f/overrides/event-backup/atrfx-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

975 B

1DateDividends
22023-05-300.012000
32023-12-280.033000
42025-12-300.001000
52026-03-300.005000
62015-12-210.099000
72023-03-300.016000
82018-12-140.106000
92023-11-290.029000
102024-04-290.023000
112024-06-270.019000
122024-09-270.016000
132024-12-300.866000
142014-12-180.063000
152016-12-290.086000
162025-03-280.009000
172025-10-300.004000
182019-03-280.045000
192022-12-130.502000
202023-09-280.030000
212024-05-300.027000
222024-11-270.017000
232025-08-280.006000
242019-01-300.045000
252019-02-270.027000
262025-04-290.009000
272023-07-280.019000
282023-08-300.032000
292024-08-290.196000
302025-01-300.013000
312026-01-290.013000
322023-04-270.013000
332023-06-290.017000
342025-09-290.005000
352019-12-190.156000
362024-01-300.016000
372024-03-270.021000
382024-10-300.019000
392025-06-270.008000
402019-04-290.024000
412021-12-140.600000
422024-02-280.021000
432024-07-300.019000
442025-02-270.010000
452025-05-290.008000
462025-07-300.008000
472025-11-260.003000
482020-12-211.939000
492023-10-300.029000