f/overrides/event-backup/jacax-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

777 B

1DateDividends
22008-06-270.042000
32012-12-070.169000
42016-06-214.807000
52019-12-090.032000
62004-12-300.035000
72005-06-290.028000
82006-12-280.052000
92008-12-290.005000
102012-06-270.114000
112013-12-090.042000
122010-06-290.036000
132024-06-133.196000
142003-12-300.026000
152020-06-113.661000
162022-12-080.074000
172023-12-140.082000
182009-06-190.011000
192015-06-198.697000
202017-06-282.026000
212018-06-226.443000
222025-06-127.378000
231997-12-300.040000
241998-06-290.003000
252003-06-270.064000
262007-12-270.074000
272011-06-290.073000
282011-12-090.061000
292019-06-103.430000
302021-06-107.495000
312004-06-290.022000
322005-12-290.029000
332006-06-290.050000
342010-12-100.084000
352013-06-260.289000
362007-06-280.051000
372014-06-1916.174000
382022-06-157.072000
392026-06-1615.348000