f/comax-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

3.6 KiB

Raw Blame History

1	Date	Dividends
2	1988-08-12	0.035000
3	1990-04-10	0.035000
4	1991-10-03	0.035000
5	1993-08-03	0.035000
6	1997-04-02	0.090000
7	1984-08-20	0.045000
8	1988-01-12	0.035000
9	1988-09-09	0.035000
10	1989-12-13	0.170000
11	2002-06-28	0.049000
12	1984-11-15	0.045000
13	1988-07-12	0.035000
14	1992-08-04	0.035000
15	1995-04-10	0.035000
16	1994-08-02	0.035000
17	2018-03-22	0.100000
18	2022-12-19	0.006000
19	1984-12-17	0.045000
20	1985-07-18	0.045000
21	1988-12-30	0.035000
22	1990-07-10	0.035000
23	1994-05-03	0.035000
24	1989-06-09	0.035000
25	1991-06-04	0.035000
26	1992-06-03	0.035000
27	2014-03-24	0.089000
28	1989-11-10	0.035000
29	1993-05-04	0.035000
30	1995-12-22	0.101000
31	1988-03-10	0.035000
32	1990-02-09	0.035000
33	1987-03-17	0.035000
34	1987-08-17	0.035000
35	1992-05-05	0.035000
36	1997-10-02	0.090000
37	1993-06-02	0.035000
38	1993-12-29	0.035000
39	1998-10-02	0.035000
40	1999-07-02	0.055000
41	1990-03-09	0.035000
42	1993-11-02	0.035000
43	1994-07-05	0.035000
44	1995-02-10	0.035000
45	1997-07-02	0.490000
46	2017-12-19	0.413000
47	1984-05-17	0.045000
48	1985-08-19	0.045000
49	1985-12-17	0.045000
50	1987-01-16	0.035000
51	1993-12-06	0.035000
52	1988-04-12	0.035000
53	1991-08-02	0.035000
54	1995-10-10	0.090000
55	1987-04-16	0.035000
56	1987-05-15	0.035000
57	1990-10-10	0.035000
58	1991-02-05	0.035000
59	2026-06-23	0.422000
60	1990-08-10	0.035000
61	1990-11-09	0.035000
62	1991-07-03	0.035000
63	1985-02-14	0.045000
64	1985-11-15	0.045000
65	1989-08-10	0.035000
66	1989-12-29	0.035000
67	1990-06-12	0.035000
68	1995-05-10	0.035000
69	1999-10-04	0.135000
70	1988-11-10	0.035000
71	1989-05-10	0.035000
72	2021-12-17	2.606000
73	1988-06-10	0.035000
74	1993-02-02	0.035000
75	1992-02-04	0.035000
76	1998-07-02	0.320000
77	2009-12-14	0.254000
78	1986-04-17	0.045000
79	1987-10-16	0.035000
80	1988-02-10	0.035000
81	1990-05-10	0.035000
82	1991-11-05	0.035000
83	1988-05-10	0.035000
84	1989-07-11	0.035000
85	1992-03-03	0.035000
86	1984-07-18	0.045000
87	1985-01-18	0.045000
88	1986-01-17	0.045000
89	1986-09-17	0.045000
90	1986-10-20	0.045000
91	1993-10-04	0.035000
92	1998-12-08	0.860000
93	2016-12-19	1.014000
94	1986-08-18	0.045000
95	1992-11-04	0.035000
96	1994-09-02	0.035000
97	2016-03-23	0.072000
98	2019-12-18	0.015000
99	1987-02-17	0.035000
100	1992-04-03	0.035000
101	1992-07-06	0.035000
102	1997-12-15	1.230000
103	1984-04-16	0.045000
104	1986-02-14	0.045000
105	1987-11-17	0.035000
106	1991-03-05	0.035000
107	1992-10-05	0.035000
108	1991-05-03	0.035000
109	1993-03-02	0.035000
110	1995-01-09	0.035000
111	1984-06-18	0.045000
112	1985-05-17	0.045000
113	1986-05-16	0.045000
114	1986-12-17	0.045000
115	1988-12-16	0.070000
116	1994-03-09	0.035000
117	2000-07-05	0.020000
118	2014-12-18	0.353000
119	1985-10-18	0.045000
120	1986-06-17	0.045000
121	1986-11-17	0.045000
122	1990-09-11	0.035000
123	1993-09-02	0.035000
124	1985-03-18	0.045000
125	1987-07-17	0.035000
126	1991-04-03	0.035000
127	2002-11-29	0.046000
128	1992-09-03	0.035000
129	1993-07-06	0.035000
130	1996-04-02	0.090000
131	1985-09-17	0.045000
132	1986-07-18	0.045000
133	1987-09-17	0.035000
134	1989-02-10	0.035000
135	1990-12-28	0.035000
136	2012-03-23	0.003000
137	2000-12-08	2.250000
138	1987-12-10	0.035000
139	1992-12-10	0.035000
140	1993-04-02	0.035000
141	1994-02-02	0.035000
142	1996-12-23	0.890000
143	1987-06-17	0.035000
144	1991-09-04	0.035000
145	1994-06-02	0.035000
146	1995-06-12	0.035000
147	2010-12-17	0.185000
148	1994-11-10	0.035000
149	1996-10-02	0.150000
150	1998-04-02	0.090000
151	1984-09-14	0.045000
152	1984-10-15	0.045000
153	1985-06-17	0.045000
154	1988-10-11	0.035000
155	1991-12-30	0.035000
156	1999-12-07	3.860000
157	2008-12-12	0.334000
158	2015-03-24	0.063000
159	2018-12-19	3.573000
160	1994-12-12	0.005000
161	1996-07-02	0.090000
162	2009-03-24	0.002000
163	1986-03-17	0.045000
164	1989-03-10	0.035000
165	1989-04-11	0.035000
166	1989-09-12	0.035000
167	1994-10-10	0.035000
168	2025-05-28	15.000000
169	2025-12-17	0.015000
170	2000-04-04	0.280000
171	2015-12-17	0.306000
172	1985-04-17	0.045000
173	1991-12-16	0.076000
174	1994-04-05	0.035000
175	1995-03-10	0.035000
176	1999-04-07	1.590000
177	1989-10-11	0.035000
178	1992-12-29	0.035000
179	1995-07-10	0.035000
180	2013-12-18	0.239000
181	1990-12-17	0.060000
182	2011-12-19	0.569000
183	2012-12-19	0.420000

3.6 KiB Raw Blame History

3.6 KiB

Raw Blame History