f/overrides/event-backup/avus-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

555 B

1DateDividends
22020-09-220.189000
32021-03-230.164000
42022-12-150.322000
52023-09-210.267000
62024-06-240.298000
72025-06-240.309000
82019-12-230.191000
92020-06-230.183000
102022-06-210.263000
112024-12-170.342000
122026-03-100.244000
132021-06-220.200000
142022-03-220.215000
152025-12-160.325000
162026-06-090.336000
172025-09-230.280000
182020-03-240.153000
192020-12-170.224000
202021-12-160.271000
212022-09-200.285000
222021-09-210.231000
232023-03-230.264000
242023-06-200.277000
252023-12-180.343000
262024-03-210.262000
272024-09-230.327000
282025-03-250.296000