f/overrides/event-backup/fspsx-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

495 B

1DateDividends
22016-12-161.023000
32017-12-151.050000
42021-04-090.105000
52021-12-101.408000
62023-12-081.322000
72016-04-150.065000
82012-12-141.058000
92014-12-191.030000
102015-04-100.014000
112015-12-180.989000
122018-04-110.045000
132018-12-140.968000
142019-04-120.100000
152011-12-161.025000
162014-04-110.283000
172019-12-131.266000
182013-12-131.053000
192020-12-110.838000
202022-12-091.076000
212022-12-280.020000
222024-04-120.178000
232024-12-201.378000
242025-12-191.917000
252017-04-120.030000