f/overrides/event-backup/gunr-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
22022-03-180.351000
32024-06-210.433000
42021-06-180.239000
52024-03-150.159000
62025-09-190.350000
72013-12-270.695000
82017-03-200.123000
92019-03-150.289000
102026-06-180.349000
112012-12-270.368000
122016-09-190.126000
132023-03-170.165000
142020-03-200.255000
152020-06-190.189000
162020-12-180.189000
172021-12-170.404000
182026-03-200.198000
192016-03-210.121000
202018-09-240.293000
212019-09-200.292000
222021-09-170.544000
232022-12-160.244000
242025-03-210.267000
252015-12-231.001000
262016-06-200.156000
272016-12-220.093000
282018-03-190.165000
292018-12-210.222000
302022-06-170.613000
312011-12-280.088000
322017-06-190.204000
332017-09-180.220000
342022-09-160.583000
352023-06-160.533000
362023-12-150.459000
372024-09-200.319000
382024-12-200.320000
392017-12-210.120000
402019-12-200.213000
412020-09-180.274000
422025-12-190.320000
432021-03-190.238000
442023-09-150.297000
452025-06-200.353000
462014-12-290.857000
472018-06-180.279000
482019-06-210.297000