f/overrides/event-backup/eis-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

715 B

1DateDividends
22011-12-200.599000
32014-12-170.457000
42017-06-200.339000
52017-12-190.697000
62013-06-270.497000
72013-12-180.569000
82020-06-150.106000
92021-12-130.693000
102010-06-230.971000
112010-12-210.945000
122012-12-180.534000
132015-06-250.614000
142025-12-161.089000
152023-12-200.260000
162016-12-210.473000
172019-12-161.012000
182021-06-100.118000
192022-06-090.599000
202023-06-070.548000
212012-06-210.504000
222018-06-190.343000
232024-12-170.548000
242025-06-160.492000
252026-06-150.772000
262016-06-220.352000
272022-12-130.331000
282024-06-110.517000
292011-06-220.780000
302018-12-180.077000
312019-06-170.170000
322008-12-230.726000
332009-06-230.256000
342009-12-220.521000
352014-06-250.415000
362015-12-210.640000