f/nchax-dividend.csv at 19b33d5a18a5f2c124bf1e0a7de3acea9d711f4b

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

4.8 KiB

Raw Blame History

1	Date	Dividends
2	2014-11-13	0.007000
3	2024-10-31	0.027000
4	2012-07-31	0.042000
5	2015-03-31	0.034000
6	2017-06-30	0.031000
7	2017-11-30	0.031000
8	2023-01-31	0.031000
9	2024-12-31	0.029000
10	2012-01-31	0.043000
11	2013-10-31	0.035000
12	2014-05-30	0.035000
13	2009-07-31	0.041000
14	2009-10-30	0.041000
15	2011-01-31	0.041000
16	2013-04-30	0.037000
17	2022-04-29	0.033000
18	2006-08-10	0.038000
19	2007-06-11	0.038000
20	2012-03-30	0.043000
21	2020-01-31	0.031000
22	2011-09-30	0.043000
23	2014-01-31	0.035000
24	2014-12-31	0.035000
25	2019-06-28	0.031000
26	2023-02-28	0.028000
27	2010-12-31	0.041000
28	2013-06-28	0.035000
29	2019-05-31	0.031000
30	2025-01-31	0.029000
31	2012-12-31	0.041000
32	2012-11-30	0.041000
33	2013-02-28	0.037000
34	2020-06-30	0.031000
35	2012-05-31	0.042000
36	2013-12-31	0.035000
37	2015-02-27	0.034000
38	2020-03-31	0.031000
39	2026-02-27	0.029000
40	2023-07-31	0.028000
41	2009-09-30	0.041000
42	2010-06-30	0.041000
43	2018-05-31	0.031000
44	2018-10-31	0.031000
45	2019-12-31	0.031000
46	2020-12-31	0.033000
47	2022-06-30	0.033000
48	2008-12-24	0.038000
49	2013-09-30	0.035000
50	2011-12-30	0.043000
51	2013-03-28	0.037000
52	2016-01-29	0.034000
53	2018-03-29	0.031000
54	2007-07-10	0.038000
55	2008-05-30	0.038000
56	2012-10-31	0.042000
57	2015-06-30	0.034000
58	2025-03-31	0.029000
59	2011-04-29	0.042000
60	2013-11-29	0.035000
61	2014-02-28	0.035000
62	2021-04-30	0.033000
63	2025-11-28	0.029000
64	2026-03-31	0.029000
65	2008-06-30	0.038000
66	2016-05-31	0.032000
67	2021-08-31	0.033000
68	2022-07-29	0.033000
69	2025-10-31	0.029000
70	2008-10-31	0.038000
71	2008-11-28	0.038000
72	2014-07-31	0.035000
73	2014-10-31	0.035000
74	2020-11-30	0.033000
75	2021-01-29	0.033000
76	2023-04-28	0.028000
77	2006-05-10	0.038000
78	2007-05-10	0.038000
79	2010-10-29	0.041000
80	2021-02-26	0.033000
81	2021-11-30	0.033000
82	2022-05-31	0.033000
83	2006-07-10	0.038000
84	2021-05-28	0.033000
85	2023-10-31	0.027000
86	2010-01-29	0.041000
87	2011-06-30	0.042000
88	2015-05-29	0.034000
89	2015-11-16	0.008000
90	2006-10-10	0.038000
91	2007-03-12	0.038000
92	2009-11-30	0.041000
93	2015-01-30	0.035000
94	2017-12-29	0.031000
95	2011-08-31	0.043000
96	2016-08-31	0.032000
97	2019-04-30	0.031000
98	2022-09-30	0.033000
99	2007-09-10	0.038000
100	2014-03-31	0.035000
101	2017-08-31	0.031000
102	2025-04-30	0.029000
103	2017-09-29	0.031000
104	2024-11-29	0.029000
105	2025-07-31	0.029000
106	2026-04-30	0.029000
107	2010-08-31	0.041000
108	2011-03-31	0.042000
109	2013-01-31	0.041000
110	2015-08-31	0.034000
111	2018-08-31	0.031000
112	2020-08-31	0.031000
113	2021-07-30	0.033000
114	2022-10-31	0.033000
115	2009-01-30	0.038000
116	2015-04-30	0.034000
117	2016-12-30	0.031000
118	2018-01-31	0.031000
119	2022-03-31	0.033000
120	2009-12-24	0.041000
121	2013-07-31	0.035000
122	2022-01-31	0.033000
123	2025-09-30	0.029000
124	2018-06-29	0.031000
125	2009-08-31	0.041000
126	2019-09-30	0.031000
127	2026-06-30	0.030000
128	2008-07-31	0.038000
129	2015-10-30	0.034000
130	2019-08-30	0.031000
131	2026-01-30	0.029000
132	2007-11-29	0.038000
133	2013-05-31	0.035000
134	2009-05-29	0.041000
135	2012-02-29	0.043000
136	2023-06-30	0.028000
137	2023-12-29	0.027000
138	2007-02-12	0.038000
139	2018-02-28	0.031000
140	2010-02-26	0.041000
141	2011-10-31	0.043000
142	2017-02-28	0.031000
143	2021-12-31	0.033000
144	2016-09-30	0.032000
145	2017-10-31	0.031000
146	2018-04-30	0.031000
147	2024-02-29	0.027000
148	2023-08-31	0.028000
149	2020-02-28	0.031000
150	2006-11-10	0.038000
151	2014-11-28	0.035000
152	2025-08-29	0.029000
153	2007-12-24	0.038000
154	2010-07-30	0.041000
155	2012-09-28	0.042000
156	2014-08-29	0.035000
157	2019-11-29	0.031000
158	2020-09-30	0.031000
159	2016-07-29	0.032000
160	2018-07-31	0.031000
161	2018-12-31	0.031000
162	2008-02-29	0.038000
163	2017-01-31	0.031000
164	2010-05-28	0.041000
165	2017-05-31	0.031000
166	2021-03-31	0.033000
167	2021-10-29	0.033000
168	2022-11-30	0.033000
169	2026-07-31	0.030000
170	2016-06-30	0.032000
171	2017-03-31	0.031000
172	2023-05-31	0.028000
173	2024-05-31	0.027000
174	2024-08-30	0.027000
175	2007-04-10	0.038000
176	2009-03-31	0.041000
177	2016-10-31	0.032000
178	2019-02-28	0.031000
179	2021-06-30	0.033000
180	2009-04-30	0.041000
181	2009-06-30	0.041000
182	2016-11-30	0.031000
183	2019-03-29	0.031000
184	2020-10-30	0.031000
185	2006-06-12	0.038000
186	2006-12-11	0.038000
187	2008-04-30	0.038000
188	2009-11-10	0.003000
189	2011-11-30	0.043000
190	2012-08-31	0.042000
191	2025-02-28	0.029000
192	2026-05-29	0.030000
193	2023-09-29	0.027000
194	2008-08-29	0.038000
195	2010-03-31	0.041000
196	2010-11-30	0.041000
197	2015-09-30	0.034000
198	2016-04-29	0.034000
199	2017-04-28	0.031000
200	2021-09-30	0.033000
201	2024-09-30	0.027000
202	2015-07-31	0.034000
203	2017-11-15	0.004000
204	2019-07-31	0.031000
205	2024-07-31	0.027000
206	2008-09-30	0.038000
207	2020-05-29	0.031000
208	2020-07-31	0.031000
209	2025-05-30	0.029000
210	2008-03-31	0.038000
211	2012-06-29	0.042000
212	2008-01-31	0.038000
213	2016-11-15	0.002000
214	2018-11-30	0.031000
215	2023-03-31	0.028000
216	2025-06-30	0.029000
217	2025-12-31	0.029000
218	2007-01-10	0.038000
219	2007-10-10	0.038000
220	2012-04-30	0.043000
221	2024-06-28	0.027000
222	2022-02-28	0.033000
223	2022-12-30	0.030000
224	2023-11-30	0.027000
225	2024-01-31	0.027000
226	2009-02-27	0.041000
227	2024-03-28	0.027000
228	2011-02-28	0.042000
229	2011-05-31	0.042000
230	2014-04-30	0.035000
231	2014-06-30	0.035000
232	2016-02-29	0.034000
233	2016-03-31	0.034000
234	2020-04-30	0.031000
235	2006-09-11	0.038000
236	2010-09-30	0.041000
237	2015-12-31	0.034000
238	2018-09-28	0.031000
239	2007-08-10	0.038000
240	2011-07-29	0.042000
241	2013-08-30	0.035000
242	2024-04-30	0.027000
243	2014-09-30	0.035000
244	2017-07-31	0.031000
245	2019-01-31	0.031000
246	2019-10-31	0.031000
247	2022-08-31	0.033000

4.8 KiB Raw Blame History

4.8 KiB

Raw Blame History