f/overrides/event-backup/eqnvx-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
22012-12-110.066000
32018-03-270.087000
42019-06-260.109000
52014-03-270.050000
62023-06-220.108000
72024-06-250.133000
82013-12-100.151000
92015-12-100.206000
102017-12-210.588000
112023-09-210.096000
122024-03-260.102000
132015-06-250.056000
142016-03-290.089000
152017-03-290.095000
162021-03-250.074000
172021-12-161.409000
182023-12-140.528000
192014-06-260.094000
202020-03-260.105000
212020-09-240.087000
222017-06-280.078000
232019-03-270.081000
242020-06-250.096000
252025-12-112.407000
262014-12-110.280000
272015-03-260.066000
282026-06-250.122000
292013-09-250.051000
302019-12-190.125000
312026-03-260.086000
322022-09-220.105000
332025-03-250.074000
342013-03-270.042000
352013-06-260.053000
362014-09-250.070000
372017-09-270.100000
382018-12-200.723000
392019-09-260.081000
402015-09-280.059000
412016-06-280.108000
422021-09-230.107000
432018-06-270.112000
442018-09-260.083000
452021-06-240.121000
462023-03-230.081000
472024-09-260.120000
482024-12-121.044000
492016-12-130.066000
502022-06-230.124000
512025-09-250.129000
522016-09-270.092000
532020-12-170.374000
542022-03-240.058000
552025-06-260.134000
562022-12-150.836000