f/overrides/event-backup/jsayx-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

895 B

1DateDividends
22016-09-300.063000
32019-06-280.049000
42019-12-161.741000
52020-03-310.032000
62017-06-300.045000
72018-09-280.050000
82019-09-300.062000
92025-12-310.579000
102014-12-170.262000
112015-12-180.228000
122016-03-310.038000
132016-06-300.058000
142017-12-150.468000
152018-12-310.386000
162021-12-153.181000
172015-12-310.255000
182017-12-290.273000
192020-09-300.027000
202021-03-310.034000
212014-12-310.373000
222015-06-300.067000
232016-12-160.191000
242018-03-290.043000
252019-12-310.273000
262020-12-150.682000
272020-12-310.294000
282021-06-300.039000
292017-03-310.045000
302018-12-140.514000
312021-09-300.008000
322023-12-290.388000
332024-12-310.547000
342025-12-150.765000
352015-09-300.018000
362017-09-290.049000
372018-06-290.053000
382021-12-310.615000
392022-12-300.325000
402015-03-310.023000
412016-12-300.225000
422019-03-290.038000
432020-06-300.032000
442022-12-151.625000
452024-12-160.473000