f/overrides/event-backup/eivfx-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

475 B

1DateDividends
22018-12-140.314000
32021-12-092.702000
42024-12-121.088000
52025-12-150.899000
62014-12-110.990000
72016-12-140.191000
82018-12-100.835000
92022-12-090.942000
102023-12-110.254000
112014-12-160.242000
122017-12-130.996000
132020-12-160.194000
142022-12-150.148000
152023-12-150.141000
162024-12-200.154000
172015-12-160.165000
182017-12-150.118000
192019-12-101.241000
202021-12-160.152000
212025-12-220.187000
222015-12-111.321000
232016-12-090.809000
242019-12-170.153000