f/overrides/event-backup/mgtsx-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

335 B

1DateDividends
22018-07-060.170000
32022-12-164.666000
42023-12-150.635000
52016-12-160.080000
62017-12-180.089000
72021-12-172.101000
82024-12-163.234000
92013-12-161.023000
102014-12-160.592000
112015-12-020.134000
122016-07-051.005000
132020-12-160.518000
142025-12-163.647000
152014-07-020.275000
162015-07-020.073000
172019-04-020.120000