f/overrides/event-backup/gwx-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

735 B

1DateDividends
22012-12-210.493000
32015-06-190.065000
42019-12-230.678000
52021-12-200.665000
62024-12-230.392000
72014-06-200.134000
82017-12-151.839000
92018-06-150.079000
102018-12-240.741000
112021-06-210.372000
122025-06-230.490000
132010-12-170.495000
142013-06-210.201000
152015-12-180.688000
162020-06-220.329000
172007-12-210.821000
182009-06-190.200000
192011-06-170.134000
202014-12-193.560000
212009-12-180.177000
222011-12-160.685000
232016-12-161.169000
242020-12-210.288000
252025-12-220.668000
262013-12-200.827000
272016-06-170.052000
282023-06-200.476000
292024-06-240.449000
302026-06-220.526000
312010-06-180.233000
322012-06-150.271000
332022-06-210.415000
342023-12-180.362000
352008-12-190.358000
362019-06-240.410000
372022-12-200.381000