f/overrides/event-backup/eems-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

655 B

1DateDividends
22012-06-210.690000
32014-06-250.276000
42023-06-070.331000
52022-06-090.034000
62025-12-161.661000
72026-06-150.478000
82011-12-200.453000
92013-06-270.287000
102018-06-190.489000
112017-12-190.983000
122021-12-300.050000
132019-06-170.345000
142020-06-150.285000
152012-12-181.569000
162013-12-180.737000
172015-12-210.584000
182015-06-250.368000
192022-12-130.397000
202023-12-201.225000
212016-12-210.554000
222017-06-200.331000
232021-12-131.709000
242020-12-300.047000
252021-06-100.384000
262024-06-110.254000
272024-12-171.257000
282014-12-170.925000
292016-06-220.462000
302019-12-160.851000
312018-12-180.792000
322020-12-140.796000
332025-06-160.422000