f/overrides/event-backup/awsax-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

535 B

1DateDividends
22012-12-070.243000
32015-12-110.162000
42017-12-130.849000
52019-12-130.189000
62020-12-152.964000
72025-12-181.510000
82005-12-160.817000
92006-12-150.789000
102009-12-110.075000
112010-12-100.085000
122011-04-130.048000
132018-12-141.091000
142021-12-160.862000
152023-12-150.356000
162001-12-140.001000
172004-12-170.505000
182007-12-140.763000
192008-12-120.041000
202011-12-090.120000
212014-12-121.729000
222016-12-130.187000
232002-12-130.004000
242003-12-120.209000
252024-12-161.242000
262013-12-130.232000
272022-12-160.394000