f/overrides/event-backup/ixg-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

935 B

1DateDividends
22022-12-131.068000
32011-12-190.468000
42012-06-200.717000
52013-12-170.486000
62014-12-190.529000
72020-12-140.604000
82021-12-300.035000
92022-06-091.537000
102023-06-071.132000
112023-12-200.928000
122026-06-151.763000
132005-12-231.196000
142009-12-210.384000
152018-06-191.146000
162020-06-150.784000
172021-06-100.280000
182010-06-210.566000
192015-12-210.669000
202024-06-111.460000
212024-12-171.074000
222003-12-160.143000
232008-06-231.356000
242017-06-200.828000
252018-12-180.638000
262019-06-171.152000
272002-12-230.571000
282007-12-242.780000
292009-06-220.449000
302012-12-170.417000
312014-06-240.813000
322001-12-240.043000
332008-12-220.659000
342016-06-210.867000
352025-12-161.069000
362013-06-250.719000
372017-12-210.652000
382025-06-161.398000
392019-12-160.819000
402003-12-221.311000
412004-12-230.895000
422006-12-211.212000
432010-12-200.407000
442011-06-210.743000
452015-06-240.808000
462016-12-220.408000
472021-12-131.034000