f/overrides/event-backup/intf-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

515 B

1DateDividends
22021-12-300.161000
32022-06-090.533000
42024-12-170.427000
52025-06-160.560000
62019-12-160.437000
72020-12-140.221000
82019-06-170.551000
92020-06-150.340000
102021-12-130.711000
112022-12-130.159000
122023-06-070.549000
132026-06-150.721000
142015-06-250.168000
152018-06-190.363000
162016-12-280.028000
172017-12-190.519000
182025-12-160.522000
192015-12-210.035000
202016-12-210.155000
212018-12-180.259000
222021-06-100.678000
232023-12-200.457000
242024-06-110.587000
252016-06-220.203000
262017-06-200.420000