f/overrides/event-backup/iqdg-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
22018-06-250.189000
32025-09-250.140000
42021-09-240.455000
52022-09-260.250000
62023-03-270.185000
72023-06-260.270000
82018-03-200.039000
92019-06-240.265000
102020-06-230.160000
112020-09-220.135000
122025-06-250.495000
132024-09-250.095000
142024-12-260.186000
152024-12-310.077000
162025-03-260.070000
172016-06-200.185000
182017-03-270.150000
192020-03-240.118000
202021-12-270.099000
212024-06-250.320000
222017-06-260.185000
232018-12-240.163000
242021-03-250.321000
252022-03-250.335000
262019-09-240.140000
272026-06-250.610000
282017-09-260.090000
292024-03-220.210000
302018-09-250.102000
312019-03-260.060000
322021-06-240.190000
332025-12-260.242000
342020-12-210.190000
352022-06-240.605000
362022-12-230.091000
372023-09-250.070000
382016-09-260.075000
392016-12-230.063000
402017-12-260.099000
412019-12-230.157000
422023-12-220.115000
432026-03-260.040000