f/overrides/event-backup/fmclx-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

935 B

1DateDividends
22017-12-180.106000
32019-12-051.880000
42025-03-170.047000
52024-09-160.053000
62017-03-240.067000
72019-06-240.060000
82020-03-240.066000
92020-12-042.862000
102022-03-240.043000
112022-09-260.037000
122022-12-071.712000
132025-06-160.040000
142026-03-160.043000
152024-12-122.249000
162017-06-260.042000
172017-09-250.049000
182019-03-250.061000
192019-09-240.058000
202021-09-240.030000
212022-06-240.033000
222023-12-121.619000
232025-09-150.034000
242018-12-180.095000
252020-12-180.076000
262021-06-240.031000
272024-03-150.054000
282024-12-160.068000
292017-12-054.065000
302018-09-240.072000
312020-06-240.038000
322023-03-150.054000
332023-06-150.024000
342021-03-240.043000
352021-12-064.218000
362022-12-190.099000
372026-06-150.035000
382018-12-064.363000
392020-09-240.018000
402021-12-200.086000
412023-09-150.052000
422023-12-150.081000
432024-06-170.031000
442018-03-260.065000
452018-06-250.066000
462019-12-180.096000
472025-12-151.515000