f/dow-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

6.9 KiB

Raw Blame History

1	Date	Dividends	ctime
2	1987-09-24	0.12222	2017-08-22 22:17:53
3	2004-09-28	0.335	2017-08-22 22:17:53
4	1991-03-22	0.21667	2017-08-22 22:17:53
5	2017-03-29	0.46	2017-08-22 22:17:53
6	2008-09-26	0.42	2017-08-22 22:17:53
7	1982-12-27	0.1	2017-08-22 22:17:53
8	1991-09-24	0.21667	2017-08-22 22:17:53
9	2017-06-28	0.46	2017-08-22 22:17:53
10	1975-03-24	0.03889	2017-08-22 22:17:53
11	1979-06-25	0.07778	2017-08-22 22:17:53
12	1983-03-28	0.1	2017-08-22 22:17:53
13	1983-09-26	0.1	2017-08-22 22:17:53
14	1994-12-23	0.21667	2017-08-22 22:17:53
15	1996-09-26	0.25	2017-08-22 22:17:53
16	2013-06-26	0.32	2017-08-22 22:17:53
17	2011-12-28	0.25	2017-08-22 22:17:53
18	1973-12-24	0.02778	2017-08-22 22:17:53
19	1979-09-24	0.08889	2017-08-22 22:17:53
20	2009-03-27	0.15	2017-08-22 22:17:53
21	1978-03-27	0.06667	2017-08-22 22:17:53
22	1992-09-24	0.21667	2017-08-22 22:17:53
23	2005-06-28	0.335	2017-08-22 22:17:53
24	2009-06-26	0.15	2017-08-22 22:17:53
25	1975-09-24	0.04444	2017-08-22 22:17:53
26	1982-06-24	0.1	2017-08-22 22:17:53
27	2005-03-29	0.335	2017-08-22 22:17:53
28	2007-09-26	0.42	2017-08-22 22:17:53
29	1986-06-24	0.1	2017-08-22 22:17:53
30	1999-09-28	0.29	2017-08-22 22:17:53
31	2012-03-28	0.25	2017-08-22 22:17:53
32	1974-03-25	0.02778	2017-08-22 22:17:53
33	1979-12-24	0.08889	2017-08-22 22:17:53
34	2003-09-26	0.335	2017-08-22 22:17:53
35	1978-06-26	0.06667	2017-08-22 22:17:53
36	1984-03-26	0.1	2017-08-22 22:17:53
37	2012-06-27	0.32	2017-08-22 22:17:53
38	2016-09-28	0.46	2017-08-22 22:17:53
39	1974-06-24	0.03333	2017-08-22 22:17:53
40	1978-09-25	0.07778	2017-08-22 22:17:53
41	1979-03-26	0.07778	2017-08-22 22:17:53
42	1987-12-24	0.12222	2017-08-22 22:17:53
43	2012-09-26	0.32	2017-08-22 22:17:53
44	2012-12-20	0.32	2017-08-22 22:17:53
45	1991-12-24	0.21667	2017-08-22 22:17:53
46	2001-12-27	0.335	2017-08-22 22:17:53
47	1984-12-24	0.1	2017-08-22 22:17:53
48	1989-03-27	0.17778	2017-08-22 22:17:53
49	1989-09-25	0.21667	2017-08-22 22:17:53
50	2002-03-26	0.335	2017-08-22 22:17:53
51	1977-06-24	0.06667	2017-08-22 22:17:53
52	2011-03-29	0.15	2017-08-22 22:17:53
53	2002-09-26	0.335	2017-08-22 22:17:53
54	2015-03-27	0.42	2017-08-22 22:17:53
55	1980-12-24	0.1	2017-08-22 22:17:53
56	1981-06-24	0.1	2017-08-22 22:17:53
57	1997-12-29	0.29	2017-08-22 22:17:53
58	1992-12-24	0.21667	2017-08-22 22:17:53
59	2011-06-28	0.25	2017-08-22 22:17:53
60	2009-12-29	0.15	2017-08-22 22:17:53
61	2013-12-27	0.32	2017-08-22 22:17:53
62	2015-06-26	0.42	2017-08-22 22:17:53
63	1975-12-24	0.04444	2017-08-22 22:17:53
64	1998-09-28	0.29	2017-08-22 22:17:53
65	1993-03-25	0.21667	2017-08-22 22:17:53
66	1990-06-25	0.21667	2017-08-22 22:17:53
67	1994-09-26	0.21667	2017-08-22 22:17:53
68	1984-06-25	0.1	2017-08-22 22:17:53
69	1988-09-26	0.15556	2017-08-22 22:17:53
70	1990-03-26	0.21667	2017-08-22 22:17:53
71	1977-12-23	0.06667	2017-08-22 22:17:53
72	1997-06-26	0.29	2017-08-22 22:17:53
73	2001-02-07	0.121	2017-10-20 09:54:16
74	1997-06-26	0.29	2017-10-20 09:54:16
75	2015-12-29	0.46	2017-08-22 22:17:53
76	1984-09-24	0.1	2017-08-22 22:17:53
77	1986-03-24	0.1	2017-08-22 22:17:53
78	1982-03-30	0.1	2017-08-22 22:17:53
79	1972-12-22	0.025	2017-08-22 22:17:53
80	1976-09-24	0.05556	2017-08-22 22:17:53
81	1977-03-25	0.05556	2017-08-22 22:17:53
82	1993-06-24	0.21667	2017-08-22 22:17:53
83	1993-12-27	0.21667	2017-08-22 22:17:53
84	1980-09-24	0.08889	2017-08-22 22:17:53
85	1981-03-25	0.1	2017-08-22 22:17:53
86	2010-09-28	0.15	2017-08-22 22:17:53
87	2014-09-26	0.37	2017-08-22 22:17:53
88	1989-06-26	0.17778	2017-08-22 22:17:53
89	2004-03-29	0.335	2017-08-22 22:17:53
90	1983-06-24	0.1	2017-08-22 22:17:53
91	2000-06-28	0.29	2017-08-22 22:17:53
92	1999-12-29	0.29	2017-08-22 22:17:53
93	1986-12-24	0.11111	2017-08-22 22:17:53
94	1987-06-24	0.12222	2017-08-22 22:17:53
95	1978-12-22	0.07778	2017-08-22 22:17:53
96	1995-12-27	0.25	2017-08-22 22:17:53
97	1996-06-26	0.25	2017-08-22 22:17:53
98	2000-09-27	0.29	2017-08-22 22:17:53
99	2013-03-26	0.32	2017-08-22 22:17:53
100	2000-03-29	0.29	2017-08-22 22:17:53
101	1987-03-25	0.11111	2017-08-22 22:17:53
102	1992-06-24	0.21667	2017-08-22 22:17:53
103	1975-06-24	0.03889	2017-08-22 22:17:53
104	1999-03-29	0.29	2017-08-22 22:17:53
105	2003-12-29	0.335	2017-08-22 22:17:53
106	2009-09-28	0.15	2017-08-22 22:17:53
107	1988-06-24	0.13333	2017-08-22 22:17:53
108	2007-12-27	0.42	2017-08-22 22:17:53
109	2013-09-26	0.32	2017-08-22 22:17:53
110	1990-12-24	0.21667	2017-08-22 22:17:53
111	1995-03-27	0.21667	2017-08-22 22:17:53
112	1983-12-23	0.1	2017-08-22 22:17:53
113	2000-12-27	0.29	2017-08-22 22:17:53
114	2017-07-27	0.46	2017-08-22 22:17:53
115	1988-03-25	0.13333	2017-08-22 22:17:53
116	2003-06-26	0.335	2017-08-22 22:17:53
117	2016-03-29	0.46	2017-08-22 22:17:53
118	1982-10-04	0.1	2017-08-22 22:17:53
119	1990-09-24	0.21667	2017-08-22 22:17:53
120	1995-06-28	0.25	2017-08-22 22:17:53
121	2001-03-28	0.169	2017-08-22 22:17:53
122	2016-06-28	0.46	2017-08-22 22:17:53
123	1996-12-27	0.25	2017-08-22 22:17:53
124	1986-09-24	0.11111	2017-08-22 22:17:53
125	1999-06-28	0.29	2017-08-22 22:17:53
126	2008-12-29	0.42	2017-08-22 22:17:53
127	1995-09-27	0.25	2017-08-22 22:17:53
128	1996-03-27	0.25	2017-08-22 22:17:53
129	2008-03-27	0.42	2017-08-22 22:17:53
130	1974-12-24	0.03889	2017-08-22 22:17:53
131	2016-12-23	0.46	2017-08-22 22:17:53
132	1992-03-25	0.21667	2017-08-22 22:17:53
133	2004-06-28	0.335	2017-08-22 22:17:53
134	2004-12-29	0.335	2017-08-22 22:17:53
135	2008-06-26	0.42	2017-08-22 22:17:53
136	1974-09-24	0.03333	2017-08-22 22:17:53
137	1991-06-24	0.21667	2017-08-22 22:17:53
138	2002-06-26	0.335	2017-08-22 22:17:53
139	2006-03-29	0.375	2017-08-22 22:17:53
140	2006-09-27	0.375	2017-08-22 22:17:53
141	1985-06-25	0.1	2017-08-22 22:17:53
142	1981-09-24	0.1	2017-08-22 22:17:53
143	2014-12-29	0.42	2017-08-22 22:17:53
144	1998-06-26	0.29	2017-08-22 22:17:53
145	1976-12-27	0.05556	2017-08-22 22:17:53
146	1985-03-26	0.1	2017-08-22 22:17:53
147	1985-09-24	0.1	2017-08-22 22:17:53
148	1976-03-25	0.04444	2017-08-22 22:17:53
149	1997-03-26	0.25	2017-08-22 22:17:53
150	2015-09-28	0.42	2017-08-22 22:17:53
151	1994-06-24	0.21667	2017-08-22 22:17:53
152	2007-03-28	0.375	2017-08-22 22:17:53
153	1973-06-25	0.02778	2017-08-22 22:17:53
154	1977-09-26	0.06667	2017-08-22 22:17:53
155	1980-03-25	0.08889	2017-08-22 22:17:53
156	1988-12-23	0.15556	2017-08-22 22:17:53
157	2005-12-28	0.335	2017-08-22 22:17:53
158	2007-06-27	0.42	2017-08-22 22:17:53
159	2011-09-28	0.25	2017-08-22 22:17:53
160	1973-09-24	0.02778	2017-08-22 22:17:53
161	1981-12-24	0.1	2017-08-22 22:17:53
162	1998-12-29	0.29	2017-08-22 22:17:53
163	2001-06-27	0.335	2017-08-22 22:17:53
164	2005-09-28	0.335	2017-08-22 22:17:53
165	2002-12-27	0.335	2017-08-22 22:17:53
166	1985-12-24	0.1	2017-08-22 22:17:53
167	2010-03-29	0.15	2017-08-22 22:17:53
168	2001-09-26	0.335	2017-08-22 22:17:53
169	2003-03-26	0.335	2017-08-22 22:17:53
170	2014-03-27	0.37	2017-08-22 22:17:53
171	1980-06-24	0.08889	2017-08-22 22:17:53
172	2010-06-28	0.15	2017-08-22 22:17:53
173	1997-09-26	0.29	2017-08-22 22:17:53
174	1998-03-27	0.29	2017-08-22 22:17:53
175	2010-12-29	0.15	2017-08-22 22:17:53
176	1972-06-26	0.025	2017-08-22 22:17:53
177	2014-06-26	0.37	2017-08-22 22:17:53
178	1976-06-24	0.05556	2017-08-22 22:17:53
179	1989-12-22	0.21667	2017-08-22 22:17:53
180	1993-09-24	0.21667	2017-08-22 22:17:53
181	1994-03-25	0.21667	2017-08-22 22:17:53
182	2006-06-28	0.375	2017-08-22 22:17:53
183	2006-12-27	0.375	2017-08-22 22:17:53
184	1972-09-25	0.025	2017-08-22 22:17:53
185	1973-03-26	0.025	2017-08-22 22:17:53

6.9 KiB Raw Blame History

6.9 KiB

Raw Blame History