f/overrides/event-backup/eido-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

735 B

1DateDividends
22012-06-210.275000
32016-12-210.025000
42011-06-220.175000
52013-12-180.072000
62018-12-180.047000
72019-12-160.046000
82020-12-140.172000
92022-12-130.232000
102010-12-210.064000
112010-12-290.010000
122023-12-200.176000
132017-12-190.030000
142018-06-190.446000
152023-06-070.481000
162024-06-110.665000
172024-12-170.239000
182024-12-300.059000
192011-12-200.180000
202012-12-180.074000
212026-06-150.228000
222017-06-200.329000
232021-12-130.163000
242014-06-250.286000
252016-06-220.253000
262015-06-250.308000
272015-12-210.039000
282025-06-160.485000
292013-06-270.392000
302014-12-170.076000
312025-12-300.019000
322019-06-170.411000
332022-06-090.335000
342021-06-100.142000
352025-12-160.162000
362010-06-230.078000
372020-06-150.182000