f/overrides/event-backup/amlp-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

1.2 KiB

1DateDividends
22019-08-080.950000
32011-05-061.230000
42012-11-071.280000
52014-02-061.390000
62022-11-090.750000
72020-08-130.750000
82013-11-071.370000
92014-11-061.445000
102018-08-091.035000
112019-02-140.975000
122015-02-111.460000
132015-08-121.495000
142017-11-091.025000
152016-02-101.495000
162023-02-090.770000
172024-11-130.950000
182011-02-071.215000
192017-08-091.075000
202022-08-110.740000
212023-08-100.830000
222021-05-130.680000
232024-08-080.940000
242017-02-081.125000
252019-11-140.975000
262025-02-120.970000
272026-05-131.030000
282016-05-111.200000
292021-11-100.760000
302022-05-120.730000
312015-05-131.480000
322020-02-130.950000
332023-05-110.860000
342025-05-140.980000
352020-11-120.710000
362023-11-090.880000
372024-02-080.880000
382026-02-111.010000
392010-11-051.240000
402018-05-101.035000
412018-11-080.955000
422020-05-070.750000
432012-05-071.225000
442013-08-071.345000
452012-02-071.215000
462012-08-071.260000
472025-08-130.980000
482026-08-121.030000
492013-02-071.305000
502017-05-101.075000
512021-08-120.680000
522014-05-061.395000
532016-08-101.200000
542019-05-090.975000
552021-02-110.680000
562016-11-091.200000
572018-02-081.035000
582022-02-100.710000
592024-05-090.940000
602011-08-051.265000
612011-11-071.290000
622013-05-071.320000
632014-08-061.420000
642025-11-121.000000