f/overrides/event-backup/dgro-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

975 B

1DateDividends
22019-06-170.228000
32022-12-130.329000
42015-06-240.169000
52018-06-260.191000
62018-09-260.228000
72020-09-230.261000
82021-09-240.250000
92022-03-240.262000
102025-06-160.324000
112026-03-170.331000
122015-03-250.168000
132018-03-220.192000
142019-03-200.218000
152019-09-240.250000
162021-03-250.262000
172015-12-240.136000
182016-12-210.152000
192017-06-270.186000
202018-12-170.200000
212019-12-160.235000
222020-03-250.247000
232023-06-070.260000
242023-09-260.388000
252016-09-260.175000
262017-03-240.161000
272025-09-160.369000
282025-12-160.447000
292024-03-210.311000
302025-03-180.311000
312023-03-230.298000
322024-06-110.293000
332026-06-150.331000
342014-09-240.169000
352021-06-100.261000
362017-09-260.165000
372022-06-090.235000
382024-12-170.378000
392015-12-290.011000
402016-06-210.171000
412023-12-200.370000
422017-12-190.194000
432020-06-150.249000
442020-12-140.273000
452021-12-130.299000
462022-09-260.342000
472024-09-250.403000
482014-12-240.089000
492015-09-250.163000