f/overrides/event-backup/dwas-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

775 B

1DateDividends
22013-12-200.014000
32015-06-190.026000
42015-12-180.047000
52025-06-230.010000
62012-12-210.221000
72022-06-210.132000
82024-09-230.515000
92024-12-230.073000
102025-03-240.052000
112025-09-220.005000
122020-09-210.026000
132022-12-190.139000
142021-09-200.028000
152022-09-190.260000
162023-09-180.124000
172013-03-150.011000
182014-06-200.011000
192014-12-190.007000
202016-03-180.012000
212017-12-180.082000
222024-03-180.049000
232016-12-160.151000
242019-09-230.013000
252019-12-230.063000
262020-03-230.041000
272020-12-210.023000
282023-03-200.055000
292013-06-210.038000
302017-09-180.014000
312022-03-210.061000
322024-06-240.082000
332016-06-170.049000
342018-03-190.019000
352020-06-220.068000
362021-06-210.041000
372021-12-200.071000
382023-06-200.179000
392023-12-180.834000