f/overrides/event-backup/msfax-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

1.1 KiB

1DateDividendsctime
22007-12-202.662019-09-23 16:04:14
32010-04-300.0442019-09-23 16:04:14
42009-12-180.0312019-09-23 16:04:14
52011-12-160.4032019-09-23 16:04:14
62003-12-260.0362019-09-23 16:04:14
72005-12-230.3062019-09-23 16:04:14
82013-12-160.8132019-09-23 16:04:14
92017-07-070.0312019-09-23 16:04:14
102013-07-020.0792019-09-23 16:04:14
112011-07-070.0732019-09-23 16:04:14
122015-07-020.1782019-09-23 16:04:14
132007-07-030.4022019-09-23 16:04:14
142009-07-020.152019-09-23 16:04:14
152015-12-161.0922019-09-23 16:04:14
162017-12-181.1252019-09-23 16:04:14
172006-12-210.9592019-09-23 16:04:14
182008-12-190.7192019-09-23 16:04:14
192010-12-170.4322019-09-23 16:04:14
202016-07-050.0922019-09-23 16:04:14
212012-12-170.622019-09-23 16:04:14
222018-07-060.1982019-09-23 16:04:14
232010-07-070.0282019-09-23 16:04:14
242014-07-020.1522019-09-23 16:04:14
252006-07-050.0572019-09-23 16:04:14
262008-07-020.3192019-09-23 16:04:14
272014-12-161.322019-09-23 16:04:14
282016-12-160.8182019-09-23 16:04:14
292018-12-171.152019-09-23 16:04:14