f/overrides/event-backup/ewq-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
22003-12-160.180000
32011-06-220.490000
42021-12-131.037000
52022-06-090.948000
62011-12-200.177000
72016-06-220.614000
82016-12-210.087000
92025-12-160.228000
101999-12-210.566000
112015-06-250.457000
122015-12-210.072000
132019-12-160.069000
142025-06-160.954000
152012-06-210.515000
162018-06-190.646000
171998-08-250.404000
182013-12-180.122000
192020-12-140.163000
202021-06-100.435000
212000-12-201.800000
222004-12-230.299000
232009-12-220.121000
242012-12-180.113000
252000-08-241.233000
262024-12-170.272000
272023-06-070.817000
282005-12-230.322000
292002-12-230.177000
301997-12-230.078000
311999-08-250.248000
322010-06-230.483000
332010-12-210.180000
342013-06-270.569000
352008-06-251.242000
362014-12-170.219000
372018-12-180.123000
381997-08-250.353000
392001-08-240.053000
402006-12-200.464000
411998-12-220.380000
422014-06-250.613000
432017-06-200.497000
442020-06-150.177000
452009-06-230.505000
462017-12-190.095000
472003-12-220.284000
482008-12-230.447000
492015-12-290.016000
502019-06-170.730000
512022-12-130.123000
522023-12-200.252000
532026-06-151.087000
542007-12-200.346000
552024-06-110.915000
561996-08-260.312000