f/overrides/event-backup/dismx-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

955 B

1DateDividends
22017-09-280.052000
32025-09-290.102000
42019-06-270.152000
52015-06-080.126000
62015-09-090.039000
72015-12-160.204000
82016-06-290.124000
92017-03-300.024000
102018-06-280.154000
112018-12-180.446000
122022-09-290.061000
132022-12-140.076000
142023-06-290.150000
152024-06-270.115000
162014-12-160.170000
172019-12-170.123000
182020-03-300.012000
192021-09-290.051000
202025-12-150.098000
212026-03-300.015000
222016-03-300.029000
232020-09-290.052000
242023-09-280.055000
252024-09-270.104000
262025-03-280.017000
272016-09-290.037000
282016-12-150.092000
292018-09-270.064000
302021-06-290.116000
312021-12-150.981000
322025-06-270.150000
332019-03-280.018000
342022-06-290.153000
352024-03-270.008000
362024-12-130.140000
372017-06-290.134000
382017-12-150.459000
392018-03-280.032000
402020-06-290.063000
412020-12-160.067000
422023-03-300.005000
432023-12-130.113000
442015-03-090.026000
452019-09-270.059000
462021-03-300.015000
472022-03-300.008000
482026-06-290.158000