f/hiacx-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

3.8 KiB

Raw Blame History

1	Date	Dividends
2	1985-08-30	0.170000
3	1987-11-30	0.150000
4	1988-11-30	0.180000
5	1989-01-31	3.530000
6	1989-12-29	0.250000
7	1991-07-31	0.060000
8	1996-12-31	0.240000
9	1999-02-26	30.330000
10	2015-08-19	10.606000
11	1984-07-31	0.200000
12	1990-06-29	0.320000
13	1991-09-30	0.120000
14	1993-11-30	0.060000
15	1994-02-28	0.060000
16	1996-11-29	0.010000
17	2008-06-23	0.003000
18	1984-06-29	0.560000
19	1986-02-28	0.180000
20	1986-04-30	0.100000
21	1987-10-30	0.050000
22	1990-03-30	0.290000
23	1996-07-31	0.080000
24	1984-12-31	0.110000
25	1990-07-31	0.080000
26	1992-01-31	36.150000
27	1992-06-30	0.100000
28	1995-05-31	0.450000
29	2018-08-23	4.291000
30	2019-08-27	5.007000
31	1985-04-30	0.150000
32	1987-03-31	0.170000
33	1988-07-29	0.060000
34	1995-07-31	0.230000
35	1998-02-27	28.980000
36	2005-06-22	0.162000
37	2018-12-21	1.137000
38	1985-05-31	0.100000
39	1986-10-31	0.080000
40	1989-05-31	0.400000
41	2000-12-28	4.180000
42	1985-01-31	2.390000
43	1987-08-31	0.150000
44	1988-01-29	0.030000
45	1990-08-31	0.220000
46	1993-05-28	0.050000
47	1998-12-31	2.460000
48	1984-04-30	0.720000
49	1986-03-31	0.180000
50	1986-11-28	0.230000
51	1988-05-31	0.160000
52	1995-02-28	0.220000
53	1997-12-31	1.410000
54	2016-08-25	4.274000
55	2023-12-22	0.423000
56	1986-05-30	0.220000
57	1988-08-31	0.120000
58	1989-10-31	0.200000
59	1991-05-31	0.250000
60	1993-02-26	0.030000
61	1995-08-31	0.290000
62	2009-12-30	0.248000
63	2020-12-21	1.877000
64	2021-08-27	3.082000
65	1988-06-30	0.140000
66	1988-09-30	0.160000
67	1990-02-28	0.280000
68	1992-04-30	0.030000
69	1994-01-31	26.210000
70	1986-06-30	0.140000
71	1987-02-27	0.490000
72	1987-04-30	0.140000
73	1988-03-31	0.110000
74	1990-10-31	0.220000
75	1995-03-31	0.280000
76	1995-06-30	0.250000
77	2007-12-17	0.035000
78	2008-12-16	0.720000
79	2020-08-27	2.108000
80	2023-08-25	0.697000
81	2024-08-23	0.872000
82	1990-05-31	0.330000
83	1992-12-31	0.070000
84	1995-01-31	15.740000
85	2004-06-29	0.018000
86	2022-08-26	6.395000
87	2024-12-20	1.727000
88	1986-12-31	0.150000
89	1989-02-28	0.140000
90	1994-05-31	0.170000
91	1996-03-29	0.280000
92	2000-06-28	9.251000
93	2017-08-24	0.688000
94	1992-09-30	0.170000
95	1993-01-29	10.830000
96	1993-06-30	0.010000
97	1993-12-31	0.030000
98	1995-04-28	0.160000
99	1985-03-29	0.260000
100	1986-09-30	0.030000
101	1987-07-31	0.090000
102	1988-02-29	0.120000
103	1989-07-31	0.120000
104	1991-01-31	0.320000
105	1991-02-28	0.260000
106	1991-04-30	0.290000
107	1995-10-31	0.150000
108	2007-06-19	0.035000
109	1987-12-31	0.930000
110	1989-04-28	0.140000
111	1989-06-30	0.240000
112	1992-07-31	0.040000
113	1994-03-31	0.140000
114	2003-12-29	0.216000
115	2006-12-13	0.757000
116	2016-12-21	0.462000
117	1988-12-30	0.130000
118	1989-09-29	0.250000
119	1997-02-28	29.580000
120	1985-10-31	0.120000
121	1990-09-28	0.250000
122	1991-11-29	0.140000
123	1996-06-28	0.300000
124	1996-10-31	0.270000
125	1987-01-30	5.910000
126	1991-08-30	0.270000
127	1994-07-29	0.090000
128	1995-09-29	0.190000
129	1995-11-30	0.370000
130	1997-04-30	0.480000
131	1984-05-31	0.630000
132	1984-11-30	0.120000
133	1991-06-28	0.270000
134	2005-12-19	0.360000
135	2022-12-21	0.290000
136	1984-09-28	0.070000
137	1985-09-30	0.240000
138	1987-05-29	0.270000
139	1990-11-30	0.280000
140	1993-03-31	0.040000
141	1997-01-31	0.130000
142	2025-12-19	0.984000
143	1990-01-31	6.720000
144	1990-04-30	0.080000
145	1991-12-31	0.040000
146	2009-12-17	0.040000
147	2014-12-22	0.702000
148	1989-03-31	0.080000
149	1994-11-30	0.190000
150	2021-12-22	2.106000
151	1986-08-29	0.280000
152	1989-11-30	0.250000
153	1992-02-28	0.110000
154	1995-12-29	0.210000
155	1984-08-31	0.320000
156	1987-06-30	0.150000
157	1992-05-29	0.030000
158	1996-01-31	22.880000
159	1997-03-31	0.190000
160	2004-12-15	0.148000
161	2017-12-20	2.457000
162	2025-08-25	5.913000
163	1985-02-28	0.120000
164	1985-11-29	0.130000
165	1992-08-31	0.120000
166	1994-06-30	0.100000
167	1996-08-30	0.180000
168	1996-09-30	0.170000
169	1999-06-25	0.060000
170	1999-12-28	2.680000
171	1987-09-30	0.130000
172	1990-12-31	0.260000
173	1993-09-30	0.100000
174	1994-12-30	0.140000
175	1996-04-30	0.130000
176	2001-12-28	2.650000
177	2019-12-23	0.783000
178	1985-07-31	0.080000
179	1994-08-31	0.090000
180	1994-10-31	0.080000
181	2003-06-26	0.008000
182	1986-07-31	0.140000
183	1988-10-31	0.180000
184	1991-03-28	0.090000
185	1992-03-31	0.060000
186	1996-02-29	0.280000
187	2001-06-27	0.030000
188	1985-06-28	0.150000
189	1988-04-29	0.070000
190	1989-08-31	0.130000
191	1992-11-30	0.040000
192	1996-05-31	0.310000
193	1985-12-31	0.110000
194	2015-12-22	0.471000
195	1986-01-31	4.900000
196	1994-09-30	0.030000

3.8 KiB Raw Blame History

3.8 KiB

Raw Blame History