f/overrides/event-backup/laiax-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

875 B

1DateDividends
22014-06-040.523000
32016-06-070.258000
42025-06-100.610000
52007-12-113.191000
62009-06-100.409000
72012-12-060.498000
82013-06-050.477000
92013-12-112.498000
102021-12-204.106000
112003-06-020.047000
122005-06-070.330000
132017-12-182.781000
142019-12-171.659000
152022-06-080.670000
162025-12-170.694000
172004-06-020.155000
182018-06-121.618000
192019-06-122.057000
202020-06-101.561000
212005-12-091.279000
222006-12-083.677000
232010-12-150.200000
242011-06-081.017000
252015-06-030.384000
262018-12-188.229000
272001-06-120.390000
282006-06-060.551000
292007-06-050.253000
302008-06-110.664000
312012-12-270.026000
322015-12-091.586000
332026-06-100.402000
342002-12-060.010000
352010-06-090.491000
362014-12-092.338000
372020-12-172.900000
382021-06-101.104000
392024-12-181.799000
402001-06-290.390000
412012-06-060.060000
422016-12-070.147000
432017-06-010.384000
442024-06-120.892000