f/overrides/event-backup/dbalx-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

975 B

1DateDividends
22024-06-140.070000
32024-12-260.103000
42016-12-280.031000
52019-06-140.072000
62021-03-150.045000
72022-09-150.048000
82023-12-260.084000
92022-12-050.022000
102026-06-150.173000
112016-03-150.020000
122018-03-150.029000
132018-06-150.140000
142019-03-150.050000
152021-12-030.022000
162016-09-150.029000
172022-12-270.078000
182023-03-150.059000
192025-06-160.143000
202025-12-260.107000
212017-12-040.058000
222020-03-160.060000
232023-06-150.056000
242023-09-150.073000
252016-06-150.032000
262017-03-150.036000
272022-03-150.027000
282024-12-040.154000
292025-09-150.085000
302020-09-150.047000
312020-12-280.097000
322021-09-150.048000
332017-06-150.091000
342017-09-150.051000
352018-09-170.056000
362019-12-270.076000
372020-06-150.044000
382022-06-150.326000
392024-09-160.082000
402025-12-040.296000
412026-03-160.079000
422017-12-270.042000
432018-12-270.065000
442019-09-160.055000
452019-12-050.080000
462025-03-140.083000
472021-06-150.032000
482021-12-280.073000
492024-03-150.076000