f/mo-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	1976-12-09	0.006771
3	1999-03-11	0.440000
4	2024-12-26	1.020000
5	1986-06-10	0.047917
6	1991-09-10	0.175000
7	2005-12-23	0.800000
8	2007-12-21	0.750000
9	1989-03-09	0.093750
10	2019-06-13	0.800000
11	2020-06-12	0.840000
12	2021-06-14	0.860000
13	1974-06-11	0.004167
14	1985-06-10	0.041667
15	1992-06-09	0.175000
16	1998-06-11	0.400000
17	2014-03-12	0.480000
18	2018-06-14	0.700000
19	2026-03-25	1.060000
20	1976-09-07	0.006771
21	2006-06-13	0.800000
22	2008-09-11	0.320000
23	1973-03-01	0.003375
24	1973-12-10	0.003646
25	2001-09-17	0.580000
26	2009-06-11	0.320000
27	1984-06-11	0.035417
28	2008-03-17	0.750000
29	2009-12-28	0.340000
30	2010-06-11	0.350000
31	2016-09-13	0.610000
32	1988-06-09	0.075000
33	2002-09-12	0.640000
34	2010-09-13	0.380000
35	1983-12-09	0.030208
36	1990-03-09	0.114667
37	1977-09-09	0.008583
38	2001-12-20	0.580000
39	2003-09-11	0.680000
40	2009-09-11	0.340000
41	2019-09-13	0.840000
42	2023-06-14	0.940000
43	1996-09-12	0.400000
44	2000-06-16	0.480000
45	2021-03-24	0.860000
46	1977-03-10	0.006771
47	1982-03-04	0.025000
48	1994-12-09	0.275000
49	2006-03-13	0.800000
50	2023-09-14	0.980000
51	2020-09-14	0.860000
52	1978-03-09	0.010667
53	1997-06-12	0.400000
54	1985-09-10	0.041667
55	2002-03-13	0.580000
56	2014-12-22	0.520000
57	2024-09-16	1.020000
58	2010-12-23	0.380000
59	2012-09-12	0.440000
60	2013-06-12	0.440000
61	1995-12-13	0.333333
62	1998-03-12	0.400000
63	1998-09-11	0.440000
64	1971-09-10	0.003125
65	1989-06-09	0.093750
66	2004-09-13	0.730000
67	2016-03-11	0.565000
68	2016-12-20	0.610000
69	1980-09-09	0.016667
70	1986-03-10	0.047917
71	2003-06-11	0.640000
72	2006-09-13	0.860000
73	2009-03-12	0.320000
74	2013-09-12	0.480000
75	1975-12-09	0.005208
76	1979-12-10	0.013000
77	2008-06-11	0.290000
78	2017-06-13	0.610000
79	2005-06-13	0.730000
80	2012-06-13	0.410000
81	2020-03-24	0.840000
82	1977-06-10	0.008583
83	1982-06-09	0.025000
84	1993-12-09	0.216667
85	2003-12-18	0.680000
86	1980-06-10	0.016667
87	1986-09-09	0.047917
88	2018-12-24	0.800000
89	1980-03-06	0.016667
90	1981-09-09	0.020833
91	1982-12-09	0.025000
92	1984-12-10	0.035417
93	2015-09-11	0.565000
94	2017-09-14	0.660000
95	1978-06-12	0.010667
96	1983-09-09	0.030208
97	1984-09-10	0.035417
98	2005-03-11	0.730000
99	2011-06-13	0.380000
100	1997-12-11	0.400000
101	2000-12-13	0.530000
102	2001-03-13	0.530000
103	2018-03-14	0.700000
104	2007-04-02	21.909000
105	1972-03-07	0.003229
106	1972-06-12	0.003229
107	1973-06-11	0.003375
108	1979-06-11	0.013000
109	1994-09-09	0.275000
110	2000-09-13	0.530000
111	1973-09-10	0.003646
112	1974-12-09	0.004167
113	1991-06-11	0.143333
114	2001-06-13	0.530000
115	2026-06-15	1.060000
116	1988-12-09	0.093750
117	1970-09-11	0.002604
118	2005-09-13	0.800000
119	2014-06-12	0.480000
120	1975-03-11	0.004688
121	1976-06-08	0.005208
122	1999-09-13	0.480000
123	2019-03-22	0.800000
124	1971-03-09	0.003125
125	1981-12-09	0.020833
126	1986-12-09	0.062500
127	1990-06-11	0.114667
128	1992-09-09	0.216667
129	2015-03-12	0.520000
130	1991-12-10	0.175000
131	2019-12-24	0.840000
132	2022-12-21	0.940000
133	2025-12-26	1.060000
134	1993-06-09	0.216667
135	1999-06-11	0.440000
136	2007-06-13	0.690000
137	2012-03-13	0.410000
138	1971-06-11	0.003125
139	1983-06-09	0.030208
140	2007-03-13	0.860000
141	2025-03-25	1.020000
142	1979-03-09	0.013021
143	1979-09-11	0.013000
144	1981-03-03	0.020833
145	1997-03-13	0.400000
146	1970-12-11	0.003125
147	1974-09-09	0.004167
148	1985-03-11	0.041667
149	1990-09-10	0.143333
150	1974-03-05	0.003646
151	1983-03-03	0.030208
152	1999-12-13	0.480000
153	1987-09-09	0.062500
154	1989-09-11	0.114583
155	1994-06-09	0.230000
156	2016-06-13	0.565000
157	2022-06-14	0.900000
158	1972-12-11	0.003375
159	1988-03-08	0.075000
160	1992-03-06	0.175000
161	2002-06-26	0.580000
162	2008-12-22	0.320000
163	2025-06-16	1.020000
164	1976-03-11	0.005208
165	2000-03-16	0.480000
166	2010-03-11	0.350000
167	2022-09-14	0.940000
168	2023-03-23	0.940000
169	2024-06-14	0.980000
170	1991-03-08	0.143333
171	1977-12-09	0.008583
172	1993-09-09	0.216667
173	1995-06-13	0.275000
174	2003-03-12	0.640000
175	2018-09-13	0.800000
176	1997-09-11	0.400000
177	2013-03-13	0.440000
178	1985-12-10	0.041667
179	1996-06-12	0.333333
180	2012-12-21	0.440000
181	2017-12-20	0.660000
182	2022-03-24	0.900000
183	1982-09-09	0.025000
184	1984-03-09	0.035417
185	1995-03-09	0.091667
186	2002-12-19	0.640000
187	2013-12-23	0.480000
188	2015-12-22	0.565000
189	1971-12-13	0.003229
190	1972-09-11	0.003313
191	2004-03-11	0.680000
192	2011-03-11	0.380000
193	2015-06-11	0.520000
194	2021-12-22	0.900000
195	1980-12-09	0.016667
196	1998-12-11	0.440000
197	2011-09-13	0.410000
198	2020-12-24	0.860000
199	2024-03-22	0.980000
200	2025-09-15	1.060000
201	1994-03-09	0.230000
202	1996-12-12	0.400000
203	2006-12-22	0.860000
204	2004-12-22	0.730000
205	2011-12-22	0.410000
206	1988-09-09	0.093750
207	1993-03-05	0.216667
208	1978-12-11	0.010667
209	1987-03-09	0.062500
210	1989-12-11	0.114667
211	1992-12-09	0.216667
212	1995-09-13	0.333333
213	2004-06-14	0.680000
214	2008-03-31	51.060000
215	1975-06-09	0.004688
216	1987-12-09	0.075000
217	2021-09-14	0.900000
218	2023-12-20	0.980000
219	1990-12-11	0.143333
220	2017-03-13	0.610000
221	2007-09-12	0.750000
222	2014-09-11	0.520000
223	1970-06-10	0.002604
224	1975-09-08	0.004688
225	1978-09-11	0.010667
226	1981-06-09	0.020833
227	1987-06-09	0.062500
228	1996-03-13	0.333333

4.5 KiB Raw Blame History

4.5 KiB

Raw Blame History