f/overrides/event-backup/grid-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
22017-06-220.393000
32018-06-210.308000
42018-12-180.008000
52010-06-220.108000
62014-12-230.031000
72015-12-230.078000
82016-09-210.104000
92020-09-240.199000
102023-09-220.159000
112024-06-270.638000
122011-06-210.172000
132014-06-240.298000
142014-09-230.065000
152020-12-240.146000
162021-06-240.339000
172021-12-230.038000
182025-12-120.338000
192011-12-210.082000
202016-12-210.118000
212020-03-260.062000
222022-03-250.129000
232025-03-270.139000
242019-09-250.244000
252012-06-210.119000
262017-09-210.065000
272019-03-210.106000
282015-03-250.019000
292015-06-240.241000
302025-06-260.835000
312018-09-140.121000
322024-09-260.251000
332016-06-220.213000
342023-03-240.080000
352022-12-230.273000
362024-12-130.273000
372014-03-250.126000
382021-03-250.050000
392022-09-230.271000
402018-03-220.063000
412024-03-210.102000
422025-09-250.236000
432012-12-210.017000
442015-09-230.072000
452019-12-130.080000
462021-09-230.224000
472023-06-270.698000
482026-06-250.756000
492009-12-220.012000
502013-06-110.390000
512019-06-140.262000
522026-03-260.100000
532012-03-210.035000
542012-09-210.089000
552013-12-180.080000
562022-06-240.429000
572023-12-220.355000
582013-03-210.016000
592017-12-210.088000
602020-06-250.146000