f/overrides/event-backup/gsrfx-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

835 B

1DateDividends
22026-06-290.054000
32022-09-290.055000
42023-06-290.211000
52025-09-290.059000
62022-12-131.336000
72023-12-220.037000
82024-03-270.062000
92025-03-280.058000
102026-03-300.053000
112018-12-119.043000
122020-03-300.049000
132020-06-290.062000
142025-06-270.056000
152018-03-290.063000
162020-12-140.043000
172021-06-290.066000
182025-12-300.032000
192018-09-270.233000
202020-09-290.087000
212020-12-300.281000
222021-03-300.067000
232022-06-290.066000
242025-12-111.168000
252023-12-130.679000
262024-06-270.063000
272019-03-280.133000
282021-12-300.055000
292022-03-300.057000
302021-12-141.169000
312023-03-300.114000
322024-12-121.346000
332018-03-280.070000
342019-12-120.981000
352019-12-180.079000
362022-12-290.112000
372023-09-280.080000
382024-09-270.059000
392024-12-300.048000
402018-06-280.110000
412019-06-270.066000
422019-09-270.068000