f/overrides/event-backup/idmo-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

1.0 KiB

1DateDividends
22014-06-200.581000
32019-06-240.214000
42024-03-180.303000
52025-03-240.224000
62014-03-210.010000
72013-06-210.200000
82016-06-170.226000
92018-03-190.098000
102018-12-240.268000
112020-12-210.144000
122025-09-220.173000
132012-09-210.069000
142015-03-200.030000
152016-12-160.132000
162019-12-230.110000
172022-03-210.235000
182013-09-200.164000
192016-03-180.117000
202017-09-180.171000
212021-03-220.150000
222021-06-210.138000
232023-09-180.325000
242025-06-230.430000
252015-09-180.122000
262019-03-180.128000
272019-09-230.134000
282020-03-230.200000
292022-12-190.121000
302023-06-200.207000
312024-06-240.234000
322026-06-220.517000
332015-06-190.306000
342013-12-200.132000
352015-12-180.130000
362016-09-160.016000
372017-03-170.231000
382022-09-190.370000
392013-03-150.010000
402012-12-210.234000
412020-06-220.098000
422022-06-210.434000
432023-03-200.404000
442024-09-230.277000
452024-12-230.096000
462025-12-221.236000
472012-06-150.220000
482026-03-230.266000
492017-12-180.189000
502018-06-180.379000
512021-12-200.218000
522023-12-180.128000
532017-06-160.277000