f/nefox-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

2.3 KiB

Raw Blame History

1	Date	Dividends
2	1981-03-18	0.080000
3	1981-12-18	0.080000
4	1987-12-15	0.120000
5	1991-09-19	0.080000
6	1989-03-28	0.080000
7	1990-09-11	0.080000
8	2000-08-28	0.456000
9	2006-06-12	0.033000
10	1981-05-29	0.090000
11	1988-05-25	0.080000
12	1997-09-15	2.720000
13	1984-12-14	0.070000
14	1997-12-23	0.210000
15	2014-12-29	2.653000
16	2025-12-30	1.754000
17	1987-05-22	0.100000
18	1990-12-31	0.080000
19	1992-12-22	0.045000
20	1995-12-21	0.034000
21	1982-09-17	0.080000
22	1986-03-14	0.080000
23	1996-09-13	2.160000
24	2014-04-08	0.529000
25	1990-06-26	0.080000
26	2022-04-07	0.359000
27	2022-12-29	3.305000
28	1995-06-23	0.055000
29	1982-03-10	0.080000
30	1985-09-13	0.080000
31	1988-09-16	0.080000
32	1989-12-29	0.090000
33	1992-03-19	0.060000
34	1992-09-24	0.060000
35	1991-03-21	0.080000
36	1991-12-31	0.015000
37	1997-06-23	0.032000
38	1994-12-21	0.030000
39	1996-09-23	0.036000
40	1998-12-23	0.084000
41	2011-12-28	0.084000
42	1999-06-21	0.055000
43	2008-04-14	0.001000
44	1983-05-27	0.070000
45	1984-03-14	0.070000
46	1985-05-29	0.080000
47	1996-06-21	0.033000
48	1996-12-20	0.460000
49	2015-12-29	0.694000
50	2016-04-07	0.427000
51	1980-09-19	0.070000
52	1983-03-09	0.080000
53	1983-09-16	0.050000
54	1993-09-23	0.060000
55	1997-03-25	0.030000
56	2002-10-31	0.049000
57	1999-09-14	0.336000
58	2018-12-28	1.686000
59	2019-04-10	1.050000
60	2023-12-28	0.987000
61	2008-12-19	0.131000
62	2025-04-10	0.497000
63	1984-05-25	0.070000
64	1986-12-15	0.080000
65	1988-12-28	0.100000
66	1993-06-24	0.060000
67	2005-06-13	0.015000
68	1980-03-17	0.080000
69	1980-06-10	0.080000
70	1986-09-15	0.080000
71	1999-12-13	2.323000
72	1987-09-15	0.080000
73	2010-12-27	0.042000
74	2015-04-08	0.060000
75	1982-05-28	0.090000
76	2012-12-26	0.130000
77	2018-04-10	0.420000
78	1995-09-22	0.033000
79	1996-03-22	0.035000
80	1998-09-15	2.030000
81	2009-04-14	0.006000
82	2009-12-17	0.042000
83	2026-04-08	1.308000
84	1984-09-27	0.070000
85	1987-03-16	0.080000
86	2013-12-27	0.772000
87	2011-04-12	0.004000
88	2017-12-28	0.728000
89	1982-12-17	0.080000
90	1989-06-27	0.080000
91	1991-06-20	0.080000
92	1992-06-18	0.060000
93	2002-06-28	0.051000
94	1980-12-12	0.070000
95	1994-06-24	0.060000
96	2010-04-30	0.054000
97	2024-04-10	0.170000
98	1981-09-18	0.070000
99	1988-03-18	0.080000
100	2024-12-30	1.851000
101	1985-12-16	0.080000
102	1993-03-25	0.060000
103	2020-12-30	2.103000
104	1983-12-16	0.060000
105	2017-04-07	0.307000
106	2020-04-08	0.033000
107	2021-04-08	0.071000
108	1986-05-22	0.100000
109	2021-12-30	1.966000
110	1985-03-15	0.070000
111	1989-09-26	0.080000
112	1990-03-27	0.080000
113	2007-06-11	0.045000
114	2007-12-21	0.045000
115	1994-09-26	0.060000
116	2016-12-28	0.354000
117	2019-12-30	1.049000
118	1993-12-22	0.040000
119	1994-03-25	0.060000
120	1995-03-24	0.055000

2.3 KiB Raw Blame History

2.3 KiB

Raw Blame History