f/overrides/event-backup/msdrx-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

2.8 KiB

1DateDividends
22025-07-310.033000
32014-11-280.012000
42019-02-280.024000
52021-04-300.010000
62023-07-310.029000
72017-09-290.017000
82018-02-280.019000
92025-12-310.031000
102022-08-310.020000
112024-09-300.035000
122016-02-290.015000
132017-12-290.020000
142018-09-280.023000
152022-04-290.013000
162019-09-300.022000
172021-09-300.010000
182022-07-290.019000
192023-02-280.023000
202025-09-300.033000
212019-07-310.022000
222020-08-310.017000
232023-05-310.027000
242024-12-310.035000
252021-02-260.011000
262015-06-300.013000
272015-10-300.016000
282015-11-300.015000
292017-02-280.015000
302016-06-300.017000
312017-01-310.016000
322021-03-310.010000
332024-05-310.038000
342014-12-310.012000
352017-07-310.017000
362022-05-310.016000
372026-05-290.027000
382024-01-310.035000
392025-01-310.034000
402016-11-300.017000
412016-12-300.016000
422019-05-310.024000
432020-10-300.014000
442020-03-310.022000
452020-12-310.012000
462021-01-290.011000
472023-08-310.032000
482015-01-300.013000
492016-04-290.016000
502017-05-310.016000
512018-11-300.023000
522022-03-310.013000
532015-08-310.016000
542016-01-290.016000
552020-11-300.013000
562021-08-310.010000
572025-02-280.034000
582025-10-310.032000
592016-08-310.018000
602017-10-310.018000
612018-07-310.022000
622021-05-280.010000
632016-03-310.015000
642026-04-300.028000
652023-10-310.034000
662015-04-300.014000
672016-10-310.017000
682019-08-300.022000
692020-05-290.021000
702021-11-300.011000
712022-12-300.023000
722024-10-310.035000
732025-06-300.034000
742017-03-310.015000
752017-11-300.018000
762018-05-310.020000
772019-10-310.022000
782026-03-310.029000
792026-06-300.027000
802018-12-310.025000
812020-04-300.021000
822023-06-300.028000
832017-06-300.016000
842019-03-290.025000
852022-02-280.011000
862025-05-300.034000
872020-09-300.015000
882022-01-310.011000
892022-11-300.022000
902023-01-310.023000
912015-12-310.016000
922016-07-290.017000
932018-03-290.019000
942020-07-310.018000
952023-04-280.026000
962024-07-310.037000
972025-03-310.035000
982015-07-310.015000
992015-09-300.016000
1002021-07-300.010000
1012023-11-300.035000
1022014-10-310.012000
1032016-05-310.016000
1042019-04-300.023000
1052024-06-280.037000
1062025-11-280.031000
1072026-02-270.028000
1082019-11-290.021000
1092020-02-280.022000
1102023-03-310.024000
1112024-04-300.036000
1122024-08-300.037000
1132025-04-300.034000
1142018-04-300.020000
1152019-12-310.024000
1162023-09-290.034000
1172023-12-290.036000
1182024-02-290.035000
1192024-03-280.035000
1202025-08-290.033000
1212016-09-300.018000
1222019-01-310.025000
1232021-10-290.011000
1242021-12-310.011000
1252017-04-280.016000
1262019-06-280.023000
1272020-01-310.020000
1282026-01-300.029000
1292024-11-290.035000
1302015-02-270.012000
1312018-01-310.019000
1322021-06-300.010000
1332015-05-290.013000
1342018-10-310.024000
1352022-10-310.020000
1362026-07-310.027000
1372017-08-310.017000
1382018-06-290.021000
1392022-06-300.017000
1402022-09-300.020000
1412015-03-310.013000
1422018-08-310.023000
1432020-06-300.020000