f/jpm-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

3.4 KiB

Raw Blame History

1	Date	Dividends
2	1995-03-31	0.146667
3	2006-04-04	0.340000
4	2007-10-03	0.380000
5	1987-12-09	0.226667
6	1990-12-10	0.083333
7	1991-03-11	0.083333
8	2000-10-04	0.320000
9	2012-07-03	0.300000
10	2021-04-05	0.900000
11	1998-01-02	0.206667
12	2018-04-05	0.560000
13	2025-10-06	1.500000
14	2026-07-06	1.500000
15	1996-07-02	0.186667
16	2004-10-04	0.340000
17	2010-07-01	0.050000
18	1998-10-02	0.240000
19	2002-04-03	0.340000
20	2006-01-04	0.340000
21	2011-04-04	0.250000
22	2024-01-04	1.050000
23	1993-03-31	0.110000
24	1996-01-03	0.166667
25	1997-04-02	0.206667
26	2001-01-03	0.320000
27	2002-01-02	0.340000
28	2013-04-03	0.300000
29	2020-10-05	0.900000
30	2021-07-02	0.900000
31	2025-01-06	1.250000
32	1993-06-29	0.110000
33	1995-10-04	0.166667
34	1998-04-02	0.240000
35	2013-10-02	0.380000
36	2021-01-05	0.900000
37	2021-10-05	1.000000
38	1984-06-11	0.196667
39	1989-09-11	0.226667
40	1991-12-23	0.016333
41	1997-07-01	0.206667
42	2000-01-04	0.273333
43	2000-04-04	0.320000
44	2009-10-02	0.050000
45	1986-12-09	0.216667
46	1989-03-09	0.226667
47	1992-03-31	0.100000
48	1994-03-30	0.126667
49	1999-10-04	0.273333
50	2005-10-04	0.340000
51	1992-06-29	0.100000
52	2019-07-03	0.800000
53	2022-04-05	1.000000
54	2026-04-06	1.500000
55	2004-01-02	0.340000
56	2009-01-02	0.380000
57	2017-01-04	0.480000
58	1984-09-10	0.196667
59	1985-09-09	0.206667
60	2016-04-04	0.440000
61	2020-07-02	0.900000
62	1990-06-11	0.226667
63	1999-01-04	0.240000
64	2005-01-04	0.340000
65	2017-04-04	0.500000
66	2017-07-03	0.500000
67	1985-03-11	0.206667
68	1994-06-29	0.126667
69	2005-07-01	0.340000
70	2009-07-01	0.050000
71	2014-07-01	0.400000
72	2019-04-04	0.800000
73	2020-04-03	0.900000
74	2022-01-05	1.000000
75	2025-07-03	1.400000
76	1985-12-09	0.206667
77	1991-06-10	0.083333
78	1999-07-01	0.273333
79	2003-04-02	0.340000
80	2003-07-01	0.340000
81	2006-10-04	0.340000
82	2011-07-01	0.250000
83	2015-04-01	0.400000
84	2024-07-05	1.150000
85	1987-09-09	0.226667
86	1991-09-09	0.083333
87	2011-01-04	0.050000
88	2015-10-02	0.440000
89	2023-07-05	1.000000
90	1984-03-09	0.196667
91	1985-06-10	0.206667
92	1987-06-09	0.226667
93	1991-12-09	0.083333
94	1992-09-30	0.100000
95	2003-10-02	0.340000
96	2010-01-04	0.050000
97	2012-10-03	0.300000
98	2001-07-03	0.340000
99	2014-01-02	0.380000
100	2016-01-04	0.440000
101	1988-03-09	0.226667
102	1994-09-30	0.146667
103	1997-10-02	0.206667
104	2012-01-04	0.250000
105	2017-10-05	0.560000
106	1993-09-30	0.110000
107	2007-01-03	0.340000
108	2018-07-05	0.560000
109	2023-10-05	1.050000
110	2024-04-04	1.150000
111	1986-06-09	0.216667
112	1986-09-09	0.216667
113	1997-01-02	0.186667
114	2002-07-02	0.340000
115	2013-01-02	0.300000
116	2019-10-03	0.900000
117	1988-12-09	0.226667
118	1992-12-30	0.100000
119	2013-07-02	0.380000
120	2016-07-01	0.480000
121	2016-10-04	0.480000
122	2018-01-04	0.560000
123	2019-01-03	0.800000
124	2001-10-03	0.340000
125	2002-10-02	0.340000
126	2015-07-01	0.440000
127	2020-01-03	0.900000
128	2008-04-02	0.380000
129	2010-04-01	0.050000
130	2022-07-05	1.000000
131	1990-09-10	0.226667
132	1993-12-31	0.126667
133	1999-04-01	0.273333
134	2004-04-02	0.340000
135	2008-10-02	0.380000
136	2014-10-02	0.400000
137	1984-12-10	0.196667
138	1986-03-10	0.216667
139	1988-09-09	0.226667
140	2005-04-04	0.340000
141	2009-04-02	0.050000
142	2012-04-03	0.300000
143	2014-04-02	0.380000
144	2022-10-05	1.000000
145	1987-03-09	0.226667
146	1989-06-09	0.226667
147	1994-12-30	0.146667
148	1995-07-03	0.166667
149	2003-01-02	0.340000
150	2006-07-03	0.340000
151	1988-06-09	0.226667
152	2008-01-02	0.380000
153	2011-10-04	0.250000
154	2023-01-05	1.000000
155	2026-01-06	1.500000
156	1989-12-11	0.226667
157	1990-03-09	0.226667
158	2008-07-01	0.380000
159	2015-01-02	0.400000
160	1996-04-02	0.062333
161	1996-10-02	0.186667
162	1998-07-01	0.240000
163	2000-07-03	0.320000
164	2001-04-04	0.340000
165	2004-07-01	0.340000
166	2007-04-03	0.340000
167	2007-07-03	0.380000
168	2010-10-04	0.050000
169	2023-04-05	1.000000
170	2024-10-04	1.250000
171	2018-10-04	0.800000
172	2025-04-04	1.400000

3.4 KiB Raw Blame History

3.4 KiB

Raw Blame History