f/overrides/event-backup/fullx-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

1.7 KiB

1DateDividends
22019-12-310.018000
32020-06-300.012000
42021-06-300.006000
52024-02-290.033000
62024-04-300.036000
72026-06-300.034000
82020-03-310.016000
92020-04-300.014000
102020-09-300.010000
112025-02-280.037000
122025-09-300.038000
132026-01-300.036000
142026-05-290.034000
152022-05-310.008000
162022-10-310.015000
172023-01-310.020000
182025-10-310.038000
192020-07-310.011000
202021-05-280.006000
212022-08-310.012000
222023-10-310.030000
232021-02-260.007000
242022-07-290.010000
252024-01-310.033000
262026-07-310.034000
272020-01-310.017000
282021-09-300.006000
292023-06-300.026000
302024-10-310.040000
312019-07-310.021000
322021-08-310.006000
332023-11-300.031000
342024-11-290.039000
352025-12-310.036000
362019-05-310.002000
372021-01-290.008000
382023-03-310.022000
392023-04-280.023000
402024-07-310.040000
412024-09-300.040000
422025-08-290.039000
432025-06-300.038000
442019-09-300.019000
452019-10-310.019000
462020-12-310.008000
472021-03-310.006000
482022-03-310.007000
492024-12-310.040000
502025-04-300.038000
512019-11-290.018000
522021-11-300.006000
532022-06-300.008000
542023-08-310.028000
552024-03-280.034000
562024-05-310.038000
572020-02-280.016000
582020-08-310.010000
592020-10-300.010000
602020-11-300.009000
612023-02-280.020000
622024-06-280.038000
632025-07-310.039000
642025-03-310.038000
652025-05-300.039000
662019-06-280.020000
672022-01-310.006000
682022-11-300.018000
692021-12-310.006000
702022-04-290.007000
712022-12-300.019000
722023-07-310.028000
732023-09-290.027000
742024-08-300.041000
752026-03-310.035000
762020-05-290.013000
772021-07-300.006000
782021-10-290.006000
792026-02-270.034000
802026-04-300.034000
812025-11-280.037000
822019-08-300.020000
832021-04-300.007000
842022-02-280.006000
852022-09-300.013000
862023-05-310.025000
872023-12-290.033000
882025-01-310.039000