f/overrides/event-backup/dfxix-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

775 B

1DateDividends
22020-09-290.031000
32021-09-290.053000
42022-03-300.039000
52018-06-280.048000
62019-12-170.083000
72020-06-290.019000
82023-09-280.084000
92018-09-270.046000
102021-12-150.119000
112024-03-270.030000
122025-03-280.043000
132018-03-280.016000
142019-09-270.043000
152021-06-290.049000
162023-12-130.109000
172024-06-270.086000
182024-09-270.100000
192017-06-290.045000
202018-12-180.091000
212025-12-150.110000
222017-03-300.034000
232022-06-290.069000
242025-06-270.104000
252017-09-280.025000
262020-12-160.064000
272021-03-300.008000
282022-12-140.070000
292025-09-290.085000
302026-06-290.114000
312017-12-150.079000
322019-06-270.064000
332020-03-300.029000
342022-09-290.065000
352023-03-300.029000
362023-06-290.055000
372024-12-130.123000
382026-03-300.047000
392019-03-280.019000