f/overrides/event-backup/nwwux-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

795 B

1DateDividends
22016-03-150.015000
32018-12-200.663000
42019-03-120.017000
52020-12-230.354000
62021-12-231.046000
72024-06-130.036000
82017-06-130.057000
92018-03-130.018000
102023-09-140.004000
112025-12-231.100000
122026-06-240.045000
132014-12-190.130000
142022-06-090.035000
152023-12-220.474000
162026-03-250.012000
172015-09-150.029000
182018-06-120.065000
192019-09-120.041000
202019-12-230.774000
212025-06-120.050000
222015-12-210.202000
232016-09-150.021000
242016-12-190.359000
252021-09-090.031000
262022-09-150.016000
272024-09-120.032000
282015-06-160.053000
292015-03-170.012000
302016-06-140.052000
312017-03-140.012000
322017-12-200.477000
332018-09-120.035000
342020-09-100.450000
352017-09-140.034000
362019-06-110.058000
372022-12-230.206000
382023-06-150.044000
392024-12-231.454000
402025-09-110.032000