f/ethyx-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

7.3 KiB

Raw Blame History

1	Date	Dividends
2	2008-03-31	0.041000
3	2010-04-30	0.029000
4	2011-03-31	0.038000
5	2011-10-31	0.038000
6	2025-11-28	0.029000
7	2000-01-31	0.055000
8	2002-08-30	0.055000
9	2003-02-28	0.050000
10	2005-02-28	0.044000
11	2006-12-29	0.041000
12	2011-11-30	0.040000
13	2018-01-31	0.029000
14	2021-05-28	0.023000
15	1998-02-27	0.051000
16	2003-01-31	0.055000
17	2012-03-30	0.036000
18	2013-02-28	0.034000
19	2022-03-31	0.024000
20	2001-01-31	0.055000
21	2005-10-31	0.045000
22	2011-05-31	0.038000
23	2012-04-30	0.036000
24	2013-11-29	0.038000
25	2014-02-28	0.034000
26	2026-02-27	0.030000
27	2005-11-30	0.044000
28	2010-07-30	0.041000
29	2001-02-28	0.050000
30	2006-05-31	0.041000
31	2013-05-31	0.036000
32	2015-07-31	0.032000
33	2016-04-29	0.029000
34	2022-05-31	0.025000
35	1996-06-28	0.059000
36	1996-11-29	0.057000
37	2025-07-31	0.029000
38	2011-01-31	0.042000
39	2014-01-31	0.037000
40	2019-04-30	0.031000
41	2026-03-31	0.030000
42	2001-06-29	0.053000
43	2002-03-28	0.054000
44	2007-10-31	0.041000
45	2023-10-31	0.028000
46	2008-11-28	0.041000
47	2012-09-28	0.035000
48	2013-07-31	0.035000
49	2017-08-31	0.028000
50	2025-05-30	0.029000
51	1996-10-31	0.059000
52	2008-08-29	0.042000
53	2006-08-31	0.041000
54	2007-05-31	0.041000
55	2010-08-31	0.039000
56	2010-12-31	0.047000
57	2014-06-30	0.032000
58	2017-05-31	0.028000
59	1997-12-31	0.058000
60	2005-09-30	0.046000
61	2023-05-31	0.027000
62	2018-11-30	0.028000
63	2021-01-29	0.026000
64	2022-04-29	0.025000
65	2023-09-29	0.028000
66	2014-11-28	0.033000
67	2017-09-29	0.028000
68	2025-02-28	0.029000
69	1998-04-30	0.055000
70	2009-01-30	0.043000
71	2015-05-29	0.029000
72	2020-01-31	0.027000
73	2024-03-28	0.028000
74	2025-04-30	0.030000
75	1996-07-31	0.060000
76	2008-01-31	0.041000
77	1998-07-31	0.057000
78	1999-07-30	0.055000
79	2000-12-29	0.055000
80	2003-05-30	0.055000
81	2006-07-31	0.041000
82	2014-05-30	0.033000
83	1997-08-29	0.058000
84	1997-09-30	0.056000
85	2022-10-31	0.026000
86	2010-11-30	0.039000
87	2012-10-31	0.035000
88	2022-11-30	0.027000
89	2023-02-28	0.028000
90	2005-08-31	0.047000
91	2006-02-28	0.040000
92	2002-01-31	0.054000
93	2020-03-31	0.026000
94	2018-06-29	0.028000
95	2019-05-31	0.031000
96	2021-07-30	0.023000
97	2000-06-30	0.053000
98	2003-03-31	0.055000
99	2004-06-30	0.052000
100	2008-12-31	0.043000
101	2012-05-31	0.035000
102	2012-12-31	0.035000
103	2019-12-31	0.031000
104	2020-07-31	0.027000
105	2000-03-31	0.055000
106	2002-06-24	0.053000
107	2022-08-31	0.025000
108	2023-01-31	0.027000
109	2001-08-31	0.055000
110	2001-12-31	0.054000
111	2011-09-30	0.037000
112	2011-12-30	0.036000
113	2013-06-28	0.036000
114	2016-02-29	0.031000
115	1995-12-29	0.063000
116	1997-06-30	0.056000
117	2022-12-30	0.027000
118	2024-02-29	0.029000
119	2016-08-31	0.030000
120	2018-02-28	0.029000
121	2009-03-31	0.043000
122	2017-02-28	0.029000
123	2024-07-31	0.030000
124	1995-10-31	0.063000
125	2004-08-31	0.054000
126	2003-06-30	0.053000
127	2004-01-30	0.056000
128	2009-04-30	0.040000
129	2012-06-29	0.035000
130	2017-10-31	0.027000
131	2021-08-31	0.023000
132	1999-03-31	0.055000
133	1999-05-28	0.055000
134	2025-01-31	0.028000
135	2003-08-29	0.055000
136	2010-05-28	0.041000
137	2011-02-28	0.039000
138	2015-02-27	0.030000
139	2019-03-29	0.032000
140	1997-01-31	0.058000
141	1999-09-30	0.053000
142	2021-02-26	0.025000
143	2022-09-30	0.026000
144	2006-09-29	0.040000
145	2008-02-29	0.038000
146	2021-11-30	0.023000
147	2024-10-31	0.028000
148	2014-07-31	0.032000
149	2015-03-31	0.030000
150	2001-04-30	0.053000
151	2009-09-30	0.039000
152	2012-02-29	0.037000
153	2016-03-31	0.030000
154	1998-01-30	0.058000
155	1999-11-30	0.053000
156	2017-01-31	0.029000
157	1999-01-29	0.056000
158	2015-09-30	0.029000
159	2018-09-28	0.028000
160	2020-06-30	0.026000
161	1998-10-30	0.056000
162	2018-03-29	0.028000
163	2006-06-30	0.040000
164	2007-06-29	0.040000
165	2013-12-31	0.036000
166	2000-04-28	0.053000
167	2003-09-30	0.053000
168	2014-03-31	0.034000
169	2022-01-31	0.023000
170	2024-04-30	0.028000
171	2026-07-31	0.030000
172	2000-09-29	0.053000
173	2010-01-29	0.040000
174	2005-05-31	0.049000
175	2022-02-28	0.024000
176	2024-01-31	0.028000
177	2002-05-31	0.054000
178	2003-04-30	0.053000
179	2011-08-31	0.038000
180	2016-01-29	0.029000
181	2005-04-29	0.047000
182	2007-11-30	0.040000
183	2006-10-31	0.041000
184	2008-10-31	0.042000
185	2017-12-29	0.027000
186	2024-12-31	0.029000
187	2026-06-30	0.031000
188	1996-01-31	0.061000
189	1998-11-30	0.054000
190	2004-10-29	0.051000
191	2024-11-29	0.029000
192	2003-10-31	0.056000
193	2014-09-30	0.030000
194	2016-05-31	0.029000
195	2023-04-28	0.027000
196	1999-06-30	0.053000
197	2003-07-31	0.055000
198	2006-04-28	0.040000
199	2015-12-31	0.030000
200	1998-03-31	0.057000
201	2001-11-30	0.052000
202	1999-08-31	0.055000
203	2004-03-31	0.056000
204	2009-07-31	0.040000
205	2012-01-31	0.036000
206	2015-08-31	0.029000
207	2024-06-28	0.030000
208	1996-04-30	0.059000
209	1998-05-29	0.057000
210	2025-08-29	0.030000
211	2002-12-31	0.055000
212	2004-02-27	0.053000
213	2004-11-30	0.050000
214	2012-08-31	0.038000
215	2015-01-30	0.030000
216	2023-06-30	0.027000
217	2001-07-31	0.055000
218	2002-07-31	0.055000
219	2023-08-31	0.028000
220	2025-03-31	0.029000
221	2007-08-31	0.041000
222	2007-12-31	0.041000
223	2008-06-30	0.040000
224	2012-11-30	0.034000
225	2015-11-30	0.038000
226	2017-11-30	0.027000
227	2005-12-30	0.044000
228	2007-01-31	0.041000
229	2024-08-30	0.029000
230	2026-05-29	0.030000
231	2019-10-31	0.030000
232	2009-06-30	0.039000
233	2018-08-31	0.027000
234	2019-01-31	0.029000
235	2019-09-30	0.030000
236	1997-05-30	0.058000
237	2005-01-31	0.050000
238	2006-03-31	0.044000
239	2008-09-30	0.041000
240	2014-08-29	0.030000
241	2020-08-31	0.026000
242	2024-05-31	0.028000
243	2001-05-31	0.055000
244	2002-02-28	0.048000
245	2002-10-22	0.045000
246	2003-12-31	0.057000
247	2004-05-28	0.054000
248	2018-04-30	0.027000
249	1995-11-30	0.061000
250	1997-11-28	0.056000
251	2007-04-30	0.040000
252	2012-07-31	0.035000
253	2013-08-30	0.036000
254	2016-09-30	0.028000
255	1996-02-29	0.057000
256	2002-09-30	0.053000
257	2020-04-30	0.026000
258	2025-12-31	0.030000
259	1997-02-28	0.053000
260	2010-10-29	0.039000
261	2018-07-31	0.029000
262	2022-07-29	0.026000
263	2026-04-30	0.030000
264	1998-09-30	0.054000
265	2000-05-31	0.055000
266	2010-02-26	0.036000
267	2014-10-31	0.030000
268	2015-04-30	0.030000
269	2016-06-30	0.030000
270	2018-12-31	0.027000
271	2019-11-29	0.031000
272	1996-08-30	0.060000
273	2003-11-28	0.055000
274	2021-09-30	0.023000
275	2008-05-30	0.041000
276	2013-01-31	0.034000
277	2017-04-28	0.028000
278	2023-12-29	0.028000
279	2025-10-31	0.030000
280	1998-06-30	0.055000
281	2005-07-29	0.047000
282	2009-12-31	0.040000
283	2018-05-31	0.028000
284	2009-02-27	0.039000
285	2010-03-31	0.040000
286	2005-06-30	0.046000
287	2006-01-31	0.044000
288	2000-07-31	0.055000
289	2007-03-30	0.041000
290	2008-04-30	0.039000
291	2011-06-30	0.038000
292	2015-06-30	0.030000
293	2016-10-31	0.028000
294	1996-12-31	0.059000
295	1997-03-31	0.058000
296	2020-12-31	0.027000
297	2019-02-28	0.032000
298	2020-11-30	0.026000
299	2019-06-28	0.031000
300	2024-09-30	0.029000
301	2026-01-30	0.031000
302	2002-11-29	0.053000
303	2013-04-30	0.034000
304	2009-10-30	0.040000
305	2016-07-29	0.030000
306	2019-07-31	0.030000
307	2021-10-29	0.023000
308	2022-06-30	0.026000
309	1999-04-30	0.053000
310	2004-07-30	0.054000
311	2011-04-29	0.038000
312	2001-09-28	0.052000
313	2002-04-30	0.052000
314	1998-08-31	0.057000
315	1999-10-29	0.055000
316	1997-07-31	0.058000
317	1999-12-31	0.055000
318	2004-12-31	0.051000
319	2018-10-31	0.027000
320	2020-09-30	0.026000
321	2023-11-30	0.028000
322	1995-09-29	0.093000
323	1996-09-30	0.057000
324	2015-10-30	0.030000
325	2020-02-28	0.028000
326	2025-06-30	0.029000
327	2000-08-31	0.055000
328	2001-10-31	0.054000
329	2004-09-30	0.053000
330	2005-03-31	0.049000
331	2010-06-30	0.040000
332	2016-11-30	0.030000
333	2017-06-30	0.028000
334	2017-07-31	0.028000
335	1997-04-30	0.056000
336	1997-10-31	0.058000
337	2007-09-28	0.040000
338	2009-05-29	0.040000
339	2014-12-31	0.037000
340	2006-11-30	0.040000
341	2007-02-28	0.037000
342	2021-06-30	0.024000
343	2001-03-30	0.055000
344	2013-03-28	0.035000
345	2009-08-31	0.040000
346	2009-11-30	0.039000
347	2021-04-30	0.023000
348	1996-05-31	0.061000
349	2007-07-31	0.041000
350	2008-07-31	0.042000
351	2010-09-30	0.039000
352	2013-09-30	0.035000
353	2023-07-31	0.027000
354	2025-09-30	0.029000
355	1996-03-29	0.059000
356	1999-02-26	0.050000
357	2019-08-30	0.031000
358	2023-03-31	0.028000
359	2004-04-30	0.053000
360	2011-07-29	0.038000
361	2013-10-31	0.035000
362	2014-04-30	0.034000
363	2016-12-30	0.028000
364	2017-03-31	0.028000
365	2000-02-29	0.051000
366	2000-10-31	0.055000
367	2020-05-29	0.026000
368	2021-12-31	0.024000
369	2020-10-30	0.026000
370	2021-03-31	0.024000
371	1998-12-31	0.056000
372	2000-11-30	0.053000

7.3 KiB Raw Blame History

7.3 KiB

Raw Blame History