f/overrides/event-backup/ipkw-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

915 B

1DateDividends
22016-12-160.267000
32019-03-180.083000
42022-06-210.587000
52023-09-180.226000
62024-03-180.372000
72024-09-230.363000
82024-12-230.518000
92015-06-190.157000
102021-09-200.235000
112025-06-230.457000
122026-03-230.567000
132026-06-220.450000
142022-03-210.294000
152014-06-200.199000
162018-03-190.094000
172018-06-180.216000
182020-06-220.080000
192020-12-210.089000
202021-03-220.212000
212021-06-210.195000
222025-09-220.292000
232014-09-190.020000
242019-06-240.274000
252019-12-230.136000
262020-09-210.144000
272024-06-240.384000
282025-03-240.485000
292021-12-202.293000
302022-12-190.086000
312023-06-200.198000
322015-12-180.183000
332016-09-160.108000
342017-09-180.024000
352018-12-240.257000
362023-03-200.410000
372014-12-190.129000
382017-06-160.088000
392017-12-180.236000
402019-09-230.322000
412020-03-230.245000
422025-12-220.737000
432016-06-170.422000
442018-09-240.185000
452022-09-190.294000
462023-12-180.163000