f/overrides/event-backup/flszx-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

795 B

1DateDividends
22024-12-300.205000
32022-12-290.032000
42024-09-300.047000
52026-06-150.533000
62015-09-280.015000
72017-03-290.029000
82019-12-300.062000
92021-06-280.256000
102021-09-280.052000
112019-03-270.004000
122020-12-300.106000
132022-06-150.334000
142016-12-290.112000
152018-12-280.197000
162021-03-290.008000
172023-12-280.040000
182024-06-280.045000
192021-12-302.241000
202023-06-300.065000
212018-06-270.128000
222018-09-260.073000
232019-06-260.156000
242020-06-260.132000
252020-09-280.039000
262015-06-260.005000
272016-06-280.059000
282017-12-280.219000
292020-03-270.047000
302024-03-280.083000
312023-09-290.054000
322025-06-160.553000
332025-12-300.383000
342016-03-290.011000
352022-06-300.030000
362022-09-300.032000
372023-03-310.045000
382023-06-150.084000
392015-12-300.107000
402019-09-260.030000