f/overrides/event-backup/mxjux-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

615 B

1DateDividends
22017-09-080.096000
32018-09-110.221000
42022-09-080.352000
52018-06-270.095000
62020-06-260.071000
72024-09-100.150000
82015-12-300.310000
92020-12-300.037000
102021-09-070.137000
112024-12-300.266000
122015-06-240.086000
132017-06-270.089000
142017-12-280.275000
152023-06-270.085000
162018-12-280.348000
172019-06-260.091000
182022-06-270.067000
192023-12-280.216000
202025-12-300.296000
212016-09-090.165000
222020-09-080.124000
232022-12-290.203000
242025-09-090.172000
252016-06-280.103000
262019-09-100.396000
272021-06-250.058000
282016-12-290.164000
292019-12-300.174000
302021-12-300.473000
312023-09-080.149000