f/overrides/event-backup/norw-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

515 B

1DateDividends
22016-12-280.718000
32017-12-280.827000
42019-06-270.521000
52020-06-290.125000
62024-06-270.811000
72025-12-300.430000
82012-12-270.495000
92014-12-290.849000
102015-12-290.632000
112020-12-300.182000
122021-12-300.147000
132023-12-280.498000
142024-12-300.603000
152026-06-292.105000
162013-12-270.627000
172018-12-280.694000
182019-12-300.019000
192023-06-290.844000
202011-12-280.590000
212010-12-290.165000
222021-06-290.313000
232022-06-290.557000
242022-12-290.471000
252025-06-270.604000
262009-12-290.010000