f/overrides/event-backup/dgbex-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

555 B

1DateDividends
22020-12-160.144000
32022-06-290.074000
42025-09-290.071000
52019-12-170.053000
62021-09-290.057000
72023-03-300.027000
82023-06-290.079000
92026-03-300.027000
102020-09-290.047000
112022-09-290.056000
122025-06-270.086000
132020-06-290.046000
142023-12-130.083000
152025-03-280.029000
162026-06-290.091000
172021-03-300.022000
182021-12-150.153000
192021-06-290.066000
202024-12-130.241000
212025-12-150.108000
222020-03-300.020000
232022-12-140.047000
242023-09-280.051000
252024-03-270.023000
262024-06-270.079000
272024-09-270.056000
282022-03-300.016000