f/overrides/event-backup/evcgx-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

595 B

1DateDividends
21996-12-310.110000
32003-12-170.028000
42007-12-241.956000
52013-12-190.070000
62015-12-171.132000
72022-12-081.076000
82024-12-050.309000
91994-12-190.055000
102002-06-240.049000
112010-12-292.693000
122021-12-091.314000
132023-12-071.139000
142002-10-220.041000
152005-12-210.117000
162008-12-302.932000
172011-12-281.429000
182017-12-142.875000
192004-12-270.029000
202006-12-270.030000
212009-12-300.376000
222015-05-210.060000
232019-12-120.791000
241996-12-160.400000
252012-12-200.109000
262016-12-150.179000
272025-12-040.283000
281997-08-281.430000
292018-12-132.058000
302020-12-102.778000