f/overrides/event-backup/dspix-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
22002-06-280.001000
32010-05-040.100000
42000-11-030.080000
52015-05-040.199000
62003-12-090.103000
72012-12-270.185000
82020-12-242.396000
92008-08-040.159000
102018-08-020.238000
112006-05-020.106000
121994-11-020.065000
131995-12-260.065000
142001-05-040.062000
152017-05-020.201000
162022-05-030.231000
171993-11-020.010000
182002-08-020.072000
192009-03-260.012000
202012-05-020.123000
212013-12-270.192000
222017-08-020.230000
232019-12-262.245000
241997-12-230.323000
251998-05-060.101000
262006-11-020.121000
272016-11-020.212000
282020-04-020.037000
291996-12-270.250000
302015-08-040.201000
312018-12-262.325000
322002-05-030.067000
332008-11-040.119000
342013-11-040.157000
352014-08-040.182000
362014-11-040.181000
372018-11-020.246000
382023-11-020.222000
392025-05-020.169000
401998-12-220.230000
412007-11-020.144000
422015-12-290.492000
432026-08-040.129000
442007-05-020.127000
452000-05-310.070000
462007-12-270.159000
472008-05-020.136000
482021-12-229.179000
491997-05-060.080000
502016-08-020.202000
512016-12-280.684000
522021-11-020.239000
532026-05-040.122000
542009-08-040.102000
552010-12-290.108000
562001-12-060.085000
572005-12-280.125000
582009-11-030.120000
592011-08-020.117000
602013-08-020.153000
611997-11-050.080000
622021-08-030.238000
632023-08-020.220000
642023-12-2113.665000
652005-11-020.104000
662004-08-030.073000
672005-08-020.104000
682010-08-030.105000
692010-11-020.123000
702011-05-030.118000
712001-11-020.073000
722011-12-280.015000
732024-11-040.190000
742003-11-040.085000
752005-05-030.081000
762017-11-020.237000
772017-12-270.685000
782025-11-040.152000
792002-11-050.062000
802019-11-040.261000
811999-05-050.080000
822001-08-020.070000
832003-08-040.072000
842016-05-030.214000
852020-11-030.234000
862024-12-2313.734000
872025-12-2314.713000
881995-05-020.078000
892006-12-270.143000
901993-12-220.010000
911998-11-090.080000
922014-12-290.187000
932024-05-020.192000
941996-05-030.075000
952014-05-020.167000
962020-05-040.265000
972020-08-040.240000
981997-08-050.080000
992018-05-020.232000
1002021-05-040.241000
1012024-08-020.190000
1022025-08-040.157000
1031994-08-020.066000
1041996-08-020.095000
1052011-11-020.115000
1062015-11-030.204000
1072019-05-020.253000
1082022-08-020.250000
1091994-05-030.074000
1102002-10-310.001000
1111996-11-040.060000
1122002-12-090.085000
1132007-08-020.133000
1142013-05-020.144000
1151995-11-030.065000
1162004-05-040.073000
1172006-08-020.129000
1182012-08-020.139000
1192019-08-020.246000
1201999-12-200.314000
1212009-05-040.115000
1222009-12-290.096000
1232000-08-040.070000
1241999-11-050.060000
1252004-11-020.071000
1262004-12-280.223000
1271995-08-030.066000
1281999-08-050.050000
1292003-05-020.065000
1302022-11-020.237000
1312022-12-228.983000
1322023-05-020.230000
1331998-08-060.090000
1342000-12-270.120000
1352008-12-290.439000
1362012-11-020.136000
1371994-12-220.047000