f/overrides/event-backup/efv-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

835 B

1DateDividends
22025-12-161.609000
32026-06-152.044000
42016-06-221.067000
52019-12-160.930000
62015-12-210.487000
72023-12-200.957000
82009-06-230.898000
92014-06-251.801000
102020-12-140.638000
112022-06-091.379000
122008-12-230.402000
132016-12-210.480000
142012-06-211.255000
152017-06-201.182000
162018-06-191.426000
172024-12-170.912000
182009-12-220.595000
192010-12-210.688000
202013-12-180.711000
212014-12-170.686000
222023-06-071.316000
232024-06-111.536000
242025-06-161.363000
252008-06-251.505000
262010-06-230.954000
272021-12-300.106000
282011-06-221.222000
292015-06-251.184000
302012-12-180.577000
312013-06-271.111000
322019-06-171.377000
332020-06-150.505000
342021-12-131.068000
352022-12-130.536000
362005-12-230.254000
372006-12-211.192000
382017-12-190.784000
392018-12-180.635000
402021-06-100.878000
412007-12-203.247000
422011-12-200.710000