f/overrides/event-backup/nrfnx-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

1.1 KiB

1DateDividends
22024-03-250.227000
32024-09-260.079000
42026-03-250.112000
52020-12-180.134000
62021-09-240.043000
72023-06-260.046000
82024-12-200.133000
92015-04-080.235000
102016-09-300.078000
112019-06-250.053000
122021-03-240.210000
132015-06-250.030000
142017-09-280.079000
152019-03-260.245000
162019-09-250.036000
172013-12-183.803000
182015-03-300.067000
192025-12-220.193000
202018-12-190.743000
212019-12-181.928000
222023-12-190.028000
232026-06-250.084000
242020-06-240.034000
252021-12-210.540000
262022-03-240.152000
272023-09-260.081000
282014-03-200.034000
292014-12-180.656000
302017-12-201.067000
312016-06-300.060000
322025-09-260.067000
332020-09-240.051000
342022-12-210.047000
352024-06-260.052000
362023-03-240.144000
372025-03-250.081000
382025-06-260.064000
392015-09-290.088000
402016-03-300.129000
412022-06-240.067000
422018-03-260.354000
432022-09-260.048000
442017-03-290.300000
452014-04-080.731000
462016-04-070.551000
472014-06-190.048000
482020-03-250.227000
492021-06-240.046000
502014-09-230.040000
512016-12-200.856000
522018-09-250.064000
532017-06-280.058000
542018-06-260.071000
552013-06-200.065000
562013-09-240.046000
572015-12-211.122000