f/fgrix-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

3.5 KiB

Raw Blame History

1	Date	Dividends
2	2010-04-09	0.021000
3	2014-10-03	0.138000
4	2015-04-01	0.129000
5	2015-07-01	0.140000
6	1987-07-13	0.140000
7	1990-06-15	0.140000
8	1991-06-14	0.100000
9	2002-12-20	0.120000
10	2024-12-26	1.359000
11	2012-09-07	0.009000
12	2012-12-14	0.161000
13	2018-12-07	0.571000
14	1999-06-11	0.100000
15	2002-10-31	0.034000
16	2004-10-08	0.100000
17	2006-04-07	0.070000
18	2010-12-10	0.023000
19	2013-04-05	0.091000
20	2019-12-20	0.370000
21	2021-09-03	1.424000
22	1998-09-04	1.670000
23	2001-03-09	0.100000
24	2022-04-01	0.133000
25	2025-09-12	4.564000
26	1997-09-05	1.180000
27	1997-12-19	0.390000
28	2016-07-08	0.096000
29	2019-04-05	0.212000
30	2025-04-04	0.182000
31	1999-12-17	0.560000
32	2011-07-08	0.089000
33	1996-12-20	0.260000
34	1999-09-03	2.540000
35	2000-12-22	0.920000
36	2005-07-01	0.120000
37	2008-09-12	0.030000
38	2020-10-02	0.195000
39	1986-12-29	0.060000
40	1993-03-12	0.120000
41	2010-07-09	0.020000
42	2013-10-04	0.119000
43	2013-12-13	0.129000
44	1996-09-06	1.120000
45	2006-10-06	0.060000
46	2010-10-01	0.028000
47	2015-10-02	0.155000
48	1998-12-18	0.680000
49	2005-10-07	0.120000
50	2005-12-16	3.370000
51	2009-07-10	0.034000
52	2025-10-03	0.285000
53	1993-12-03	0.510000
54	2003-12-19	0.130000
55	2007-12-14	1.250000
56	2020-09-04	0.658000
57	2008-10-03	0.087000
58	2013-07-05	0.112000
59	2021-07-02	0.254000
60	1987-10-13	1.320000
61	1988-09-23	0.140000
62	1989-03-22	0.140000
63	1994-12-02	0.500000
64	2001-06-08	0.100000
65	2021-12-17	0.789000
66	1989-06-21	0.140000
67	2005-09-09	1.140000
68	2021-04-05	0.138000
69	2023-10-06	0.201000
70	1987-12-22	0.250000
71	2002-06-28	0.036000
72	2003-03-07	0.100000
73	2007-07-06	0.090000
74	2018-07-06	0.184000
75	2014-07-03	0.139000
76	2019-07-05	0.127000
77	2026-04-01	0.171000
78	1991-09-06	0.740000
79	2004-06-18	0.080000
80	2010-04-30	0.028000
81	2011-04-06	0.047000
82	2012-07-06	0.108000
83	2006-09-06	5.800000
84	2015-12-11	0.177000
85	1992-09-04	2.390000
86	2001-12-21	0.100000
87	2002-09-06	0.080000
88	2024-09-13	2.195000
89	2025-12-26	1.417000
90	1995-06-16	0.100000
91	2022-10-07	0.219000
92	2022-12-22	0.205000
93	2024-07-05	0.218000
94	2024-10-04	0.236000
95	1992-06-12	0.120000
96	2007-10-05	0.060000
97	2016-12-09	0.165000
98	2022-09-09	0.831000
99	2017-07-07	0.038000
100	2023-12-21	0.800000
101	1986-07-14	0.050000
102	1988-03-15	0.140000
103	2002-07-31	0.038000
104	2004-12-17	0.450000
105	2008-07-11	0.098000
106	1990-12-14	0.160000
107	2007-09-07	2.660000
108	2019-09-06	0.297000
109	2023-09-08	0.691000
110	2004-09-03	0.160000
111	2009-10-02	0.025000
112	2024-04-05	0.197000
113	1989-12-07	0.920000
114	1993-09-03	0.540000
115	1997-03-14	0.100000
116	2002-06-07	0.050000
117	2003-09-05	0.100000
118	2019-10-04	0.198000
119	2025-07-11	0.228000
120	1992-12-04	0.360000
121	2000-03-10	0.090000
122	2008-04-04	0.070000
123	2016-10-07	0.169000
124	2017-12-08	0.166000
125	2018-04-06	0.104000
126	2018-10-05	0.260000
127	1990-09-07	0.360000
128	1996-03-15	0.100000
129	2001-09-07	0.470000
130	2003-06-06	0.070000
131	2016-04-08	0.164000
132	1990-03-09	0.140000
133	1997-06-13	0.120000
134	2009-04-03	0.028000
135	2012-04-04	0.078000
136	1988-06-22	0.140000
137	2020-04-03	0.183000
138	2023-04-05	0.193000
139	2005-04-01	0.120000
140	2020-07-10	0.245000
141	1987-04-13	0.090000
142	1991-03-08	0.120000
143	1998-06-05	0.110000
144	2000-06-09	0.100000
145	2004-03-05	0.100000
146	2009-12-11	0.029000
147	2011-10-07	0.081000
148	2014-04-04	0.114000
149	1988-12-16	0.200000
150	1989-09-07	0.820000
151	1993-06-25	0.120000
152	1995-03-17	0.100000
153	1995-12-08	0.510000
154	2020-12-18	0.300000
155	2009-09-11	0.008000
156	2011-12-09	0.093000
157	2017-10-06	0.284000
158	1994-03-18	0.100000
159	1994-06-17	0.100000
160	1996-06-21	0.100000
161	2002-03-08	0.090000
162	2006-07-07	0.080000
163	2018-09-07	0.014000
164	2021-10-01	0.516000
165	2008-12-12	0.039000
166	2012-10-05	0.092000
167	2014-12-12	0.129000
168	1992-03-13	0.100000
169	1994-09-02	0.940000
170	1995-09-08	0.670000
171	1999-03-12	0.090000
172	2007-04-04	0.060000
173	2022-07-01	0.242000
174	2026-07-10	0.228000
175	2017-04-07	0.087000
176	2023-07-07	0.245000
177	1986-10-13	0.050000
178	1991-12-06	0.060000
179	1998-03-06	0.090000
180	2000-09-08	3.170000
181	2006-12-15	0.340000

3.5 KiB Raw Blame History

3.5 KiB

Raw Blame History