f/overrides/event-backup/dusqx-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

1.0 KiB

1DateDividends
22014-03-100.036000
32015-03-090.040000
42016-03-300.062000
52018-03-280.042000
62023-12-131.043000
72013-12-120.061000
82019-09-270.078000
92021-09-290.092000
102021-12-150.916000
112022-03-300.079000
122022-12-140.809000
132026-06-290.106000
142014-06-090.051000
152020-03-300.078000
162020-09-290.082000
172020-12-160.096000
182022-06-290.097000
192022-09-290.095000
202024-06-270.090000
212025-06-270.099000
222015-12-160.072000
232016-09-290.051000
242017-12-150.085000
252018-09-270.073000
262019-12-170.108000
272021-06-290.082000
282023-03-300.089000
292024-03-270.094000
302013-09-100.030000
312025-03-280.089000
322015-06-080.058000
332019-03-280.065000
342025-12-150.081000
352026-03-300.101000
362014-09-090.052000
372016-12-150.078000
382018-06-280.068000
392018-12-180.090000
402020-06-290.073000
412023-09-280.081000
422016-06-290.059000
432015-09-090.049000
442017-03-300.056000
452017-06-290.063000
462021-03-300.073000
472024-12-130.082000
482025-09-290.099000
492014-12-160.078000
502019-06-270.076000
512023-06-290.091000
522024-09-270.092000
532017-09-280.065000