f/nwqax-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

4.0 KiB

Raw Blame History

1	Date	Dividends
2	2021-09-30	0.078000
3	2022-04-29	0.078000
4	2024-04-30	0.077000
5	2024-09-30	0.077000
6	2013-09-30	0.091000
7	2014-10-31	0.091000
8	2014-11-28	0.091000
9	2015-03-31	0.091000
10	2017-04-28	0.094000
11	2019-03-29	0.090000
12	2010-07-01	0.123000
13	2014-12-31	0.091000
14	2019-07-31	0.090000
15	2020-02-28	0.090000
16	2020-03-31	0.090000
17	2025-03-31	0.080000
18	2026-02-27	0.080000
19	2013-02-28	0.101000
20	2014-07-31	0.091000
21	2016-08-31	0.094000
22	2017-06-30	0.094000
23	2020-06-30	0.090000
24	2021-10-29	0.078000
25	2023-09-29	0.082000
26	2012-09-04	0.101000
27	2014-09-30	0.091000
28	2016-05-31	0.094000
29	2018-09-28	0.090000
30	2018-10-31	0.090000
31	2020-12-31	0.078000
32	2022-11-30	0.082000
33	2025-01-31	0.077000
34	2011-09-01	0.101000
35	2012-05-01	0.101000
36	2012-12-31	0.101000
37	2016-01-29	0.094000
38	2017-11-30	0.094000
39	2017-12-28	0.063000
40	2018-03-29	0.094000
41	2021-07-30	0.078000
42	2023-08-31	0.082000
43	2012-07-02	0.101000
44	2016-11-30	0.094000
45	2017-12-29	0.094000
46	2020-07-31	0.090000
47	2022-12-29	0.219000
48	2024-01-31	0.082000
49	2013-07-31	0.097000
50	2015-12-31	0.094000
51	2017-03-31	0.094000
52	2019-01-31	0.090000
53	2021-03-31	0.078000
54	2022-06-30	0.078000
55	2011-03-01	0.123000
56	2014-04-30	0.091000
57	2014-08-29	0.091000
58	2015-05-29	0.094000
59	2020-11-30	0.078000
60	2012-03-01	0.101000
61	2013-06-28	0.097000
62	2018-12-31	0.090000
63	2024-06-28	0.077000
64	2026-05-29	0.080000
65	2026-06-30	0.080000
66	2010-10-01	0.123000
67	2011-05-03	0.123000
68	2011-12-01	0.101000
69	2019-08-30	0.090000
70	2019-11-29	0.090000
71	2025-12-31	0.080000
72	2026-04-30	0.080000
73	2011-07-01	0.123000
74	2012-11-30	0.101000
75	2016-02-29	0.094000
76	2017-09-29	0.094000
77	2020-05-29	0.090000
78	2021-02-26	0.078000
79	2022-03-31	0.078000
80	2022-07-29	0.078000
81	2010-06-01	0.123000
82	2014-02-28	0.091000
83	2017-10-31	0.094000
84	2023-03-31	0.082000
85	2015-10-30	0.094000
86	2016-03-31	0.094000
87	2020-04-30	0.090000
88	2010-09-01	0.123000
89	2011-10-03	0.101000
90	2013-03-28	0.101000
91	2016-09-30	0.094000
92	2018-01-31	0.094000
93	2019-12-31	0.090000
94	2022-05-31	0.078000
95	2024-05-31	0.077000
96	2026-01-30	0.080000
97	2026-07-31	0.080000
98	2016-04-29	0.094000
99	2016-10-31	0.094000
100	2012-04-02	0.101000
101	2012-06-01	0.101000
102	2018-02-28	0.094000
103	2019-02-28	0.090000
104	2020-09-30	0.078000
105	2022-10-31	0.078000
106	2024-03-28	0.077000
107	2025-06-30	0.080000
108	2022-09-30	0.078000
109	2024-11-29	0.077000
110	2025-11-28	0.080000
111	2012-01-03	0.101000
112	2012-12-14	0.825000
113	2013-12-31	0.091000
114	2017-05-31	0.094000
115	2019-06-28	0.090000
116	2021-11-30	0.078000
117	2022-08-31	0.078000
118	2024-02-29	0.077000
119	2024-10-31	0.077000
120	2011-11-01	0.101000
121	2015-04-30	0.091000
122	2015-09-30	0.094000
123	2015-11-30	0.094000
124	2016-12-30	0.094000
125	2023-05-31	0.082000
126	2014-06-30	0.091000
127	2017-01-31	0.094000
128	2018-05-31	0.094000
129	2018-06-29	0.094000
130	2018-08-31	0.090000
131	2019-05-31	0.090000
132	2021-01-29	0.078000
133	2023-07-31	0.082000
134	2023-12-29	0.082000
135	2025-05-30	0.080000
136	2025-12-30	0.111000
137	2010-11-01	0.123000
138	2011-06-01	0.123000
139	2015-02-27	0.091000
140	2017-02-28	0.094000
141	2019-04-30	0.090000
142	2020-01-31	0.090000
143	2010-03-31	0.123000
144	2011-02-01	0.123000
145	2015-06-30	0.094000
146	2015-07-31	0.094000
147	2018-12-28	0.081000
148	2019-09-30	0.090000
149	2020-12-30	0.009000
150	2021-08-31	0.078000
151	2022-12-30	0.082000
152	2023-06-30	0.082000
153	2013-08-30	0.091000
154	2025-02-28	0.080000
155	2025-09-30	0.080000
156	2010-05-03	0.123000
157	2011-01-03	0.123000
158	2011-04-01	0.123000
159	2017-07-31	0.094000
160	2018-07-31	0.094000
161	2020-10-30	0.078000
162	2010-08-02	0.123000
163	2016-07-29	0.094000
164	2019-12-30	0.139000
165	2021-04-30	0.078000
166	2021-05-28	0.078000
167	2021-06-30	0.078000
168	2025-08-29	0.080000
169	2026-03-31	0.080000
170	2012-02-01	0.101000
171	2014-03-31	0.091000
172	2017-08-31	0.094000
173	2018-11-30	0.090000
174	2023-04-28	0.082000
175	2025-04-30	0.080000
176	2015-01-30	0.091000
177	2011-08-01	0.101000
178	2013-01-31	0.101000
179	2013-05-31	0.097000
180	2014-05-30	0.091000
181	2020-08-31	0.078000
182	2022-01-31	0.078000
183	2023-01-31	0.082000
184	2023-02-28	0.082000
185	2023-10-31	0.082000
186	2024-07-31	0.077000
187	2013-04-30	0.101000
188	2016-06-30	0.094000
189	2021-12-30	0.046000
190	2022-02-28	0.078000
191	2024-08-30	0.077000
192	2024-12-31	0.077000
193	2025-07-31	0.080000
194	2010-12-01	0.123000
195	2012-08-01	0.101000
196	2015-08-31	0.094000
197	2018-04-30	0.094000
198	2019-10-31	0.090000
199	2021-12-31	0.078000
200	2023-11-30	0.082000
201	2025-10-31	0.080000
202	2013-10-31	0.091000
203	2013-11-29	0.091000
204	2014-01-31	0.091000

4.0 KiB Raw Blame History

4.0 KiB

Raw Blame History