f/dis-dividend.csv at bb8e39605ef99b652f313b9fbf152f26d568e613

gmp/f

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

3.6 KiB

Raw Blame History

1	Date	Dividends	ctime
2	1988-07-11	0.0996	2020-04-10 11:13:59
3	1992-01-06	0.1752	2020-04-10 11:13:59
4	1992-07-06	0.0525	2020-04-10 11:13:59
5	2011-12-14	0.6	2020-04-10 11:13:59
6	2015-12-10	0.71	2020-04-10 11:13:59
7	1982-03-08	0.00617	2020-04-10 11:13:59
8	1988-01-12	0.0804	2020-04-10 11:13:59
9	1996-10-09	0.1101	2020-04-10 11:13:59
10	2017-07-06	0.78	2020-04-10 11:13:59
11	1992-10-05	0.0525	2020-04-10 11:13:59
12	1995-12-29	0.09	2020-04-10 11:13:59
13	1985-12-09	0.00617	2020-04-10 11:13:59
14	1997-04-09	0.1326	2020-04-10 11:13:59
15	1988-10-07	0.0996	2020-04-10 11:13:59
16	1987-09-16	0.0804	2020-04-10 11:13:59
17	1989-04-10	0.12	2020-04-10 11:13:59
18	1993-04-05	0.0624	2020-04-10 11:13:59
19	1987-06-01	0.0804	2020-04-10 11:13:59
20	1997-07-09	0.1326	2020-04-10 11:13:59
21	2019-12-13	0.88	2020-04-10 11:13:59
22	1997-10-15	0.1326	2020-04-10 11:13:59
23	1986-03-12	0.0804	2020-04-10 11:13:59
24	2002-12-11	0.21	2020-04-10 11:13:59
25	1982-11-29	0.00617	2020-04-10 11:13:59
26	1989-01-09	0.0996	2020-04-10 11:13:59
27	1991-07-08	0.1752	2020-04-10 11:13:59
28	1993-01-05	0.0525	2020-04-10 11:13:59
29	2016-12-08	0.78	2020-04-10 11:13:59
30	1983-03-07	0.00617	2020-04-10 11:13:59
31	1995-07-06	0.09	2020-04-10 11:13:59
32	1995-10-11	0.09	2020-04-10 11:13:59
33	1985-05-30	0.00617	2020-04-10 11:13:59
34	1999-10-07	0.05228	2020-04-10 11:13:59
35	1982-06-28	0.00617	2020-04-10 11:13:59
36	2016-07-07	0.71	2020-04-10 11:13:59
37	1991-10-07	0.1752	2020-04-10 11:13:59
38	2012-12-06	0.75	2020-04-10 11:13:59
39	2008-12-11	0.35	2020-04-10 11:13:59
40	1982-09-27	0.00617	2020-04-10 11:13:59
41	1996-04-10	0.1101	2020-04-10 11:13:59
42	1986-09-15	0.0804	2020-04-10 11:13:59
43	2007-06-13	0.0	2020-04-10 11:13:59
44	1992-04-06	0.21	2020-04-10 11:13:59
45	1986-06-02	0.0804	2020-04-10 11:13:59
46	1983-07-01	0.00617	2020-04-10 11:13:59
47	1986-12-02	0.0804	2020-04-10 11:13:59
48	1987-03-09	0.0804	2020-04-10 11:13:59
49	1988-04-13	0.0996	2020-04-10 11:13:59
50	1996-07-10	0.1101	2020-04-10 11:13:59
51	1997-01-08	0.1101	2020-04-10 11:13:59
52	1983-10-07	0.00617	2020-04-10 11:13:59
53	2007-12-05	0.35	2020-04-10 11:13:59
54	2003-12-10	0.21	2020-04-10 11:13:59
55	1990-01-08	0.12	2020-04-10 11:13:59
56	1990-07-09	0.1452	2020-04-10 11:13:59
57	1994-01-04	0.0624	2020-04-10 11:13:59
58	1994-07-05	0.075	2020-04-10 11:13:59
59	2013-12-12	0.86	2020-04-10 11:13:59
60	2017-12-08	0.84	2020-04-10 11:13:59
61	1998-10-07	0.0525	2020-04-10 11:13:59
62	1990-04-06	0.1452	2020-04-10 11:13:59
63	1999-11-12	0.21	2020-04-10 11:13:59
64	1984-03-08	0.00617	2020-04-10 11:13:59
65	2000-12-06	0.21	2020-04-10 11:13:59
66	2019-07-05	0.88	2020-04-10 11:13:59
67	2009-12-10	0.35	2020-04-10 11:13:59
68	2015-07-01	0.66	2020-04-10 11:13:59
69	1994-10-07	0.075	2020-04-10 11:13:59
70	1983-12-12	0.00617	2020-04-10 11:13:59
71	1990-10-05	0.1452	2020-04-10 11:13:59
72	1991-04-08	0.1752	2020-04-10 11:13:59
73	1998-01-07	0.1326	2020-04-10 11:13:59
74	1985-09-10	0.00617	2020-04-10 11:13:59
75	1995-04-07	0.09	2020-04-10 11:13:59
76	2004-12-08	0.24	2020-04-10 11:13:59
77	1989-07-10	0.12	2020-04-10 11:13:59
78	1995-01-03	0.075	2020-04-10 11:13:59
79	2014-12-11	1.15	2020-04-10 11:13:59
80	2018-12-07	0.88	2020-04-10 11:13:59
81	1985-03-05	0.00617	2020-04-10 11:13:59
82	2001-12-05	0.21	2020-04-10 11:13:59
83	2018-07-06	0.84	2020-04-10 11:13:59
84	2006-12-13	0.31	2020-04-10 11:13:59
85	2010-12-09	0.4	2020-04-10 11:13:59
86	1993-10-06	0.0624	2020-04-10 11:13:59
87	1993-07-02	0.0624	2020-04-10 11:13:59
88	1998-07-22	0.0535127	2020-04-10 11:13:59
89	2005-12-08	0.27	2020-04-10 11:13:59
90	1994-04-11	0.075	2020-04-10 11:13:59
91	1998-04-07	0.1575	2020-04-10 11:13:59
92	1989-10-06	0.12	2020-04-10 11:13:59
93	1991-01-14	0.1452	2020-04-10 11:13:59
94	1984-12-04	0.00617	2020-04-10 11:13:59
95	1984-06-07	0.00617	2020-04-10 11:13:59
96	1984-09-13	0.00617	2020-04-10 11:13:59

3.6 KiB Raw Blame History

3.6 KiB

Raw Blame History