f/overrides/event-backup/emif-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

755 B

1DateDividends
22026-06-150.285000
32010-12-290.107000
42011-12-190.360000
52012-06-200.482000
62016-06-210.562000
72018-06-190.360000
82012-12-270.171000
92016-12-220.324000
102017-06-200.214000
112023-12-200.341000
122010-12-200.161000
132014-12-190.553000
142015-12-210.190000
152019-12-160.237000
162024-12-300.026000
172017-12-210.634000
182018-12-180.369000
192022-12-130.335000
202024-06-110.348000
212025-12-160.824000
222013-06-250.528000
232014-06-240.452000
242020-06-150.301000
252021-06-100.680000
262025-06-160.489000
272009-12-210.027000
282011-06-210.628000
292021-12-130.286000
302023-06-070.225000
312010-06-210.634000
322020-12-140.322000
332024-12-170.484000
342012-12-170.383000
352013-12-170.452000
362015-06-240.374000
372019-06-170.414000
382022-06-090.305000