f/overrides/event-backup/dxjs-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

675 B

1DateDividends
22015-12-210.549260
32020-12-210.271790
42021-12-270.398670
52013-12-240.031900
62022-06-240.302500
72016-12-230.100920
82018-06-250.379490
92023-03-270.245000
102025-12-260.239810
112026-03-260.055000
122026-06-250.340000
132015-06-220.064465
142022-12-230.280720
152024-09-250.015000
162025-06-250.575000
172025-09-250.010000
182017-06-260.270000
192023-06-260.222520
202023-12-220.340000
212017-12-260.080475
222016-06-200.197500
232019-06-240.217420
242019-09-240.005000
252014-06-230.119300
262020-06-230.334585
272021-09-240.005000
282024-03-220.250000
292024-06-250.099100
302019-12-230.238650
312017-09-260.000595
322021-06-240.237265
332024-12-261.024700
342014-12-191.197360