f/acskx-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

4.5 KiB

Raw Blame History

1	Date	Dividends
2	2006-12-29	0.028000
3	2017-05-31	0.007000
4	2022-11-30	0.017000
5	2024-08-30	0.032000
6	2009-12-08	0.065000
7	2011-04-29	0.007000
8	2016-10-31	0.005000
9	2017-08-31	0.008000
10	2018-05-31	0.011000
11	2021-11-30	0.002000
12	2008-12-31	0.012000
13	2011-07-29	0.006000
14	2015-01-30	0.008000
15	2016-01-29	0.005000
16	2022-04-29	0.003000
17	2022-08-31	0.009000
18	2022-01-31	0.004000
19	2025-01-31	0.032000
20	2008-04-30	0.024000
21	2009-03-31	0.014000
22	2011-11-30	0.005000
23	2013-07-31	0.002000
24	2014-08-29	0.007000
25	2018-09-28	0.012000
26	2008-11-28	0.014000
27	2017-01-31	0.005000
28	2026-06-30	0.025000
29	2008-09-30	0.020000
30	2010-01-29	0.011000
31	2012-04-30	0.004000
32	2017-02-28	0.008000
33	2020-05-29	0.004000
34	2023-07-31	0.023000
35	2007-07-31	0.030000
36	2008-02-29	0.024000
37	2026-01-30	0.027000
38	2008-08-29	0.024000
39	2014-09-30	0.009000
40	2011-02-28	0.007000
41	2021-09-30	0.004000
42	2008-10-31	0.013000
43	2008-01-31	0.029000
44	2009-08-31	0.012000
45	2018-06-29	0.012000
46	2009-11-30	0.011000
47	2019-02-28	0.017000
48	2022-07-29	0.010000
49	2022-10-31	0.013000
50	2007-03-30	0.031000
51	2013-09-30	0.002000
52	2021-06-30	0.007000
53	2023-08-31	0.026000
54	2022-06-30	0.008000
55	2012-11-30	0.003000
56	2016-09-30	0.005000
57	2007-05-31	0.030000
58	2014-06-30	0.008000
59	2014-10-31	0.008000
60	2025-03-31	0.029000
61	2016-03-31	0.005000
62	2020-02-28	0.007000
63	2021-04-30	0.006000
64	2020-12-31	0.001000
65	2010-11-30	0.008000
66	2012-06-29	0.002000
67	2013-05-31	0.002000
68	2015-11-30	0.005000
69	2008-12-09	0.075000
70	2010-05-28	0.010000
71	2010-08-31	0.007000
72	2018-11-30	0.017000
73	2018-12-31	0.014000
74	2023-10-31	0.027000
75	2017-06-30	0.008000
76	2018-07-31	0.012000
77	2019-03-29	0.016000
78	2024-04-30	0.029000
79	2024-09-30	0.027000
80	2009-04-30	0.013000
81	2015-10-30	0.004000
82	2018-02-28	0.010000
83	2021-03-31	0.004000
84	2024-03-28	0.028000
85	2014-11-28	0.008000
86	2019-06-28	0.014000
87	2020-08-31	0.004000
88	2021-12-07	0.039000
89	2024-02-29	0.027000
90	2024-05-31	0.030000
91	2018-10-31	0.015000
92	2020-10-30	0.006000
93	2025-08-29	0.031000
94	2007-01-31	0.026000
95	2021-08-31	0.004000
96	2007-11-30	0.029000
97	2008-07-31	0.028000
98	2015-02-27	0.010000
99	2019-11-29	0.010000
100	2021-07-30	0.002000
101	2007-06-29	0.030000
102	2007-10-31	0.029000
103	2009-07-31	0.012000
104	2016-05-31	0.005000
105	2016-02-29	0.007000
106	2017-07-31	0.008000
107	2019-07-31	0.013000
108	2010-03-31	0.011000
109	2011-01-31	0.006000
110	2013-11-29	0.004000
111	2025-12-31	0.029000
112	2010-12-10	0.011000
113	2013-06-28	0.001000
114	2013-12-06	0.007000
115	2026-05-29	0.025000
116	2007-08-31	0.032000
117	2020-04-30	0.007000
118	2020-09-30	0.006000
119	2021-05-28	0.006000
120	2011-12-30	0.104000
121	2015-04-30	0.007000
122	2021-12-31	0.007000
123	2010-02-26	0.009000
124	2019-08-30	0.014000
125	2007-12-31	0.027000
126	2009-12-31	0.011000
127	2015-06-30	0.005000
128	2016-11-30	0.006000
129	2009-10-30	0.011000
130	2012-10-31	0.002000
131	2013-10-31	0.002000
132	2022-12-30	0.021000
133	2012-02-29	0.006000
134	2016-07-29	0.005000
135	2024-06-28	0.028000
136	2024-12-31	0.030000
137	2007-04-30	0.028000
138	2012-03-30	0.004000
139	2023-02-28	0.019000
140	2007-09-28	0.025000
141	2013-12-31	0.004000
142	2014-02-28	0.006000
143	2014-04-30	0.006000
144	2016-06-30	0.006000
145	2016-12-30	0.005000
146	2020-01-31	0.007000
147	2008-05-30	0.044000
148	2017-09-29	0.008000
149	2023-03-31	0.024000
150	2025-02-28	0.031000
151	2025-10-31	0.029000
152	2014-05-30	0.007000
153	2014-12-31	0.008000
154	2019-04-30	0.016000
155	2024-11-29	0.030000
156	2019-10-31	0.012000
157	2020-03-31	0.004000
158	2023-04-28	0.021000
159	2024-01-31	0.027000
160	2011-08-31	0.005000
161	2014-07-31	0.007000
162	2019-01-31	0.016000
163	2024-07-31	0.030000
164	2026-07-31	0.027000
165	2009-06-30	0.012000
166	2010-10-29	0.008000
167	2019-05-31	0.015000
168	2025-04-30	0.031000
169	2013-04-30	0.002000
170	2009-05-29	0.013000
171	2023-06-30	0.026000
172	2012-01-31	0.003000
173	2015-03-31	0.008000
174	2025-07-31	0.028000
175	2009-01-30	0.013000
176	2012-12-07	0.012000
177	2026-04-30	0.027000
178	2010-09-30	0.007000
179	2010-12-31	0.007000
180	2011-03-31	0.007000
181	2015-05-29	0.005000
182	2009-02-27	0.013000
183	2010-06-30	0.009000
184	2017-03-31	0.007000
185	2022-03-31	0.002000
186	2023-09-29	0.027000
187	2023-12-29	0.029000
188	2015-08-31	0.005000
189	2017-10-31	0.008000
190	2018-08-31	0.012000
191	2019-09-30	0.012000
192	2010-07-30	0.009000
193	2013-08-30	0.001000
194	2015-09-30	0.005000
195	2025-11-28	0.025000
196	2026-03-31	0.026000
197	2012-05-31	0.002000
198	2017-04-28	0.008000
199	2017-12-29	0.009000
200	2021-10-29	0.001000
201	2022-02-28	0.004000
202	2025-09-30	0.027000
203	2011-06-30	0.007000
204	2018-01-31	0.009000
205	2019-12-31	0.008000
206	2022-09-30	0.012000
207	2024-10-31	0.029000
208	2014-01-31	0.004000
209	2016-08-31	0.005000
210	2016-04-29	0.005000
211	2018-04-30	0.011000
212	2020-07-31	0.002000
213	2022-05-31	0.008000
214	2023-01-31	0.017000
215	2025-06-30	0.028000
216	2011-09-30	0.006000
217	2017-11-30	0.008000
218	2008-06-30	0.029000
219	2018-03-29	0.018000
220	2023-05-31	0.023000
221	2025-05-30	0.031000
222	2026-02-27	0.028000
223	2008-03-31	0.027000
224	2009-09-30	0.011000
225	2011-05-31	0.008000
226	2014-03-31	0.004000
227	2015-07-31	0.005000
228	2023-11-30	0.028000
229	2007-02-28	0.030000
230	2011-10-31	0.005000
231	2015-12-31	0.008000
232	2020-06-30	0.003000
233	2020-11-30	0.001000

4.5 KiB Raw Blame History

4.5 KiB

Raw Blame History