f/acgix-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

4.1 KiB

Raw Blame History

1	Date	Dividends
2	2012-06-14	0.063000
3	1989-12-15	0.063000
4	2006-03-15	0.387000
5	2022-03-24	0.073000
6	1991-12-16	0.110000
7	2017-12-13	2.808000
8	2025-03-27	0.069000
9	2026-06-25	0.069000
10	1983-09-15	0.120000
11	1986-09-15	0.070000
12	2000-12-13	2.177000
13	2021-03-25	0.070000
14	2023-06-22	0.090000
15	2024-09-26	0.068000
16	1992-03-16	0.090000
17	1995-09-15	0.068000
18	2013-06-20	0.068000
19	2017-09-14	0.085000
20	2026-03-26	0.069000
21	1990-12-14	0.090000
22	2016-06-16	0.085000
23	2016-12-13	1.620000
24	1976-03-04	0.020000
25	1977-03-03	0.125000
26	1987-06-15	0.055000
27	1999-12-13	2.676000
28	2008-06-11	0.092000
29	1981-09-15	0.120000
30	1983-06-15	0.120000
31	1991-06-14	0.090000
32	2023-12-13	2.467000
33	1981-06-15	0.120000
34	1993-09-15	0.068000
35	2005-06-15	0.068000
36	2010-06-09	0.052000
37	2016-09-15	0.085000
38	1980-09-15	0.080000
39	1991-09-16	0.090000
40	2010-12-03	0.048000
41	2023-03-23	0.090000
42	1978-09-07	0.040000
43	1994-06-15	0.068000
44	1994-09-15	0.068000
45	2006-09-13	0.086000
46	2002-09-18	0.038000
47	2008-12-10	0.075000
48	2018-12-14	2.723000
49	1983-12-15	0.120000
50	1992-06-15	0.090000
51	1997-12-22	2.303000
52	2012-03-15	0.063000
53	2000-03-22	0.048000
54	2000-09-20	0.048000
55	1982-06-15	0.120000
56	1999-03-22	0.048000
57	2011-06-16	0.059000
58	1989-09-15	0.055000
59	1991-03-15	0.090000
60	1996-12-16	1.153000
61	2004-12-08	0.167000
62	2007-06-13	0.110000
63	1982-03-15	0.415000
64	1999-06-21	0.048000
65	2008-03-12	0.100000
66	2010-09-16	0.047000
67	2004-09-15	0.058000
68	1981-03-13	0.325000
69	1983-03-15	0.120000
70	1986-03-14	0.120000
71	1987-09-15	0.055000
72	2015-03-19	0.069000
73	1979-03-15	0.165000
74	1990-09-14	0.090000
75	2011-12-09	0.082000
76	2002-06-19	0.051000
77	2004-06-16	0.058000
78	2022-12-14	2.235000
79	2001-06-20	0.048000
80	2003-12-10	0.043000
81	1996-06-14	0.058000
82	1985-12-13	0.120000
83	1993-12-15	0.068000
84	2011-09-15	0.059000
85	1980-12-15	0.080000
86	2024-03-28	0.070000
87	1992-12-15	0.080000
88	2001-12-12	0.424000
89	2015-06-18	0.069000
90	2014-09-18	0.068000
91	1999-09-20	0.048000
92	1995-12-15	0.068000
93	2012-12-07	0.135000
94	2021-09-23	0.070000
95	1988-09-15	0.055000
96	1997-06-23	0.058000
97	2015-12-11	1.890000
98	1996-09-16	0.058000
99	2007-09-12	0.110000
100	2007-12-11	1.054000
101	2021-12-14	4.867000
102	1987-12-15	0.055000
103	1996-03-15	0.068000
104	2003-09-17	0.043000
105	2005-03-16	0.173000
106	1977-12-01	0.040000
107	2001-03-21	0.048000
108	2023-09-28	0.089000
109	1978-03-10	0.160000
110	1992-09-15	0.080000
111	2007-03-14	0.134000
112	2017-03-16	0.085000
113	1995-03-15	0.068000
114	2002-03-20	0.120000
115	2009-12-09	0.052000
116	2013-09-19	0.068000
117	1978-06-01	0.040000
118	1984-06-15	0.120000
119	1986-12-15	0.055000
120	1994-03-15	0.068000
121	2014-06-19	0.068000
122	1974-12-05	0.020000
123	1976-09-02	0.030000
124	1978-12-07	0.050000
125	2018-06-21	0.101000
126	2008-09-10	0.075000
127	2010-03-10	0.075000
128	2011-03-17	0.048000
129	1979-09-14	0.050000
130	1988-12-15	0.055000
131	2001-09-19	0.055000
132	2000-06-21	0.048000
133	2020-06-18	0.104000
134	1993-03-15	0.068000
135	2006-06-14	0.080000
136	2013-03-21	0.068000
137	2015-09-17	0.084000
138	2004-03-17	0.058000
139	2006-12-13	1.116000
140	2019-03-21	0.101000
141	2020-09-17	0.104000
142	1979-11-20	0.240000
143	1998-03-23	0.058000
144	2009-09-09	0.042000
145	2018-09-13	0.101000
146	2022-09-22	0.098000
147	2020-03-19	0.102000
148	1980-06-13	0.050000
149	1988-06-15	0.055000
150	2022-06-23	0.078000
151	1976-06-30	0.020000
152	1985-06-14	0.120000
153	1987-03-16	0.053000
154	1988-03-15	0.055000
155	2012-09-20	0.068000
156	2020-12-11	0.595000
157	1981-12-15	0.120000
158	1990-03-15	0.070000
159	1977-06-02	0.030000
160	1997-03-14	0.062000
161	1997-09-22	0.058000
162	1998-09-30	0.058000
163	2024-12-12	2.072000
164	2025-12-11	1.695000
165	2013-12-13	0.743000
166	2002-12-11	0.038000
167	1974-01-31	0.190000
168	1975-09-04	0.020000
169	2005-12-14	1.331000
170	2009-03-11	0.065000
171	2021-06-24	0.070000
172	1974-09-05	0.020000
173	1982-12-15	0.120000
174	2019-12-13	1.746000
175	1984-03-15	0.120000
176	1989-03-15	0.055000
177	2014-03-20	0.068000
178	1975-03-20	0.020000
179	1985-09-13	0.120000
180	2019-06-20	0.101000
181	2025-09-25	0.068000
182	1975-01-31	0.110000
183	1977-09-01	0.030000
184	1984-12-14	0.220000
185	1985-03-15	0.120000
186	1980-03-14	0.050000
187	1998-12-09	1.136000
188	2009-06-30	0.065000
189	2019-09-19	0.101000
190	2014-12-12	2.917000
191	1995-06-15	0.068000
192	2005-09-14	0.068000
193	2025-06-26	0.069000
194	2016-03-17	0.085000
195	2024-06-27	0.070000
196	1986-06-13	0.075000
197	1993-06-15	0.068000
198	1998-06-22	0.058000
199	1974-06-06	0.020000
200	1976-02-02	0.075000
201	1994-12-15	0.090000
202	1975-12-04	0.020000
203	1979-06-15	0.050000
204	1982-09-15	0.120000
205	1984-09-14	0.120000
206	1990-06-15	0.090000
207	1975-06-05	0.020000
208	1976-12-02	0.030000
209	1989-06-15	0.055000
210	2017-06-15	0.085000
211	2018-03-22	0.085000

4.1 KiB Raw Blame History

4.1 KiB

Raw Blame History