f/overrides/event-backup/drihx-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

875 B

1DateDividends
22023-06-290.094000
32023-12-130.310000
42024-12-130.265000
52026-06-290.212000
62018-06-280.072000
72019-03-280.033000
82021-03-300.031000
92021-09-290.073000
102022-03-300.037000
112022-12-140.333000
122024-09-270.100000
132025-12-150.540000
142017-03-300.034000
152017-09-280.026000
162022-06-290.098000
172022-09-290.113000
182024-03-270.028000
192025-03-280.054000
202015-12-160.002000
212020-06-290.052000
222023-03-300.030000
232016-03-300.048000
242019-09-270.056000
252016-12-150.067000
262020-03-300.041000
272023-09-280.109000
282026-03-300.033000
292017-06-290.070000
302021-06-290.069000
312018-12-180.115000
322019-12-170.129000
332020-12-160.300000
342021-12-150.317000
352024-06-270.144000
362025-09-290.138000
372016-09-290.029000
382018-09-270.057000
392018-03-280.015000
402019-06-270.078000
412020-09-290.045000
422025-06-270.148000
432016-06-290.067000
442017-12-150.116000