f/overrides/event-backup/clsyx-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

1.2 KiB

1DateDividends
22014-09-240.174000
32021-06-180.147000
42017-09-210.136000
52018-06-210.143000
62011-12-060.131000
72020-06-170.128000
82024-06-210.156000
92025-03-200.113000
102012-09-250.180000
112013-09-240.195000
122015-03-200.165000
132018-03-210.125000
142018-09-210.155000
152019-03-200.124000
162013-12-170.952000
172016-03-230.119000
182016-06-230.124000
192017-03-220.124000
202019-09-200.165000
212020-12-170.415000
222022-09-210.100000
232025-09-190.280000
242016-12-190.258000
252017-12-180.218000
262021-09-210.191000
272021-12-201.481000
282022-06-210.115000
292015-06-230.162000
302019-06-170.159000
312020-03-200.150000
322009-12-300.015000
332014-12-162.318000
342024-03-200.099000
352012-12-071.602000
362022-03-180.076000
372010-12-070.045000
382016-09-220.125000
392019-12-180.253000
402021-03-180.075000
412026-06-180.182000
422013-06-240.208000
432018-12-180.505000
442023-12-190.280000
452025-06-200.173000
462022-12-190.075000
472023-03-200.118000
482023-09-210.179000
492015-09-220.114000
502020-09-220.042000
512023-06-210.150000
522024-09-200.158000
532025-12-170.596000
542026-03-190.138000
552024-12-180.925000
562009-12-070.117000
572013-03-220.103000
582014-03-210.140000
592014-06-240.179000
602015-12-160.125000
612017-06-220.130000