f/overrides/event-backup/nbxg-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

1.2 KiB

1DateDividends
22021-08-130.100000
32022-09-140.100000
42023-08-140.100000
52024-09-160.100000
62024-10-150.100000
72025-01-150.100000
82025-11-170.120000
92026-02-170.120000
102022-10-140.100000
112023-02-140.100000
122024-01-120.100000
132024-02-140.100000
142024-07-150.100000
152021-09-140.100000
162024-04-120.100000
172025-10-150.120000
182023-10-130.100000
192025-06-160.100000
202025-09-150.100000
212026-01-150.120000
222021-11-120.100000
232023-04-140.100000
242023-05-120.100000
252022-03-140.100000
262024-05-140.100000
272025-05-150.100000
282026-06-150.120000
292022-07-140.100000
302023-01-130.100000
312023-03-140.100000
322026-07-150.120000
332022-02-140.100000
342024-06-170.100000
352025-04-150.100000
362022-01-140.100000
372022-05-130.100000
382022-11-140.100000
392024-12-160.100000
402025-02-180.100000
412025-07-150.100000
422026-08-170.120000
432024-08-150.100000
442025-12-150.120000
452022-06-140.100000
462022-08-120.100000
472023-11-140.100000
482024-11-150.100000
492025-08-150.100000
502026-03-160.120000
512025-03-170.100000
522026-05-150.120000
532021-10-140.100000
542023-07-140.100000
552023-09-140.100000
562022-04-140.100000
572023-06-140.100000
582024-03-140.100000
592026-04-150.120000
602021-07-140.100000
612021-12-140.100000
622022-12-140.100000
632023-12-140.100000