f/overrides/event-backup/ccrsx-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

715 B

1DateDividends
22009-03-310.018000
32020-03-311.116000
42021-12-221.193000
52006-12-270.588000
62007-09-281.506000
72019-12-270.024000
82006-06-280.294000
92008-12-310.138000
102018-03-290.474000
112006-09-270.510000
122010-12-293.006000
132011-09-091.212000
142018-12-310.054000
152019-03-290.060000
162024-03-280.530000
172026-03-252.442000
182009-09-110.042000
192008-09-300.210000
202009-12-314.938000
212018-06-290.036000
222018-09-280.042000
232019-09-300.060000
242022-03-314.631000
252007-06-290.648000
262008-03-310.348000
272010-09-100.150000
282007-03-300.534000
292008-09-114.056000
302017-06-302.346000
312025-03-280.792000
322006-03-300.168000
332008-06-300.198000
342019-06-280.048000
352023-03-314.698000
362007-12-310.606000