f/overrides/event-backup/dfstx-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

2.0 KiB

1DateDividends
22011-12-130.071000
32024-03-270.113000
42024-06-270.136000
52009-09-090.019000
62008-03-100.040000
72008-06-100.043000
82012-09-100.051000
92015-12-161.580000
102018-12-171.294000
112022-06-290.112000
122023-03-300.117000
132005-06-080.022000
142025-06-270.149000
152024-09-270.135000
161998-12-211.344000
172006-03-080.012000
182020-12-140.184000
191992-12-150.123000
201995-11-270.387000
212004-09-080.015000
222006-09-080.039000
232007-03-080.016000
242007-12-191.212000
252009-03-100.019000
262010-03-090.013000
271993-11-160.310000
282025-09-290.144000
292012-12-131.422000
302011-06-080.036000
312016-09-290.065000
322006-12-181.219000
332011-03-080.016000
342020-09-290.070000
352021-03-300.095000
362022-09-290.122000
372025-12-100.142000
382004-12-200.208000
391994-12-280.957000
402003-12-220.075000
412008-12-100.092000
422009-12-090.053000
432012-06-080.087000
442013-06-100.061000
452014-06-090.068000
462015-06-080.074000
471994-11-280.287000
482019-09-270.087000
492014-12-161.008000
502020-03-300.084000
512022-12-121.703000
522023-09-280.118000
531999-12-201.267000
542007-09-100.071000
552009-06-090.035000
562012-03-080.008000
572013-12-121.025000
582016-12-150.936000
592018-06-280.084000
602019-12-160.902000
611997-12-221.652000
622023-12-110.721000
632013-03-080.005000
642013-09-100.071000
652017-06-290.083000
662018-09-270.096000
672023-06-290.131000
682010-06-080.024000
692005-12-191.214000
702006-06-080.036000
712010-12-090.086000
722017-03-300.073000
732017-09-280.082000
742026-06-290.176000
752000-12-181.508000
762014-03-100.027000
772019-06-270.095000
782008-09-090.057000
792001-12-171.367000
802002-12-160.156000
812004-06-080.024000
822014-09-090.061000
832019-03-280.074000
842021-06-290.099000
852021-12-132.689000
861993-12-150.086000
872024-12-100.128000
881996-12-271.149000
892005-09-080.040000
902010-09-080.036000
912011-09-080.042000
922016-03-300.071000
932018-03-280.062000
942021-09-290.124000
951995-12-270.410000
962025-03-280.128000
972022-03-300.068000
982007-06-080.058000
992015-03-090.062000
1002015-09-090.080000
1012016-06-290.086000
1022017-12-151.531000
1032020-06-290.077000
1042026-03-300.131000
1052005-03-080.008000