f/overrides/event-backup/dilrx-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
22014-12-160.127000
32016-06-290.114000
42019-09-270.066000
52021-12-150.050000
62022-03-300.061000
72026-03-300.022000
82026-06-290.156000
92016-03-300.051000
102018-06-280.139000
112018-09-270.059000
122024-09-270.065000
132015-06-080.121000
142019-03-280.064000
152019-06-270.114000
162020-09-290.069000
172023-12-130.049000
182025-09-290.069000
192016-09-290.041000
202017-12-150.048000
212020-12-160.031000
222022-09-290.085000
232024-12-130.069000
242025-12-150.122000
252016-12-150.050000
262021-09-290.093000
272022-06-290.168000
282023-03-300.066000
292023-09-280.069000
302024-06-270.126000
312025-06-270.168000
322015-09-090.049000
332018-03-280.047000
342019-12-170.046000
352015-03-090.043000
362017-03-300.045000
372018-12-180.041000
382020-06-290.066000
392021-03-300.063000
402021-06-290.105000
412023-06-290.128000
422015-12-160.044000
432017-06-290.116000
442017-09-280.047000
452020-03-300.043000
462022-12-140.039000
472024-03-270.064000
482025-03-280.030000