f/overrides/event-backup/ecat-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
22023-02-140.125000
32022-05-130.100000
42024-03-140.150000
52023-08-140.125000
62025-03-140.306000
72025-11-140.282000
82025-05-150.300000
92022-09-140.100000
102023-06-140.125000
112024-11-150.305000
122025-01-150.307000
132022-01-130.100000
142023-12-140.125000
152024-10-150.302000
162026-01-200.277000
172022-07-140.100000
182022-08-120.100000
192022-10-130.100000
202024-07-150.299000
212023-07-130.125000
222025-09-150.288000
232024-06-140.297000
242024-09-160.301000
252024-12-160.307000
262022-02-140.100000
272022-03-140.100000
282022-11-140.100000
292023-10-130.125000
302026-05-150.273000
312023-11-140.125000
322024-02-140.150000
332025-08-150.290000
342025-10-150.285000
352024-05-140.150000
362025-12-220.279000
372022-12-150.100000
382026-04-150.273000
392023-05-120.125000
402024-08-150.300000
412025-02-140.307000
422026-02-130.277000
432021-12-160.100000
442022-06-140.100000
452023-03-140.125000
462025-07-150.294000
472023-09-140.125000
482026-06-150.273000
492025-04-150.304000
502025-06-130.297000
512026-03-130.277000
522022-04-130.100000
532023-01-120.100000
542024-01-110.150000
552024-04-120.150000
562023-04-130.125000
572026-07-150.269000
582026-08-140.269000