f/overrides/event-backup/gxc-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

755 B

1DateDividends
22009-12-180.165000
32015-06-190.587000
42017-06-160.260000
52019-06-240.807000
62020-12-210.790000
72023-12-181.687000
82024-06-240.626000
92025-12-221.324000
102007-12-210.626000
112018-12-241.164000
122026-06-220.665000
132012-12-210.327000
142013-12-200.491000
152014-06-200.972000
162019-12-230.832000
172022-06-210.763000
182011-12-160.300000
192012-06-151.170000
202016-12-161.047000
212020-06-220.564000
222010-06-180.661000
232011-06-171.000000
242016-06-170.427000
252013-06-211.291000
262018-06-150.559000
272021-12-200.902000
282022-12-201.333000
292023-06-200.833000
302024-12-231.502000
312025-06-231.002000
322008-12-190.804000
332009-06-190.537000
342015-12-181.508000
352017-12-151.712000
362021-06-210.495000
372010-12-170.294000
382014-12-190.708000