f/ancfx-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	2022-12-16	1.287000
3	2023-06-14	0.821000
4	1981-05-29	0.090000
5	1985-02-19	0.100000
6	1993-02-19	0.150000
7	1995-05-12	0.100000
8	1998-05-22	0.100000
9	2020-09-16	0.170000
10	2021-12-17	5.704000
11	2026-03-18	0.170000
12	1983-02-25	0.140000
13	1983-05-27	0.100000
14	1990-05-25	0.100000
15	1996-05-17	0.100000
16	2003-05-16	0.100000
17	2008-12-16	0.220000
18	2013-09-12	0.125000
19	2001-12-14	0.100000
20	2021-06-16	2.290000
21	2021-09-15	0.170000
22	1980-05-30	0.090000
23	1985-11-15	0.100000
24	1996-08-16	0.100000
25	2001-05-18	0.100000
26	2005-12-28	0.290000
27	2008-05-23	0.120000
28	2010-09-15	0.120000
29	2025-12-17	5.445000
30	1994-05-20	0.100000
31	1997-08-15	0.100000
32	1998-12-23	2.580000
33	2003-08-15	0.100000
34	1987-08-19	0.100000
35	1992-11-20	1.260000
36	2005-08-19	0.100000
37	2004-02-20	0.100000
38	2015-06-17	0.150000
39	2017-12-20	3.698000
40	1988-08-12	0.100000
41	1992-02-21	0.200000
42	1993-11-19	2.110000
43	1996-02-23	0.310000
44	2022-06-15	1.374000
45	2022-09-14	0.170000
46	1985-05-21	0.100000
47	1995-02-17	0.300000
48	1999-02-19	0.700000
49	2010-06-09	0.120000
50	2011-03-04	0.120000
51	2015-12-22	2.022000
52	2020-03-18	0.170000
53	2023-03-15	0.170000
54	1982-05-28	0.100000
55	2000-08-18	0.100000
56	2000-12-15	1.945000
57	2007-02-16	0.182000
58	2024-09-18	0.170000
59	1986-02-18	0.100000
60	2009-05-26	0.120000
61	2015-03-13	0.762000
62	2016-12-21	1.701000
63	2014-09-17	0.145000
64	2018-09-14	0.165000
65	2025-03-12	0.170000
66	1986-05-19	0.100000
67	1989-08-18	0.100000
68	1993-08-13	0.100000
69	2002-08-16	0.100000
70	2021-03-17	0.170000
71	2024-12-18	6.173000
72	1982-11-26	0.100000
73	1984-02-10	0.100000
74	1993-05-21	0.100000
75	2012-12-19	0.275000
76	1998-08-14	0.100000
77	1999-12-16	2.285000
78	2006-05-26	0.110000
79	2007-12-24	2.600000
80	2014-06-12	0.135000
81	1984-11-19	0.100000
82	1999-08-13	0.100000
83	2007-05-18	0.120000
84	2009-02-20	0.120000
85	2019-12-20	3.491000
86	1990-11-16	0.190000
87	1995-12-01	0.580000
88	2003-02-21	0.100000
89	2014-12-22	3.614000
90	1980-02-29	0.090000
91	1989-02-10	0.100000
92	1990-08-17	0.100000
93	2002-05-15	0.100000
94	2003-12-12	0.100000
95	2014-03-14	0.630000
96	1980-11-28	0.140000
97	1983-08-26	0.100000
98	1995-08-11	0.100000
99	1999-05-21	0.100000
100	2004-12-10	0.260000
101	2011-09-14	0.125000
102	2012-03-16	0.125000
103	2026-06-16	1.737000
104	1983-11-25	0.100000
105	1986-08-15	0.100000
106	1988-11-18	0.170000
107	2002-02-22	0.100000
108	2006-08-18	0.120000
109	2008-08-15	0.120000
110	2012-09-12	0.125000
111	2023-12-15	2.985000
112	1988-05-20	0.100000
113	1989-11-17	0.320000
114	1992-08-21	0.100000
115	2004-08-13	0.100000
116	2024-06-12	0.668000
117	2005-02-18	0.100000
118	2005-05-27	0.100000
119	2010-03-05	0.120000
120	2018-12-21	4.722000
121	2013-03-15	0.125000
122	2019-06-14	0.727000
123	2020-06-17	0.950000
124	1990-02-16	0.100000
125	1991-11-29	0.660000
126	2006-02-17	0.110000
127	2012-06-13	0.125000
128	2018-06-15	0.692000
129	2024-03-13	0.170000
130	1982-02-26	0.170000
131	1987-11-20	0.100000
132	2004-05-21	0.100000
133	2011-12-15	0.250000
134	2002-12-13	0.195000
135	2017-06-14	0.799000
136	2013-12-18	1.190000
137	2020-12-18	0.515000
138	1986-11-21	0.100000
139	1987-02-13	0.100000
140	1991-02-15	0.100000
141	1997-05-23	0.100000
142	1981-11-27	0.150000
143	1987-05-22	0.100000
144	1994-11-18	0.510000
145	2019-09-13	0.170000
146	2016-09-16	0.155000
147	1984-05-22	0.100000
148	1991-05-24	0.100000
149	2007-08-17	0.120000
150	2008-02-15	0.382000
151	1982-08-27	0.100000
152	1998-02-13	0.210000
153	2001-08-17	0.100000
154	2006-12-27	1.790000
155	1981-08-28	0.100000
156	2010-12-15	0.210000
157	2019-03-15	0.165000
158	2023-09-13	0.170000
159	1992-05-22	0.100000
160	1994-02-18	0.180000
161	2011-06-08	0.120000
162	2025-09-17	0.170000
163	2000-05-19	0.100000
164	2001-02-23	0.475000
165	2009-08-14	0.120000
166	2016-06-15	0.560000
167	1981-02-27	0.090000
168	1985-08-19	0.100000
169	1997-02-21	0.450000
170	1997-11-28	2.900000
171	2018-03-16	0.160000
172	1994-08-12	0.100000
173	2000-02-18	0.610000
174	2013-06-12	0.125000
175	2016-03-16	0.150000
176	1980-08-29	0.090000
177	1988-02-12	0.100000
178	1989-05-26	0.100000
179	1991-08-16	0.100000
180	2017-03-15	0.155000
181	2017-09-15	0.160000
182	2022-03-16	0.170000
183	2025-06-11	2.062000
184	1984-08-20	0.100000
185	1996-11-29	1.650000
186	2009-12-15	0.120000
187	2015-09-16	0.150000

3.6 KiB Raw Blame History

3.6 KiB

Raw Blame History