f/overrides/event-backup/exi-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

815 B

1DateDividends
22014-12-190.479000
32016-06-210.742000
42018-06-191.112000
52019-06-171.101000
62022-06-091.149000
72008-06-230.762000
82008-12-220.540000
92012-12-170.556000
102023-12-200.855000
112012-06-200.703000
122019-12-160.572000
132020-06-150.751000
142020-12-140.736000
152024-06-111.146000
162006-12-210.288000
172009-06-220.538000
182010-12-200.381000
192015-12-210.554000
202017-06-200.823000
212023-06-071.488000
222025-06-161.337000
232021-12-130.632000
242022-12-130.586000
252024-12-170.929000
262009-12-210.250000
272021-12-300.177000
282026-06-151.145000
292015-06-240.767000
302021-06-100.943000
312010-06-210.416000
322013-06-250.648000
332013-12-170.430000
342011-12-190.482000
352018-12-180.611000
362025-12-160.975000
372016-12-220.573000
382017-12-210.548000
392007-12-240.384000
402011-06-210.663000
412014-06-240.879000