f/overrides/event-backup/ftlmx-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

955 B

1DateDividends
22014-12-300.680000
32017-09-270.108000
42019-09-260.066000
52021-12-301.388000
62022-06-300.064000
72023-06-150.006000
82024-09-300.079000
92014-06-260.243000
102015-06-260.207000
112016-12-290.061000
122018-09-260.069000
132020-12-300.129000
142026-06-150.312000
152016-09-280.093000
162017-03-290.050000
172018-12-280.489000
182017-12-280.111000
192019-03-270.048000
202019-06-260.164000
212020-03-270.033000
222023-12-280.083000
232024-12-300.225000
242021-03-290.019000
252022-03-310.017000
262025-06-160.403000
272025-12-300.798000
282024-03-280.085000
292014-09-260.043000
302016-06-280.146000
312019-12-300.228000
322020-06-260.285000
332020-09-280.054000
342021-06-280.244000
352022-06-150.288000
362023-09-290.077000
372015-03-270.008000
382015-09-280.091000
392015-12-300.411000
402016-03-290.014000
412022-09-300.058000
422023-03-310.114000
432023-06-300.081000
442018-03-270.050000
452018-06-270.187000
462021-09-280.058000
472022-12-290.044000
482024-06-280.087000