f/overrides/event-backup/emty-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
22018-06-200.134000
32024-06-260.306000
42024-09-250.388000
52024-12-230.518000
62025-12-240.248000
72018-12-260.138000
82019-09-250.132000
92020-03-250.034000
102023-09-200.300000
112024-03-200.332000
122025-06-250.228000
132025-09-240.228000
142018-09-260.108000
152019-03-200.116000
162019-06-250.120000
172023-03-220.212000
182023-06-210.274000
192023-12-200.470000
202025-03-260.230000
212026-03-250.144000
222026-06-240.165000
232018-03-210.076000
242019-12-240.182000
252022-12-220.192000