f/overrides/event-backup/igf-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
22012-06-200.682000
32013-06-250.843000
42013-12-170.502000
52008-06-230.374000
62009-12-210.601000
72019-12-160.781000
82021-12-130.474000
92025-06-160.983000
102008-12-220.554000
112015-12-210.637000
122011-06-210.614000
132014-06-240.621000
142016-12-220.534000
152021-06-100.678000
162022-06-090.705000
172025-12-160.996000
182009-06-220.542000
192010-06-210.541000
202016-06-210.632000
212015-06-240.529000
222017-06-200.736000
232024-12-170.849000
242010-12-200.755000
252012-12-170.783000
262024-06-110.830000
272011-12-190.832000
282022-12-130.518000
292017-12-210.600000
302018-06-190.696000
312018-12-180.692000
322019-06-170.787000
332020-12-140.579000
342023-06-070.675000
352007-12-240.180000
362014-12-190.643000
372023-12-200.907000
382020-06-150.439000
392026-06-150.934000