f/chy-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

5.4 KiB

Raw Blame History

1	Date	Dividends
2	2014-02-07	0.085000
3	2023-05-11	0.100000
4	2026-07-14	0.100000
5	2013-08-08	0.085000
6	2016-11-07	0.100000
7	2022-05-12	0.100000
8	2023-12-28	0.100000
9	2024-11-13	0.100000
10	2015-07-08	0.100000
11	2011-10-06	0.085000
12	2012-07-09	0.085000
13	2017-12-28	0.100000
14	2018-10-11	0.085000
15	2022-04-12	0.100000
16	2022-07-12	0.100000
17	2004-04-13	0.122000
18	2010-04-09	0.085000
19	2017-10-10	0.100000
20	2018-12-28	0.085000
21	2024-04-11	0.100000
22	2006-07-11	0.122000
23	2020-12-11	0.085000
24	2005-11-14	0.122000
25	2009-05-07	0.085000
26	2010-09-08	0.085000
27	2024-08-09	0.100000
28	2004-08-12	0.122000
29	2006-06-08	0.122000
30	2007-04-10	0.122000
31	2010-06-08	0.085000
32	2010-12-03	0.085000
33	2012-11-08	0.085000
34	2005-09-13	0.122000
35	2008-12-29	0.085000
36	2009-07-08	0.085000
37	2015-12-08	0.100000
38	2017-04-07	0.100000
39	2021-09-13	0.100000
40	2025-04-11	0.100000
41	2006-02-09	0.122000
42	2012-04-09	0.085000
43	2018-06-11	0.100000
44	2021-10-08	0.100000
45	2022-12-09	0.100000
46	2022-12-29	0.100000
47	2007-11-07	0.122000
48	2019-03-11	0.085000
49	2019-12-30	0.085000
50	2020-02-13	0.085000
51	2023-04-13	0.100000
52	2015-10-07	0.100000
53	2008-10-09	0.122000
54	2009-08-06	0.085000
55	2019-12-12	0.085000
56	2022-10-13	0.100000
57	2003-11-13	0.122000
58	2010-08-06	0.085000
59	2012-06-08	0.085000
60	2013-12-27	0.085000
61	2018-11-09	0.085000
62	2019-04-11	0.085000
63	2007-10-09	0.122000
64	2014-08-08	0.100000
65	2015-09-08	0.100000
66	2021-02-11	0.100000
67	2024-09-13	0.100000
68	2003-08-14	0.122000
69	2016-06-08	0.100000
70	2023-06-09	0.100000
71	2004-07-13	0.122000
72	2007-08-09	0.122000
73	2012-05-08	0.085000
74	2016-05-09	0.100000
75	2023-03-13	0.100000
76	2007-06-07	0.122000
77	2019-09-13	0.085000
78	2014-12-08	0.100000
79	2009-03-09	0.085000
80	2011-12-08	0.085000
81	2014-09-08	0.100000
82	2022-02-11	0.100000
83	2003-12-29	0.122000
84	2011-09-08	0.085000
85	2016-03-08	0.100000
86	2024-05-13	0.100000
87	2011-05-09	0.085000
88	2009-12-03	0.085000
89	2012-09-07	0.085000
90	2013-05-08	0.085000
91	2021-07-12	0.100000
92	2022-06-10	0.100000
93	2005-02-10	0.122000
94	2012-08-08	0.085000
95	2019-05-10	0.085000
96	2023-07-13	0.100000
97	2008-06-10	0.122000
98	2004-10-13	0.122000
99	2008-07-09	0.122000
100	2013-04-08	0.085000
101	2017-07-07	0.100000
102	2020-06-11	0.085000
103	2020-10-13	0.085000
104	2022-03-11	0.100000
105	2003-10-15	0.122000
106	2019-08-09	0.085000
107	2007-03-08	0.122000
108	2006-11-09	0.122000
109	2008-12-04	0.085000
110	2005-06-13	0.122000
111	2015-06-08	0.100000
112	2016-10-06	0.100000
113	2021-06-11	0.100000
114	2008-03-11	0.122000
115	2008-04-09	0.122000
116	2018-04-12	0.100000
117	2025-09-15	0.100000
118	2007-05-09	0.122000
119	2016-09-08	0.100000
120	2024-12-13	0.100000
121	2004-06-14	0.122000
122	2011-12-28	0.085000
123	2007-02-08	0.122000
124	2010-12-29	0.085000
125	2013-02-08	0.085000
126	2013-07-08	0.085000
127	2015-08-07	0.100000
128	2022-08-11	0.100000
129	2025-11-14	0.100000
130	2006-03-09	0.122000
131	2026-06-12	0.100000
132	2018-09-14	0.100000
133	2020-08-13	0.085000
134	2010-10-07	0.085000
135	2009-10-07	0.085000
136	2025-12-30	0.100000
137	2006-04-11	0.122000
138	2014-07-08	0.100000
139	2017-09-11	0.100000
140	2018-12-13	0.085000
141	2024-12-30	0.100000
142	2008-08-07	0.122000
143	2014-03-07	0.085000
144	2024-02-09	0.100000
145	2007-12-04	0.122000
146	2008-11-10	0.085000
147	2013-10-08	0.085000
148	2017-06-08	0.100000
149	2018-08-10	0.100000
150	2019-10-11	0.085000
151	2006-10-10	0.122000
152	2025-12-12	0.100000
153	2012-10-09	0.085000
154	2015-03-09	0.100000
155	2019-07-11	0.085000
156	2003-09-16	0.122000
157	2009-06-08	0.085000
158	2012-02-08	0.085000
159	2012-03-08	0.085000
160	2013-06-07	0.085000
161	2018-02-09	0.100000
162	2024-03-13	0.100000
163	2006-05-09	0.122000
164	2007-09-11	0.122000
165	2008-02-07	0.122000
166	2025-10-15	0.100000
167	2005-12-28	0.214000
168	2016-04-08	0.100000
169	2021-08-12	0.100000
170	2006-12-27	0.145000
171	2004-09-13	0.122000
172	2009-11-06	0.085000
173	2015-02-06	0.100000
174	2004-03-11	0.122000
175	2019-02-11	0.085000
176	2021-11-10	0.100000
177	2023-12-11	0.100000
178	2026-02-13	0.100000
179	2016-07-08	0.100000
180	2014-04-08	0.100000
181	2015-04-08	0.100000
182	2016-02-08	0.100000
183	2018-07-12	0.100000
184	2019-11-08	0.085000
185	2023-02-10	0.100000
186	2009-04-08	0.085000
187	2014-12-29	0.100000
188	2017-11-09	0.100000
189	2024-07-12	0.100000
190	2005-05-11	0.122000
191	2010-11-08	0.085000
192	2020-07-10	0.085000
193	2025-06-12	0.100000
194	2005-03-10	0.122000
195	2013-12-09	0.085000
196	2020-05-12	0.085000
197	2025-08-14	0.100000
198	2011-02-08	0.085000
199	2009-12-29	0.085000
200	2010-05-10	0.085000
201	2020-04-13	0.085000
202	2021-04-13	0.100000
203	2007-12-27	0.227000
204	2014-10-07	0.100000
205	2016-08-08	0.100000
206	2016-12-08	0.100000
207	2025-05-13	0.100000
208	2009-02-06	0.085000
209	2017-12-11	0.100000
210	2021-12-30	0.100000
211	2022-11-10	0.100000
212	2025-02-13	0.100000
213	2004-11-10	0.122000
214	2014-06-09	0.100000
215	2020-03-12	0.085000
216	2023-10-12	0.100000
217	2014-05-08	0.100000
218	2020-09-11	0.085000
219	2022-09-12	0.100000
220	2023-09-11	0.100000
221	2010-07-08	0.085000
222	2011-06-08	0.085000
223	2013-11-07	0.085000
224	2015-11-06	0.100000
225	2019-06-13	0.085000
226	2021-03-11	0.100000
227	2021-05-13	0.100000
228	2026-04-14	0.100000
229	2006-08-09	0.122000
230	2005-12-13	0.122000
231	2006-09-07	0.122000
232	2011-11-08	0.085000
233	2013-03-08	0.085000
234	2013-09-09	0.085000
235	2014-11-06	0.100000
236	2017-03-08	0.100000
237	2005-10-12	0.122000
238	2012-12-27	0.085000
239	2017-02-08	0.100000
240	2026-03-13	0.100000
241	2026-08-14	0.100000
242	2005-08-11	0.122000
243	2004-05-12	0.122000
244	2011-08-08	0.085000
245	2017-05-08	0.100000
246	2017-08-08	0.100000
247	2011-03-08	0.085000
248	2005-04-13	0.122000
249	2005-07-13	0.122000
250	2007-07-10	0.122000
251	2011-04-08	0.085000
252	2021-12-13	0.100000
253	2004-12-09	0.122000
254	2025-03-13	0.100000
255	2025-07-14	0.100000
256	2004-02-11	0.122000
257	2006-12-04	0.122000
258	2008-05-08	0.122000
259	2011-07-08	0.085000
260	2016-12-28	0.100000
261	2004-12-28	0.122000
262	2009-09-08	0.085000
263	2010-03-09	0.085000
264	2008-09-04	0.122000
265	2023-11-13	0.100000
266	2024-06-14	0.100000
267	2012-12-07	0.085000
268	2020-11-12	0.085000
269	2020-12-30	0.085000
270	2026-05-14	0.100000
271	2015-12-29	0.100000
272	2010-02-05	0.085000
273	2015-05-08	0.100000
274	2018-03-09	0.100000
275	2018-05-11	0.100000
276	2003-12-10	0.122000
277	2024-10-15	0.100000
278	2023-08-10	0.100000

5.4 KiB Raw Blame History

5.4 KiB

Raw Blame History