f/overrides/event-backup/fsblx-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

815 B

1DateDividends
22025-12-301.134000
32019-06-270.105000
42019-09-270.083000
52021-03-300.074000
62021-12-303.047000
72024-03-150.092000
82024-09-160.101000
92026-03-160.102000
102016-09-290.042000
112017-06-290.087000
122021-09-290.074000
132023-12-280.134000
142017-09-280.076000
152019-12-300.311000
162020-09-290.063000
172020-12-300.370000
182021-06-290.081000
192023-03-150.081000
202017-03-300.058000
212018-03-280.072000
222018-12-280.812000
232019-03-280.069000
242022-12-290.141000
252024-06-170.097000
262025-09-150.107000
272022-06-290.082000
282024-12-300.175000
292025-03-170.101000
302026-06-150.112000
312017-12-280.124000
322018-06-280.112000
332020-03-300.058000
342020-06-290.073000
352018-09-270.080000
362023-06-150.082000
372023-09-150.048000
382016-12-290.151000
392022-03-300.078000
402022-09-290.050000
412025-06-160.125000