f/anefx-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

2.5 KiB

Raw Blame History

1	Date	Dividends
2	2005-11-18	0.036000
3	2007-02-20	0.036000
4	2003-07-18	0.038000
5	2008-06-20	0.036000
6	2011-12-21	0.117000
7	2019-12-18	3.356000
8	1991-12-13	0.095000
9	1999-06-18	0.040000
10	1986-12-04	0.190000
11	2008-09-19	0.036000
12	2009-02-19	0.036000
13	2021-12-15	4.672000
14	2004-06-18	0.037000
15	2008-12-19	0.037000
16	1992-12-01	0.040000
17	1998-12-22	2.640000
18	2003-09-19	0.037000
19	2004-02-19	0.038000
20	2005-10-20	0.036000
21	2009-01-20	0.037000
22	2015-12-22	2.216000
23	2005-06-17	0.036000
24	2025-12-16	7.214000
25	2008-11-20	0.036000
26	2017-12-22	3.697000
27	2018-12-19	3.883000
28	1996-05-17	0.050000
29	2004-04-19	0.037000
30	2005-02-18	0.037000
31	1987-07-16	0.050000
32	1995-05-26	0.050000
33	1996-12-13	1.220000
34	2005-03-18	0.036000
35	2013-12-26	2.526000
36	1995-12-18	0.140000
37	2003-03-19	0.040000
38	2004-10-19	0.037000
39	2005-01-21	0.037000
40	2008-05-20	0.035000
41	2009-11-19	0.037000
42	2020-12-16	1.470000
43	1989-06-02	0.050000
44	2000-12-14	2.925000
45	2003-05-19	0.040000
46	2006-07-20	0.036000
47	2007-11-19	0.035000
48	1991-05-31	0.050000
49	2004-07-19	0.037000
50	2005-07-18	0.036000
51	2007-05-18	0.036000
52	1997-12-15	1.800000
53	2006-01-19	0.037000
54	2014-12-26	3.225000
55	1988-12-09	0.185000
56	1990-12-14	0.210000
57	2003-06-19	0.038000
58	2004-11-19	0.037000
59	2007-12-20	0.036000
60	2010-12-28	0.173000
61	2024-12-17	5.862000
62	1997-05-22	0.050000
63	2003-10-17	0.037000
64	2006-02-21	0.036000
65	2009-10-20	0.037000
66	2006-05-19	0.036000
67	2009-08-20	0.037000
68	2023-12-13	2.137000
69	2005-08-19	0.036000
70	2009-03-19	0.038000
71	2009-04-20	0.038000
72	1994-12-20	0.130000
73	2003-04-17	0.040000
74	2005-04-20	0.036000
75	2006-06-19	0.036000
76	2006-10-19	0.036000
77	2007-12-26	2.355000
78	2008-01-22	0.036000
79	2008-02-20	0.036000
80	2009-05-20	0.038000
81	2004-03-19	0.037000
82	2006-11-20	0.036000
83	1987-12-11	0.140000
84	2003-08-19	0.037000
85	2004-05-19	0.037000
86	2005-12-16	0.036000
87	2008-08-20	0.036000
88	1992-05-29	0.040000
89	2004-08-19	0.037000
90	2005-09-16	0.036000
91	2007-08-20	0.035000
92	2008-04-21	0.035000
93	2009-07-20	0.037000
94	1988-06-03	0.050000
95	1993-05-14	0.035000
96	1999-12-14	3.320000
97	2007-04-19	0.036000
98	2007-06-19	0.035000
99	2007-10-19	0.035000
100	2009-06-19	0.037000
101	2008-07-21	0.036000
102	1993-12-14	0.075000
103	1994-05-27	0.040000
104	1998-06-05	0.040000
105	2003-12-19	0.038000
106	2006-12-21	0.036000
107	2007-03-19	0.036000
108	2007-09-20	0.035000
109	2008-10-20	0.036000
110	2012-12-27	1.050000
111	2006-03-20	0.036000
112	2007-01-19	0.036000
113	2009-12-21	0.037000
114	2004-09-17	0.037000
115	2004-12-17	0.037000
116	2005-05-20	0.036000
117	2006-08-18	0.036000
118	2006-09-20	0.036000
119	1989-12-08	0.240000
120	2004-01-16	0.038000
121	2008-03-20	0.035000
122	1990-06-01	0.050000
123	2003-11-19	0.037000
124	2006-04-20	0.036000
125	2007-07-19	0.035000
126	2009-09-21	0.037000
127	2016-12-23	0.804000

2.5 KiB Raw Blame History

2.5 KiB

Raw Blame History