f/overrides/event-backup/gsus-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

495 B

1DateDividends
22021-09-240.183000
32021-12-270.221000
42022-12-270.241000
52024-06-240.226000
62025-03-250.234000
72025-09-240.241000
82021-06-240.178000
92020-12-240.206000
102023-06-260.222000
112023-09-250.185000
122024-09-240.227000
132025-06-240.251000
142020-09-240.202000
152022-06-240.177000
162023-03-270.207000
172024-03-220.224000
182025-12-230.255000
192026-03-250.273000
202026-06-240.256000
212022-03-250.147000
222022-09-260.216000
232023-12-260.252000
242024-12-230.284000
252021-03-250.160000