f/evifx-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

3.9 KiB

Raw Blame History

1	Date	Dividends
2	1991-05-01	0.090000
3	1996-08-15	0.065000
4	2006-12-27	0.203000
5	2015-09-09	0.030000
6	1980-07-31	0.100000
7	1984-07-31	0.120000
8	1990-02-01	0.110000
9	2007-03-09	0.045000
10	2009-09-09	0.016000
11	2012-03-09	0.044000
12	2022-12-09	0.440000
13	1983-04-29	0.120000
14	1987-11-02	0.090000
15	1995-05-15	0.070000
16	1997-02-18	0.050000
17	2004-12-09	0.028000
18	2005-12-09	0.023000
19	1993-02-01	0.080000
20	1994-02-01	0.070000
21	2004-09-14	0.025000
22	2008-12-30	0.015000
23	2013-12-19	0.600000
24	2014-12-16	0.550000
25	2021-09-09	0.020000
26	1988-08-01	0.090000
27	1992-02-03	0.090000
28	2012-12-19	0.029000
29	2018-08-09	0.035000
30	1999-02-23	0.185000
31	2002-06-17	0.041000
32	1987-05-01	0.090000
33	1998-08-18	0.055000
34	2002-05-09	0.015000
35	2008-09-09	0.024000
36	2009-12-30	0.017000
37	2017-03-09	0.035000
38	1981-07-31	0.120000
39	1984-04-30	0.120000
40	2022-09-09	0.035000
41	2020-08-18	0.105000
42	2021-06-09	0.025000
43	1991-08-01	0.090000
44	2000-08-31	0.035000
45	2005-09-09	0.021000
46	2007-06-11	0.080000
47	2007-09-11	0.237000
48	2017-07-26	0.037000
49	1982-04-30	0.130000
50	1986-02-03	0.150000
51	1998-02-25	0.054000
52	1998-12-22	1.463000
53	2005-06-09	0.034000
54	2010-06-09	0.028000
55	2023-06-09	0.036000
56	2023-12-11	0.097000
57	1985-04-30	0.120000
58	1997-05-16	0.205000
59	2013-06-11	0.027000
60	2019-03-11	0.032000
61	2024-09-10	0.043000
62	2002-02-12	0.020000
63	2002-08-14	0.010000
64	1996-02-15	0.070000
65	2003-02-11	0.010000
66	2011-12-28	0.027000
67	2015-05-21	0.248000
68	2018-12-11	0.400000
69	1988-02-01	0.090000
70	1989-08-01	0.100000
71	1990-11-01	0.100000
72	1992-05-01	0.090000
73	1993-08-16	0.080000
74	2008-03-11	0.164000
75	2021-12-09	0.874000
76	1981-01-30	0.150000
77	1987-02-02	0.090000
78	1994-08-08	0.070000
79	1994-11-08	0.059000
80	2015-12-15	0.159000
81	2017-12-12	0.283000
82	2020-12-10	0.093000
83	1985-07-31	0.120000
84	1992-11-02	0.090000
85	2025-09-09	0.037000
86	1996-06-24	0.030000
87	1996-12-16	0.850000
88	1999-11-30	0.060000
89	1989-02-01	0.100000
90	2002-11-19	0.010000
91	2015-03-10	0.023000
92	1980-01-31	0.110000
93	1988-05-02	0.090000
94	1993-11-01	0.075000
95	2019-06-11	0.033000
96	1985-11-01	0.130000
97	1993-05-03	0.080000
98	1994-05-02	0.070000
99	2003-12-09	0.015000
100	2006-09-11	0.030000
101	2010-03-09	0.022000
102	2019-08-08	0.045000
103	2022-03-09	0.026000
104	1981-04-30	0.120000
105	1989-11-01	0.120000
106	2026-06-09	0.041000
107	2000-05-16	0.040000
108	2001-03-15	0.061000
109	2002-10-15	0.036000
110	2016-09-09	0.029000
111	1986-05-01	0.120000
112	1999-11-16	0.060000
113	2004-06-09	0.015000
114	2011-06-09	0.033000
115	2018-09-11	0.038000
116	2019-12-17	0.231000
117	2021-03-09	0.027000
118	2024-06-11	0.036000
119	1984-10-31	0.130000
120	1987-08-03	0.090000
121	1999-05-18	0.045000
122	2016-03-09	0.036000
123	2018-06-11	0.035000
124	2020-03-10	0.037000
125	2022-06-09	0.030000
126	2023-03-09	0.038000
127	1981-10-30	0.140000
128	1983-01-31	0.160000
129	1992-08-10	0.090000
130	2000-02-28	0.105000
131	2008-06-10	0.064000
132	2016-06-09	0.030000
133	2017-06-09	0.037000
134	2020-06-09	0.033000
135	1982-10-29	0.130000
136	1989-05-01	0.100000
137	1990-05-01	0.110000
138	1990-08-01	0.110000
139	2005-03-09	0.024000
140	2011-03-09	0.028000
141	2016-12-13	0.060000
142	2017-09-11	0.034000
143	1980-10-31	0.110000
144	1982-01-29	0.170000
145	2020-09-09	0.028000
146	1983-10-31	0.130000
147	1999-08-17	0.045000
148	1991-02-01	0.090000
149	1991-11-01	0.090000
150	1996-11-15	0.055000
151	2000-12-12	1.484000
152	2006-06-09	0.031000
153	2012-09-11	0.027000
154	1982-07-30	0.130000
155	1985-01-31	0.150000
156	2018-03-09	0.032000
157	1995-08-15	0.070000
158	2001-02-13	0.035000
159	2007-12-24	0.483000
160	2009-06-09	0.029000
161	2014-06-10	0.024000
162	2015-06-09	0.038000
163	1986-11-03	0.100000
164	1995-02-15	0.065000
165	2024-12-10	0.567000
166	2019-09-10	0.033000
167	2023-09-11	0.038000
168	1997-08-18	0.050000
169	1997-12-29	0.735000
170	1996-05-15	0.065000
171	1998-05-18	0.050000
172	1998-11-17	0.065000
173	2001-05-16	0.035000
174	2009-03-10	0.031000
175	2010-09-09	0.024000
176	1984-01-31	0.150000
177	1995-11-15	0.050000
178	2026-03-10	0.037000
179	2010-12-29	0.026000
180	2011-09-09	0.032000
181	2012-06-11	0.031000
182	2025-03-11	0.038000
183	2025-06-10	0.040000
184	1988-11-01	0.100000
185	2004-03-09	0.015000
186	2003-05-13	0.010000
187	2013-03-11	0.030000
188	2013-09-10	0.021000
189	2025-12-09	0.522000
190	1980-04-30	0.100000
191	1983-07-29	0.120000
192	2014-03-11	0.036000
193	2014-09-09	0.184000
194	2024-03-11	0.038000
195	2000-11-29	0.035000
196	2001-08-16	0.015000
197	2001-11-16	0.010000
198	2003-08-12	0.010000
199	2006-03-09	0.026000
200	1986-08-01	0.100000
201	1997-11-18	0.050000

3.9 KiB Raw Blame History

3.9 KiB

Raw Blame History