f/overrides/event-backup/eww-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

1.1 KiB

1DateDividends
22004-12-230.277000
32008-12-230.423000
42010-06-230.237000
52020-06-150.124000
61997-12-230.010000
72006-12-200.455000
82012-12-180.174000
92017-06-200.583000
102003-12-220.208000
112011-12-200.347000
122015-12-290.331000
132020-12-140.347000
142021-06-100.387000
152022-06-090.753000
162026-06-151.138000
172000-12-200.073000
182002-12-230.522000
192009-06-230.189000
202023-06-070.458000
212024-06-110.476000
222025-06-161.083000
231998-08-250.371000
241998-12-220.049000
252023-12-201.027000
262012-06-210.570000
272013-06-270.458000
282021-12-130.658000
292001-08-240.111000
302022-12-131.045000
311996-08-260.015000
322019-12-160.434000
332020-12-300.144000
342007-12-201.046000
352017-12-190.509000
362005-12-230.476000
372008-06-250.550000
382011-06-220.431000
392013-12-180.737000
402014-12-170.512000
412015-12-210.417000
422018-06-190.574000
431997-08-250.501000
442025-12-161.327000
452000-08-240.423000
462003-12-160.520000
472015-06-250.416000
482018-12-180.372000
492024-12-171.580000
502001-12-240.070000
512009-12-220.515000
522010-12-210.284000
532013-12-270.136000
542016-06-220.579000
552019-06-170.882000
562010-12-290.019000
571999-08-250.088000
582014-06-250.220000
592016-12-210.199000