f/overrides/event-backup/dfwvx-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
22018-09-270.072000
32019-09-270.073000
42023-09-280.119000
52014-12-160.093000
62015-09-090.055000
72018-03-280.006000
82026-06-290.194000
92013-09-100.038000
102016-06-290.141000
112017-03-300.022000
122024-09-270.161000
132025-09-290.154000
142013-03-080.007000
152014-09-090.071000
162023-03-300.005000
172011-12-130.087000
182016-03-300.036000
192020-09-290.064000
202012-09-100.030000
212015-06-080.127000
222018-06-280.142000
232023-06-290.221000
242012-06-080.139000
252013-06-100.172000
262015-12-160.087000
272021-03-300.016000
282025-12-150.260000
292019-03-280.022000
302013-12-120.077000
312021-09-290.119000
322022-09-290.126000
332024-06-270.204000
342025-06-270.217000
352012-12-130.098000
362020-06-290.102000
372018-12-180.322000
382019-06-270.161000
392021-06-290.132000
402022-12-140.137000
412025-03-280.020000
422021-12-150.231000
432017-06-290.134000
442017-12-150.195000
452019-12-170.098000
462012-03-080.004000
472014-03-100.114000
482014-06-090.159000
492016-09-290.041000
502016-12-150.086000
512020-12-160.098000
522022-06-290.153000
532026-03-300.049000
542020-03-300.005000
552023-12-130.191000
562024-03-270.017000
572024-12-130.166000