f/overrides/event-backup/fndb-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

1.0 KiB

1DateDividends
22020-12-100.078000
32021-03-240.062333
42021-09-220.081333
52015-06-290.053333
62016-06-270.061000
72025-12-100.120000
82020-09-230.098333
92023-03-220.083000
102017-04-030.049333
112016-10-030.057667
122017-06-260.057000
132023-09-200.087333
142014-06-300.042667
152015-03-300.049333
162015-12-210.056000
172025-09-240.109000
182020-06-240.071333
192016-12-190.056333
202019-06-260.073667
212026-06-240.110000
222013-10-010.011667
232017-09-180.064333
242024-12-110.115000
252015-09-280.056000
262017-12-180.067333
272022-12-070.098667
282025-03-260.098000
292019-03-200.069667
302023-12-060.106000
312018-03-160.055667
322024-06-260.101667
332019-09-250.068333
342020-03-250.074000
352022-03-230.070667
362018-09-250.068333
372018-12-120.074000
382024-03-200.090333
392021-06-230.071333
402024-09-250.098000
412021-12-080.097333
422021-12-300.002667
432023-06-210.090667
442025-06-250.104000
452013-12-230.032333
462019-12-120.102333
472016-03-210.048333
482022-09-210.089333
492026-03-250.105000
502018-06-260.071333
512022-06-220.088667
522014-03-310.035667
532014-09-290.041333
542014-12-220.045667