f/overrides/event-backup/ibarx-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

935 B

1DateDividends
22017-06-150.142000
32018-06-140.105000
42018-12-132.374000
52022-09-150.076000
62024-06-210.097000
72026-03-200.102000
82018-09-130.125000
92024-03-220.307000
102024-09-200.093000
112015-03-120.043000
122020-09-100.083000
132021-09-160.050000
142021-12-163.120000
152023-12-150.065000
162014-09-110.033000
172015-06-110.053000
182016-12-080.474000
192019-09-120.103000
202020-12-101.658000
212023-03-220.081000
222025-06-200.118000
232015-12-101.376000
242016-06-160.061000
252016-09-150.072000
262018-03-150.056000
272019-03-140.052000
282019-12-121.717000
292022-03-100.050000
302022-12-154.712000
312023-06-220.076000
322025-09-220.080000
332025-12-120.469000
342019-06-130.104000
352021-06-100.032000
362022-06-070.042000
372015-09-100.087000
382017-03-160.062000
392017-12-140.902000
402020-03-120.052000
412020-06-110.054000
422021-03-110.043000
432026-06-220.124000
442014-12-110.862000
452017-09-140.144000
462023-09-220.071000
472025-03-210.102000