f/aaiix-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

4.0 KiB

Raw Blame History

1	Date	Dividends
2	2012-06-27	0.053000
3	2021-07-28	0.030000
4	2023-09-27	0.030000
5	2024-07-29	0.030000
6	2015-08-27	0.048000
7	2018-10-29	0.028000
8	2020-02-26	0.026000
9	2021-01-27	0.030000
10	2004-08-27	0.050000
11	2008-06-26	0.053000
12	2012-03-28	0.053000
13	2014-12-26	0.048000
14	2021-12-28	0.030000
15	2022-06-28	0.030000
16	2022-12-28	0.030000
17	2015-01-29	0.048000
18	2017-04-26	0.033000
19	2017-05-26	0.033000
20	2018-02-26	0.030000
21	2008-09-26	0.053000
22	2011-07-27	0.053000
23	2012-01-27	0.053000
24	2012-05-29	0.053000
25	2023-04-26	0.030000
26	2023-06-28	0.030000
27	2026-02-25	0.035000
28	2011-05-26	0.053000
29	2012-08-29	0.053000
30	2017-08-29	0.033000
31	2019-02-26	0.026000
32	2004-12-29	0.100000
33	2008-07-29	0.053000
34	2010-09-28	0.053000
35	2011-01-27	0.053000
36	2019-12-26	0.026000
37	2021-04-28	0.030000
38	2025-09-26	0.035000
39	2004-06-30	0.050000
40	2016-04-27	0.043000
41	2018-04-26	0.030000
42	2020-11-25	0.030000
43	2010-06-28	0.053000
44	2019-07-29	0.026000
45	2024-03-26	0.030000
46	2021-03-29	0.030000
47	2021-05-26	0.030000
48	2025-02-26	0.030000
49	2008-02-27	0.053000
50	2011-10-27	0.053000
51	2018-03-28	0.030000
52	2018-07-27	0.030000
53	2020-09-28	0.030000
54	2022-08-29	0.030000
55	2011-09-28	0.053000
56	2012-09-26	0.053000
57	2018-05-29	0.030000
58	2020-08-27	0.026000
59	2009-04-28	0.053000
60	2016-06-28	0.043000
61	2024-05-29	0.030000
62	2026-07-29	0.035000
63	2004-09-28	0.050000
64	2021-09-28	0.030000
65	2023-11-27	0.030000
66	2020-05-27	0.026000
67	2020-10-28	0.030000
68	2023-03-29	0.030000
69	2024-08-28	0.030000
70	2010-03-26	0.053000
71	2010-12-28	0.053000
72	2012-04-26	0.053000
73	2020-01-29	0.026000
74	2026-04-28	0.035000
75	2008-11-25	0.053000
76	2010-05-27	0.053000
77	2025-03-27	0.030000
78	2018-01-29	0.030000
79	2009-12-28	0.053000
80	2010-08-27	0.053000
81	2014-10-29	0.048000
82	2017-11-28	0.043000
83	2009-02-25	0.053000
84	2009-05-27	0.053000
85	2014-11-25	0.048000
86	2015-09-28	0.048000
87	2004-05-28	0.050000
88	2004-10-27	0.050000
89	2005-02-28	0.050000
90	2007-12-26	0.053000
91	2016-01-27	0.048000
92	2017-01-27	0.043000
93	2021-11-26	0.030000
94	2012-11-28	0.053000
95	2019-01-29	0.026000
96	2022-03-29	0.030000
97	2025-04-28	0.030000
98	2019-10-29	0.026000
99	2015-04-28	0.048000
100	2016-08-29	0.043000
101	2019-03-27	0.026000
102	2019-08-28	0.026000
103	2009-03-27	0.053000
104	2015-02-25	0.048000
105	2016-12-27	0.043000
106	2022-02-24	0.030000
107	2008-03-26	0.053000
108	2012-10-31	0.053000
109	2017-06-28	0.033000
110	2023-07-27	0.030000
111	2012-07-27	0.053000
112	2017-09-27	0.033000
113	2022-01-27	0.030000
114	2025-07-29	0.030000
115	2017-02-24	0.033000
116	2017-10-27	0.033000
117	2022-05-26	0.030000
118	2023-05-26	0.030000
119	2004-07-28	0.050000
120	2009-09-28	0.053000
121	2010-10-27	0.053000
122	2016-02-25	0.048000
123	2025-11-25	0.035000
124	2022-09-28	0.030000
125	2025-06-26	0.030000
126	2011-04-27	0.053000
127	2011-12-27	0.053000
128	2015-12-28	0.047000
129	2016-11-25	0.043000
130	2016-05-26	0.043000
131	2017-03-29	0.033000
132	2017-07-27	0.033000
133	2019-09-26	0.026000
134	2006-10-26	0.050000
135	2008-10-29	0.053000
136	2015-03-26	0.048000
137	2015-06-26	0.048000
138	2026-01-28	0.035000
139	2017-12-26	0.019000
140	2024-11-26	0.030000
141	2023-01-27	0.030000
142	2024-02-27	0.030000
143	2024-06-26	0.030000
144	2008-12-26	0.053000
145	2009-10-28	0.053000
146	2010-01-27	0.053000
147	2019-05-28	0.026000
148	2022-11-28	0.030000
149	2024-12-27	0.030000
150	2025-12-29	0.035000
151	2007-05-25	0.052000
152	2010-07-28	0.053000
153	2015-10-28	0.048000
154	2018-09-26	0.030000
155	2026-06-26	0.035000
156	2006-12-26	0.078000
157	2019-04-26	0.026000
158	2021-06-28	0.030000
159	2023-10-27	0.030000
160	2019-06-26	0.026000
161	2021-02-24	0.030000
162	2021-08-27	0.030000
163	2022-07-27	0.030000
164	2006-11-24	0.050000
165	2007-06-26	0.053000
166	2007-07-25	0.053000
167	2015-05-27	0.048000
168	2025-10-29	0.035000
169	2022-10-25	0.030000
170	2024-09-26	0.030000
171	2024-10-29	0.030000
172	2025-08-27	0.030000
173	2020-06-26	0.026000
174	2022-04-27	0.030000
175	2023-02-24	0.030000
176	2023-12-27	0.030000
177	2004-04-30	0.050000
178	2016-07-27	0.043000
179	2018-06-27	0.030000
180	2018-11-28	0.028000
181	2025-01-29	0.030000
182	2026-05-27	0.035000
183	2026-03-27	0.035000
184	2016-09-28	0.043000
185	2019-11-26	0.026000
186	2023-08-29	0.030000
187	2024-04-26	0.030000
188	2020-07-29	0.026000
189	2021-10-27	0.030000
190	2007-09-25	0.053000
191	2007-11-27	0.053000
192	2010-11-26	0.053000
193	2018-08-28	0.030000
194	2015-07-29	0.048000
195	2016-10-27	0.043000
196	2024-01-29	0.030000
197	2025-05-28	0.030000
198	2016-03-29	0.043000
199	2020-03-27	0.026000
200	2020-04-28	0.026000
201	2004-11-29	0.050000
202	2008-04-28	0.053000
203	2009-08-27	0.053000
204	2015-11-25	0.048000

4.0 KiB Raw Blame History

4.0 KiB

Raw Blame History