f/overrides/event-backup/driux-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
22020-09-290.059000
32021-09-290.198000
42026-03-300.002000
52016-06-290.073000
62016-12-150.078000
72018-06-280.097000
82019-09-270.072000
92019-12-170.091000
102022-06-290.244000
112024-12-130.251000
122025-03-280.045000
132022-03-300.080000
142015-12-160.019000
152016-03-300.027000
162017-03-300.037000
172019-06-270.099000
182025-09-290.108000
192017-09-280.030000
202020-12-160.399000
212021-03-300.022000
222022-09-290.273000
232017-06-290.079000
242018-09-270.080000
252023-12-130.227000
262026-06-290.193000
272019-03-280.015000
282020-06-290.024000
292022-12-140.226000
302023-09-280.122000
312016-09-290.045000
322018-12-180.076000
332023-06-290.128000
342021-12-150.778000
352023-03-300.017000
362024-03-270.004000
372024-06-270.172000
382017-12-150.140000
392018-03-280.006000
402020-03-300.037000
412021-06-290.164000
422024-09-270.050000
432025-06-270.128000
442025-12-150.355000