f/overrides/event-backup/agthx-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

955 B

1DateDividends
21998-12-232.300000
32010-12-210.245000
42022-12-162.006000
51982-10-060.147500
61990-12-140.120000
72003-12-120.006000
82016-12-212.779000
92020-12-182.905000
101983-10-030.100000
111987-09-010.062500
121991-12-130.087500
131993-12-150.272500
142000-12-154.240000
152013-12-182.886000
162014-12-174.225000
172015-12-223.664000
181980-09-250.037500
191981-09-300.113000
201992-12-160.047500
211994-12-210.302500
221996-12-130.970000
232001-12-140.045000
242004-12-100.090000
252017-12-203.484000
262018-12-215.125000
272024-12-186.691000
281986-10-100.070000
291995-12-200.640000
302006-12-181.374000
312008-12-220.234000
322012-12-190.283000
332019-12-203.655000
342023-12-154.671000
352025-12-178.604000
361984-10-010.072500
371985-10-040.055000
381987-12-110.010000
391989-12-070.152500
402002-12-130.019000
412007-12-182.416000
422009-12-210.211000
431988-12-090.077500
441997-12-172.190000
451999-12-163.240000
462005-12-190.415000
472011-12-200.219000
482021-12-176.079000