f/overrides/event-backup/dwusx-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

1.0 KiB

1DateDividends
22015-06-080.051000
32016-12-150.054000
42017-09-280.082000
52021-03-300.017000
62025-03-280.056000
72016-06-290.113000
82017-03-300.013000
92017-12-150.329000
102018-06-280.145000
112018-12-180.399000
122022-06-290.194000
132024-06-270.214000
142026-06-290.305000
152026-03-300.029000
162013-06-100.126000
172014-09-090.066000
182015-09-090.066000
192016-03-300.045000
202019-12-170.173000
212020-03-300.013000
222020-09-290.059000
232016-09-290.022000
242024-09-270.093000
252023-09-280.091000
262013-12-120.277000
272014-06-090.045000
282014-12-160.171000
292019-06-270.158000
302019-09-270.071000
312021-12-150.822000
322023-06-290.194000
332024-03-270.027000
342025-06-270.279000
352024-12-130.076000
362013-09-100.021000
372015-12-160.024000
382017-06-290.126000
392019-03-280.020000
402020-12-160.040000
412022-09-290.074000
422023-12-130.080000
432025-12-150.124000
442021-06-290.147000
452022-12-140.064000
462018-03-280.015000
472018-09-270.078000
482020-06-290.074000
492021-09-290.080000
502022-03-300.027000
512023-03-300.028000
522025-09-290.108000