f/overrides/event-backup/dfsix-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

1.4 KiB

1DateDividends
22015-12-160.250000
32016-03-300.067000
42018-09-270.077000
52019-09-270.081000
62009-06-090.032000
72012-06-080.043000
82025-06-270.124000
92017-06-290.069000
102010-12-090.049000
112012-03-080.021000
122013-03-080.028000
132013-09-100.053000
142016-06-290.062000
152016-12-150.234000
162009-12-090.042000
172018-12-180.261000
182021-09-290.103000
192022-09-290.103000
202021-03-300.079000
212026-03-300.120000
222015-06-080.060000
232017-09-280.074000
242021-12-150.524000
252023-03-300.105000
262024-12-130.103000
272025-12-150.103000
282009-03-100.026000
292024-03-270.120000
302014-09-090.056000
312017-12-150.301000
322018-06-280.071000
332019-12-170.276000
342021-06-290.086000
352026-06-290.135000
362010-06-080.027000
372012-09-100.042000
382013-12-120.176000
392019-03-280.068000
402019-06-270.079000
412022-03-300.085000
422022-12-140.116000
432010-03-090.018000
442010-09-080.041000
452011-09-080.035000
462014-12-160.302000
472017-03-300.060000
482020-09-290.076000
492015-09-090.061000
502016-09-290.052000
512018-03-280.037000
522023-06-290.107000
532024-06-270.112000
542025-03-280.116000
552009-09-090.030000
562011-03-080.021000
572015-03-090.049000
582020-06-290.077000
592023-12-130.131000
602008-06-100.028000
612011-06-080.035000
622013-06-100.047000
632014-03-100.036000
642014-06-090.056000
652020-12-160.122000
662008-09-090.037000
672008-12-100.059000
682011-12-130.059000
692020-03-300.081000
702022-06-290.103000
712025-09-290.120000
722012-12-130.141000
732023-09-280.110000
742024-09-270.116000