f/overrides/event-backup/esgv-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

635 B

1DateDividends
22021-06-180.180000
32021-12-170.262000
42024-09-200.284000
52018-12-260.119000
62020-09-210.193000
72024-06-210.301000
82020-12-180.239000
92022-03-180.178000
102023-12-150.325000
112024-03-150.223000
122019-09-240.199000
132022-09-160.231000
142022-12-160.315000
152023-03-170.193000
162025-06-200.258000
172025-09-190.283000
182019-12-200.227000
192026-03-200.294000
202020-03-100.143000
212023-09-150.262000
222019-03-250.116000
232020-06-220.203000
242021-03-190.156000
252022-06-170.208000
262023-06-160.208000
272024-12-200.289000
282019-06-210.176000
292021-09-170.236000
302025-03-210.267000
312025-12-190.295000
322026-06-180.279000