f/overrides/event-backup/fdcax-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

915 B

1DateDividends
21989-04-210.020000
31998-12-300.010000
42003-12-050.030000
52024-12-137.730000
62015-12-044.275000
72020-12-043.499000
81989-12-191.410000
91997-12-052.930000
102008-12-050.184000
112011-12-020.033000
122012-12-070.737000
131989-09-150.030000
141992-12-110.780000
152004-12-031.220000
162010-12-030.020000
172013-12-063.641000
182019-12-064.572000
192023-12-081.323000
201988-12-120.130000
211990-12-070.180000
221991-12-062.750000
232009-12-300.002000
242012-12-270.020000
252017-12-084.006000
261993-02-050.040000
271994-02-040.390000
282000-12-082.280000
292011-12-280.010000
302009-12-040.020000
312014-12-054.158000
322016-12-091.779000
332018-12-073.943000
341993-12-101.120000
351995-12-081.400000
361998-12-040.540000
372006-12-081.450000
382021-12-037.398000
392025-12-123.675000
401994-12-091.630000
411996-12-061.660000
421999-12-032.060000
432007-12-072.340000
441987-12-110.840000
452005-12-092.460000
462022-12-092.971000