f/overrides/event-backup/hisix-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

695 B

1DateDividends
22007-12-310.286000
32008-12-310.368000
42016-12-300.063000
52019-12-180.097000
62024-06-280.063000
72010-12-310.088000
82012-12-310.228000
92015-12-310.480000
102021-12-160.509000
112022-12-150.365000
122011-06-300.075000
132011-12-300.297000
142020-06-300.011000
152026-06-300.157000
162002-12-310.051000
172003-12-310.098000
182017-06-300.002000
192022-06-300.088000
202023-06-300.075000
212023-12-140.482000
222006-12-290.074000
232009-12-310.160000
242012-06-290.060000
252014-12-310.237000
262021-06-300.005000
272020-12-170.054000
282025-12-151.101000
292004-12-310.153000
302005-12-300.156000
312013-12-310.140000
322017-12-180.078000
332018-12-170.129000
342024-12-160.200000
352025-06-300.041000