f/overrides/event-backup/acwi-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

775 B

1DateDividends
22014-12-170.488000
32015-12-290.035000
42017-12-190.669000
52014-06-250.836000
62016-06-220.744000
72019-06-170.906000
82023-12-200.962000
92026-06-151.010000
102009-06-230.266000
112013-06-270.633000
122015-12-210.677000
132022-12-130.676000
142015-06-250.718000
152018-06-190.802000
162018-12-280.044000
172022-06-090.847000
182025-06-160.961000
192018-12-180.598000
202021-12-131.017000
212024-12-171.066000
222010-12-210.448000
232013-12-180.458000
242020-06-150.614000
252024-06-110.935000
262021-12-300.071000
272025-12-161.235000
282010-06-230.362000
292011-06-220.562000
302012-12-180.476000
312017-06-200.732000
322019-12-160.943000
332021-06-100.724000
342009-12-220.280000
352011-12-200.451000
362012-06-210.604000
372016-12-210.553000
382020-12-140.686000
392023-06-070.953000