f/ehstx-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	2004-06-09	0.045000
3	2006-12-27	0.460000
4	2007-09-11	0.071000
5	2015-09-09	0.060000
6	1982-01-04	0.130000
7	1990-01-02	0.140000
8	2009-06-09	0.071000
9	2013-09-10	0.065000
10	2014-06-10	0.080000
11	2014-09-09	0.080000
12	2015-03-10	0.080000
13	2019-06-11	0.060000
14	2018-03-09	0.060000
15	1980-01-02	0.110000
16	1981-10-01	0.150000
17	1984-01-03	0.160000
18	1987-01-02	0.130000
19	1987-07-01	0.120000
20	1989-10-02	0.140000
21	2003-02-11	0.030000
22	2022-12-09	0.786000
23	1988-04-04	0.110000
24	1998-12-22	0.587000
25	1999-04-16	0.217000
26	2011-06-09	0.048000
27	2015-05-21	0.253000
28	2017-06-09	0.060000
29	2022-06-09	0.055000
30	1981-01-02	0.130000
31	1993-01-04	0.070000
32	2001-10-19	0.060000
33	2004-01-06	0.079000
34	2012-12-19	0.101000
35	2014-03-11	0.080000
36	2014-12-16	7.248000
37	1992-04-01	0.080000
38	1997-01-15	0.050000
39	2023-09-11	0.058000
40	2017-12-14	0.969000
41	1981-04-01	0.150000
42	1981-07-01	0.150000
43	1994-07-01	0.065000
44	1995-07-03	0.060000
45	2000-12-12	0.600000
46	2003-12-09	0.050000
47	2011-09-09	0.068000
48	2023-06-09	0.060000
49	2024-09-10	0.062000
50	2020-03-10	0.060000
51	1980-10-01	0.130000
52	1986-04-01	0.150000
53	1997-07-16	0.040000
54	1998-01-16	0.040000
55	2007-03-13	0.171000
56	2016-03-09	0.060000
57	2016-06-09	0.060000
58	2022-09-09	0.060000
59	2008-03-11	0.072000
60	2008-06-10	0.074000
61	2018-09-11	0.060000
62	2026-03-10	0.051000
63	1980-04-01	0.100000
64	1993-07-01	0.070000
65	1993-10-01	0.060000
66	1999-07-16	0.010000
67	2005-06-09	0.056000
68	2019-09-10	0.060000
69	2024-06-11	0.087000
70	1982-07-01	0.160000
71	1985-07-01	0.150000
72	1989-07-03	0.120000
73	1998-10-20	0.015000
74	2025-06-10	0.075000
75	1993-04-01	0.070000
76	1997-10-20	0.040000
77	1999-12-14	1.832000
78	2001-04-17	0.025000
79	2002-04-09	0.040000
80	2002-06-17	0.037000
81	2018-06-11	0.060000
82	2020-12-10	0.079000
83	1989-01-03	0.120000
84	1994-10-03	0.065000
85	1997-04-15	0.450000
86	2001-03-16	0.346000
87	2007-12-24	0.211000
88	2010-06-09	0.049000
89	2012-03-09	0.049000
90	2024-12-10	0.872000
91	2007-06-11	0.087000
92	1982-04-01	0.150000
93	1998-04-16	0.020000
94	1999-10-18	0.055000
95	2000-10-17	0.040000
96	2001-01-17	0.020000
97	2005-09-09	0.049000
98	2005-12-21	0.189000
99	2013-03-11	0.075000
100	2021-03-09	0.060000
101	1989-04-03	0.120000
102	1998-07-16	0.015000
103	2000-04-18	0.899000
104	2006-09-11	0.061000
105	2015-12-17	1.386000
106	2018-12-07	1.466000
107	2024-03-11	0.048000
108	1987-10-01	0.120000
109	1997-12-29	3.210000
110	2010-03-09	0.041000
111	2017-09-11	0.060000
112	2018-08-09	0.159000
113	2022-03-09	0.060000
114	1991-07-01	0.110000
115	1996-04-15	0.055000
116	2020-06-09	0.060000
117	2026-06-09	0.064000
118	1992-01-02	0.090000
119	2007-03-09	0.058000
120	2021-12-09	1.596000
121	2023-12-11	0.518000
122	1983-07-01	0.140000
123	1990-04-02	0.130000
124	1992-10-01	0.070000
125	1995-01-03	0.065000
126	2004-12-09	0.048000
127	2011-03-09	0.044000
128	2011-12-28	0.114000
129	2012-09-11	0.084000
130	1984-07-02	0.140000
131	1988-10-03	0.120000
132	1991-10-01	0.110000
133	1995-04-03	0.060000
134	2002-07-09	0.040000
135	2005-03-09	0.033000
136	2008-09-09	0.062000
137	2020-09-09	0.060000
138	1983-10-03	0.150000
139	1995-10-02	0.060000
140	1996-07-15	0.055000
141	1996-10-15	0.050000
142	1999-01-19	0.010000
143	2003-05-13	0.030000
144	2006-06-09	0.066000
145	2021-09-09	0.060000
146	2000-07-18	0.020000
147	1983-04-04	0.140000
148	1984-04-02	0.140000
149	2005-12-09	0.063000
150	2023-03-09	0.060000
151	2015-06-09	0.060000
152	1986-10-01	0.130000
153	1988-07-01	0.110000
154	1991-04-01	0.110000
155	1996-01-15	0.060000
156	2006-03-28	0.146000
157	2009-03-10	0.071000
158	2009-09-09	0.040000
159	2016-12-15	0.060000
160	2025-03-11	0.064000
161	2004-09-14	0.040000
162	2012-06-11	0.084000
163	2017-03-09	0.060000
164	2020-08-18	0.149000
165	2025-09-09	0.048000
166	2016-09-09	0.060000
167	1980-07-01	0.120000
168	1983-01-03	0.150000
169	1986-01-02	0.150000
170	1987-04-01	0.120000
171	1992-07-01	0.080000
172	2002-01-09	0.020000
173	2010-09-09	0.045000
174	2019-03-11	0.060000
175	2025-12-09	1.451000
176	1996-12-16	1.475000
177	2009-12-30	0.041000
178	2010-12-29	0.051000
179	1982-10-01	0.160000
180	1984-10-01	0.150000
181	1988-01-04	0.110000
182	1994-01-03	0.060000
183	2004-03-09	0.045000
184	2008-12-30	0.069000
185	2021-06-09	0.060000
186	1986-07-01	0.150000
187	1990-07-02	0.130000
188	2003-08-12	0.040000
189	2019-12-17	0.234000
190	1990-10-01	0.230000
191	1994-04-04	0.060000
192	2001-07-17	0.020000
193	2006-03-09	0.068000
194	2013-06-11	0.080000
195	1985-01-02	0.150000
196	1985-04-01	0.150000
197	1985-10-01	0.140000
198	1991-01-02	0.130000
199	2000-01-18	0.010000
200	2013-12-19	1.039000

3.9 KiB Raw Blame History

3.9 KiB

Raw Blame History