f/overrides/event-backup/amdvx-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
22015-12-081.441000
32016-12-270.117000
42019-03-190.060000
52023-09-190.074000
62026-06-090.123000
72017-12-260.092000
82016-03-150.028000
92017-06-200.063000
102017-09-190.142000
112018-09-180.063000
122023-03-210.042000
132014-06-100.085000
142015-06-090.068000
152017-03-210.042000
162024-12-171.206000
172026-03-100.024000
182013-12-060.961000
192015-03-100.011000
202022-03-221.119000
212014-09-090.067000
222016-12-130.475000
232017-12-121.387000
242022-12-211.056000
252023-06-200.099000
262014-12-230.079000
272018-12-111.710000
282018-12-200.075000
292021-06-220.086000
302021-09-210.089000
312025-06-240.097000
322014-03-110.011000
332015-09-080.058000
342015-12-280.092000
352016-06-210.078000
362018-12-310.075000
372019-06-180.083000
382022-09-200.094000
392019-09-170.071000
402022-06-210.103000
412024-06-180.082000
422024-03-190.053000
432016-09-200.056000
442018-03-200.038000
452020-06-160.082000
462020-09-220.085000
472021-12-212.709000
482025-09-230.076000
492013-12-230.099000
502014-12-091.646000
512023-12-190.655000
522018-06-190.065000
532019-12-200.093000
542021-03-230.051000
552024-09-170.078000
562025-03-250.040000
572013-09-100.051000
582020-03-100.037000
592020-12-220.161000
602025-12-161.983000