024-09-030.157000
1152017-04-030.118000
1162018-05-010.130000
1172020-08-030.094000