f/brasx-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

4.1 KiB

Raw Blame History

1	Date	Dividends
2	2016-07-29	0.027000
3	2016-10-31	0.027000
4	2019-10-31	0.027000
5	2020-01-31	0.026000
6	2023-01-31	0.027000
7	2004-12-31	0.030000
8	2009-06-30	0.034000
9	2009-07-31	0.034000
10	2023-10-31	0.033000
11	2025-01-31	0.035000
12	2025-03-31	0.036000
13	2025-05-30	0.037000
14	2014-08-29	0.022000
15	2018-12-31	0.022000
16	2024-01-31	0.034000
17	2009-12-31	0.033000
18	2015-05-29	0.028000
19	2017-04-28	0.021000
20	2018-09-28	0.021000
21	2026-06-30	0.034000
22	2005-06-30	0.030000
23	2007-10-31	0.042000
24	2009-02-27	0.022000
25	2018-08-31	0.021000
26	2014-10-31	0.021000
27	2016-05-31	0.027000
28	2016-08-31	0.028000
29	2019-04-30	0.023000
30	2022-02-28	0.014000
31	2023-07-31	0.031000
32	2024-09-30	0.035000
33	2024-11-29	0.035000
34	2005-01-31	0.031000
35	2007-11-30	0.040000
36	2018-01-31	0.021000
37	2025-02-28	0.033000
38	2017-06-30	0.022000
39	2021-06-30	0.012000
40	2024-07-31	0.036000
41	2026-05-29	0.035000
42	2014-12-31	0.021000
43	2015-03-31	0.023000
44	2017-05-31	0.023000
45	2019-02-28	0.021000
46	2019-06-28	0.025000
47	2020-11-30	0.014000
48	2024-08-30	0.036000
49	2005-07-29	0.032000
50	2008-02-29	0.035000
51	2008-12-31	0.018000
52	2016-06-30	0.027000
53	2017-11-30	0.022000
54	2023-12-29	0.036000
55	2024-06-28	0.035000
56	2005-12-30	0.035000
57	2006-08-31	0.038000
58	2009-10-30	0.034000
59	2025-04-30	0.035000
60	2008-09-30	0.032000
61	2008-12-23	0.101000
62	2023-09-29	0.033000
63	2018-06-29	0.020000
64	2022-05-31	0.017000
65	2023-04-28	0.029000
66	2024-05-31	0.036000
67	2026-04-30	0.034000
68	2006-11-30	0.043000
69	2009-05-29	0.030000
70	2016-01-29	0.029000
71	2019-07-31	0.026000
72	2020-07-31	0.022000
73	2025-12-31	0.037000
74	2015-11-30	0.028000
75	2015-12-31	0.029000
76	2018-02-28	0.017000
77	2019-01-31	0.022000
78	2007-12-31	0.039000
79	2017-10-31	0.023000
80	2017-12-29	0.022000
81	2021-11-30	0.013000
82	2005-08-31	0.033000
83	2019-12-31	0.026000
84	2020-06-30	0.024000
85	2021-03-31	0.013000
86	2021-12-31	0.015000
87	2022-11-30	0.025000
88	2023-06-30	0.030000
89	2025-07-31	0.037000
90	2008-10-31	0.030000
91	2015-06-30	0.028000
92	2017-08-31	0.023000
93	2026-01-30	0.035000
94	2015-10-30	0.029000
95	2017-07-31	0.021000
96	2021-01-29	0.013000
97	2021-09-30	0.013000
98	2022-07-29	0.022000
99	2005-09-30	0.032000
100	2006-05-31	0.037000
101	2007-04-30	0.042000
102	2022-09-30	0.022000
103	2021-05-28	0.012000
104	2022-01-31	0.013000
105	2022-03-31	0.016000
106	2009-03-31	0.023000
107	2017-01-31	0.025000
108	2017-09-29	0.023000
109	2019-09-30	0.026000
110	2020-04-30	0.028000
111	2022-06-30	0.019000
112	2024-03-28	0.036000
113	2006-06-30	0.037000
114	2016-03-31	0.025000
115	2017-02-28	0.024000
116	2007-03-30	0.044000
117	2022-08-31	0.022000
118	2023-05-31	0.030000
119	2015-09-30	0.028000
120	2019-03-29	0.023000
121	2024-04-30	0.035000
122	2007-02-28	0.041000
123	2009-11-30	0.034000
124	2015-02-27	0.018000
125	2020-05-29	0.025000
126	2021-04-30	0.013000
127	2023-03-31	0.029000
128	2005-04-29	0.030000
129	2006-01-31	0.035000
130	2018-04-30	0.021000
131	2014-07-31	0.023000
132	2017-03-31	0.024000
133	2020-03-31	0.028000
134	2022-04-29	0.016000
135	2023-08-31	0.032000
136	2007-01-31	0.043000
137	2008-05-30	0.032000
138	2014-05-30	0.022000
139	2018-07-31	0.020000
140	2005-05-31	0.032000
141	2009-08-31	0.035000
142	2014-09-30	0.022000
143	2007-07-31	0.044000
144	2008-04-30	0.034000
145	2025-11-28	0.035000
146	2007-09-28	0.044000
147	2015-08-31	0.029000
148	2016-09-30	0.027000
149	2004-11-30	0.027000
150	2006-02-28	0.034000
151	2006-10-31	0.043000
152	2008-06-30	0.032000
153	2016-02-29	0.027000
154	2016-12-30	0.025000
155	2018-11-30	0.024000
156	2021-02-26	0.012000
157	2005-02-28	0.029000
158	2006-03-31	0.038000
159	2007-05-31	0.044000
160	2025-09-30	0.035000
161	2025-10-31	0.036000
162	2026-07-31	0.036000
163	2008-01-31	0.039000
164	2015-01-30	0.020000
165	2020-09-30	0.017000
166	2018-10-31	0.023000
167	2020-02-28	0.024000
168	2020-12-31	0.014000
169	2021-08-31	0.013000
170	2023-02-28	0.026000
171	2008-11-28	0.026000
172	2009-01-30	0.022000
173	2014-06-30	0.023000
174	2024-12-31	0.035000
175	2016-11-30	0.025000
176	2021-10-29	0.013000
177	2026-02-27	0.032000
178	2006-09-29	0.040000
179	2009-04-30	0.027000
180	2009-09-30	0.033000
181	2014-11-28	0.020000
182	2015-07-31	0.028000
183	2019-05-31	0.025000
184	2019-08-30	0.026000
185	2020-10-30	0.017000
186	2006-07-31	0.039000
187	2007-06-29	0.043000
188	2008-07-31	0.033000
189	2024-10-31	0.036000
190	2015-04-30	0.023000
191	2016-04-29	0.026000
192	2019-11-29	0.027000
193	2020-08-31	0.020000
194	2021-07-30	0.013000
195	2007-08-31	0.044000
196	2008-03-31	0.035000
197	2008-08-29	0.032000
198	2022-10-31	0.025000
199	2022-12-30	0.027000
200	2024-02-29	0.033000
201	2025-06-30	0.034000
202	2026-03-31	0.034000
203	2005-10-31	0.033000
204	2022-12-21	0.016000
205	2023-11-30	0.034000
206	2006-12-29	0.043000
207	2005-03-31	0.031000
208	2005-11-30	0.033000
209	2006-04-28	0.034000

4.1 KiB Raw Blame History

4.1 KiB

Raw Blame History