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The dataset generation failed
Error code:   DatasetGenerationError
Exception:    TypeError
Message:      Couldn't cast array of type double to null
Traceback:    Traceback (most recent call last):
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1779, in _prepare_split_single
                  for key, table in generator:
                                    ^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/packaged_modules/json/json.py", line 295, in _generate_tables
                  self._cast_table(pa_table, json_field_paths=json_field_paths),
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/packaged_modules/json/json.py", line 128, in _cast_table
                  pa_table = table_cast(pa_table, self.info.features.arrow_schema)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2321, in table_cast
                  return cast_table_to_schema(table, schema)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2255, in cast_table_to_schema
                  cast_array_to_feature(
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 1804, in wrapper
                  return pa.chunked_array([func(chunk, *args, **kwargs) for chunk in array.chunks])
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 2095, in cast_array_to_feature
                  return array_cast(
                         ^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 1806, in wrapper
                  return func(array, *args, **kwargs)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/table.py", line 1957, in array_cast
                  raise TypeError(f"Couldn't cast array of type {_short_str(array.type)} to {_short_str(pa_type)}")
              TypeError: Couldn't cast array of type double to null
              
              The above exception was the direct cause of the following exception:
              
              Traceback (most recent call last):
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 1347, in compute_config_parquet_and_info_response
                  parquet_operations = convert_to_parquet(builder)
                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/src/services/worker/src/worker/job_runners/config/parquet_and_info.py", line 980, in convert_to_parquet
                  builder.download_and_prepare(
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 882, in download_and_prepare
                  self._download_and_prepare(
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 943, in _download_and_prepare
                  self._prepare_split(split_generator, **prepare_split_kwargs)
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1646, in _prepare_split
                  for job_id, done, content in self._prepare_split_single(
                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
                File "/usr/local/lib/python3.12/site-packages/datasets/builder.py", line 1832, in _prepare_split_single
                  raise DatasetGenerationError("An error occurred while generating the dataset") from e
              datasets.exceptions.DatasetGenerationError: An error occurred while generating the dataset

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venue
string
ticker
string
title
string
category
string
volume
float64
predicted_price
float64
predicted_price_t24h
null
resolved_outcome
int64
resolved_at
string
kalshi
KXIPOSPACEX-26MAR01
When will SpaceX IPO?
Economics
27,358
1
null
0
2026-03-01 15:04:16.714+00
kalshi
KXIPODISCORD-26MAR01
When will Discord IPO?
Economics
40,080
1
null
0
2026-03-01 15:04:26.712+00
kalshi
KXDATASET13-26MAR01
Will the Department of Justice (DOJ) release Data Set 13 (pursuant to the Epstein Files Transparency Act) before Mar 1, 2026?
Politics
55,997
3
null
0
2026-03-01 16:21:36.714+00
kalshi
KXCABLEAVE-26FEB-26FEB
Will any member of Trump's Cabinet leave before Feb 2026?
Politics
55,603
1
null
0
2026-03-01 16:24:36.725+00
kalshi
KXLUTNICKOUT-26MAR01
Will Howard Lutnick leaves Commerce Secretary in before March?
Politics
10,944
1
null
0
2026-03-01 16:26:16.712+00
kalshi
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Will Keir Starmer leave Prime Minister of the United Kingdom before Mar 1, 2026?
Politics
423,076
1
null
0
2026-03-01 16:27:36.719+00
kalshi
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Will the count of nominations formally received by the US Senate for Kevin Warsh to be Chairman of the Board of Governors of the Federal Reserve be above 0 before March?
Politics
246,079
1
null
0
2026-03-01 16:50:36.714+00
kalshi
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Will the United States acquire any territory not under its sovereignty (as of Issuance) before Mar 1, 2026?
Politics
304,042
1
null
0
2026-03-01 17:04:46.725+00
kalshi
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Politics
74,351
3
null
0
2026-03-01 17:06:06.717+00
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48,437
3
null
0
2026-03-01 17:06:16.718+00
kalshi
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459,552
1
null
0
2026-03-01 17:07:16.752+00
kalshi
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422,122
1
null
0
2026-03-01 17:09:56.731+00
kalshi
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1
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13,828
1
null
0
2026-03-01 21:39:06.713+00
kalshi
KXTRUTHSOCIAL-26FEB28-B109
Will Donald Trump make between 100 and 119 Truth Social posts the week of Feb 22, 2026?
Politics
10,365
1
null
0
2026-03-02 04:57:16.721+00
kalshi
KXTRUTHSOCIAL-26FEB28-B89
Will Donald Trump make between 80 and 99 Truth Social posts the week of Feb 22, 2026?
Politics
17,727
1
null
0
2026-03-02 04:57:16.721+00
kalshi
KXTRUTHSOCIAL-26FEB28-T80
Will Donald Trump make below 80 Truth Social posts the week of Feb 22, 2026?
Politics
12,095
1
null
0
2026-03-02 04:57:16.721+00
kalshi
KXTRUTHSOCIAL-26FEB28-B169
Will Donald Trump make between 160 and 179 Truth Social posts the week of Feb 22, 2026?
Politics
12,641
1
null
0
2026-03-02 04:57:16.721+00
kalshi
KXTRUTHSOCIAL-26FEB28-B129
Will Donald Trump make between 120 and 139 Truth Social posts the week of Feb 22, 2026?
Politics
28,382
1
null
0
2026-03-02 04:57:16.721+00
kalshi
KXTRUTHSOCIAL-26FEB28-B149
Will Donald Trump make between 140 and 159 Truth Social posts the week of Feb 22, 2026?
Politics
22,294
99
null
1
2026-03-02 04:57:16.721+00
kalshi
KXGOVTSHUTLENGTH-26FEB07-G15
Will the US government be shut down for at least 15 days between Feb 7, 2026 and Dec 31, 2026?
Politics
290,483
99
null
1
2026-03-02 06:01:37.035+00
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19,087
98
null
1
2026-03-02 17:27:46.717+00
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Science and Technology
21,435
5
null
0
2026-03-02 18:04:56.715+00
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KXMAINEHOUSE94SPECIAL-26FEB24-SHAR-P27
Will the margin of victory for Scott Harriman in the Maine House of Representatives District 94 special election be between 25% and 30%?
Elections
11,027
1
null
0
2026-03-02 22:28:06.724+00
kalshi
KXMAINEHOUSE94SPECIAL-26FEB24-SHAR-P65
Will the margin of victory for Scott Harriman in the Maine House of Representatives District 94 special election be between 30% and 100%?
Elections
14,140
1
null
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Mentions
44,094
1
null
0
2026-03-03 00:44:36.724+00
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What will AST SpaceMobile, Inc. say during their next earnings call?
Mentions
15,616
99
null
1
2026-03-03 00:44:46.717+00
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What will AST SpaceMobile, Inc. say during their next earnings call?
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17,369
99
null
1
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10,188
99
null
1
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KXEARNINGSMENTIONASTS-26JUN30-ISRA
What will AST SpaceMobile, Inc. say during their next earnings call?
Mentions
37,355
1
null
0
2026-03-03 00:45:26.715+00
kalshi
KXEARNINGSMENTIONASTS-26JUN30-BLAC
What will AST SpaceMobile, Inc. say during their next earnings call?
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17,167
1
null
0
2026-03-03 00:45:36.719+00
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KXSPOTIFYALBUMRELEASEDATEDRAKE-26-MAR01
Will Drake release Iceman before Mar 1, 2026?
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45,236
1
null
0
2026-03-03 14:44:06.72+00
kalshi
KXSPACEXSTARSHIP-12-26FEB28
Will SpaceX launch another Starship by Feb 28, 2026?
Companies
141,622
1
null
0
2026-03-03 15:18:16.722+00
kalshi
KXTRUMPENDORSE-26SEP15-KPAX
Will Donald Trump endorse Ken Paxton in the 2026 Texas Senate Republican primary before Mar 3, 2026?
Elections
39,867
1
null
0
2026-03-03 16:54:26.719+00
kalshi
KXTRUMPENDORSE-26SEP15-JCOR
Will Donald Trump endorse John Cornyn in the 2026 Texas Senate Republican primary before Mar 3, 2026?
Elections
62,956
1
null
0
2026-03-03 16:54:36.717+00
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KXTRUMPENDORSE-26SEP15-WHUN
Will Donald Trump endorse Wesley Hunt in the 2026 Texas Senate Republican primary before Mar 3, 2026?
Elections
12,459
3
null
0
2026-03-03 16:54:46.717+00
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Will average **gas prices** be above or below $3.00 by Dec 31, 2026?
Economics
46,937
99
null
1
2026-03-03 16:55:06.715+00
kalshi
KXCONGRESSMENTION-26MAR31-BIDE
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
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11,722
99
null
1
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What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
66,717
1
null
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2026-03-03 20:15:26.729+00
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KXCONGRESSMENTION-26MAR31-WALZ
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
21,649
1
null
0
2026-03-03 20:15:36.724+00
kalshi
KXCONGRESSMENTION-26MAR31-MASK
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
72,695
99
null
1
2026-03-03 20:15:56.725+00
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KXCONGRESSMENTION-26MAR31-BODY
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91,973
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2026-03-03 20:16:16.727+00
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What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
24,103
99
null
1
2026-03-03 20:16:36.72+00
kalshi
KXCONGRESSMENTION-26MAR31-DEPO
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
12,969
99
null
1
2026-03-03 20:17:06.72+00
kalshi
KXCONGRESSMENTION-26MAR31-FRAU
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
15,818
99
null
1
2026-03-03 20:17:26.726+00
kalshi
KXCONGRESSMENTION-26MAR31-ELEC
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
17,136
99
null
1
2026-03-03 20:17:36.717+00
kalshi
KXCONGRESSMENTION-26MAR31-SANC
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
13,213
99
null
1
2026-03-03 20:17:46.719+00
kalshi
KXCONGRESSMENTION-26MAR31-TERR
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
19,569
99
null
1
2026-03-03 20:18:16.714+00
kalshi
KXCONGRESSMENTION-26MAR31-SHUT
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
12,600
99
null
1
2026-03-03 20:18:36.719+00
kalshi
KXCONGRESSMENTION-26MAR31-RENE
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
51,454
1
null
0
2026-03-03 20:19:46.727+00
kalshi
KXCONGRESSMENTION-26MAR31-HOMA
What will Kristi Noem say during US Senate Committee on the Judiciary: Oversight of the Department of Homeland Security?
Mentions
45,999
1
null
0
2026-03-03 20:19:56.733+00
kalshi
KXAAAGASMAXTX-26DEC31-2.70
Will average **gas prices** be above or below $2.70 by Dec 31, 2026?
Economics
112,674
99
null
1
2026-03-03 20:51:46.711+00
kalshi
KXCONGRESSMENTION-26APR01-EPST
What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
19,104
99
null
1
2026-03-03 22:06:06.715+00
kalshi
KXCONGRESSMENTION-26APR01-TRUM
What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
79,932
1
null
0
2026-03-03 22:06:36.721+00
kalshi
KXCONGRESSMENTION-26APR01-ICE
What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
87,894
1
null
0
2026-03-03 22:06:46.719+00
kalshi
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What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
23,834
1
null
0
2026-03-03 22:06:56.718+00
kalshi
KXCONGRESSMENTION-26APR01-AI
What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
19,119
99
null
1
2026-03-03 22:07:26.734+00
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What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
34,399
1
null
0
2026-03-03 22:07:36.715+00
kalshi
KXCONGRESSMENTION-26APR01-MEXI
What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
47,091
1
null
0
2026-03-03 22:07:46.72+00
kalshi
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What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
19,034
99
null
1
2026-03-03 22:08:06.715+00
kalshi
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What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
19,995
1
null
0
2026-03-03 22:08:16.715+00
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KXCONGRESSMENTION-26APR01-CART
What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
49,040
1
null
0
2026-03-03 22:08:46.72+00
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What will any participating witness say during Lost and Exploited: Confronting Child Trafficking and the Failure to Protect America’s Most Vulnerable?
Mentions
21,900
99
null
1
2026-03-03 22:08:56.767+00
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Mentions
17,776
97
null
1
2026-03-03 22:09:16.718+00
kalshi
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Mentions
27,742
99
null
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24,967
99
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Mentions
11,808
99
null
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2026-03-04 00:11:26.766+00
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11,606
99
null
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23,991
1
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84,068
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KXEARNINGSMENTIONCRWD-26JUN30-HACK
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20,659
1
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0
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19,430
99
null
1
2026-03-04 00:12:56.766+00
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Mentions
38,457
1
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Will any party win a majority of seats in the 2026 Costa Rica Legislative Assembly election?
Elections
16,323
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null
1
2026-03-04 04:42:56.712+00
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null
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2026-03-04 04:43:56.714+00
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Crypto
10,562
71
null
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18,319
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null
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18,390
1
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17,529
1
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0
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22,828
99
null
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KXEARNINGSMENTIONTGT-26JUN30-NETF
What will Target Corporation say during their next earnings call?
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15,923
1
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0
2026-03-04 13:37:56.714+00
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30,864
99
null
1
2026-03-04 13:38:16.718+00
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128,147
99
null
1
2026-03-04 13:38:26.722+00
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82,784
1
null
0
2026-03-04 13:38:36.728+00
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What will Target Corporation say during their next earnings call?
Mentions
15,763
1
null
0
2026-03-04 13:39:06.717+00
kalshi
KXBTCMAXMON-BTC-26MAR31-7000000
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126,351
99
null
1
2026-03-04 14:05:56.765+00
kalshi
KXSTARMERMENTIONB-26APR02-RUSS
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
17,130
1
null
0
2026-03-04 14:44:16.716+00
kalshi
KXSTARMERMENTIONB-26APR02-TRUM
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
10,096
99
null
1
2026-03-04 14:45:06.767+00
kalshi
KXSTARMERMENTIONB-26APR02-IRAN
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
11,890
99
null
1
2026-03-04 14:45:16.712+00
kalshi
KXSTARMERMENTIONB-26APR02-PRIN
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
13,303
1
null
0
2026-03-04 14:45:46.767+00
kalshi
KXSTARMERMENTIONB-26APR02-HEAL
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
10,727
1
null
0
2026-03-04 14:45:46.768+00
kalshi
KXSTARMERMENTIONB-26APR02-NATO
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
17,629
1
null
0
2026-03-04 14:45:46.773+00
kalshi
KXSTARMERMENTIONB-26APR02-EPST
What will Keir Starmer say during next Prime Minister's Questions (UK House of Commons)?
Mentions
10,042
1
null
0
2026-03-04 14:45:46.778+00
kalshi
KXSENATETXD-26-CA
Will Colin Allred be the Democratic nominee for the Senate in Texas?
Elections
139,177
1
null
0
2026-03-04 16:01:00.164+00
kalshi
KXSENATETXD-26-JCRO
Will Jasmine Crockett be the Democratic nominee for the Senate in Texas?
Elections
8,528,627
1
null
0
2026-03-04 16:01:00.164+00
kalshi
KXSENATETXD-26-JC
Will Julián Castro be the Democratic nominee for the Senate in Texas?
Elections
31,756
1
null
0
2026-03-04 16:01:00.164+00
kalshi
KXSENATETXD-26-BOR
Will Beto O'Rourke be the Democratic nominee for the Senate in Texas?
Elections
79,392
1
null
0
2026-03-04 16:01:00.164+00
kalshi
KXSENATETXD-26-JTAL
Will James Talarico be the Democratic nominee for the Senate in Texas?
Elections
5,839,362
99
null
1
2026-03-04 16:01:00.164+00
kalshi
KXBTCMAXMON-BTC-26MAR31-7250000
Will BTC trimmed mean be above $72500.00 by 11:59 PM ET on Mar 31, 2026?
Crypto
96,745
99
null
1
2026-03-04 16:05:46.711+00
kalshi
KXEARNINGSMENTIONANF-26JUN30-INTE
What will Abercrombie & Fitch Company say during their next earnings call?
Mentions
36,904
1
null
0
2026-03-04 16:14:36.719+00
End of preview.

Settled Prediction Markets

Monthly JSONL partitions of every prediction market that settled on Kalshi or Polymarket with meaningful volume (> $10K). Each row: venue, ticker, title, predicted price (final + t-24h), resolved outcome (0/1), resolved timestamp, category. Ideal for calibration analysis and forecasting research.

License and Use

This dataset is released under Creative Commons Attribution 4.0 International (CC-BY-4.0; https://creativecommons.org/licenses/by/4.0/). You may use it freely for personal, research, educational, and commercial purposes — including training, evaluating, and fine-tuning machine-learning models. Attribution is required when the dataset is redistributed in substantially its original form or cited in published work; credit as "SimpleFunctions (simplefunctions.dev)".

Additional terms apply: you may not re-host this dataset, in whole or in substantial part, as an API or service that functionally substitutes for a SimpleFunctions endpoint. See Terms §13.2 at https://simplefunctions.dev/terms.

Provenance, update cadence, and schema are documented below.

Update cadence

Daily at 00:10 UTC (current + previous month refreshed; older months immutable).

Provenance

Source: https://simplefunctions.dev Generator: SimpleFunctions public data pipeline Contact: patrick@simplefunctions.dev

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