f/overrides/event-backup/hrsax-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
22021-12-170.642000
32024-12-170.686000
42009-12-300.168000
52011-12-290.147000
62017-12-210.819000
72018-12-200.198000
82026-05-280.081000
92022-04-220.333000
102023-12-150.901000
112026-01-290.078000
122026-02-260.078000
132020-12-180.360000
142026-04-290.079000
152026-07-300.078000
162008-12-300.126000
172016-12-202.064000
182025-12-171.022000
192026-03-300.075000
202010-12-300.084000
212014-12-160.267000
222019-12-180.570000
232012-12-280.252000
242013-12-160.159000
252026-06-290.079000
262007-12-280.030000
272008-05-290.006000
282015-12-150.720000
292022-12-160.049000