f/overrides/event-backup/ieus-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

795 B

1DateDividends
22009-06-220.376000
32011-06-210.471000
42016-06-220.800000
52018-06-190.920000
62023-12-200.610000
72024-12-170.549000
82010-06-210.318000
92017-06-200.648000
102019-06-171.675000
112024-06-111.194000
122025-06-161.377000
132014-06-240.428000
142020-12-140.367000
152021-12-130.914000
162008-12-220.286000
172022-06-091.169000
182019-12-160.574000
192021-12-300.131000
202009-12-210.389000
212011-12-190.483000
222012-12-170.611000
232014-12-190.563000
242016-12-210.286000
252017-12-190.582000
262025-12-160.812000
272023-06-071.057000
282026-06-151.443000
292010-12-200.630000
302012-06-200.697000
312013-06-250.542000
322018-12-180.520000
332020-06-150.384000
342021-06-100.785000
352007-12-240.095000
362008-06-230.698000
372013-12-170.578000
382015-06-240.520000
392015-12-210.414000
402022-12-130.313000