f/mdy-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	1996-09-20	0.153000
3	1998-06-19	0.142000
4	1998-12-18	0.158000
5	2014-06-20	0.779000
6	2025-12-19	2.184000
7	1996-06-21	0.162000
8	2002-06-21	0.179000
9	2005-12-16	0.364000
10	2012-06-15	0.510000
11	2023-12-15	1.891000
12	2024-09-20	1.650000
13	2006-03-17	0.380000
14	2012-12-21	0.816000
15	2018-06-15	1.010000
16	2021-03-19	0.864000
17	2023-09-15	1.555000
18	2024-03-15	1.014000
19	2001-03-16	0.167000
20	2007-09-21	0.351000
21	2013-06-21	0.736000
22	2014-12-19	1.074000
23	2018-03-16	0.861000
24	2022-12-16	1.666000
25	2005-06-17	0.487000
26	2007-12-21	0.447000
27	2011-09-16	0.272000
28	2016-09-16	1.113000
29	2025-03-21	1.308000
30	2004-09-17	0.235000
31	2023-06-16	1.513000
32	2026-06-18	1.702000
33	2024-12-20	2.081000
34	2026-03-20	1.516000
35	1995-06-16	0.095000
36	2003-06-20	0.198000
37	2008-06-20	0.435000
38	2009-12-18	0.488000
39	2010-06-18	0.369000
40	1999-12-20	2.000000
41	2010-09-17	0.283000
42	2022-06-17	1.402000
43	1997-12-19	0.155000
44	2006-09-15	0.340000
45	2018-12-21	1.268000
46	2023-03-17	1.193000
47	1999-03-19	0.175000
48	2007-03-16	0.613000
49	2013-03-15	0.497000
50	1998-12-21	1.500000
51	2002-12-20	0.191000
52	2012-09-21	0.411000
53	2021-09-17	1.310000
54	2014-03-21	0.685000
55	2019-06-21	1.337000
56	2022-09-16	1.828000
57	1998-03-20	0.150000
58	2002-09-20	0.175000
59	2013-12-20	0.710000
60	2019-09-20	1.373000
61	2004-03-19	0.246000
62	2008-09-19	0.437000
63	2015-03-20	0.614000
64	2015-12-18	1.003000
65	2011-12-16	0.529000
66	1995-12-28	0.184000
67	1997-06-20	0.150000
68	2000-09-14	0.202000
69	2001-06-15	0.181000
70	2011-03-18	0.444000
71	2000-06-16	0.207000
72	2003-12-19	0.236000
73	2006-06-16	0.405000
74	2010-12-17	0.456000
75	2021-12-17	1.488000
76	1997-12-24	0.160000
77	2017-03-17	0.823000
78	2024-06-21	1.997000
79	2020-12-18	1.448000
80	1999-09-17	0.170000
81	2011-06-17	0.469000
82	2016-03-18	0.816000
83	2018-09-21	1.056000
84	2020-09-18	1.033000
85	1999-06-18	0.179000
86	2001-09-21	0.171000
87	2004-06-18	0.269000
88	2017-06-16	0.524000
89	2022-03-18	1.152000
90	2009-06-19	0.394000
91	2008-03-20	0.393000
92	2009-09-18	0.389000
93	2016-06-17	0.848000
94	2019-12-20	1.449000
95	2020-03-20	1.110000
96	2003-03-21	0.223000
97	2015-09-18	0.901000
98	2005-03-18	0.231000
99	2012-03-16	0.383000
100	2015-06-19	0.924000
101	2016-12-16	1.165000
102	1996-03-15	0.136000
103	1998-09-18	0.146000
104	2001-12-21	0.196000
105	2002-03-15	0.173000
106	2004-12-17	0.306000
107	1999-12-17	0.185000
108	2000-12-15	0.193000
109	2007-06-15	0.424000
110	2008-12-19	0.555000
111	2017-09-15	1.445000
112	1997-03-21	0.151000
113	2006-12-15	0.599000
114	2009-03-20	0.337000
115	1997-09-19	0.153000
116	2000-03-17	0.179000
117	2003-09-19	0.202000
118	2005-09-16	0.317000
119	2025-09-19	1.619000
120	2019-03-15	0.884000
121	2020-06-19	1.122000
122	2025-06-20	1.803000
123	1996-12-20	0.193000
124	2010-03-19	0.396000
125	2013-09-20	0.662000
126	2014-09-19	0.560000
127	2017-12-15	1.299000

2.5 KiB Raw Blame History

2.5 KiB

Raw Blame History