f/ecctx-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

4.8 KiB

Raw Blame History

1	Date	Dividends
2	2008-01-31	0.030000
3	2017-10-31	0.020000
4	2024-01-31	0.017000
5	2008-10-31	0.031000
6	2012-05-31	0.027000
7	2025-08-29	0.018000
8	2018-01-31	0.019000
9	2024-03-28	0.018000
10	2021-03-31	0.013000
11	2025-06-30	0.018000
12	2008-02-29	0.028000
13	2012-12-31	0.025000
14	2019-08-30	0.017000
15	2010-03-31	0.030000
16	2019-11-29	0.017000
17	2020-11-30	0.016000
18	2014-12-31	0.023000
19	2021-10-29	0.011000
20	2023-03-31	0.014000
21	2023-05-31	0.015000
22	2025-05-30	0.018000
23	2006-09-29	0.029000
24	2007-09-28	0.029000
25	2013-10-31	0.026000
26	2018-05-31	0.021000
27	2020-01-31	0.014000
28	2026-06-30	0.020000
29	2006-08-31	0.030000
30	2007-01-31	0.030000
31	2008-04-30	0.029000
32	2018-06-29	0.021000
33	2020-04-30	0.018000
34	2026-04-30	0.019000
35	2006-05-31	0.030000
36	2007-06-29	0.029000
37	2009-04-30	0.031000
38	2017-07-31	0.021000
39	2021-06-30	0.014000
40	2023-12-29	0.016000
41	2007-03-30	0.030000
42	2010-10-29	0.029000
43	2012-01-31	0.027000
44	2008-11-28	0.030000
45	2016-04-29	0.023000
46	2018-11-30	0.019000
47	2019-03-29	0.018000
48	2019-12-31	0.017000
49	2021-11-30	0.012000
50	2023-02-28	0.016000
51	2024-06-28	0.018000
52	2006-11-30	0.029000
53	2009-08-31	0.031000
54	2011-11-30	0.029000
55	2023-08-31	0.016000
56	2024-07-31	0.018000
57	2016-02-29	0.023000
58	2016-09-30	0.021000
59	2018-09-28	0.019000
60	2006-04-28	0.029000
61	2011-06-30	0.029000
62	2012-09-28	0.026000
63	2021-01-29	0.013000
64	2025-10-31	0.018000
65	2026-03-31	0.018000
66	2024-09-30	0.019000
67	2012-07-31	0.026000
68	2015-12-31	0.023000
69	2022-11-30	0.014000
70	2024-12-31	0.018000
71	2007-08-31	0.030000
72	2008-07-31	0.030000
73	2008-09-30	0.030000
74	2009-07-31	0.031000
75	2015-01-30	0.022000
76	2025-12-31	0.018000
77	2008-05-30	0.030000
78	2020-12-31	0.014000
79	2013-11-29	0.026000
80	2006-03-31	0.030000
81	2008-08-29	0.031000
82	2012-02-29	0.030000
83	2012-10-31	0.026000
84	2023-10-31	0.017000
85	2021-05-28	0.013000
86	2013-07-31	0.025000
87	2014-11-28	0.024000
88	2020-06-30	0.017000
89	2010-08-31	0.029000
90	2012-06-29	0.027000
91	2017-03-31	0.020000
92	2016-03-31	0.023000
93	2017-08-31	0.020000
94	2009-12-31	0.031000
95	2010-05-28	0.029000
96	2015-03-31	0.023000
97	2022-06-30	0.013000
98	2024-05-31	0.017000
99	2025-03-31	0.017000
100	2009-06-30	0.030000
101	2010-07-30	0.029000
102	2015-11-30	0.023000
103	2011-07-29	0.030000
104	2016-05-31	0.022000
105	2018-02-28	0.022000
106	2018-04-30	0.021000
107	2019-06-28	0.018000
108	2008-03-31	0.030000
109	2008-06-30	0.029000
110	2009-10-30	0.031000
111	2021-04-30	0.013000
112	2022-02-28	0.013000
113	2026-01-30	0.017000
114	2018-12-31	0.019000
115	2019-02-28	0.020000
116	2022-08-31	0.013000
117	2024-04-30	0.017000
118	2006-06-30	0.029000
119	2014-04-30	0.025000
120	2016-08-31	0.021000
121	2019-07-31	0.017000
122	2021-02-26	0.015000
123	2022-05-31	0.011000
124	2007-12-31	0.030000
125	2018-10-31	0.019000
126	2019-01-31	0.018000
127	2024-11-29	0.018000
128	2009-03-31	0.032000
129	2010-02-26	0.028000
130	2021-12-31	0.011000
131	2012-11-30	0.026000
132	2013-05-31	0.024000
133	2017-01-31	0.020000
134	2007-11-30	0.029000
135	2009-11-30	0.030000
136	2010-12-31	0.029000
137	2006-12-29	0.030000
138	2013-08-30	0.026000
139	2014-06-30	0.025000
140	2007-02-28	0.027000
141	2020-10-30	0.014000
142	2021-07-30	0.011000
143	2025-02-28	0.018000
144	2011-10-31	0.029000
145	2014-05-30	0.025000
146	2018-08-31	0.018000
147	2011-05-31	0.029000
148	2013-06-28	0.025000
149	2020-08-31	0.014000
150	2026-07-31	0.017000
151	2011-04-29	0.029000
152	2014-09-30	0.024000
153	2025-07-31	0.018000
154	2020-07-31	0.016000
155	2022-03-31	0.011000
156	2026-02-27	0.018000
157	2026-05-29	0.018000
158	2006-10-31	0.030000
159	2013-12-31	0.025000
160	2019-10-31	0.018000
161	2012-08-31	0.026000
162	2013-04-30	0.025000
163	2020-03-31	0.017000
164	2007-07-31	0.030000
165	2015-09-30	0.023000
166	2022-01-31	0.011000
167	2008-12-31	0.032000
168	2010-06-30	0.028000
169	2011-12-30	0.028000
170	2021-09-30	0.012000
171	2017-12-29	0.021000
172	2018-07-31	0.018000
173	2009-05-29	0.032000
174	2009-09-30	0.030000
175	2013-02-28	0.025000
176	2016-11-30	0.020000
177	2013-01-31	0.024000
178	2013-03-28	0.024000
179	2014-01-31	0.027000
180	2014-08-29	0.024000
181	2009-02-27	0.029000
182	2015-07-31	0.022000
183	2022-09-30	0.014000
184	2020-05-29	0.016000
185	2010-11-30	0.029000
186	2011-08-31	0.029000
187	2014-07-31	0.024000
188	2006-02-28	0.015000
189	2023-01-31	0.013000
190	2007-04-30	0.029000
191	2015-10-30	0.022000
192	2023-04-28	0.015000
193	2021-08-31	0.011000
194	2022-04-29	0.012000
195	2025-01-31	0.017000
196	2025-11-28	0.018000
197	2016-10-31	0.021000
198	2017-06-30	0.021000
199	2017-11-30	0.021000
200	2012-03-30	0.026000
201	2014-10-31	0.024000
202	2015-08-31	0.022000
203	2016-12-30	0.020000
204	2023-06-30	0.016000
205	2024-02-29	0.018000
206	2007-10-31	0.030000
207	2011-09-30	0.029000
208	2014-02-28	0.027000
209	2019-04-30	0.019000
210	2010-01-29	0.031000
211	2013-09-30	0.026000
212	2017-04-28	0.021000
213	2017-09-29	0.021000
214	2024-10-31	0.018000
215	2025-09-30	0.018000
216	2016-06-30	0.022000
217	2010-04-30	0.023000
218	2010-09-30	0.028000
219	2016-01-29	0.021000
220	2025-04-30	0.020000
221	2022-07-29	0.012000
222	2022-10-31	0.014000
223	2023-07-31	0.016000
224	2007-05-31	0.030000
225	2012-04-30	0.027000
226	2016-07-29	0.021000
227	2023-09-29	0.017000
228	2011-02-28	0.031000
229	2018-03-29	0.021000
230	2020-02-28	0.018000
231	2006-07-31	0.030000
232	2009-01-30	0.032000
233	2022-12-30	0.014000
234	2017-05-31	0.021000
235	2019-09-30	0.019000
236	2015-06-30	0.024000
237	2020-09-30	0.014000
238	2014-03-31	0.026000
239	2015-02-27	0.024000
240	2015-05-29	0.024000
241	2023-11-30	0.017000
242	2011-01-31	0.031000
243	2011-03-31	0.030000
244	2015-04-30	0.024000
245	2017-02-28	0.022000
246	2019-05-31	0.017000
247	2024-08-30	0.018000

4.8 KiB Raw Blame History

4.8 KiB

Raw Blame History