f/overrides/event-backup/duslx-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
22022-09-290.109000
32017-09-280.073000
42018-06-280.088000
52021-06-290.107000
62021-12-152.138000
72020-06-290.110000
82020-09-290.099000
92015-03-090.047000
102017-03-300.067000
112019-09-270.094000
122020-03-300.094000
132024-03-270.095000
142026-06-290.099000
152018-12-180.563000
162021-03-300.082000
172023-03-300.098000
182023-12-130.264000
192022-03-300.090000
202023-09-280.105000
212024-06-270.109000
222015-12-160.159000
232016-09-290.061000
242016-12-150.078000
252020-12-160.093000
262016-03-300.058000
272017-06-290.074000
282025-12-150.077000
292022-06-290.109000
302023-06-290.110000
312025-06-270.109000
322014-12-160.135000
332016-06-290.071000
342018-09-270.113000
352019-12-170.281000
362025-09-290.094000
372026-03-300.105000
382015-09-090.063000
392017-12-150.121000
402019-03-280.082000
412019-06-270.100000
422024-09-270.112000
432024-12-130.073000
442025-03-280.097000
452015-06-080.059000
462018-03-280.072000
472021-09-290.099000
482022-12-141.829000