f/overrides/event-backup/nwhnx-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

695 B

1DateDividends
22020-09-080.002000
32022-09-120.016000
42023-12-200.118000
52024-06-100.107000
62017-12-180.126000
72014-12-160.341000
82019-12-180.114000
92021-06-070.038000
102015-12-170.173000
112019-09-090.024000
122020-12-210.116000
132024-03-110.006000
142026-03-180.016000
152013-12-130.172000
162021-12-210.179000
172022-12-210.082000
182023-09-110.008000
192021-09-070.033000
202023-06-120.117000
212024-12-190.198000
222025-06-090.128000
232025-12-180.777000
242018-09-100.024000
252016-12-160.147000
262017-06-090.031000
272018-06-080.046000
282018-12-180.307000
292026-06-170.131000
302015-06-120.036000
312019-06-070.075000
322022-06-060.118000
332024-09-090.032000
342025-09-080.014000
352017-09-110.018000