f/overrides/event-backup/deqyx-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

1.0 KiB

1DateDividends
22014-03-310.154000
32014-12-160.220000
42018-09-280.040000
52020-06-300.093000
62020-12-160.075000
72023-06-300.143000
82013-12-170.063000
92019-06-280.150000
102022-12-151.514000
112026-06-300.104000
122015-06-300.122000
132015-09-300.068000
142016-06-300.100000
152019-12-160.225000
162023-09-290.070000
172026-03-310.078000
182016-09-300.045000
192024-03-280.071000
202013-09-300.090000
212017-03-310.060000
222017-09-290.055000
232020-03-310.067000
242022-03-310.052000
252015-12-150.645000
262017-12-150.466000
272015-03-310.078000
282016-12-160.497000
292022-06-300.127000
302014-06-300.149000
312017-12-280.022000
322018-06-290.148000
332023-03-310.068000
342014-09-300.101000
352018-03-290.056000
362025-06-300.159000
372025-09-300.067000
382025-12-161.443000
392020-09-300.051000
402021-06-300.107000
412024-12-161.182000
422019-09-300.043000
432021-12-161.572000
442016-03-310.052000
452017-06-300.106000
462021-03-310.083000
472022-09-300.042000
482024-09-300.070000
492024-06-280.140000
502025-03-310.061000
512018-12-140.944000
522019-03-290.056000
532021-09-300.046000
542023-12-150.825000