f/overrides/event-backup/hdvax-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

515 B

1DateDividends
22015-12-110.128000
32016-12-280.170000
42024-12-270.237000
52013-12-300.080000
62014-12-300.084000
72010-12-220.073000
82011-12-220.058000
92012-12-200.158000
102014-12-120.254000
112017-12-150.176000
122018-12-270.024000
132009-12-220.079000
142010-04-090.040000
152025-12-110.714000
162025-12-290.334000
172020-12-290.128000
182021-12-100.163000
192017-12-270.180000
202018-12-170.020000
212019-12-270.243000
222021-12-290.251000
232022-12-280.280000
242023-12-270.236000
252008-12-220.018000
262015-12-290.105000