f/overrides/event-backup/fiva-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

675 B

1DateDividends
22019-03-150.200000
32019-06-210.374000
42020-06-190.115000
52025-03-210.256000
62024-12-200.111000
72020-12-180.120000
82021-06-180.220000
92023-06-160.352000
102023-09-150.159000
112024-03-150.236000
122023-03-170.219000
132024-09-200.210000
142026-06-180.388000
152018-03-160.143000
162018-06-150.293000
172021-12-170.267000
182022-09-160.188000
192022-12-160.082000
202019-09-200.176000
212021-03-190.212000
222021-09-170.218000
232022-03-180.217000
242023-12-150.157000
252018-12-210.097000
262019-12-200.077000
272026-03-200.307000
282020-09-180.135000
292025-09-190.176000
302020-03-200.167000
312025-12-190.142000
322018-09-210.118000
332024-06-210.296000
342025-06-200.342000