f/overrides/event-backup/fgm-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

735 B

1DateDividends
22023-12-220.399000
32025-12-120.039000
42026-06-250.842000
52017-03-230.039000
62021-12-230.174000
72016-09-210.008000
82025-06-260.375000
92016-03-230.012000
102018-09-140.136000
112013-03-210.009000
122014-06-240.666000
132021-09-230.055000
142022-09-230.423000
152023-06-270.697000
162016-06-220.464000
172019-09-250.159000
182019-12-130.063000
192022-06-241.145000
202024-06-270.800000
212013-06-210.650000
222017-09-210.464000
232018-03-220.002000
242018-06-210.684000
252022-12-230.201000
262012-06-210.393000
272014-09-230.026000
282021-06-240.539000
292022-03-250.152000
302020-06-250.257000
312020-12-240.287000
322017-06-220.578000
332019-06-140.800000
342020-09-240.138000
352024-12-130.033000
362012-03-210.020000
372015-06-240.366000