f/overrides/event-backup/esgg-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
22018-06-180.690000
32021-12-170.627000
42022-03-180.349000
52023-09-150.459000
62025-06-201.143000
72023-06-161.063000
82017-09-180.355000
92019-03-150.457000
102019-09-200.386000
112019-12-200.484000
122021-03-190.318000
132021-09-170.409000
142022-09-160.480000
152019-06-210.769000
162022-06-170.997000
172024-03-150.271000
182024-06-211.245000
192026-06-181.296000
202016-09-190.233000
212017-06-190.675000
222017-12-210.291000
232023-12-150.762000
242025-12-190.888000
252025-09-190.477000
262017-03-200.300000
272018-09-240.409000
282020-12-180.450000
292021-06-180.683000
302023-03-170.302000
312024-12-201.054000
322025-03-210.337000
332018-12-210.400000
342018-03-190.307000
352020-03-200.382000
362020-06-190.489000
372026-03-200.343000
382016-12-220.447000
392020-09-180.376000
402022-12-160.393000
412024-09-200.521000