f/hadax-dividend.csv at 19b33d5a18a5f2c124bf1e0a7de3acea9d711f4b

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

4.2 KiB

Raw Blame History

1	Date	Dividends
2	1994-07-29	0.360000
3	1995-01-31	2.450000
4	1989-07-31	0.430000
5	1992-02-28	0.050000
6	1996-12-31	0.530000
7	2000-06-28	26.350000
8	2021-12-22	0.631000
9	1992-08-31	0.520000
10	2003-12-29	0.219000
11	2015-08-19	0.134000
12	1985-07-31	0.480000
13	1989-02-28	0.460000
14	2022-08-26	4.136000
15	1985-04-30	0.550000
16	1987-10-30	0.040000
17	1993-08-31	0.490000
18	1996-01-31	4.890000
19	1997-03-31	0.420000
20	2004-12-15	0.261000
21	1987-08-31	0.480000
22	1987-02-27	0.040000
23	1994-03-31	0.480000
24	1995-06-30	0.590000
25	1984-06-29	0.050000
26	2007-06-19	0.021000
27	1994-02-28	0.440000
28	1985-03-29	0.060000
29	1985-06-28	0.050000
30	1985-12-31	0.540000
31	1990-09-28	0.050000
32	1994-10-31	0.390000
33	1984-10-31	0.590000
34	2003-06-26	0.298000
35	1989-01-31	1.560000
36	1984-08-31	0.670000
37	1983-06-30	0.410000
38	1986-03-31	0.510000
39	1987-01-30	0.170000
40	2000-12-28	1.610000
41	2017-08-24	0.141000
42	1996-06-28	0.450000
43	2016-08-25	0.329000
44	2023-12-22	0.522000
45	1991-01-31	1.470000
46	1994-05-31	0.470000
47	1984-05-31	0.660000
48	1986-08-29	0.050000
49	1996-11-29	0.470000
50	1997-02-28	10.310000
51	1983-07-29	0.030000
52	1987-12-31	2.920000
53	1988-02-29	0.510000
54	1990-11-30	0.610000
55	1990-12-31	0.620000
56	1991-07-31	0.480000
57	1986-05-30	0.060000
58	1998-12-31	5.890000
59	1996-02-29	0.460000
60	1986-04-30	0.450000
61	1993-12-31	0.410000
62	1988-01-29	0.030000
63	1993-06-30	0.440000
64	1987-04-30	0.380000
65	1995-11-30	0.540000
66	2024-08-23	1.833000
67	1988-10-31	0.340000
68	1990-07-31	0.530000
69	1987-09-30	0.450000
70	1995-02-28	0.520000
71	2020-12-21	0.699000
72	1990-05-31	0.650000
73	1991-02-28	0.570000
74	1989-05-31	0.680000
75	1989-08-31	0.600000
76	1987-05-29	0.050000
77	2017-12-20	0.569000
78	1999-02-26	24.770000
79	2005-06-22	0.276000
80	1984-07-31	0.530000
81	1983-08-31	0.550000
82	1986-10-31	0.270000
83	1988-07-29	0.030000
84	1990-10-31	0.500000
85	1992-06-30	0.610000
86	1996-07-31	0.500000
87	1983-10-31	0.360000
88	1986-02-28	0.560000
89	2015-12-22	0.384000
90	2018-08-23	1.309000
91	1994-04-29	0.310000
92	2009-08-27	0.023000
93	1997-01-31	0.420000
94	1991-12-31	0.550000
95	1994-06-30	0.470000
96	2022-12-21	0.417000
97	1991-05-31	0.610000
98	1991-10-31	0.440000
99	1996-05-30	0.590000
100	2024-12-20	0.822000
101	1985-10-31	0.410000
102	1993-04-30	0.340000
103	1988-09-30	0.440000
104	1992-05-29	0.050000
105	2020-08-27	1.408000
106	1986-12-31	0.400000
107	1987-11-30	0.510000
108	1996-08-30	0.520000
109	2008-06-23	0.037000
110	1986-01-31	4.530000
111	1992-11-30	0.520000
112	1991-06-28	0.050000
113	1984-09-28	0.060000
114	1990-02-28	0.580000
115	1989-11-30	0.540000
116	1990-03-30	0.060000
117	1986-06-30	0.500000
118	1988-08-31	0.520000
119	1989-04-28	0.040000
120	1996-04-30	0.450000
121	2009-12-17	0.334000
122	2016-12-21	0.441000
123	1988-03-31	0.420000
124	1993-03-31	0.500000
125	1994-12-30	0.570000
126	1983-11-30	0.480000
127	1983-12-30	0.040000
128	2006-12-13	0.570000
129	1995-08-31	0.590000
130	1994-11-30	0.550000
131	1991-11-29	0.060000
132	1986-07-31	0.450000
133	1989-03-31	0.460000
134	1993-09-30	0.450000
135	1985-11-29	0.050000
136	1987-03-31	0.430000
137	1992-07-31	0.350000
138	1993-01-29	7.250000
139	1999-12-28	6.170000
140	1985-08-30	0.060000
141	1990-01-31	5.940000
142	1993-07-30	0.330000
143	1985-05-31	0.710000
144	1989-06-30	0.540000
145	2018-12-21	0.710000
146	1983-09-30	0.390000
147	1989-12-29	0.060000
148	1992-03-31	0.550000
149	1996-09-30	0.490000
150	1983-05-31	0.760000
151	1984-02-28	0.530000
152	1984-12-31	0.570000
153	2014-12-22	0.383000
154	1984-04-30	0.440000
155	1990-06-29	0.060000
156	1985-09-30	0.510000
157	1995-07-31	0.440000
158	1984-03-30	0.050000
159	1988-12-30	0.050000
160	1985-01-31	0.500000
161	2019-12-23	0.538000
162	1992-04-30	0.340000
163	1995-12-29	0.530000
164	2021-08-27	1.601000
165	1988-06-30	0.410000
166	1992-09-30	0.550000
167	1983-04-29	0.070000
168	1984-01-31	0.410000
169	1996-10-31	0.380000
170	1988-05-31	0.550000
171	1990-04-30	0.430000
172	1990-08-31	0.610000
173	1992-12-31	0.530000
174	1993-11-30	0.480000
175	1995-10-31	0.460000
176	1987-07-31	0.380000
177	2004-06-29	0.210000
178	2019-08-27	2.676000
179	1988-11-30	0.480000
180	1994-09-30	0.510000
181	1997-04-30	0.400000
182	1998-02-27	9.020000
183	1987-06-30	0.460000
184	1991-08-30	0.060000
185	2023-08-25	0.806000
186	1991-03-28	0.060000
187	1989-09-29	0.050000
188	1994-08-31	0.520000
189	1995-04-28	0.440000
190	1996-03-29	0.520000
191	2025-12-19	0.786000
192	1985-02-28	0.620000
193	1986-09-30	0.390000
194	1995-09-29	0.540000
195	2005-12-19	0.498000
196	1989-10-31	0.500000
197	1992-01-31	4.980000
198	1984-11-30	0.600000
199	1988-04-29	0.030000
200	1992-10-30	0.030000
201	1994-01-31	5.560000
202	2025-08-25	2.700000
203	1991-04-30	0.470000
204	1991-09-30	0.520000
205	1986-11-28	0.040000
206	1993-05-28	0.430000
207	2008-12-16	0.538000
208	1993-02-26	0.460000
209	1995-03-31	0.630000
210	1993-10-29	0.030000
211	1995-05-31	0.590000
212	1997-12-31	3.720000
213	2007-12-17	0.511000

4.2 KiB Raw Blame History

4.2 KiB

Raw Blame History