f/overrides/event-backup/drirx-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

875 B

1DateDividends
22021-03-300.023000
32026-03-300.005000
42018-03-280.004000
52019-09-270.074000
62020-06-290.015000
72023-03-300.015000
82023-06-290.126000
92023-09-280.114000
102017-06-290.080000
112018-09-270.082000
122020-12-160.289000
132024-09-270.050000
142015-12-160.021000
152022-03-300.089000
162024-06-270.161000
172022-09-290.285000
182016-06-290.072000
192017-12-150.153000
202019-06-270.103000
212021-09-290.212000
222025-06-270.123000
232026-06-290.177000
242017-09-280.029000
252019-12-170.109000
262023-12-130.135000
272025-03-280.041000
282016-03-300.018000
292016-09-290.045000
302017-03-300.035000
312021-06-290.175000
322021-12-150.569000
332022-06-290.256000
342025-09-290.099000
352018-06-280.101000
362019-03-280.009000
372020-09-290.059000
382022-12-140.140000
392024-03-270.003000
402024-12-130.238000
412025-12-150.427000
422016-12-150.081000
432018-12-180.081000
442020-03-300.034000