f/overrides/event-backup/dma-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

655 B

1DateDividends
22022-07-180.056000
32022-09-190.056000
42023-03-170.055000
52026-05-190.113000
62022-03-180.059000
72026-03-200.113000
82025-04-170.073000
92024-12-200.324000
102022-04-180.060000
112023-05-180.053000
122025-03-200.073000
132025-06-180.083000
142026-02-170.113000
152026-07-210.113000
162026-08-210.113000
172022-08-180.057000
182022-10-200.054000
192023-01-190.055000
202023-06-160.053000
212026-06-180.113000
222022-06-160.059000
232023-02-160.056000
242025-05-190.073000
252022-01-240.060000
262022-05-190.059000
272022-11-170.056000
282022-12-190.055000
292023-04-170.054000
302025-07-180.083000
312025-08-180.083000
322026-04-200.113000
332022-02-170.060000