f/overrides/event-backup/domix-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
22025-06-110.044000
32007-12-120.179000
42008-11-250.018000
52020-12-160.043000
62024-12-180.127000
72018-06-200.022000
82018-12-190.343000
92021-12-150.031000
102009-06-100.080000
112011-06-220.019000
122012-06-200.096000
132013-06-190.059000
142015-06-170.021000
152023-12-130.033000
162026-06-170.052000
172008-06-110.131000
182017-06-140.023000
192022-12-140.064000
202024-06-120.144000
212015-12-160.212000
222017-12-200.202000
232016-12-210.097000
242022-06-150.075000
252007-06-130.135000
262010-06-230.037000
272014-12-170.521000
282016-06-150.041000
292013-12-180.403000
302019-12-180.211000
312021-06-160.079000
322023-06-210.138000
332009-12-090.075000
342010-03-180.023000
352010-12-220.098000
362011-12-210.396000
372025-12-170.181000