f/awshx-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

3.8 KiB

Raw Blame History

1	Date	Dividends
2	1995-09-22	0.145000
3	2005-03-18	0.140000
4	2011-12-16	0.225000
5	2022-09-14	0.205000
6	1981-10-30	0.100000
7	1982-01-29	0.100000
8	1985-04-19	0.120000
9	1994-06-01	0.050000
10	2012-09-21	0.165000
11	2014-03-21	0.180000
12	2017-06-16	1.240000
13	1984-04-16	0.130000
14	1990-11-01	0.050000
15	2006-03-17	0.160000
16	2006-12-22	1.005000
17	2004-09-17	0.140000
18	2016-09-16	0.190000
19	2024-06-12	2.979000
20	1983-10-31	0.110000
21	1987-04-24	0.130000
22	1990-12-03	0.050000
23	2002-12-20	0.174000
24	1991-09-20	0.140000
25	1991-12-20	0.140000
26	1998-09-18	0.145000
27	2017-03-17	0.195000
28	1984-11-02	0.120000
29	1985-02-04	0.120000
30	1988-08-05	0.130000
31	1991-03-22	0.140000
32	2023-06-14	1.550000
33	1983-04-25	0.130000
34	1989-03-17	0.140000
35	2009-06-19	0.175000
36	2023-03-15	0.205000
37	2010-12-17	0.220000
38	2012-03-23	0.165000
39	2014-06-20	0.180000
40	2015-09-18	0.185000
41	1986-02-04	0.120000
42	1997-03-21	0.145000
43	2001-03-15	0.145000
44	2002-10-18	0.033000
45	2019-09-13	0.203000
46	2024-03-13	0.205000
47	2003-03-28	0.135000
48	2007-06-22	0.180000
49	2019-12-20	1.749000
50	1980-10-31	0.090000
51	1983-07-29	0.110000
52	1989-06-16	0.140000
53	1992-03-20	0.140000
54	1990-06-22	0.140000
55	2005-09-16	0.150000
56	2025-12-18	3.244000
57	2005-12-16	0.590000
58	2011-03-18	0.155000
59	2016-06-17	0.190000
60	2024-09-18	0.205000
61	1981-04-21	0.130000
62	1986-04-18	0.130000
63	1995-03-17	0.145000
64	1999-06-18	0.145000
65	2013-12-20	1.115000
66	2020-03-18	0.205000
67	2023-09-13	0.205000
68	1988-11-04	0.130000
69	1994-03-18	0.140000
70	1998-12-18	2.770000
71	2006-09-15	0.160000
72	2018-06-15	1.682000
73	2025-03-12	0.205000
74	1982-04-21	0.130000
75	1987-02-02	0.130000
76	1994-09-16	0.040000
77	2008-12-19	0.675000
78	2012-12-21	0.225000
79	2018-03-16	0.200000
80	2020-12-18	0.920000
81	1980-07-31	0.090000
82	2000-12-22	2.640000
83	2008-06-20	0.180000
84	2009-03-20	0.180000
85	1998-03-20	0.145000
86	2001-06-22	0.135000
87	2006-06-16	0.160000
88	2015-06-19	0.185000
89	2003-09-19	0.135000
90	2011-06-17	0.155000
91	2015-03-20	0.185000
92	2020-06-17	0.205000
93	1980-04-28	0.130000
94	1984-08-02	0.110000
95	1992-12-24	0.140000
96	1994-12-23	0.610000
97	2023-12-15	1.550000
98	2016-12-19	2.040000
99	1990-09-21	0.140000
100	1994-08-01	0.050000
101	2003-12-19	0.320000
102	2009-12-18	0.175000
103	2022-03-16	0.205000
104	1983-01-31	0.110000
105	2013-06-21	0.175000
106	2014-12-22	2.344000
107	2015-12-18	1.846000
108	1986-11-03	0.130000
109	2004-06-18	0.135000
110	2021-09-15	0.205000
111	2024-12-19	2.805000
112	2014-09-19	0.180000
113	2025-06-11	2.918000
114	1981-07-31	0.100000
115	1992-06-19	0.140000
116	1995-12-22	1.275000
117	2010-06-18	0.150000
118	2018-12-21	1.247000
119	1988-04-22	0.130000
120	1993-09-17	0.140000
121	1994-05-02	0.050000
122	2007-12-21	2.120000
123	2000-06-16	0.145000
124	2001-09-21	0.135000
125	2004-12-17	0.410000
126	1982-10-29	0.110000
127	1984-02-02	0.110000
128	1989-09-22	0.140000
129	1997-09-19	0.145000
130	2025-09-17	0.205000
131	1981-01-30	0.100000
132	1993-03-19	0.140000
133	1996-09-20	0.145000
134	2000-09-22	0.145000
135	2004-03-19	0.135000
136	2007-09-21	0.180000
137	1982-07-30	0.100000
138	1990-12-21	0.100000
139	1996-06-21	0.145000
140	2003-06-20	0.135000
141	2010-03-19	0.150000
142	2013-03-22	0.175000
143	1995-06-16	0.145000
144	1996-03-22	0.145000
145	2000-03-15	0.145000
146	2002-06-21	0.135000
147	2008-03-20	0.180000
148	2008-09-19	0.180000
149	2021-12-17	1.337000
150	1989-12-22	0.200000
151	1991-06-21	0.140000
152	1997-12-18	1.840000
153	1999-03-19	0.145000
154	2021-06-16	1.913000
155	1990-03-16	0.140000
156	1997-06-20	0.145000
157	1998-06-19	0.145000
158	1999-12-17	3.250000
159	1994-06-17	0.040000
160	2009-09-25	0.175000
161	2019-06-14	1.099000
162	2020-09-16	0.205000
163	2005-06-17	0.150000
164	2016-03-18	0.190000
165	2018-09-14	0.200000
166	2022-12-16	1.145000
167	1987-11-06	0.130000
168	1993-06-18	0.140000
169	1999-09-17	0.145000
170	2002-09-20	0.135000
171	2026-06-16	2.801000
172	2011-09-23	0.155000
173	2017-09-15	0.195000
174	2022-06-15	1.727000
175	1985-08-02	0.120000
176	1986-08-01	0.130000
177	1992-09-18	0.140000
178	2001-12-21	0.775000
179	1988-12-16	0.040000
180	1996-12-20	1.385000
181	2013-09-20	0.175000
182	1988-02-05	0.130000
183	1994-09-01	0.050000
184	2017-12-18	1.753000
185	1980-01-31	0.090000
186	2019-03-15	0.203000
187	2021-03-17	0.205000
188	2007-03-23	0.170000
189	2010-09-24	0.150000
190	2012-06-15	0.165000
191	2026-03-18	0.205000
192	1985-11-01	0.120000
193	1987-08-03	0.130000
194	1993-12-23	0.140000
195	2002-03-22	0.135000

3.8 KiB Raw Blame History

3.8 KiB

Raw Blame History