f/overrides/event-backup/avemx-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

415 B

1DateDividends
22005-12-290.409000
32006-12-280.701000
42013-12-301.231000
52021-12-301.885000
62025-12-300.092000
72007-12-280.003000
82012-12-280.570000
92015-12-300.020000
102020-12-300.720000
112022-12-290.276000
122024-12-302.347000
132010-08-310.002000
142010-12-300.007000
152017-12-281.637000
162018-12-281.849000
172004-12-290.690000
182009-12-300.006000
192014-12-301.857000
202019-12-301.036000
212023-12-281.055000