f/cabdx-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

2.4 KiB

Raw Blame History

1	Date	Dividends
2	2013-12-18	0.044000
3	2017-12-15	0.741000
4	1986-10-20	0.035000
5	1989-03-22	0.020000
6	1989-12-20	0.035000
7	1990-03-21	0.020000
8	2001-06-15	0.010000
9	1981-01-09	0.030000
10	1982-07-19	0.030000
11	1982-10-12	0.070000
12	1989-09-22	0.020000
13	1991-03-22	0.020000
14	2002-09-20	0.010000
15	2004-03-25	0.010000
16	1982-04-16	0.030000
17	1986-01-28	0.030000
18	1989-06-22	0.020000
19	1990-09-20	0.020000
20	1996-06-13	0.013000
21	1997-12-18	0.469000
22	1994-09-23	0.013000
23	1998-03-13	0.010000
24	2008-12-22	0.049000
25	2025-12-12	0.390000
26	1985-01-15	0.030000
27	1985-07-17	0.030000
28	1991-12-23	0.015000
29	2003-09-23	0.010000
30	2004-09-23	0.010000
31	2005-03-23	0.010000
32	2019-12-13	0.250000
33	1983-07-18	0.030000
34	1987-07-27	0.030000
35	1998-09-15	0.010000
36	1999-09-15	0.010000
37	2002-03-15	0.010000
38	1985-10-10	0.040000
39	1992-03-24	0.015000
40	1999-12-15	0.182000
41	1987-12-22	0.020000
42	1997-09-15	0.013000
43	2022-12-09	0.469000
44	1987-10-27	0.030000
45	1998-12-18	0.361000
46	1999-03-15	0.010000
47	2001-03-15	0.010000
48	1991-09-23	0.015000
49	1988-03-25	0.020000
50	1984-10-09	0.040000
51	1987-01-27	0.030000
52	1993-03-24	0.015000
53	2003-06-24	0.010000
54	2016-12-16	0.386000
55	2020-12-11	0.068000
56	1987-04-27	0.030000
57	1990-12-21	0.037000
58	1992-12-23	0.015000
59	1993-06-23	0.015000
60	1994-12-15	0.013000
61	1997-06-12	0.013000
62	1984-07-17	0.030000
63	1986-07-25	0.030000
64	1999-06-15	0.010000
65	2018-12-14	0.734000
66	2024-12-13	0.696000
67	1983-10-10	0.030000
68	1984-04-17	0.030000
69	1995-09-26	0.013000
70	1995-12-15	0.013000
71	2001-09-21	0.010000
72	1998-06-16	0.010000
73	2007-12-21	0.451000
74	2010-12-21	0.026000
75	1984-01-16	0.030000
76	1990-06-19	0.020000
77	2005-12-22	0.031000
78	2006-12-14	0.050000
79	1983-01-17	0.030000
80	1996-09-17	0.013000
81	1980-04-08	0.030000
82	1991-06-21	0.020000
83	2002-06-14	0.010000
84	1983-04-18	0.030000
85	2000-06-15	0.010000
86	1980-10-03	0.070000
87	1981-04-16	0.030000
88	1988-06-23	0.020000
89	1993-12-15	0.015000
90	2003-12-22	0.010000
91	2011-12-15	0.042000
92	1992-06-23	0.015000
93	1994-03-23	0.015000
94	1994-06-23	0.013000
95	1996-12-10	0.392000
96	2000-09-15	0.010000
97	2000-12-15	0.247000
98	1981-10-09	0.070000
99	1982-01-18	0.030000
100	1988-12-22	0.020000
101	1995-03-23	0.013000
102	2003-03-25	0.010000
103	2004-12-21	0.010000
104	1981-07-20	0.030000
105	1993-08-25	0.015000
106	2012-12-19	0.033000
107	2023-12-08	0.400000
108	1980-01-08	0.030000
109	1980-07-08	0.030000
110	2001-12-14	0.105000
111	2002-12-27	0.010000
112	2009-12-22	0.035000
113	2014-12-22	0.313000
114	2015-12-18	0.231000
115	1985-04-17	0.030000
116	1988-09-22	0.020000
117	1992-09-24	0.015000
118	1996-03-14	0.013000
119	1997-03-12	0.013000
120	1986-04-24	0.030000
121	1995-06-23	0.013000
122	2000-03-15	0.010000
123	2004-06-24	0.010000
124	2021-12-10	0.670000

2.4 KiB Raw Blame History

2.4 KiB

Raw Blame History