f/overrides/event-backup/aemgx-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

815 B

1DateDividends
22022-12-220.194000
32008-12-182.986000
42009-12-300.134000
52012-12-280.317000
62013-12-300.212000
72018-12-280.326000
82019-12-300.370000
91999-12-160.113000
102003-12-150.050000
112010-12-300.183000
122014-12-300.212000
131998-12-160.090000
142005-06-290.016000
152020-12-300.291000
162016-12-290.331000
172017-12-280.290000
182024-12-300.639000
191996-12-160.154000
202000-12-190.059000
212005-12-290.372000
222007-12-280.479000
232005-12-152.267000
242006-12-145.530000
252008-12-300.540000
262021-12-300.699000
272025-12-300.530000
281997-12-150.646000
292002-12-310.053000
302004-12-160.462000
312007-12-138.648000
322021-12-220.039000
332023-12-280.792000
342025-12-180.660000
352001-12-180.006000
362004-12-300.085000
372006-12-280.510000
382011-12-290.328000
392015-12-300.189000
402022-12-291.073000
412024-12-200.127000