f/overrides/event-backup/dfvex-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

1.6 KiB

1DateDividends
22008-12-100.063000
32018-09-270.068000
42019-09-270.065000
52007-12-190.053000
62009-12-090.035000
72014-12-160.606000
82019-06-270.067000
92022-06-290.087000
102007-06-080.035000
112008-03-100.026000
122010-09-080.031000
132020-09-290.059000
142022-03-300.066000
152007-09-100.037000
162013-09-100.044000
172015-09-090.060000
182010-06-080.019000
192012-03-080.012000
202012-12-130.108000
212015-03-090.044000
222023-06-290.088000
232024-06-270.092000
242009-09-090.022000
252014-09-090.052000
262016-03-300.064000
272018-06-280.061000
282021-06-290.071000
292022-12-140.813000
302025-03-280.087000
312011-06-080.026000
322016-06-290.059000
332017-03-300.052000
342017-09-280.064000
352020-06-290.065000
362024-09-270.091000
372008-09-090.040000
382011-03-080.012000
392012-06-080.047000
402019-03-280.060000
412019-12-170.392000
422023-12-130.554000
432013-03-080.019000
442013-12-120.278000
452015-06-080.058000
462018-12-180.499000
472020-03-300.068000
482023-03-300.083000
492008-06-100.036000
502010-03-090.012000
512010-12-090.051000
522011-09-080.029000
532012-09-100.036000
542006-09-080.024000
552009-03-100.021000
562015-12-160.604000
572025-12-150.082000
582006-12-180.224000
592016-09-290.056000
602017-12-150.763000
612025-06-270.097000
622025-09-290.099000
632006-03-080.015000
642009-06-090.024000
652011-12-130.056000
662014-03-100.029000
672017-06-290.057000
682022-09-290.089000
692026-03-300.090000
702016-12-150.484000
712020-12-160.072000
722021-09-290.088000
732023-09-280.083000
742024-03-270.083000
752024-12-130.077000
762006-06-080.029000
772007-03-080.020000
782014-06-090.053000
792018-03-280.028000
802021-03-300.064000
812026-06-290.107000
822013-06-100.044000
832021-12-151.708000