f/overrides/event-backup/nwhgx-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

715 B

1DateDividends
22022-12-210.409000
32024-09-090.079000
42024-12-192.015000
52016-12-160.074000
62018-12-190.079000
72020-09-080.021000
82020-12-290.002000
92013-12-133.092000
102020-12-210.083000
112023-12-200.319000
122023-12-280.012000
132024-06-100.028000
142014-12-161.520000
152017-09-110.022000
162021-06-070.004000
172022-09-120.040000
182014-06-130.011000
192016-09-120.015000
202017-12-181.546000
212021-12-210.788000
222023-09-110.029000
232025-12-181.737000
242026-03-180.013000
252015-12-170.098000
262018-12-181.404000
272019-09-090.005000
282021-12-220.720000
292023-06-120.042000
302018-09-100.026000
312019-12-180.072000
322021-09-070.029000
332023-12-210.134000
342015-06-120.012000
352015-09-100.030000
362022-06-060.011000