f/overrides/event-backup/jffyx-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

895 B

1DateDividends
22016-03-310.042000
32025-12-150.833000
42015-06-300.060000
52016-12-160.184000
62018-09-280.056000
72019-12-161.411000
82021-12-310.735000
92023-12-290.451000
102016-12-300.247000
112017-12-290.302000
122018-03-290.047000
132014-12-310.382000
142016-09-300.067000
152018-12-140.337000
162020-09-300.026000
172021-09-300.011000
182024-12-160.060000
192024-12-310.648000
202015-12-310.281000
212017-06-300.049000
222017-09-290.054000
232018-12-310.425000
242019-09-300.072000
252020-03-310.036000
262022-12-300.397000
272015-03-310.025000
282020-12-150.651000
292021-06-300.044000
302021-03-310.039000
312014-12-170.163000
322016-06-300.064000
332017-12-150.417000
342018-06-290.059000
352019-03-290.043000
362020-06-300.036000
372020-12-310.341000
382021-12-152.628000
392022-12-151.720000
402025-12-310.686000
412015-09-300.030000
422015-12-180.156000
432017-03-310.048000
442019-06-280.056000
452019-12-310.313000