f/overrides/event-backup/bles-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

775 B

1DateDividends
22020-06-260.162000
32022-06-240.269000
42023-03-270.108000
52024-03-270.149000
62025-06-260.385000
72020-12-140.050000
82021-03-260.145000
92019-03-280.108000
102019-06-270.241000
112022-09-230.114000
122024-09-250.170000
132017-06-160.154000
142017-09-180.127000
152018-06-270.188000
162019-09-260.177000
172020-03-270.134000
182021-09-240.192000
192022-03-250.078000
202018-12-140.216000
212019-12-130.129000
222022-12-140.053000
232023-09-220.146000
242026-06-260.404000
252018-03-280.066000
262021-06-250.223000
272021-12-142.958000
282023-06-230.268000
292024-06-250.305000
302024-12-160.079000
312018-09-260.109000
322020-09-250.124000
332023-12-140.123000
342025-03-270.085000
352025-09-260.161000
362017-12-150.286000
372020-12-300.070000
382025-12-170.219000
392026-03-270.091000