f/overrides/event-backup/brmkx-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

895 B

1DateDividends
22025-12-160.740000
32015-07-160.024000
42017-07-200.089000
52018-04-110.041000
62018-10-110.060000
72020-07-160.023000
82021-12-090.509000
92022-10-130.036000
102022-12-130.330000
112026-07-220.063000
122015-10-150.003000
132017-10-120.091000
142017-12-041.810000
152019-07-180.044000
162021-04-070.027000
172022-07-140.053000
182023-10-120.054000
192026-04-150.051000
202016-07-210.034000
212016-10-130.041000
222020-04-080.059000
232020-12-100.242000
242021-07-150.031000
252023-07-200.036000
262024-04-100.044000
272025-07-170.063000
282020-10-080.044000
292022-04-130.023000
302025-10-090.066000
312016-04-130.048000
322016-12-150.096000
332018-12-140.248000
342019-10-100.042000
352019-12-120.316000
362024-10-100.076000
372025-04-090.050000
382015-12-110.057000
392017-04-120.039000
402019-04-100.044000
412021-10-070.047000
422024-12-120.792000
432023-04-120.038000
442023-12-140.285000
452024-07-180.044000