f/chi-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

5.7 KiB

Raw Blame History

1	Date	Dividends
2	2013-02-08	0.095000
3	2016-07-08	0.095000
4	2016-11-07	0.095000
5	2026-04-14	0.095000
6	2006-02-09	0.150000
7	2007-04-10	0.150000
8	2007-05-09	0.150000
9	2009-12-29	0.095000
10	2017-10-10	0.095000
11	2018-10-11	0.080000
12	2024-03-13	0.095000
13	2002-10-16	0.097000
14	2003-07-16	0.150000
15	2014-04-08	0.095000
16	2015-08-07	0.095000
17	2019-02-11	0.080000
18	2020-06-11	0.080000
19	2002-11-12	0.125000
20	2003-12-29	0.150000
21	2005-04-13	0.150000
22	2007-10-09	0.150000
23	2006-12-27	0.370000
24	2013-09-09	0.095000
25	2023-09-11	0.095000
26	2024-10-15	0.095000
27	2006-05-09	0.150000
28	2009-09-08	0.095000
29	2023-05-11	0.095000
30	2024-05-13	0.095000
31	2022-04-12	0.095000
32	2003-11-13	0.150000
33	2004-02-11	0.150000
34	2009-03-09	0.095000
35	2009-06-08	0.095000
36	2006-07-11	0.150000
37	2023-10-12	0.095000
38	2025-12-30	0.095000
39	2010-05-10	0.095000
40	2016-12-08	0.095000
41	2017-06-08	0.095000
42	2026-08-14	0.095000
43	2004-10-13	0.150000
44	2006-09-07	0.150000
45	2007-09-11	0.150000
46	2008-03-11	0.140000
47	2020-04-13	0.080000
48	2021-09-13	0.095000
49	2004-11-10	0.150000
50	2013-08-08	0.095000
51	2018-07-12	0.095000
52	2019-11-08	0.080000
53	2025-12-12	0.095000
54	2009-07-08	0.095000
55	2012-02-08	0.095000
56	2020-12-30	0.080000
57	2025-07-14	0.095000
58	2010-03-09	0.095000
59	2016-05-09	0.095000
60	2020-09-11	0.080000
61	2021-02-11	0.095000
62	2010-07-08	0.095000
63	2014-12-08	0.095000
64	2018-11-09	0.080000
65	2020-12-11	0.080000
66	2022-10-13	0.095000
67	2022-12-29	0.095000
68	2010-11-08	0.095000
69	2011-04-08	0.095000
70	2017-05-08	0.095000
71	2021-11-10	0.095000
72	2012-06-08	0.095000
73	2015-12-29	0.095000
74	2016-10-06	0.095000
75	2024-06-14	0.095000
76	2018-06-11	0.095000
77	2025-11-14	0.095000
78	2005-05-11	0.150000
79	2008-08-07	0.140000
80	2009-10-07	0.095000
81	2017-12-28	0.095000
82	2017-09-11	0.095000
83	2023-03-13	0.095000
84	2024-11-13	0.095000
85	2003-03-14	0.125000
86	2009-08-06	0.095000
87	2017-03-08	0.095000
88	2017-04-07	0.095000
89	2013-04-08	0.095000
90	2013-07-08	0.095000
91	2013-11-07	0.095000
92	2016-12-28	0.095000
93	2004-04-13	0.150000
94	2004-12-30	1.036000
95	2006-12-04	0.150000
96	2009-11-06	0.095000
97	2021-10-08	0.095000
98	2024-08-09	0.095000
99	2022-12-09	0.095000
100	2026-05-14	0.095000
101	2015-06-08	0.095000
102	2019-05-10	0.080000
103	2019-08-09	0.080000
104	2019-09-13	0.080000
105	2006-10-10	0.150000
106	2019-04-11	0.080000
107	2020-08-13	0.080000
108	2026-02-13	0.095000
109	2022-02-11	0.095000
110	2025-04-11	0.095000
111	2003-10-15	0.150000
112	2013-05-08	0.095000
113	2015-09-08	0.095000
114	2015-12-08	0.095000
115	2013-06-07	0.095000
116	2008-12-04	0.095000
117	2003-02-13	0.125000
118	2005-02-10	0.150000
119	2005-07-13	0.150000
120	2007-07-10	0.150000
121	2002-12-06	0.125000
122	2015-07-08	0.095000
123	2011-11-08	0.095000
124	2022-09-12	0.095000
125	2023-04-13	0.095000
126	2016-06-08	0.095000
127	2020-11-12	0.080000
128	2023-06-09	0.095000
129	2010-02-05	0.095000
130	2014-11-06	0.095000
131	2017-07-07	0.095000
132	2018-02-09	0.095000
133	2006-11-09	0.150000
134	2007-06-07	0.150000
135	2009-02-06	0.095000
136	2012-05-08	0.095000
137	2016-09-08	0.095000
138	2007-12-04	0.140000
139	2011-07-08	0.095000
140	2019-06-13	0.080000
141	2022-03-11	0.095000
142	2012-10-09	0.095000
143	2024-12-13	0.095000
144	2025-06-12	0.095000
145	2006-04-11	0.150000
146	2012-03-08	0.095000
147	2017-02-08	0.095000
148	2021-04-13	0.095000
149	2016-02-08	0.095000
150	2017-08-08	0.095000
151	2017-11-09	0.095000
152	2023-08-10	0.095000
153	2002-08-15	0.097000
154	2005-08-11	0.150000
155	2006-06-08	0.150000
156	2015-05-08	0.095000
157	2004-03-11	0.150000
158	2012-11-08	0.095000
159	2011-12-08	0.095000
160	2011-12-28	0.095000
161	2020-02-13	0.080000
162	2019-10-11	0.080000
163	2022-08-11	0.095000
164	2024-04-11	0.095000
165	2008-09-04	0.140000
166	2008-12-29	0.095000
167	2009-04-08	0.095000
168	2010-08-06	0.095000
169	2014-12-29	0.095000
170	2018-09-14	0.095000
171	2004-08-12	0.150000
172	2004-09-13	0.150000
173	2004-12-09	0.150000
174	2010-04-09	0.095000
175	2005-10-12	0.150000
176	2014-09-08	0.095000
177	2019-12-12	0.080000
178	2021-03-11	0.095000
179	2011-10-06	0.095000
180	2016-03-08	0.095000
181	2024-12-30	0.095000
182	2025-02-13	0.095000
183	2007-08-09	0.150000
184	2012-12-27	0.095000
185	2013-12-27	0.095000
186	2021-12-13	0.095000
187	2002-09-13	0.097000
188	2005-06-13	0.150000
189	2017-12-11	0.095000
190	2024-09-13	0.095000
191	2015-10-07	0.095000
192	2019-12-30	0.080000
193	2021-12-30	0.095000
194	2022-05-12	0.095000
195	2005-12-28	0.444000
196	2012-04-09	0.095000
197	2012-12-07	0.095000
198	2014-03-07	0.095000
199	2025-03-13	0.095000
200	2021-07-12	0.095000
201	2023-12-11	0.095000
202	2003-04-15	0.125000
203	2008-04-09	0.140000
204	2008-06-10	0.140000
205	2013-03-08	0.095000
206	2020-03-12	0.080000
207	2020-10-13	0.080000
208	2022-07-12	0.095000
209	2003-12-10	0.605000
210	2005-09-13	0.150000
211	2008-02-07	0.140000
212	2011-02-08	0.095000
213	2020-07-10	0.080000
214	2022-06-10	0.095000
215	2006-08-09	0.150000
216	2007-12-27	0.174000
217	2014-10-07	0.095000
218	2019-03-11	0.080000
219	2004-05-12	0.150000
220	2011-06-08	0.095000
221	2025-09-15	0.095000
222	2003-08-14	0.150000
223	2003-09-16	0.150000
224	2012-09-07	0.095000
225	2018-05-11	0.095000
226	2004-07-13	0.150000
227	2019-07-11	0.080000
228	2009-12-03	0.095000
229	2015-03-09	0.095000
230	2005-12-13	0.150000
231	2015-02-06	0.095000
232	2024-02-09	0.095000
233	2010-06-08	0.095000
234	2014-06-09	0.095000
235	2010-09-08	0.095000
236	2010-10-07	0.095000
237	2025-05-13	0.095000
238	2018-03-09	0.095000
239	2026-06-12	0.095000
240	2006-03-09	0.150000
241	2007-02-08	0.150000
242	2009-05-07	0.095000
243	2014-05-08	0.095000
244	2002-12-27	0.140000
245	2011-09-08	0.095000
246	2014-07-08	0.095000
247	2016-08-08	0.095000
248	2011-08-08	0.095000
249	2020-05-12	0.080000
250	2005-11-14	0.150000
251	2007-03-08	0.150000
252	2007-11-07	0.150000
253	2011-03-08	0.095000
254	2024-07-12	0.095000
255	2008-11-10	0.095000
256	2010-12-29	0.095000
257	2014-08-08	0.095000
258	2018-08-10	0.095000
259	2004-06-14	0.150000
260	2015-04-08	0.095000
261	2008-10-09	0.140000
262	2011-05-09	0.095000
263	2012-08-08	0.095000
264	2018-12-28	0.080000
265	2008-07-09	0.140000
266	2015-11-06	0.095000
267	2021-05-13	0.095000
268	2021-06-11	0.095000
269	2023-02-10	0.095000
270	2023-12-28	0.095000
271	2003-05-19	0.125000
272	2010-12-03	0.095000
273	2018-04-12	0.095000
274	2021-08-12	0.095000
275	2005-03-10	0.150000
276	2016-04-08	0.095000
277	2022-11-10	0.095000
278	2003-06-13	0.150000
279	2008-05-08	0.140000
280	2023-07-13	0.095000
281	2023-11-13	0.095000
282	2026-07-14	0.095000
283	2013-10-08	0.095000
284	2014-02-07	0.095000
285	2025-10-15	0.095000
286	2026-03-13	0.095000
287	2012-07-09	0.095000
288	2013-12-09	0.095000
289	2018-12-13	0.080000
290	2025-08-14	0.095000

5.7 KiB Raw Blame History

5.7 KiB

Raw Blame History