f/medhx-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	2010-06-30	0.065000
3	2012-02-29	0.065000
4	2019-12-31	0.056000
5	2023-02-28	0.054000
6	2011-05-31	0.064000
7	2013-12-31	0.060000
8	2020-07-31	0.051000
9	2024-11-29	0.064000
10	2006-10-31	0.072000
11	2010-10-29	0.060000
12	2011-11-30	0.066000
13	2012-09-28	0.065000
14	2017-11-30	0.059000
15	2016-12-30	0.056000
16	2017-07-31	0.058000
17	2006-06-30	0.065000
18	2007-05-31	0.076000
19	2009-02-27	0.066000
20	2009-12-31	0.106000
21	2010-09-30	0.061000
22	2011-04-29	0.064000
23	2025-10-31	0.059000
24	2014-01-31	0.059000
25	2017-02-28	0.054000
26	2023-09-29	0.056000
27	2014-04-30	0.060000
28	2017-03-31	0.054000
29	2019-07-31	0.060000
30	2022-06-30	0.051000
31	2026-07-31	0.063000
32	2025-02-28	0.064000
33	2026-05-29	0.059000
34	2008-02-29	0.073000
35	2009-10-30	0.074000
36	2015-03-31	0.058000
37	2016-06-30	0.061000
38	2020-02-28	0.055000
39	2022-11-30	0.053000
40	2009-06-30	0.067000
41	2014-08-29	0.060000
42	2020-10-30	0.052000
43	2008-08-29	0.073000
44	2009-03-31	0.066000
45	2012-10-31	0.065000
46	2015-01-30	0.057000
47	2013-01-31	0.066000
48	2018-12-31	0.058000
49	2008-11-28	0.143000
50	2013-11-29	0.061000
51	2018-11-30	0.058000
52	2022-10-31	0.053000
53	2009-11-30	0.074000
54	2010-07-30	0.063000
55	2023-08-31	0.055000
56	2006-07-31	0.065000
57	2017-08-31	0.059000
58	2018-04-30	0.056000
59	2021-04-30	0.049000
60	2024-04-30	0.068000
61	2009-07-31	0.067000
62	2015-08-31	0.059000
63	2017-10-31	0.059000
64	2023-05-31	0.054000
65	2010-03-31	0.069000
66	2019-01-31	0.059000
67	2008-03-31	0.073000
68	2016-11-30	0.061000
69	2007-12-31	0.074000
70	2015-02-27	0.054000
71	2020-05-29	0.054000
72	2007-02-28	0.076000
73	2011-08-31	0.066000
74	2014-03-31	0.060000
75	2016-10-31	0.061000
76	2020-04-30	0.054000
77	2011-12-30	0.082000
78	2025-06-30	0.013000
79	2008-10-31	0.073000
80	2010-01-29	0.070000
81	2011-02-28	0.064000
82	2024-09-30	0.074000
83	2019-09-30	0.058000
84	2023-01-31	0.055000
85	2016-03-31	0.055000
86	2017-09-29	0.061000
87	2018-06-29	0.057000
88	2021-11-30	0.051000
89	2023-11-30	0.073000
90	2007-04-30	0.076000
91	2008-06-30	0.073000
92	2016-05-31	0.059000
93	2015-04-30	0.058000
94	2017-06-30	0.058000
95	2026-02-27	0.059000
96	2012-05-31	0.065000
97	2014-06-30	0.060000
98	2016-01-29	0.055000
99	2019-10-31	0.056000
100	2024-02-29	0.065000
101	2024-05-31	0.070000
102	2026-03-31	0.059000
103	2008-01-31	0.074000
104	2008-09-30	0.073000
105	2010-05-28	0.067000
106	2014-07-31	0.059000
107	2019-05-31	0.060000
108	2012-08-31	0.065000
109	2021-01-29	0.050000
110	2014-10-31	0.060000
111	2018-09-28	0.056000
112	2026-01-30	0.059000
113	2021-09-30	0.049000
114	2022-01-31	0.050000
115	2022-07-29	0.052000
116	2007-10-31	0.074000
117	2023-03-31	0.054000
118	2006-09-29	0.068000
119	2008-05-30	0.073000
120	2012-01-31	0.066000
121	2019-11-29	0.056000
122	2008-07-31	0.073000
123	2013-02-28	0.066000
124	2013-06-28	0.064000
125	2019-03-29	0.057000
126	2020-03-31	0.054000
127	2022-02-28	0.049000
128	2009-05-29	0.067000
129	2009-08-31	0.070000
130	2014-05-30	0.060000
131	2018-07-31	0.055000
132	2009-09-30	0.074000
133	2015-09-30	0.057000
134	2023-12-29	0.086000
135	2008-04-30	0.073000
136	2022-12-30	0.235000
137	2011-09-30	0.066000
138	2017-12-29	0.058000
139	2021-03-31	0.050000
140	2021-05-28	0.049000
141	2009-04-30	0.066000
142	2012-11-30	0.065000
143	2013-10-31	0.061000
144	2016-07-29	0.062000
145	2021-12-31	0.104000
146	2024-06-28	0.073000
147	2025-05-30	0.062000
148	2016-09-30	0.064000
149	2017-05-31	0.056000
150	2022-05-31	0.051000
151	2022-09-30	0.052000
152	2023-04-28	0.054000
153	2024-01-31	0.065000
154	2006-08-31	0.065000
155	2011-10-31	0.066000
156	2018-10-31	0.056000
157	2026-06-30	0.061000
158	2013-08-30	0.061000
159	2015-06-30	0.060000
160	2015-11-30	0.055000
161	2017-01-31	0.054000
162	2018-01-31	0.058000
163	2025-09-30	0.059000
164	2007-08-31	0.074000
165	2018-02-28	0.057000
166	2019-02-28	0.059000
167	2020-12-31	0.063000
168	2007-07-31	0.074000
169	2012-03-30	0.065000
170	2014-12-31	0.057000
171	2015-05-29	0.059000
172	2021-06-30	0.047000
173	2021-08-31	0.048000
174	2006-12-29	0.079000
175	2007-11-30	0.074000
176	2008-12-31	0.072000
177	2013-12-10	0.068000
178	2021-10-29	0.049000
179	2009-01-30	0.066000
180	2011-07-29	0.066000
181	2015-12-31	0.055000
182	2025-01-31	0.063000
183	2023-06-30	0.054000
184	2006-11-30	0.102000
185	2010-08-31	0.061000
186	2016-08-31	0.065000
187	2018-03-29	0.056000
188	2025-12-31	0.059000
189	2026-04-30	0.059000
190	2017-04-28	0.054000
191	2024-03-28	0.068000
192	2013-04-30	0.065000
193	2014-09-30	0.059000
194	2024-07-31	0.076000
195	2025-07-31	0.057000
196	2006-05-31	0.064000
197	2025-08-29	0.057000
198	2011-03-31	0.064000
199	2013-05-31	0.064000
200	2013-07-31	0.064000
201	2018-08-31	0.055000
202	2022-04-29	0.050000
203	2025-03-31	0.064000
204	2007-01-31	0.076000
205	2010-02-26	0.070000
206	2011-01-31	0.062000
207	2014-02-28	0.060000
208	2021-02-26	0.050000
209	2021-07-30	0.047000
210	2007-09-28	0.074000
211	2014-11-28	0.058000
212	2018-05-31	0.057000
213	2019-04-30	0.058000
214	2019-06-28	0.056000
215	2010-04-30	0.069000
216	2020-11-30	0.051000
217	2022-08-31	0.052000
218	2024-08-30	0.075000
219	2024-10-31	0.071000
220	2010-12-31	0.060000
221	2015-07-31	0.060000
222	2025-11-28	0.059000
223	2007-06-29	0.074000
224	2013-09-30	0.060000
225	2015-10-30	0.055000
226	2016-02-29	0.055000
227	2020-06-30	0.052000
228	2023-07-31	0.054000
229	2012-07-31	0.064000
230	2023-10-31	0.057000
231	2012-12-31	0.083000
232	2013-03-28	0.065000
233	2019-08-30	0.060000
234	2020-01-31	0.056000
235	2020-08-31	0.051000
236	2024-12-31	0.063000
237	2007-03-30	0.076000
238	2011-06-30	0.066000
239	2012-06-29	0.066000
240	2012-12-11	0.107000
241	2020-09-30	0.052000
242	2010-11-30	0.060000
243	2012-04-30	0.065000
244	2016-04-29	0.057000
245	2022-03-31	0.049000
246	2025-04-30	0.064000

4.8 KiB Raw Blame History

4.8 KiB

Raw Blame History