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bb8e39605e
f/overrides/event-backup/mczzx-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
Raw Blame History

1DateDividends
22021-12-150.436000
32024-12-310.036000
42025-01-310.035000
52016-12-190.361000
62025-04-300.036000
72025-10-310.035000
82026-05-290.033000
92017-12-180.332000
102020-12-110.687000
112022-12-130.353000
122024-08-300.035000
132025-06-300.037000
142025-07-310.036000
152013-12-180.376000
162025-09-300.039000
172026-02-270.033000
182026-03-310.037000
192012-12-190.533000
202024-07-310.038000
212025-03-310.036000
222025-05-300.034000
232025-11-280.032000
242026-04-300.035000
252026-07-310.036000
262019-12-130.380000
272024-09-300.037000
282024-10-310.035000
292024-11-290.034000
302025-12-310.037000
312026-06-300.037000
322015-12-170.494000
332023-12-120.425000
342025-02-280.035000
352025-08-290.034000
362011-12-190.524000
372014-12-170.350000
382018-12-140.358000
392026-01-300.034000