f/overrides/event-backup/hlal-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

575 B

1DateDividends
22019-12-300.119000
32022-06-280.022000
42025-03-260.080000
52025-09-240.150000
62026-06-250.019000
72020-06-260.006000
82020-09-280.125000
92021-09-280.080000
102023-06-280.070000
112022-12-280.108000
122025-06-250.023000
132026-03-260.077000
142021-03-290.077000
152021-06-280.082000
162022-09-280.175000
172024-09-260.170000
182021-12-280.099000
192023-03-290.095000
202024-06-270.021000
212019-09-170.080000
222020-03-270.100000
232023-12-270.142000
242024-12-240.083000
252020-12-290.096000
262022-03-290.100000
272023-09-270.022000
282024-03-270.031000
292025-12-240.077000