f/hcn-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

7.8 KiB

Raw Blame History

1	Date	Dividends	ctime
2	1992-10-28	0.47	2017-08-22 22:17:53
3	1985-04-30	0.3468	2018-02-07 09:51:24
4	1989-04-26	0.4	2017-08-22 22:17:53
5	1993-07-28	0.485	2017-08-22 22:17:53
6	2005-01-27	0.6	2017-08-22 22:17:53
7	2006-07-27	0.64	2017-08-22 22:17:53
8	1998-05-01	0.545	2017-08-22 22:17:53
9	1985-07-30	0.3802	2018-02-07 09:51:24
10	2015-05-08	0.825	2017-08-22 22:17:53
11	1988-01-27	0.44	2017-08-22 22:17:53
12	1989-07-26	0.42	2017-08-22 22:17:53
13	1993-10-27	0.49	2017-08-22 22:17:53
14	1998-07-31	0.55	2017-08-22 22:17:53
15	2011-05-06	0.715	2017-08-22 22:17:53
16	2015-08-07	0.825	2017-08-22 22:17:53
17	1989-10-25	0.42	2017-08-22 22:17:53
18	2001-01-29	0.585	2017-08-22 22:17:53
19	2002-07-29	0.585	2017-08-22 22:17:53
20	1996-10-30	0.52	2017-08-22 22:17:53
21	2011-02-04	0.69	2017-08-22 22:17:53
22	1992-04-29	0.46	2017-08-22 22:17:53
23	1996-07-31	0.52	2017-08-22 22:17:53
24	1985-10-29	0.38	2018-02-07 09:51:24
25	1992-07-29	0.465	2017-08-22 22:17:53
26	1985-01-29	0.3468	2018-02-07 09:51:24
27	1989-01-25	0.38	2017-08-22 22:17:53
28	2001-10-29	0.585	2017-08-22 22:17:53
29	2005-10-27	0.62	2017-08-22 22:17:53
30	1993-04-30	0.48	2017-08-22 22:17:53
31	1998-01-30	0.54	2017-08-22 22:17:53
32	2015-02-06	0.825	2017-08-22 22:17:53
33	1991-04-26	0.44	2017-08-22 22:17:53
34	2008-04-30	0.68	2017-08-22 22:17:53
35	1999-10-29	0.575	2017-08-22 22:17:53
36	2012-02-03	0.74	2017-08-22 22:17:53
37	2012-08-03	0.74	2017-08-22 22:17:53
38	2016-11-04	0.86	2017-08-22 22:17:53
39	1991-01-25	0.435	2017-08-22 22:17:53
40	1991-07-26	0.445	2017-08-22 22:17:53
41	2008-07-30	0.68	2017-08-22 22:17:53
42	2012-11-02	0.74	2017-08-22 22:17:53
43	1986-10-28	0.39	2018-02-07 09:51:24
44	1987-04-28	0.42	2017-08-22 22:17:53
45	1991-10-25	0.45	2017-08-22 22:17:53
46	1998-10-30	0.555	2017-08-22 22:17:53
47	2000-04-28	0.585	2017-08-22 22:17:53
48	1986-01-28	0.38	2018-02-07 09:51:24
49	1987-07-28	0.42	2017-08-22 22:17:53
50	2015-11-06	0.825	2017-08-22 22:17:53
51	2017-05-05	0.87	2017-08-22 22:17:53
52	2007-01-29	0.299	2017-08-22 22:17:53
53	2004-04-28	0.6	2017-08-22 22:17:53
54	1999-01-29	0.56	2017-08-22 22:17:53
55	2000-07-28	0.585	2017-08-22 22:17:53
56	2009-05-07	0.68	2017-08-22 22:17:53
57	2013-05-03	0.765	2017-08-22 22:17:53
58	2016-02-05	0.86	2017-08-22 22:17:53
59	2017-08-04	0.87	2017-08-22 22:17:53
60	2003-01-29	0.585	2017-08-22 22:17:53
61	2004-07-28	0.6	2017-08-22 22:17:53
62	2007-05-02	0.66	2017-08-22 22:17:53
63	2006-12-20	0.341	2017-10-20 09:54:16
64	2009-02-05	0.68	2017-08-22 22:17:53
65	2011-08-05	0.715	2017-08-22 22:17:53
66	2013-02-01	0.765	2017-08-22 22:17:53
67	1992-01-24	0.455	2017-08-22 22:17:53
68	2007-08-01	0.66	2017-08-22 22:17:53
69	2011-11-04	0.715	2017-08-22 22:17:53
70	1986-04-29	0.38	2018-02-07 09:51:24
71	2007-10-31	0.66	2017-08-22 22:17:53
72	1999-04-30	0.565	2017-08-22 22:17:53
73	1986-07-29	0.39	2018-02-07 09:51:24
74	1987-01-27	0.39	2017-08-22 22:17:53
75	2016-05-06	0.86	2017-08-22 22:17:53
76	2003-04-28	0.585	2017-08-22 22:17:53
77	1999-07-30	0.57	2017-08-22 22:17:53
78	2000-01-28	0.58	2017-08-22 22:17:53
79	2008-11-06	0.68	2017-08-22 22:17:53
80	2012-05-04	0.74	2017-08-22 22:17:53
81	2016-08-05	0.86	2017-08-22 22:17:53
82	2017-02-03	0.87	2017-08-22 22:17:53
83	2004-01-28	0.585	2017-08-22 22:17:53
84	2010-02-04	0.68	2017-08-22 22:17:53
85	2010-08-05	0.69	2017-08-22 22:17:53
86	2010-11-04	0.69	2017-08-22 22:17:53
87	1993-01-26	0.475	2017-08-22 22:17:53
88	2002-04-26	0.585	2017-08-22 22:17:53
89	2013-11-07	0.765	2017-08-22 22:17:53
90	2006-04-26	0.64	2017-08-22 22:17:53
91	1997-01-30	0.52	2017-08-22 22:17:53
92	2006-10-27	0.64	2017-08-22 22:17:53
93	2009-11-05	0.68	2017-08-22 22:17:53
94	2014-02-06	0.795	2017-08-22 22:17:53
95	1994-05-02	0.5	2017-08-22 22:17:53
96	2000-10-27	0.585	2017-08-22 22:17:53
97	2009-08-06	0.68	2017-08-22 22:17:53
98	2013-08-02	0.765	2017-08-22 22:17:53
99	1994-01-31	0.495	2017-08-22 22:17:53
100	1988-04-26	0.44	2017-08-22 22:17:53
101	1997-05-01	0.525	2017-08-22 22:17:53
102	1997-10-30	0.535	2017-08-22 22:17:53
103	2001-04-27	0.585	2017-08-22 22:17:53
104	2006-01-27	0.62	2017-08-22 22:17:53
105	2014-05-08	0.795	2017-08-22 22:17:53
106	2014-11-06	0.795	2017-08-22 22:17:53
107	1988-07-26	0.44	2017-08-22 22:17:53
108	2005-04-27	0.62	2017-08-22 22:17:53
109	1997-07-31	0.53	2017-08-22 22:17:53
110	2001-07-27	0.585	2017-08-22 22:17:53
111	2010-05-06	0.68	2017-08-22 22:17:53
112	2014-08-07	0.795	2017-08-22 22:17:53
113	1988-10-25	0.38	2017-08-22 22:17:53
114	2002-01-29	0.585	2017-08-22 22:17:53
115	2005-07-27	0.62	2017-08-22 22:17:53
116	1995-01-30	0.515	2017-08-22 22:17:53
117	1995-08-02	0.52	2017-08-22 22:17:53
118	2003-10-30	0.585	2017-08-22 22:17:53
119	2002-10-29	0.585	2017-08-22 22:17:53
120	1990-01-25	0.43	2017-08-22 22:17:53
121	2004-10-28	0.6	2017-08-22 22:17:53
122	1994-10-31	0.51	2017-08-22 22:17:53
123	1996-05-01	0.52	2017-08-22 22:17:53
124	1994-08-01	0.505	2017-08-22 22:17:53
125	1996-01-31	0.52	2017-08-22 22:17:53
126	1987-10-28	0.42	2017-08-22 22:17:53
127	1990-04-26	0.43	2017-08-22 22:17:53
128	1990-07-26	0.43	2017-08-22 22:17:53
129	2008-01-29	0.66	2017-08-22 22:17:53
130	1995-05-01	0.52	2017-08-22 22:17:53
131	1990-10-25	0.43	2017-08-22 22:17:53
132	2003-07-29	0.585	2017-08-22 22:17:53
133	1995-11-01	0.52	2017-08-22 22:17:53
134	2017-11-06	0.87	2017-11-07 10:58:03
135	1987-10-28	0.42	2017-11-07 10:58:03
136	1990-04-26	0.43	2017-11-07 10:58:03
137	1990-07-26	0.43	2017-11-07 10:58:03
138	2008-01-29	0.66	2017-11-07 10:58:03
139	1995-05-01	0.52	2017-11-07 10:58:03
140	1990-10-25	0.43	2017-11-07 10:58:03
141	1995-08-04	0.52	2018-02-07 09:51:24
142	1995-05-01	0.52	2018-02-07 09:51:24
143	1990-10-25	0.43	2018-02-07 09:51:24
144	2003-07-29	0.585	2017-11-07 10:58:03
145	1995-11-01	0.52	2017-11-07 10:58:03
146	2018-02-12	0.87	2018-02-26 21:44:31
147	2011-11-04	0.715	2018-02-26 21:44:31
148	1986-04-29	0.38	2018-02-26 21:44:31
149	2007-10-31	0.66	2018-02-26 21:44:31
150	1999-04-30	0.565	2018-02-26 21:44:31
151	1986-07-29	0.39	2018-02-26 21:44:31
152	1987-01-27	0.39	2018-02-26 21:44:31
153	2016-05-06	0.86	2018-02-26 21:44:31
154	2003-04-28	0.585	2018-02-26 21:44:31
155	1999-07-30	0.57	2018-02-26 21:44:31
156	2000-01-28	0.58	2018-02-26 21:44:31
157	2008-11-06	0.68	2018-02-26 21:44:31
158	2012-05-04	0.74	2018-02-26 21:44:31
159	2016-08-05	0.86	2018-02-26 21:44:31
160	2017-02-03	0.87	2018-02-26 21:44:31
161	2004-01-28	0.585	2018-02-26 21:44:31
162	2010-02-04	0.68	2018-02-26 21:44:31
163	2010-08-05	0.69	2018-02-26 21:44:31
164	2010-11-04	0.69	2018-02-26 21:44:31
165	1993-01-26	0.475	2018-02-26 21:44:31
166	2002-04-26	0.585	2018-02-26 21:44:31
167	2013-11-07	0.765	2018-02-26 21:44:31
168	2006-04-26	0.64	2018-02-26 21:44:31
169	1997-01-30	0.52	2018-02-26 21:44:31
170	2006-10-27	0.64	2018-02-26 21:44:31
171	2009-11-05	0.68	2018-02-26 21:44:31
172	2014-02-06	0.795	2018-02-26 21:44:31
173	1994-05-02	0.5	2018-02-26 21:44:31
174	2000-10-27	0.585	2018-02-26 21:44:31
175	2009-08-06	0.68	2018-02-26 21:44:31
176	2013-08-02	0.765	2018-02-26 21:44:31
177	1994-01-31	0.495	2018-02-26 21:44:31
178	1988-04-26	0.44	2018-02-26 21:44:31
179	1997-05-01	0.525	2018-02-26 21:44:31
180	1997-10-30	0.535	2018-02-26 21:44:31
181	2001-04-27	0.585	2018-02-26 21:44:31
182	2006-01-27	0.62	2018-02-26 21:44:31
183	2014-05-08	0.795	2018-02-26 21:44:31
184	2014-11-06	0.795	2018-02-26 21:44:31
185	1988-07-26	0.44	2018-02-26 21:44:31
186	2005-04-27	0.62	2018-02-26 21:44:31
187	1997-07-31	0.53	2018-02-26 21:44:31
188	2001-07-27	0.585	2018-02-26 21:44:31
189	2010-05-06	0.68	2018-02-26 21:44:31
190	2014-08-07	0.795	2018-02-26 21:44:31
191	1988-10-25	0.38	2018-02-26 21:44:31
192	2002-01-29	0.585	2018-02-26 21:44:31
193	2005-07-27	0.62	2018-02-26 21:44:31
194	1995-01-30	0.515	2018-02-26 21:44:31
195	1995-08-02	0.52	2018-02-26 21:44:31
196	2003-10-30	0.585	2018-02-26 21:44:31
197	2002-10-29	0.585	2018-02-26 21:44:31
198	1990-01-25	0.43	2018-02-26 21:44:31
199	2004-10-28	0.6	2018-02-26 21:44:31
200	1994-10-31	0.51	2018-02-26 21:44:31
201	1996-05-01	0.52	2018-02-26 21:44:31
202	1994-08-01	0.505	2018-02-26 21:44:31
203	1996-01-31	0.52	2018-02-26 21:44:31
204	2017-11-06	0.87	2018-02-26 21:44:31
205	1987-10-28	0.42	2018-02-26 21:44:31
206	1990-04-26	0.43	2018-02-26 21:44:31
207	1990-07-26	0.43	2018-02-26 21:44:31
208	2008-01-29	0.66	2018-02-26 21:44:31
209	1995-08-04	0.52	2018-02-26 21:44:31
210	1995-05-01	0.52	2018-02-26 21:44:31
211	1990-10-25	0.43	2018-02-26 21:44:31
212	2003-07-29	0.585	2018-02-26 21:44:31
213	1995-11-01	0.52	2018-02-26 21:44:31

7.8 KiB Raw Blame History

7.8 KiB

Raw Blame History