f/overrides/event-backup/ddls-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

795 B

1DateDividends
22020-06-230.285000
32019-09-240.215000
42019-12-230.301000
52025-03-260.125000
62017-06-260.235000
72017-09-260.125000
82022-09-260.295000
92024-03-220.240000
102025-12-260.337000
112016-06-200.445000
122016-09-260.205000
132020-03-240.071000
142022-03-250.110000
152023-06-260.440000
162025-06-250.745000
172017-12-260.082000
182019-06-240.695000
192026-03-260.100000
202022-06-240.635000
212023-12-220.235000
222020-12-210.343000
232021-06-240.480000
242024-06-250.525000
252017-03-270.095000
262018-06-250.442000
272020-09-220.275000
282021-03-250.014000
292021-09-240.400000
302023-03-270.330000
312024-09-250.275000
322025-09-250.425000
332016-12-230.251000
342018-09-250.039000
352022-12-230.244000
362023-09-250.335000
372024-12-260.396000
382026-06-250.765000
392021-12-270.225000
402022-12-070.345000