f/overrides/event-backup/drilx-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

855 B

1DateDividends
22018-09-270.062000
32019-12-170.101000
42021-09-290.072000
52022-03-300.039000
62024-06-270.100000
72025-12-150.191000
82015-12-160.054000
92021-06-290.077000
102022-06-290.086000
112023-12-130.336000
122024-09-270.091000
132016-06-290.056000
142017-06-290.070000
152021-12-150.187000
162025-09-290.101000
172026-06-290.117000
182016-09-290.020000
192018-06-280.077000
202019-06-270.085000
212021-03-300.041000
222017-03-300.034000
232023-09-280.082000
242025-03-280.048000
252025-06-270.110000
262026-03-300.054000
272020-09-290.056000
282017-12-150.127000
292019-03-280.038000
302019-09-270.063000
312020-03-300.047000
322022-12-140.367000
332016-03-300.047000
342020-06-290.062000
352023-03-300.042000
362023-06-290.099000
372024-03-270.044000
382024-12-130.235000
392018-03-280.018000
402018-12-180.093000
412020-12-160.154000
422022-09-290.088000
432016-12-150.080000