f/overrides/event-backup/gslc-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

835 B

1DateDividends
22015-12-230.151000
32020-09-240.214000
42022-12-270.351000
52024-06-240.309000
62018-03-230.206000
72018-09-240.244000
82020-03-250.306000
92020-12-240.252000
102021-03-250.227000
112021-12-270.314000
122022-03-250.289000
132022-09-260.285000
142023-06-260.334000
152016-06-230.175000
162017-06-230.209000
172018-06-250.230000
182019-03-250.226000
192019-09-240.237000
202022-06-240.300000
212024-03-220.305000
222024-09-240.297000
232016-12-220.228000
242017-09-220.248000
252017-12-210.247000
262025-09-240.318000
272026-06-240.345000
282017-03-240.196000
292018-12-240.270000
302019-12-240.282000
312021-09-240.249000
322025-03-250.336000
332026-03-250.341000
342016-09-230.175000
352019-06-240.253000
362023-09-250.274000
372024-12-230.363000
382025-06-240.331000
392021-06-240.223000
402023-03-270.282000
412023-12-260.406000
422025-12-230.338000