f/acpsx-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

4.0 KiB

Raw Blame History

1	Date	Dividends
2	2023-09-29	0.035000
3	2017-04-28	0.024000
4	2017-05-31	0.026000
5	2019-04-30	0.033000
6	2015-05-29	0.034000
7	2016-06-30	0.028000
8	2025-04-30	0.035000
9	2011-01-31	0.020000
10	2012-05-31	0.038000
11	2014-11-28	0.034000
12	2020-05-29	0.026000
13	2022-02-28	0.019000
14	2022-09-30	0.027000
15	2024-07-31	0.036000
16	2025-05-30	0.035000
17	2012-03-30	0.038000
18	2016-08-31	0.026000
19	2020-01-31	0.027000
20	2025-02-28	0.035000
21	2026-01-30	0.033000
22	2010-10-29	0.020000
23	2011-12-09	0.019000
24	2019-01-31	0.033000
25	2017-08-31	0.026000
26	2021-11-30	0.019000
27	2026-02-27	0.032000
28	2026-04-30	0.033000
29	2011-04-29	0.023000
30	2016-03-31	0.029000
31	2022-10-31	0.027000
32	2018-10-31	0.031000
33	2019-10-31	0.027000
34	2021-02-26	0.017000
35	2023-03-31	0.034000
36	2023-04-28	0.034000
37	2009-12-11	0.075000
38	2011-06-30	0.023000
39	2014-03-31	0.040000
40	2024-12-31	0.035000
41	2025-06-30	0.035000
42	2024-01-31	0.035000
43	2025-08-29	0.032000
44	2012-07-31	0.035000
45	2018-09-28	0.031000
46	2021-06-30	0.017000
47	2020-10-30	0.020000
48	2023-08-31	0.034000
49	2011-10-31	0.038000
50	2016-04-29	0.028000
51	2019-03-29	0.033000
52	2010-12-31	0.051000
53	2012-11-30	0.028000
54	2013-02-28	0.028000
55	2018-12-31	0.032000
56	2021-04-30	0.017000
57	2010-01-29	0.029000
58	2010-08-31	0.031000
59	2010-12-03	0.151000
60	2025-11-28	0.032000
61	2021-05-28	0.017000
62	2023-07-31	0.034000
63	2024-05-31	0.035000
64	2017-10-31	0.026000
65	2019-09-30	0.029000
66	2019-11-29	0.027000
67	2022-06-30	0.023000
68	2023-05-31	0.034000
69	2013-06-28	0.028000
70	2015-07-31	0.029000
71	2016-09-30	0.025000
72	2014-01-31	0.038000
73	2015-02-27	0.034000
74	2016-05-31	0.028000
75	2015-11-30	0.029000
76	2018-08-31	0.031000
77	2019-06-28	0.031000
78	2021-12-31	0.019000
79	2022-08-31	0.027000
80	2012-10-31	0.030000
81	2013-03-28	0.028000
82	2013-09-30	0.028000
83	2023-12-29	0.036000
84	2024-02-29	0.036000
85	2010-09-30	0.022000
86	2022-07-29	0.025000
87	2023-11-30	0.035000
88	2013-08-30	0.028000
89	2015-04-30	0.034000
90	2015-10-30	0.029000
91	2016-11-30	0.025000
92	2017-03-31	0.026000
93	2009-12-31	0.100000
94	2011-12-30	0.038000
95	2012-06-29	0.038000
96	2020-06-30	0.026000
97	2020-12-31	0.020000
98	2022-03-31	0.019000
99	2016-02-29	0.029000
100	2018-01-31	0.026000
101	2019-02-28	0.033000
102	2009-08-31	0.051000
103	2011-09-30	0.038000
104	2012-08-31	0.030000
105	2023-02-28	0.033000
106	2011-05-31	0.023000
107	2011-11-30	0.038000
108	2012-12-31	0.028000
109	2025-10-31	0.034000
110	2025-12-31	0.034000
111	2012-09-28	0.030000
112	2013-05-31	0.028000
113	2023-01-31	0.031000
114	2021-10-29	0.019000
115	2023-10-31	0.035000
116	2024-11-29	0.035000
117	2014-10-31	0.034000
118	2016-01-29	0.029000
119	2021-09-30	0.019000
120	2013-11-29	0.037000
121	2015-12-31	0.029000
122	2017-02-28	0.026000
123	2018-11-30	0.032000
124	2010-06-30	0.035000
125	2011-08-31	0.038000
126	2012-04-30	0.038000
127	2020-11-30	0.020000
128	2025-03-31	0.035000
129	2012-01-31	0.038000
130	2012-02-29	0.038000
131	2015-08-31	0.029000
132	2019-07-31	0.031000
133	2020-12-11	0.360000
134	2024-09-30	0.035000
135	2010-11-30	0.020000
136	2014-02-28	0.040000
137	2016-10-31	0.025000
138	2022-01-31	0.019000
139	2022-12-30	0.059000
140	2024-04-30	0.035000
141	2026-07-31	0.033000
142	2010-07-30	0.031000
143	2017-01-31	0.025000
144	2019-08-30	0.029000
145	2019-05-31	0.031000
146	2019-12-31	0.027000
147	2020-03-31	0.026000
148	2010-05-28	0.037000
149	2013-10-31	0.028000
150	2014-12-31	0.034000
151	2013-12-31	0.056000
152	2017-07-31	0.026000
153	2020-04-30	0.026000
154	2014-06-30	0.036000
155	2015-01-30	0.034000
156	2015-06-30	0.029000
157	2015-09-30	0.029000
158	2016-12-13	0.015000
159	2010-02-26	0.025000
160	2013-07-31	0.028000
161	2014-05-30	0.040000
162	2017-06-30	0.026000
163	2017-12-29	0.027000
164	2018-06-29	0.030000
165	2021-01-29	0.017000
166	2010-03-31	0.025000
167	2011-03-31	0.020000
168	2011-07-29	0.038000
169	2018-02-28	0.027000
170	2022-04-29	0.019000
171	2026-06-30	0.033000
172	2013-04-30	0.028000
173	2014-04-30	0.040000
174	2016-07-29	0.028000
175	2018-07-31	0.031000
176	2020-02-28	0.026000
177	2023-06-30	0.034000
178	2024-06-28	0.036000
179	2025-09-30	0.034000
180	2014-07-31	0.036000
181	2014-09-30	0.034000
182	2017-09-29	0.026000
183	2020-08-31	0.026000
184	2021-07-30	0.017000
185	2024-10-31	0.035000
186	2011-02-28	0.020000
187	2015-03-31	0.034000
188	2020-07-31	0.026000
189	2018-04-30	0.027000
190	2018-05-31	0.030000
191	2021-03-31	0.017000
192	2021-12-14	0.110000
193	2022-05-31	0.019000
194	2013-01-31	0.028000
195	2017-11-30	0.026000
196	2018-03-29	0.028000
197	2022-11-30	0.033000
198	2025-01-31	0.035000
199	2026-03-31	0.033000
200	2024-03-28	0.035000
201	2024-08-30	0.035000
202	2026-05-29	0.033000
203	2014-08-29	0.034000
204	2020-09-30	0.023000
205	2021-08-31	0.017000

4.0 KiB Raw Blame History

4.0 KiB

Raw Blame History