f/inutx-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

6.1 KiB

Raw Blame History

1	Date	Dividends
2	1990-03-30	0.140000
3	1999-09-30	0.040000
4	2021-06-18	0.235000
5	2008-06-26	0.292000
6	1988-12-29	0.176000
7	1991-06-28	0.112000
8	2000-06-21	0.168000
9	1998-05-29	0.080000
10	1999-01-29	0.096000
11	2001-08-31	0.056000
12	2008-12-17	0.292000
13	1995-05-31	0.080000
14	1995-09-27	0.324000
15	1996-06-27	0.228000
16	1989-09-29	0.116000
17	1990-05-31	0.120000
18	1990-08-31	0.128000
19	2000-09-21	0.156000
20	2003-03-21	0.204000
21	2007-06-25	0.248000
22	1996-05-31	0.076000
23	1997-09-30	0.072000
24	1999-10-29	0.092000
25	1994-01-31	0.112000
26	2017-12-13	3.576000
27	2024-09-20	0.255000
28	1989-03-31	0.348000
29	1990-06-26	0.352000
30	2002-09-20	0.196000
31	1991-06-24	0.336000
32	1999-08-31	0.024000
33	2008-09-25	0.292000
34	2019-06-17	0.268000
35	1994-06-27	0.296000
36	2000-09-29	0.036000
37	2001-10-31	0.056000
38	1996-09-30	0.100000
39	1998-01-30	0.072000
40	1999-02-26	0.048000
41	1995-01-31	0.100000
42	2000-02-29	0.040000
43	2001-12-20	1.344000
44	2004-06-23	0.196000
45	2023-12-13	0.549000
46	1990-06-29	0.116000
47	1991-12-27	0.584000
48	1992-09-30	0.124000
49	1997-03-31	0.084000
50	1999-07-30	0.064000
51	2000-12-20	1.688000
52	2026-06-18	0.236000
53	1990-02-28	0.132000
54	1991-01-31	0.112000
55	1994-03-28	0.316000
56	1994-04-29	0.096000
57	1995-06-27	0.292000
58	1996-12-27	1.132000
59	2001-03-30	0.024000
60	2002-02-28	0.080000
61	1992-03-31	0.104000
62	1992-06-30	0.100000
63	1993-07-30	0.100000
64	2006-06-27	0.180000
65	1996-06-28	0.072000
66	1999-09-22	0.116000
67	2001-06-27	0.136000
68	2022-03-18	0.269000
69	1993-04-30	0.120000
70	1997-12-26	4.244000
71	1999-12-22	3.196000
72	1999-12-31	0.076000
73	2001-09-28	0.088000
74	1995-04-28	0.124000
75	1995-06-30	0.080000
76	1999-11-30	0.088000
77	1995-08-31	0.108000
78	1996-03-29	0.084000
79	1994-08-31	0.060000
80	1994-09-30	0.100000
81	1994-10-31	0.096000
82	2013-06-24	0.280000
83	2019-03-20	0.268000
84	1993-05-28	0.124000
85	2001-11-30	0.064000
86	2005-06-28	0.216000
87	2011-12-16	0.308000
88	2021-09-21	0.256000
89	1991-05-31	0.116000
90	1992-05-29	0.096000
91	1997-02-28	0.088000
92	1997-11-28	0.080000
93	2011-09-23	0.280000
94	2016-06-23	0.336000
95	2016-09-22	0.352000
96	2018-12-13	3.324000
97	2025-12-11	2.424000
98	1992-11-30	0.104000
99	2002-03-28	0.060000
100	2012-03-23	0.236000
101	2001-05-31	0.036000
102	2001-12-31	0.060000
103	2019-12-13	3.620000
104	1991-09-25	0.348000
105	1992-07-31	0.132000
106	1993-06-24	0.364000
107	1995-03-29	0.292000
108	1995-09-29	0.104000
109	2000-10-31	0.052000
110	2000-12-29	0.068000
111	2006-12-20	0.248000
112	2015-12-14	1.088000
113	1989-06-30	0.344000
114	1990-12-27	0.572000
115	1994-07-29	0.112000
116	2010-09-22	0.300000
117	1993-12-31	0.108000
118	1997-06-27	0.252000
119	1999-06-23	0.212000
120	1998-12-31	0.072000
121	2017-03-22	0.340000
122	1990-09-25	0.372000
123	1991-07-31	0.116000
124	1995-03-31	0.112000
125	1997-06-30	0.080000
126	1998-03-31	0.076000
127	2000-08-31	0.052000
128	2002-03-21	0.176000
129	2007-09-24	0.256000
130	1990-12-31	0.128000
131	1992-04-30	0.096000
132	1996-10-31	0.056000
133	1996-11-29	0.072000
134	2013-12-17	2.276000
135	2018-06-21	0.320000
136	2015-09-22	0.324000
137	2024-06-21	0.268000
138	1991-02-28	0.104000
139	1998-06-30	0.088000
140	2001-03-27	0.108000
141	2007-03-26	0.248000
142	1994-06-30	0.100000
143	1994-12-29	1.024000
144	2004-03-23	0.216000
145	2017-06-21	0.344000
146	1990-04-30	0.116000
147	2001-01-31	0.028000
148	2010-06-21	0.240000
149	1997-05-30	0.084000
150	2009-06-24	0.292000
151	2009-09-24	0.292000
152	2025-03-20	0.258000
153	1988-10-31	0.056000
154	1992-03-27	0.308000
155	1994-03-31	0.108000
156	1997-01-31	0.076000
157	1999-03-24	0.200000
158	2015-06-22	0.312000
159	1988-08-31	0.124000
160	1993-03-26	0.232000
161	1993-10-29	0.108000
162	2001-07-31	0.048000
163	2020-06-17	0.292000
164	2022-09-21	0.256000
165	1990-01-31	0.144000
166	1994-11-30	0.096000
167	2001-06-29	0.052000
168	2003-06-20	0.204000
169	2011-06-23	0.288000
170	2014-06-24	0.288000
171	2016-03-23	0.320000
172	2020-09-22	0.285000
173	1990-09-28	0.124000
174	1993-02-26	0.076000
175	1999-04-30	0.100000
176	1998-04-30	0.076000
177	2000-01-31	0.056000
178	2000-06-30	0.052000
179	2004-09-23	0.216000
180	2006-03-29	0.216000
181	1988-09-30	0.176000
182	1990-07-31	0.128000
183	1995-10-31	0.096000
184	2014-09-24	0.284000
185	2014-12-16	5.648000
186	2021-03-18	0.244000
187	1994-02-28	0.100000
188	1996-09-26	0.196000
189	1997-07-31	0.120000
190	2008-03-27	0.268000
191	2010-03-22	0.240000
192	2017-09-21	0.344000
193	2019-09-20	0.296000
194	1993-03-31	0.092000
195	1996-08-30	0.068000
196	2004-12-22	0.216000
197	2002-05-31	0.080000
198	2012-09-25	0.284000
199	2023-09-21	0.238000
200	2024-03-20	0.244000
201	1992-09-24	0.392000
202	1997-09-26	0.244000
203	2000-03-31	0.072000
204	2000-11-30	0.024000
205	2002-01-31	0.036000
206	1989-12-29	0.132000
207	1997-08-29	0.060000
208	1998-02-27	0.068000
209	2002-06-28	0.060000
210	2003-12-19	0.196000
211	2020-03-20	0.292000
212	2025-09-19	0.260000
213	1991-09-30	0.112000
214	1996-01-31	0.088000
215	1998-09-24	0.220000
216	2016-12-14	0.452000
217	1998-09-30	0.068000
218	2012-12-18	0.592000
219	2013-03-22	0.056000
220	2018-09-21	0.320000
221	1991-03-28	0.112000
222	1997-04-30	0.080000
223	2000-04-28	0.068000
224	2009-12-17	0.288000
225	2012-06-25	0.284000
226	2022-06-21	0.245000
227	1990-03-26	0.416000
228	1992-02-28	0.096000
229	2000-03-23	0.172000
230	1995-12-28	0.300000
231	1998-03-26	0.212000
232	2007-12-17	0.252000
233	1989-10-31	0.132000
234	1993-09-30	0.100000
235	1993-09-24	0.300000
236	1995-11-30	0.092000
237	1997-10-31	0.084000
238	1997-12-31	0.080000
239	2011-03-24	0.284000
240	1991-03-26	0.324000
241	1991-11-29	0.112000
242	1993-06-30	0.116000
243	2002-04-30	0.040000
244	2009-03-25	0.292000
245	2015-03-20	0.300000
246	2018-03-21	0.280000
247	2023-06-21	0.274000
248	1990-11-30	0.124000
249	1991-04-30	0.112000
250	1999-05-28	0.052000
251	1996-03-28	0.252000
252	2001-04-30	0.056000
253	2022-12-13	1.954000
254	2025-06-20	0.285000
255	2026-03-19	0.258000
256	1992-12-31	0.108000
257	2002-12-20	0.136000
258	2005-09-28	0.236000
259	1995-12-29	0.096000
260	1996-02-29	0.080000
261	2005-12-22	0.232000
262	2010-12-16	0.300000
263	1989-11-30	0.128000
264	1993-01-29	0.084000
265	1994-12-30	0.176000
266	1999-06-30	0.064000
267	1992-01-31	0.104000
268	1992-08-31	0.132000
269	1992-12-29	1.064000
270	1988-11-30	0.144000
271	1998-06-25	0.236000
272	2023-03-20	0.260000
273	1998-12-22	2.588000
274	2002-10-31	0.004000
275	1989-08-31	0.120000
276	1990-10-31	0.128000
277	1991-12-31	0.116000
278	1993-12-29	2.100000
279	2020-12-11	0.580000
280	2021-12-14	4.141000
281	2024-12-12	2.223000
282	1995-07-31	0.108000
283	2006-09-27	0.240000
284	2014-03-21	0.280000
285	2005-03-28	0.216000
286	2013-09-24	0.280000
287	1991-08-30	0.116000
288	1993-08-31	0.100000
289	1998-10-30	0.076000
290	1994-09-28	0.268000
291	1996-04-30	0.076000
292	1998-11-30	0.072000
293	2002-06-21	0.188000
294	1996-12-31	0.120000
295	1999-03-31	0.048000
296	2001-02-28	0.056000
297	1989-12-28	0.608000
298	1993-11-30	0.108000
299	1997-03-27	0.276000
300	1998-07-31	0.092000
301	1998-08-31	0.056000
302	2000-05-31	0.056000
303	2001-09-27	0.188000
304	1992-10-30	0.108000
305	1995-02-28	0.092000
306	1996-07-31	0.068000
307	2000-07-31	0.052000
308	2003-09-19	0.196000
309	1991-10-31	0.116000
310	1992-06-25	0.288000
311	1994-05-31	0.100000

6.1 KiB Raw Blame History

6.1 KiB

Raw Blame History