f/overrides/event-backup/driwx-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

875 B

1DateDividends
22015-12-160.007000
32020-12-160.434000
42021-03-300.023000
52023-03-300.022000
62022-06-290.206000
72016-06-290.072000
82017-06-290.076000
92019-12-170.119000
102020-03-300.040000
112022-03-300.067000
122016-09-290.036000
132018-12-180.091000
142025-03-280.051000
152026-03-300.009000
162025-12-150.569000
172017-09-280.029000
182017-12-150.130000
192019-03-280.021000
202019-06-270.095000
212025-09-290.124000
222016-12-150.076000
232018-06-280.090000
242018-09-270.073000
252021-06-290.138000
262020-06-290.034000
272020-09-290.057000
282021-09-290.164000
292023-12-130.218000
302025-06-270.139000
312018-03-280.009000
322022-09-290.235000
332022-12-140.238000
342023-06-290.121000
352023-09-280.125000
362024-06-270.177000
372024-09-270.066000
382024-12-130.459000
392016-03-300.036000
402017-03-300.037000
412019-09-270.068000
422021-12-150.641000
432024-03-270.011000
442026-06-290.209000