f/overrides/event-backup/dtdrx-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

535 B

1DateDividends
22023-03-300.030000
32023-09-280.058000
42025-09-290.076000
52025-12-150.152000
62020-03-300.035000
72020-12-160.046000
82021-06-290.056000
92026-03-300.040000
102026-06-290.088000
112022-09-290.064000
122024-06-270.078000
132024-12-130.138000
142022-03-300.030000
152022-12-140.062000
162023-06-290.073000
172023-12-130.089000
182024-09-270.060000
192020-09-290.042000
202021-03-300.028000
212021-09-290.049000
222025-03-280.037000
232025-06-270.082000
242024-03-270.030000
252020-06-290.157000
262021-12-150.068000
272022-06-290.062000