f/overrides/event-backup/fwwfx-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

1DateDividends
21995-12-080.150000
32002-12-130.020000
42022-12-091.582000
52023-12-080.280000
62025-12-124.188000
72003-12-120.070000
82009-12-040.107000
92020-12-042.766000
102024-12-135.095000
111990-12-140.080000
121997-12-121.270000
132000-12-152.650000
142021-12-034.586000
152023-12-270.013000
162019-12-061.382000
171998-12-110.540000
182006-12-082.830000
192009-12-300.005000
202011-12-020.065000
212012-12-070.239000
222017-12-081.822000
232016-12-090.266000
242007-12-072.500000
252010-12-030.124000
261992-12-110.260000
271993-12-100.250000
281996-12-130.550000
291999-12-101.620000
302004-12-100.120000
312005-12-091.140000
322013-12-062.066000
332014-12-052.493000
342018-12-072.225000
352010-12-300.022000
361991-12-130.100000
371994-12-090.730000
382008-12-050.170000
392015-12-040.886000