f/overrides/event-backup/icln-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
22009-06-220.122000
32012-12-270.037000
42014-06-240.098000
52019-12-160.082000
62023-06-070.125000
72024-06-110.096000
82014-12-190.176000
92016-12-220.145000
102018-06-190.124000
112019-06-170.078000
122021-12-300.012000
132026-06-150.056000
142015-06-240.156000
152017-06-200.143000
162020-06-150.053000
172020-12-300.014000
182025-12-160.128000
192011-12-190.228000
202013-12-170.123000
212020-12-140.030000
222022-12-130.036000
232023-12-200.123000
242010-06-210.154000
252012-12-170.087000
262013-06-250.097000
272017-12-210.089000
282024-12-170.114000
292010-12-200.109000
302011-06-210.173000
312012-06-200.152000
322021-06-100.124000
332025-06-160.140000
342021-12-130.114000
352022-06-090.140000
362009-12-210.169000
372010-12-290.037000
382015-12-210.076000
392016-06-210.161000
402018-12-180.105000