f/cioyx-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

3.6 KiB

Raw Blame History

1	Date	Dividends
2	2024-12-31	0.044000
3	2025-11-28	0.045000
4	2014-12-31	0.040000
5	2015-07-31	0.040000
6	2015-11-30	0.111000
7	2016-01-29	0.042000
8	2024-04-30	0.041000
9	2024-08-30	0.043000
10	2015-03-31	0.039000
11	2019-02-28	0.041000
12	2020-03-31	0.037000
13	2023-01-31	0.042000
14	2025-01-31	0.044000
15	2021-12-02	0.297000
16	2025-03-31	0.044000
17	2022-10-31	0.039000
18	2024-02-29	0.043000
19	2011-10-31	0.052000
20	2013-03-28	0.047000
21	2013-10-31	0.046000
22	2017-01-31	0.039000
23	2019-04-30	0.042000
24	2022-01-31	0.032000
25	2025-02-28	0.044000
26	2016-11-30	0.038000
27	2017-12-29	0.040000
28	2020-04-30	0.034000
29	2022-04-29	0.032000
30	2022-08-31	0.038000
31	2023-12-29	0.049000
32	2016-08-31	0.040000
33	2018-01-31	0.040000
34	2021-03-31	0.044000
35	2021-04-30	0.045000
36	2012-07-31	0.048000
37	2015-06-30	0.040000
38	2017-07-31	0.041000
39	2026-05-29	0.045000
40	2012-11-30	0.048000
41	2014-05-30	0.042000
42	2015-05-29	0.040000
43	2018-09-28	0.039000
44	2021-06-30	0.044000
45	2024-06-28	0.042000
46	2018-05-31	0.039000
47	2020-11-30	0.040000
48	2012-04-30	0.047000
49	2013-01-31	0.048000
50	2013-11-29	0.048000
51	2014-02-28	0.044000
52	2014-03-31	0.044000
53	2017-06-30	0.040000
54	2020-07-31	0.034000
55	2021-10-29	0.035000
56	2024-03-28	0.040000
57	2022-02-28	0.032000
58	2022-06-30	0.034000
59	2014-08-29	0.039000
60	2016-07-29	0.040000
61	2016-10-31	0.039000
62	2017-05-31	0.041000
63	2020-06-30	0.033000
64	2021-02-26	0.043000
65	2023-06-30	0.038000
66	2024-01-31	0.043000
67	2019-03-29	0.042000
68	2023-05-31	0.038000
69	2025-12-31	0.047000
70	2015-04-30	0.039000
71	2015-10-30	0.041000
72	2020-01-31	0.039000
73	2020-09-30	0.036000
74	2021-11-30	0.034000
75	2022-03-31	0.032000
76	2022-05-31	0.033000
77	2024-10-31	0.043000
78	2012-12-31	0.048000
79	2016-05-31	0.041000
80	2017-02-28	0.040000
81	2019-09-30	0.042000
82	2019-10-31	0.042000
83	2021-01-29	0.043000
84	2025-08-29	0.045000
85	2026-02-27	0.047000
86	2015-02-27	0.040000
87	2015-09-30	0.041000
88	2015-12-31	0.041000
89	2017-08-31	0.040000
90	2019-05-31	0.042000
91	2021-12-31	0.033000
92	2013-05-31	0.043000
93	2023-03-31	0.039000
94	2023-11-30	0.043000
95	2025-07-31	0.044000
96	2013-04-30	0.041000
97	2019-01-31	0.040000
98	2022-09-30	0.038000
99	2023-07-31	0.038000
100	2026-07-31	0.045000
101	2012-03-30	0.046000
102	2018-04-30	0.039000
103	2025-09-30	0.045000
104	2022-12-30	0.042000
105	2023-02-28	0.040000
106	2011-12-30	0.052000
107	2012-10-31	0.047000
108	2016-04-29	0.041000
109	2017-04-28	0.041000
110	2017-11-30	0.040000
111	2022-11-30	0.041000
112	2011-08-31	0.052000
113	2014-04-30	0.043000
114	2016-02-29	0.042000
115	2019-08-30	0.042000
116	2020-02-28	0.038000
117	2012-02-29	0.046000
118	2014-09-30	0.039000
119	2014-10-31	0.041000
120	2016-03-31	0.042000
121	2018-10-31	0.039000
122	2023-08-31	0.040000
123	2025-06-30	0.044000
124	2012-09-28	0.047000
125	2013-06-28	0.043000
126	2014-06-30	0.042000
127	2014-07-31	0.041000
128	2016-06-30	0.040000
129	2020-05-29	0.034000
130	2026-01-30	0.047000
131	2012-06-29	0.048000
132	2013-07-31	0.043000
133	2013-12-31	0.048000
134	2014-12-02	0.031000
135	2016-12-30	0.039000
136	2026-03-31	0.045000
137	2012-05-31	0.047000
138	2018-02-28	0.039000
139	2018-07-31	0.039000
140	2018-08-31	0.039000
141	2020-12-31	0.042000
142	2021-07-30	0.042000
143	2019-11-29	0.041000
144	2019-12-31	0.040000
145	2011-11-30	0.246000
146	2012-01-31	0.053000
147	2013-02-28	0.046000
148	2017-10-31	0.040000
149	2018-06-29	0.039000
150	2019-07-31	0.042000
151	2023-10-31	0.040000
152	2026-04-30	0.046000
153	2013-09-30	0.045000
154	2015-08-31	0.041000
155	2020-08-31	0.036000
156	2021-05-28	0.042000
157	2024-05-31	0.041000
158	2025-05-30	0.043000
159	2018-03-29	0.039000
160	2025-10-31	0.046000
161	2017-03-31	0.041000
162	2018-12-31	0.040000
163	2019-06-28	0.042000
164	2020-10-30	0.038000
165	2023-09-29	0.041000
166	2014-11-28	0.041000
167	2016-09-30	0.039000
168	2017-09-29	0.040000
169	2018-11-30	0.039000
170	2021-09-30	0.036000
171	2023-04-28	0.038000
172	2025-04-30	0.044000
173	2012-08-31	0.048000
174	2013-08-30	0.044000
175	2014-01-31	0.045000
176	2021-08-31	0.038000
177	2022-07-29	0.035000
178	2024-07-31	0.042000
179	2011-09-30	0.052000
180	2015-01-30	0.040000
181	2024-09-30	0.044000
182	2024-11-29	0.043000
183	2026-06-30	0.045000

3.6 KiB Raw Blame History

3.6 KiB

Raw Blame History