f/overrides/event-backup/hnlvx-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
22022-06-290.128000
32022-12-190.853000
42023-12-190.675000
52024-09-300.070000
62016-06-290.065000
72016-12-190.500000
82025-12-194.027000
92017-12-180.471000
102024-12-201.499000
112024-03-280.066000
122025-09-300.087000
132026-03-310.052000
142018-06-280.073000
152019-06-270.084000
162020-12-170.601000
172024-06-280.064000
182025-03-310.104000
192020-06-290.078000
202023-06-300.076000
212026-06-300.070000
222021-12-200.700000
232023-09-290.070000
242025-06-300.072000
252018-12-170.312000
262021-06-290.091000
272019-12-160.081000
282023-03-310.071000
292017-06-290.072000