f/overrides/event-backup/hdef-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

875 B

1DateDividends
22017-03-220.165000
32022-03-180.231000
42019-03-150.206000
52020-12-180.295000
62024-09-200.208000
72026-03-200.146000
82018-09-260.206000
92018-12-190.304000
102018-03-210.137000
112022-06-240.605000
122023-03-170.069000
132024-03-150.198000
142025-06-200.631000
152015-12-160.382000
162016-09-210.034000
172020-09-180.230000
182021-03-190.260000
192021-12-170.144000
202022-09-160.249000
212023-06-230.669000
222023-09-150.232000
232016-12-091.311000
242019-12-200.145000
252026-06-180.714000
262024-12-200.139000
272025-03-210.179000
282023-12-150.110000
292016-12-210.135000
302017-09-210.216000
312025-09-190.212000
322025-12-190.181000
332019-09-200.179000
342021-06-250.414000
352022-12-160.094000
362017-12-190.108000
372018-06-270.085000
382019-06-280.507000
392020-03-200.130000
402020-06-260.256000
412021-09-170.308000
422024-06-210.556000
432016-06-210.617000
442017-06-210.347000