f/overrides/event-backup/gsew-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

715 B

1DateDividends
22021-06-240.218000
32025-12-230.374000
42018-12-240.130000
52019-12-240.222000
62020-06-240.198000
72019-09-240.192000
82024-03-220.184000
92024-12-230.398000
102023-06-260.281000
112023-12-260.438000
122024-09-240.251000
132025-03-250.241000
142025-06-240.330000
152017-12-210.234000
162021-12-270.364000
172023-03-270.153000
182025-09-240.347000
192019-06-240.196000
202020-09-240.204000
212022-06-240.265000
222022-03-250.154000
232022-09-260.115000
242018-03-230.141000
252020-03-250.278000
262026-06-240.314000
272022-12-270.471000
282023-09-250.228000
292019-03-250.229000
302021-03-250.176000
312021-09-240.198000
322024-06-240.292000
332026-03-250.270000
342018-06-250.163000
352018-09-240.181000
362020-12-240.205000