f/lisax-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

5.5 KiB

Raw Blame History

1	Date	Dividends
2	2005-12-30	0.026000
3	2015-10-30	0.025000
4	2015-12-31	0.024000
5	2016-03-31	0.024000
6	2016-12-30	0.022000
7	2024-05-31	0.026000
8	2003-10-31	0.022000
9	2010-12-31	0.032000
10	2018-09-28	0.024000
11	2016-01-29	0.025000
12	2005-04-29	0.023000
13	2005-09-30	0.022000
14	2007-02-28	0.030000
15	2007-04-30	0.028000
16	2010-07-30	0.033000
17	2015-07-31	0.026000
18	2015-11-30	0.025000
19	2026-07-31	0.030000
20	2010-11-30	0.032000
21	2013-01-31	0.024000
22	2020-01-31	0.023000
23	2013-10-31	0.026000
24	2020-12-31	0.021000
25	2022-10-31	0.021000
26	2025-07-31	0.029000
27	2004-03-04	0.021000
28	2008-05-30	0.031000
29	2016-08-31	0.021000
30	2016-09-30	0.021000
31	2013-06-28	0.024000
32	2014-12-31	0.025000
33	2016-06-30	0.023000
34	2019-03-29	0.025000
35	2022-04-29	0.020000
36	2008-08-29	0.033000
37	2013-05-31	0.023000
38	2019-04-30	0.025000
39	2019-09-30	0.024000
40	2007-07-31	0.031000
41	2017-03-31	0.022000
42	2018-03-29	0.022000
43	2008-06-30	0.032000
44	2014-09-30	0.026000
45	2014-10-31	0.026000
46	2016-07-29	0.023000
47	2021-04-30	0.020000
48	2013-08-30	0.024000
49	2017-12-29	0.022000
50	2018-04-30	0.023000
51	2019-06-28	0.025000
52	2021-02-26	0.022000
53	2006-07-31	0.029000
54	2009-05-29	0.031000
55	2019-10-31	0.024000
56	2005-08-31	0.023000
57	2007-10-31	0.032000
58	2026-03-31	0.029000
59	2010-06-30	0.033000
60	2011-01-31	0.033000
61	2014-07-31	0.026000
62	2025-09-30	0.030000
63	2008-02-29	0.032000
64	2012-01-31	0.028000
65	2013-02-28	0.024000
66	2017-11-30	0.022000
67	2024-11-29	0.028000
68	2024-12-31	0.028000
69	2026-05-29	0.029000
70	2006-02-28	0.028000
71	2008-04-30	0.031000
72	2021-10-29	0.018000
73	2020-06-30	0.022000
74	2009-11-30	0.031000
75	2016-10-31	0.021000
76	2017-02-28	0.024000
77	2023-02-28	0.023000
78	2009-06-30	0.032000
79	2011-10-31	0.031000
80	2014-06-30	0.027000
81	2020-11-30	0.021000
82	2022-05-31	0.019000
83	2023-01-31	0.021000
84	2007-01-31	0.030000
85	2018-10-31	0.024000
86	2026-02-27	0.030000
87	2007-12-31	0.029000
88	2014-03-31	0.026000
89	2015-02-27	0.026000
90	2015-06-30	0.025000
91	2016-05-31	0.023000
92	2019-01-31	0.025000
93	2008-11-28	0.033000
94	2009-08-31	0.032000
95	2018-01-31	0.022000
96	2023-11-30	0.025000
97	2007-05-31	0.028000
98	2011-07-29	0.032000
99	2021-07-30	0.018000
100	2006-05-31	0.027000
101	2010-05-28	0.032000
102	2012-10-31	0.025000
103	2017-10-31	0.022000
104	2025-10-31	0.030000
105	2012-05-31	0.027000
106	2020-04-30	0.023000
107	2020-10-30	0.021000
108	2008-07-31	0.032000
109	2013-11-29	0.026000
110	2014-08-29	0.026000
111	2019-02-28	0.027000
112	2004-08-31	0.023000
113	2009-12-31	0.031000
114	2018-11-30	0.025000
115	2007-08-31	0.029000
116	2011-08-31	0.032000
117	2023-09-29	0.024000
118	2024-06-28	0.027000
119	2003-07-31	0.021000
120	2006-04-28	0.025000
121	2006-09-29	0.030000
122	2013-12-31	0.026000
123	2016-02-29	0.025000
124	2025-02-28	0.028000
125	2024-09-30	0.028000
126	2006-06-30	0.028000
127	2009-01-30	0.033000
128	2009-07-31	0.032000
129	2012-11-30	0.025000
130	2015-12-22	0.008000
131	2018-05-31	0.022000
132	2018-06-29	0.023000
133	2004-02-03	0.021000
134	2015-09-30	0.025000
135	2016-11-30	0.022000
136	2006-08-31	0.029000
137	2006-10-31	0.031000
138	2007-11-30	0.031000
139	2008-12-31	0.032000
140	2017-04-28	0.023000
141	2023-10-31	0.025000
142	2009-10-30	0.031000
143	2010-02-26	0.033000
144	2013-04-30	0.023000
145	2026-01-30	0.030000
146	2004-04-30	0.021000
147	2004-10-29	0.024000
148	2010-10-29	0.031000
149	2014-05-30	0.027000
150	2023-07-31	0.023000
151	2025-01-31	0.030000
152	2010-03-31	0.032000
153	2021-11-30	0.018000
154	2024-08-30	0.027000
155	2005-10-31	0.025000
156	2006-12-29	0.030000
157	2014-04-30	0.027000
158	2015-05-29	0.025000
159	2020-05-29	0.022000
160	2022-08-31	0.020000
161	2025-05-30	0.028000
162	2006-01-31	0.040000
163	2022-12-30	0.023000
164	2025-06-30	0.029000
165	2006-03-31	0.026000
166	2011-06-30	0.032000
167	2012-08-31	0.026000
168	2023-12-29	0.026000
169	2013-07-31	0.024000
170	2017-01-31	0.023000
171	2021-05-28	0.021000
172	2022-07-29	0.019000
173	2024-04-30	0.027000
174	2025-08-29	0.029000
175	2003-09-30	0.022000
176	2005-06-30	0.022000
177	2008-10-31	0.033000
178	2020-08-31	0.021000
179	2022-02-28	0.019000
180	2026-04-30	0.030000
181	2003-08-29	0.022000
182	2004-07-30	0.024000
183	2011-09-30	0.032000
184	2018-07-31	0.023000
185	2021-12-31	0.018000
186	2024-02-29	0.027000
187	2012-07-31	0.026000
188	2012-09-28	0.026000
189	2019-07-31	0.024000
190	2020-07-31	0.022000
191	2022-11-30	0.022000
192	2024-03-28	0.026000
193	2026-06-30	0.030000
194	2004-01-05	0.022000
195	2008-03-31	0.032000
196	2012-03-30	0.027000
197	2023-06-30	0.025000
198	2004-06-30	0.024000
199	2012-02-29	0.028000
200	2014-02-28	0.027000
201	2015-08-31	0.025000
202	2020-09-30	0.022000
203	2011-05-31	0.032000
204	2015-04-30	0.025000
205	2017-09-29	0.021000
206	2022-01-31	0.017000
207	2023-04-28	0.023000
208	2004-05-28	0.022000
209	2012-04-30	0.028000
210	2015-03-31	0.024000
211	2016-04-29	0.024000
212	2005-02-28	0.025000
213	2019-11-29	0.024000
214	2021-03-31	0.020000
215	2025-12-31	0.030000
216	2011-04-29	0.033000
217	2017-07-31	0.021000
218	2018-02-28	0.024000
219	2019-12-31	0.023000
220	2021-06-30	0.019000
221	2004-09-30	0.022000
222	2005-01-31	0.024000
223	2005-07-29	0.023000
224	2009-04-30	0.031000
225	2012-12-31	0.024000
226	2014-01-31	0.027000
227	2007-03-30	0.030000
228	2013-03-28	0.023000
229	2015-01-30	0.025000
230	2016-12-21	0.004000
231	2019-08-30	0.024000
232	2025-03-31	0.028000
233	2019-05-31	0.025000
234	2022-03-31	0.018000
235	2009-09-30	0.032000
236	2010-08-31	0.032000
237	2011-02-28	0.034000
238	2003-12-31	0.023000
239	2005-03-31	0.024000
240	2007-06-29	0.029000
241	2013-09-30	0.025000
242	2020-03-31	0.023000
243	2021-08-31	0.018000
244	2025-11-28	0.030000
245	2007-09-28	0.035000
246	2008-01-31	0.031000
247	2020-02-28	0.023000
248	2021-01-29	0.025000
249	2004-11-30	0.027000
250	2018-12-31	0.025000
251	2005-05-31	0.023000
252	2011-12-30	0.029000
253	2017-08-31	0.020000
254	2018-08-31	0.023000
255	2022-09-30	0.020000
256	2008-09-30	0.033000
257	2021-09-30	0.018000
258	2022-06-30	0.020000
259	2024-07-31	0.027000
260	2010-09-30	0.031000
261	2011-11-30	0.031000
262	2009-03-31	0.031000
263	2017-05-31	0.022000
264	2017-06-30	0.021000
265	2024-01-31	0.025000
266	2024-10-31	0.027000
267	2004-12-31	0.024000
268	2005-11-30	0.026000
269	2006-11-30	0.030000
270	2010-01-29	0.032000
271	2011-03-31	0.032000
272	2012-06-29	0.026000
273	2023-03-31	0.022000
274	2009-02-27	0.032000
275	2013-12-20	0.072000
276	2014-11-28	0.026000
277	2023-05-31	0.022000
278	2025-04-30	0.029000
279	2003-11-28	0.022000
280	2023-08-31	0.024000

5.5 KiB Raw Blame History

5.5 KiB

Raw Blame History