f/overrides/event-backup/jrgrx-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

735 B

1DateDividends
22017-12-150.459000
32022-06-230.120000
42026-03-240.108000
52017-09-250.075000
62019-03-250.118000
72020-03-250.138000
82020-06-240.152000
92021-12-171.469000
102022-09-230.166000
112018-03-260.065000
122019-06-240.123000
132021-06-240.123000
142022-03-240.114000
152025-03-240.122000
162025-12-192.254000
172021-03-250.108000
182023-06-230.172000
192023-09-220.144000
202023-12-190.308000
212024-03-210.117000
222024-06-210.165000
232018-06-250.078000
242018-09-240.095000
252020-09-240.149000
262021-09-230.132000
272022-12-191.293000
282023-03-240.144000
292024-09-230.173000
302024-12-202.419000
312025-06-230.157000
322026-06-230.156000
332019-09-240.138000
342018-12-140.303000
352019-12-130.211000
362020-12-180.235000
372025-09-230.142000