f/axp-dividend.csv at 19b33d5a18a5f2c124bf1e0a7de3acea9d711f4b

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	1992-06-26	0.064371
3	2011-04-06	0.180000
4	2026-04-02	0.950000
5	1994-04-04	0.064371
6	1996-12-31	0.065648
7	1999-03-30	0.065648
8	2007-10-03	0.150000
9	1986-09-29	0.043772
10	1987-03-30	0.048922
11	1988-04-04	0.048922
12	1991-09-30	0.064371
13	2011-10-05	0.180000
14	2016-06-29	0.290000
15	1981-10-05	0.032186
16	1991-04-01	0.059221
17	2015-10-07	0.290000
18	2021-01-07	0.430000
19	1978-10-02	0.025748
20	2002-10-02	0.070024
21	2006-10-04	0.150000
22	2005-01-05	0.105036
23	2007-04-03	0.150000
24	2021-03-31	0.430000
25	2025-04-04	0.820000
26	1982-01-04	0.035404
27	1983-12-30	0.041197
28	1984-04-02	0.041197
29	1990-12-28	0.059221
30	2026-07-02	0.950000
31	1995-04-03	0.065648
32	2004-10-06	0.105036
33	2018-10-04	0.390000
34	1981-06-29	0.032186
35	1983-01-03	0.038623
36	1984-10-01	0.041197
37	1994-07-01	0.065648
38	2025-07-03	0.820000
39	1978-06-30	0.025748
40	1983-04-04	0.038623
41	1989-04-03	0.054072
42	1990-04-02	0.059221
43	2007-07-03	0.150000
44	2009-01-07	0.180000
45	1979-04-02	0.028967
46	1987-09-29	0.087545
47	1988-10-03	0.048922
48	2000-04-20	0.070024
49	2014-07-09	0.260000
50	2021-07-01	0.430000
51	2022-10-13	0.520000
52	1977-12-30	0.022530
53	1982-07-02	0.035404
54	2002-04-03	0.070024
55	2008-01-02	0.180000
56	2012-07-03	0.200000
57	2013-10-02	0.230000
58	2019-04-04	0.390000
59	1983-07-01	0.041197
60	1985-06-28	0.041197
61	1988-07-01	0.048922
62	1992-09-28	0.064371
63	2000-01-05	0.065648
64	2011-01-05	0.180000
65	2014-10-01	0.260000
66	2017-04-05	0.320000
67	1979-06-29	0.028967
68	1986-12-26	0.046347
69	1997-10-01	0.065648
70	1999-01-06	0.065648
71	2024-07-05	0.700000
72	1979-10-01	0.028967
73	1991-12-27	0.064371
74	2006-01-04	0.120000
75	2024-10-04	0.700000
76	1998-10-07	0.065648
77	2004-06-30	0.087530
78	2017-10-05	0.350000
79	2022-04-07	0.520000
80	2013-07-02	0.230000
81	2014-01-08	0.230000
82	2018-01-04	0.350000
83	2019-01-03	0.390000
84	1980-12-26	0.032186
85	1981-03-30	0.032186
86	1991-06-28	0.059221
87	2000-10-04	0.070024
88	2020-10-08	0.430000
89	2023-07-06	0.600000
90	2010-03-30	0.180000
91	2016-01-06	0.290000
92	2001-04-04	0.070024
93	2003-12-30	0.087530
94	2008-10-01	0.180000
95	2009-09-30	0.180000
96	1995-10-11	0.065648
97	2006-04-05	0.120000
98	2022-06-30	0.520000
99	2024-01-04	0.600000
100	1978-12-29	0.025748
101	2013-04-03	0.200000
102	2017-01-04	0.320000
103	2017-07-05	0.320000
104	2005-06-29	0.105036
105	2006-07-05	0.150000
106	2009-04-01	0.180000
107	2016-10-05	0.320000
108	1996-04-02	0.065648
109	2004-03-31	0.087530
110	2012-01-04	0.180000
111	2018-07-05	0.350000
112	2003-04-02	0.070024
113	2013-01-02	0.200000
114	1977-04-01	0.019311
115	1985-12-27	0.043772
116	1993-03-29	0.064371
117	2001-07-03	0.070024
118	2008-04-09	0.180000
119	2010-01-07	0.180000
120	2023-04-05	0.600000
121	1985-03-29	0.041197
122	1990-06-29	0.059221
123	2001-01-03	0.070024
124	2005-10-05	0.120000
125	2003-07-01	0.087530
126	2012-10-03	0.200000
127	2018-04-05	0.350000
128	1993-07-02	0.064371
129	1994-10-03	0.065648
130	1995-07-05	0.065648
131	1997-12-30	0.065648
132	2025-01-03	0.700000
133	1982-10-04	0.035404
134	1989-12-29	0.059221
135	2009-06-30	0.180000
136	2021-10-07	0.430000
137	1977-10-03	0.022530
138	1996-01-03	0.065648
139	2002-12-31	0.070024
140	2020-01-02	0.430000
141	2011-06-29	0.180000
142	2019-07-03	0.390000
143	1987-12-31	0.048922
144	1994-01-03	0.064371
145	1996-07-02	0.065648
146	2015-06-30	0.290000
147	1977-07-01	0.019311
148	1980-03-28	0.032186
149	1984-06-29	0.041197
150	1986-03-27	0.043772
151	2016-04-06	0.290000
152	2026-01-02	0.820000
153	2007-01-03	0.150000
154	2012-04-03	0.200000
155	2020-07-01	0.430000
156	2023-10-05	0.600000
157	1980-06-27	0.032186
158	1983-10-03	0.041197
159	1989-06-30	0.054072
160	1999-10-06	0.065648
161	2024-04-04	0.700000
162	1999-06-30	0.065939
163	2001-10-03	0.070024
164	2010-10-06	0.180000
165	2014-04-02	0.230000
166	1992-03-30	0.064371
167	1993-01-04	0.064371
168	1994-12-30	0.065648
169	1998-04-07	0.065648
170	2015-01-07	0.260000
171	2015-03-31	0.260000
172	1985-09-30	0.043772
173	1986-06-27	0.043772
174	2008-07-09	0.180000
175	2022-01-06	0.430000
176	1990-10-01	0.059221
177	1997-07-01	0.065648
178	2002-01-02	0.070024
179	2002-07-02	0.070024
180	1980-09-29	0.032186
181	1988-01-04	0.048922
182	1988-12-30	0.054072
183	1989-10-02	0.054072
184	2019-10-03	0.430000
185	2020-04-02	0.430000
186	1987-10-05	0.048922
187	1993-10-04	0.064371
188	1996-10-09	0.065648
189	1997-04-02	0.065648
190	1978-04-03	0.022530
191	1979-12-28	0.028967
192	1984-12-28	0.041197
193	1987-06-26	0.048922
194	2010-06-30	0.180000
195	2023-01-05	0.520000
196	2025-10-10	0.820000
197	1998-06-30	0.065648
198	2000-07-05	0.070024
199	2003-10-01	0.087530
200	2005-03-30	0.105036

3.9 KiB Raw Blame History

3.9 KiB

Raw Blame History