f/overrides/event-backup/canax-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

835 B

1DateDividends
22025-06-130.085000
32019-03-220.016000
42018-06-220.039000
52021-06-180.050000
62022-09-160.055000
72023-06-160.060000
82017-12-150.151000
92016-09-160.019000
102018-12-240.237000
112021-12-200.058000
122022-12-190.314000
132024-03-150.070000
142024-12-180.070000
152016-06-170.013000
162019-12-230.248000
172020-09-180.040000
182017-06-160.018000
192020-03-200.031000
202020-06-190.050000
212022-06-170.065000
222024-09-200.065000
232026-06-170.095000
242016-12-160.110000
252021-09-170.055000
262023-03-170.060000
272023-09-150.076000
282018-09-210.049000
292019-06-210.043000
302019-09-200.010000
312022-03-180.066000
322023-12-180.075000
332024-06-140.070000
342025-09-190.090000
352025-12-170.089000
362017-09-150.018000
372026-03-190.095000
382018-03-230.018000
392020-12-210.333000
402021-03-190.035000
412025-03-140.080000
422017-03-170.019000