f/muigx-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

2.2 KiB

Raw Blame History

1	Date	Dividends
2	1981-05-19	0.090000
3	1991-03-28	0.070000
4	1992-09-30	0.055000
5	1998-03-31	0.020000
6	2024-06-10	0.049000
7	2019-06-07	0.032000
8	2024-12-19	0.609000
9	2025-09-08	0.040000
10	1991-06-28	0.055000
11	1992-12-31	0.035000
12	1994-03-31	0.040000
13	1997-12-30	2.040000
14	2018-09-10	0.035000
15	2018-12-19	0.065000
16	1994-06-30	0.043000
17	1995-06-30	0.050000
18	1996-09-30	0.035000
19	2016-06-10	0.024000
20	2025-03-10	0.031000
21	1990-12-28	0.065000
22	1992-03-31	0.055000
23	1993-06-30	0.040000
24	1990-06-29	0.080000
25	1996-03-29	0.040000
26	1996-06-28	0.035000
27	2013-09-20	0.034000
28	2026-03-18	0.027000
29	1983-11-21	0.120000
30	1987-11-20	0.280000
31	1997-09-30	0.030000
32	2017-12-18	1.244000
33	2021-03-08	0.008000
34	2009-12-18	0.011000
35	1985-11-22	0.270000
36	2019-03-08	0.020000
37	2022-03-07	0.008000
38	2023-09-11	0.045000
39	2025-06-09	0.040000
40	2003-12-17	0.002000
41	2015-06-12	0.007000
42	2025-12-18	0.783000
43	1999-12-16	2.444000
44	2013-12-18	1.107000
45	2015-09-10	0.005000
46	2020-09-08	0.027000
47	2022-12-21	0.056000
48	2024-03-11	0.033000
49	1993-09-30	0.050000
50	2016-09-12	0.021000
51	1988-09-30	0.030000
52	1992-06-30	0.055000
53	2010-12-27	0.007000
54	2021-12-21	1.060000
55	2023-03-13	0.032000
56	1982-11-19	0.120000
57	1986-11-21	0.300000
58	1995-12-29	0.045000
59	2019-09-09	0.035000
60	2021-09-07	0.022000
61	2023-06-12	0.048000
62	2020-03-09	0.024000
63	1990-03-30	0.020000
64	1997-06-30	0.040000
65	1998-12-16	0.309000
66	2014-12-16	2.490000
67	2016-12-16	0.551000
68	2019-12-11	0.749000
69	1988-06-30	0.050000
70	2000-12-18	3.203000
71	2018-12-18	3.898000
72	2022-06-06	0.029000
73	1987-12-31	0.020000
74	2012-12-19	0.061000
75	2015-12-17	0.523000
76	2020-06-08	0.030000
77	1981-11-20	0.110000
78	1984-11-20	0.200000
79	1988-03-29	0.040000
80	2026-06-17	0.039000
81	2022-12-29	0.003000
82	2007-09-21	0.025000
83	1989-12-29	0.120000
84	1993-12-31	0.050000
85	2024-09-09	0.052000
86	1980-05-20	0.080000
87	1991-09-30	0.060000
88	1994-09-30	0.055000
89	1995-03-31	0.050000
90	1982-05-20	0.110000
91	1996-12-30	0.977000
92	2008-03-20	0.017000
93	2023-12-20	0.070000
94	1980-11-18	0.090000
95	1988-12-30	0.035000
96	2015-03-13	0.006000
97	2017-09-11	0.022000
98	1983-05-25	0.110000
99	1989-09-29	0.060000
100	1989-06-30	0.065000
101	2022-09-12	0.034000
102	1991-12-30	0.035000
103	1997-03-31	0.030000
104	2021-06-07	0.026000
105	1989-03-31	0.040000
106	1994-12-30	0.045000
107	2005-03-24	0.008000
108	1990-09-28	0.090000
109	1993-03-31	0.040000
110	1995-09-29	0.055000
111	2004-12-28	0.014000
112	2008-12-19	0.009000
113	2009-09-18	0.008000
114	2020-12-21	0.253000

2.2 KiB Raw Blame History

2.2 KiB

Raw Blame History