f/overrides/event-backup/fserx-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

895 B

1DateDividends
22017-06-150.026000
32023-03-200.023000
42023-09-200.107000
52024-03-200.019000
62015-06-150.107000
72014-03-170.044000
82016-06-150.229000
92018-09-170.114000
102025-06-200.039000
112013-09-160.092000
122018-12-170.967000
132020-09-150.084000
142021-09-150.066000
152022-12-200.158000
162023-06-200.115000
172023-12-200.760000
182024-06-200.111000
192016-09-150.116000
202026-06-220.039000
212025-12-220.990000
222019-12-163.430000
232022-06-210.032000
242022-09-200.113000
252016-03-150.098000
262015-09-150.111000
272016-12-150.637000
282017-09-150.102000
292017-12-152.293000
302019-06-170.030000
312019-09-160.074000
322021-12-151.274000
332014-06-160.107000
342024-12-201.781000
352022-12-150.411000
362014-09-150.093000
372015-03-160.066000
382015-12-150.152000
392018-06-150.028000
402025-09-220.095000
412013-12-160.104000
422020-06-150.094000
432020-12-151.396000
442024-09-200.128000
452014-12-150.122000