f/cbfyx-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

3.9 KiB

Raw Blame History

1	Date	Dividends
2	2012-05-31	0.100000
3	2012-10-31	0.096000
4	2016-04-29	0.068000
5	2016-07-29	0.068000
6	2017-04-28	0.044000
7	2019-10-31	0.088000
8	2020-08-31	0.296000
9	2022-02-28	0.048000
10	2015-06-30	0.068000
11	2021-10-29	0.051000
12	2021-11-30	0.049000
13	2022-07-29	0.066000
14	2023-12-29	0.114000
15	2012-04-30	0.100000
16	2014-03-31	0.064000
17	2014-11-28	0.068000
18	2014-12-31	0.064000
19	2021-07-30	0.051000
20	2022-01-31	0.053000
21	2023-05-31	0.100000
22	2023-08-31	0.114000
23	2010-09-30	0.100000
24	2011-10-31	0.096000
25	2013-01-31	0.076000
26	2013-03-28	0.076000
27	2013-11-29	0.072000
28	2014-02-28	0.064000
29	2017-08-31	0.068000
30	2017-10-31	0.068000
31	2017-12-29	0.072000
32	2020-04-30	0.076000
33	2023-01-31	0.093000
34	2024-10-31	0.110000
35	2010-07-30	0.112000
36	2013-05-31	0.072000
37	2013-12-03	1.152000
38	2010-02-26	0.112000
39	2015-02-27	0.056000
40	2018-05-31	0.076000
41	2019-04-30	0.096000
42	2023-11-30	0.113000
43	2025-05-30	0.107000
44	2011-08-31	0.108000
45	2015-08-31	0.060000
46	2016-08-31	0.064000
47	2016-10-31	0.064000
48	2017-06-30	0.048000
49	2019-01-31	0.092000
50	2009-10-30	0.116000
51	2015-11-30	0.912000
52	2018-11-30	0.088000
53	2019-12-31	0.084000
54	2020-12-31	0.073000
55	2021-12-31	0.056000
56	2022-06-30	0.057000
57	2010-08-31	0.108000
58	2011-04-29	0.112000
59	2012-11-30	0.940000
60	2013-09-30	0.072000
61	2018-02-28	0.068000
62	2024-05-31	0.107000
63	2025-04-30	0.102000
64	2010-11-30	0.100000
65	2011-03-31	0.104000
66	2014-06-30	0.064000
67	2015-04-30	0.064000
68	2016-03-31	0.072000
69	2018-12-31	0.116000
70	2022-04-29	0.051000
71	2022-10-31	0.097000
72	2025-08-29	0.109000
73	2009-11-30	0.112000
74	2010-03-31	0.116000
75	2010-05-28	0.116000
76	2015-03-31	0.060000
77	2015-09-30	0.068000
78	2019-08-30	0.088000
79	2024-08-30	0.111000
80	2012-01-31	0.096000
81	2012-06-29	0.416000
82	2017-07-31	0.044000
83	2017-11-30	0.116000
84	2021-08-31	0.049000
85	2023-07-31	0.110000
86	2024-02-29	0.108000
87	2012-02-29	0.088000
88	2013-12-31	0.068000
89	2014-01-31	0.076000
90	2016-06-30	0.068000
91	2017-09-29	0.068000
92	2019-06-28	0.092000
93	2015-05-29	0.064000
94	2010-10-29	0.100000
95	2011-06-30	0.280000
96	2015-10-30	0.064000
97	2019-05-31	0.092000
98	2023-09-29	0.113000
99	2024-07-31	0.112000
100	2012-07-31	0.104000
101	2014-10-31	0.068000
102	2017-03-31	0.068000
103	2021-05-28	0.055000
104	2022-09-30	0.089000
105	2013-06-28	0.068000
106	2019-02-28	0.088000
107	2019-11-29	0.084000
108	2020-06-30	0.080000
109	2020-09-30	0.073000
110	2021-03-31	0.059000
111	2021-06-30	0.054000
112	2023-04-28	0.092000
113	2024-06-28	0.109000
114	2025-10-31	0.114000
115	2022-12-30	0.127000
116	2023-02-28	0.092000
117	2013-10-31	0.076000
118	2018-04-30	0.072000
119	2018-06-29	0.072000
120	2018-10-31	0.084000
121	2021-04-30	0.054000
122	2022-03-31	0.050000
123	2024-04-30	0.108000
124	2013-02-28	0.068000
125	2013-07-31	0.064000
126	2020-07-31	0.076000
127	2025-07-31	0.110000
128	2014-07-31	0.060000
129	2018-03-29	0.072000
130	2020-02-28	0.080000
131	2021-01-29	0.070000
132	2012-09-28	0.092000
133	2014-12-02	0.456000
134	2019-12-02	0.444000
135	2020-01-31	0.084000
136	2024-12-31	0.115000
137	2016-05-31	0.068000
138	2022-05-31	0.051000
139	2024-09-30	0.110000
140	2010-06-30	0.112000
141	2010-12-02	0.516000
142	2012-03-30	0.112000
143	2013-08-30	0.068000
144	2014-05-30	0.064000
145	2019-09-30	0.088000
146	2020-12-01	0.862000
147	2021-02-26	0.064000
148	2017-01-31	0.064000
149	2025-03-31	0.103000
150	2010-06-21	0.240000
151	2013-04-30	0.076000
152	2014-09-30	0.068000
153	2016-12-30	0.076000
154	2018-09-28	0.080000
155	2023-06-30	0.105000
156	2025-11-28	0.111000
157	2011-01-31	0.112000
158	2011-07-29	0.112000
159	2011-11-30	0.420000
160	2015-12-31	0.260000
161	2016-01-29	0.064000
162	2018-08-31	0.076000
163	2020-05-29	0.080000
164	2022-11-30	0.105000
165	2024-03-28	0.104000
166	2025-01-31	0.110000
167	2025-06-30	0.109000
168	2014-04-30	0.068000
169	2015-01-30	0.064000
170	2016-09-30	0.060000
171	2018-01-31	0.068000
172	2022-08-31	0.077000
173	2023-03-31	0.090000
174	2024-11-29	0.115000
175	2010-01-29	0.112000
176	2011-02-28	0.108000
177	2011-12-30	0.100000
178	2012-12-31	0.084000
179	2017-02-28	0.064000
180	2018-07-31	0.076000
181	2019-03-29	0.096000
182	2023-10-31	0.120000
183	2024-01-31	0.112000
184	2015-07-31	0.064000
185	2016-02-29	0.064000
186	2016-11-30	0.884000
187	2019-07-31	0.092000
188	2020-10-30	0.071000
189	2020-11-30	0.076000
190	2021-09-30	0.049000
191	2025-09-30	0.109000
192	2011-05-31	0.120000
193	2012-08-31	0.096000
194	2020-03-31	0.080000
195	2025-02-28	0.102000
196	2010-12-31	0.108000
197	2011-09-30	0.104000
198	2014-08-29	0.060000
199	2017-05-31	0.036000

3.9 KiB Raw Blame History

3.9 KiB

Raw Blame History