f/overrides/event-backup/dfuex-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

1.4 KiB

1DateDividends
22014-03-100.028000
32015-06-080.044000
42015-12-160.285000
52017-12-150.272000
62014-09-090.047000
72017-09-280.056000
82019-03-280.056000
92023-12-110.222000
102025-06-270.075000
112008-09-090.030000
122015-03-090.044000
132021-03-300.058000
142025-12-100.063000
152011-12-130.046000
162016-03-300.055000
172020-03-300.045000
182020-12-140.074000
192024-12-100.062000
202014-12-160.312000
212017-03-300.048000
222021-09-290.075000
232024-03-270.067000
242008-03-100.030000
252009-09-090.017000
262010-09-080.028000
272012-03-080.015000
282012-06-080.039000
292014-06-090.048000
302020-06-290.061000
312024-09-270.069000
322016-06-290.050000
332018-06-280.055000
342022-03-300.067000
352023-03-300.065000
362023-06-290.069000
372013-09-100.042000
382021-06-290.063000
392026-03-300.067000
402009-03-100.017000
412016-12-150.193000
422018-03-280.022000
432019-12-160.457000
442013-06-100.040000
452011-06-080.023000
462021-12-130.964000
472022-09-290.072000
482008-06-100.031000
492009-12-090.032000
502018-09-270.062000
512019-09-270.061000
522026-06-290.081000
532007-12-190.028000
542019-06-270.064000
552022-06-290.070000
562024-06-270.070000
572011-03-080.017000
582011-09-080.026000
592012-09-100.033000
602017-06-290.052000
612018-12-180.311000
622020-09-290.058000
632023-09-280.067000
642025-09-290.072000
652009-06-090.021000
662012-12-130.162000
672013-03-080.022000
682013-12-120.278000
692016-09-290.045000
702022-12-120.678000
712025-03-280.073000
722008-12-100.053000
732010-12-090.038000
742015-09-090.048000