Current Market Value 511,531,027
Current Holdings 4
Most Recent File Date 2025-08-14
Total Filings on Record 50
SEC Form 13F Filing History

This page shows a list of all the recent 13F filings made by Mason Capital Management Llc . Form 13F is required to be filed within 45 days of the end of a calendar quarter. The Form 13F report requires disclosure of the manager that files the report, the name and class of the security, the CUSIP number, the number of shares as of the end of the calendar quarter for which the report is filed, and the total market value. The market value column should not be used as a substitute for Assets Under Management (AUM), as it does not include cash held in accounts.

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File Date Reporting Period Form Amendment Holdings Reported Value
($1000)
2025-08-14 2025-06-30 13F-HR 4 511,531
2025-05-15 2025-03-31 13F-HR 5 427,192
2025-02-14 2024-12-31 13F-HR 4 470,517
2024-11-14 2024-09-30 13F-HR 6 502,601
2024-08-14 2024-06-30 13F-HR 6 538,215
2024-05-15 2024-03-31 13F-HR 6 727,828
2024-02-15 2023-12-31 13F-HR 7 893,880
2023-11-14 2023-09-30 13F-HR 8 1,162,479
2023-08-14 2023-06-30 13F-HR 10 1,026,310
2023-05-15 2023-03-31 13F-HR 12 234,155
2023-02-14 2022-12-31 13F-HR 13 609,223
2022-11-14 2022-09-30 13F-HR 12 257,845
2022-08-15 2022-06-30 13F-HR 17 308,584
2022-05-16 2022-03-31 13F-HR 16 313,340
2022-02-14 2021-12-31 13F-HR 7 208,877
2021-11-15 2021-09-30 13F-HR 37 1,363,770
2021-08-16 2021-06-30 13F-HR 34 1,615,156
2021-05-17 2021-03-31 13F-HR 24 438,341
2021-02-16 2020-12-31 13F-HR 18 1,227,813
2020-12-01 2020-09-30 13F-HR/A 1 R 11 1,137,879
2020-11-13 2020-09-30 13F-HR 8 1,137,633
2020-08-14 2020-06-30 13F-HR 10 1,038,645
2020-05-15 2020-03-31 13F-HR 11 314,423
2020-02-14 2019-12-31 13F-HR 8 291,338
2019-11-14 2019-09-30 13F-HR 9 410,266
2019-08-14 2019-06-30 13F-HR 10 523,650
2019-05-15 2019-03-31 13F-HR 8 465,374
2019-02-14 2018-12-31 13F-HR 12 2,646,886
2018-11-15 2018-09-30 13F-HR 19 1,709,080
2018-08-14 2018-06-30 13F-HR 25 2,817,106
2018-05-15 2018-03-31 13F-HR 22 2,180,705
2018-02-14 2017-12-31 13F-HR 19 1,627,888
2017-11-14 2017-09-30 13F-HR 22 3,156,730
2017-08-14 2017-06-30 13F-HR 22 1,528,303
2017-05-15 2017-03-31 13F-HR 19 1,551,152
2017-02-14 2016-12-31 13F-HR 26 1,899,556
2016-11-14 2016-09-30 13F-HR 18 1,176,393
2016-08-15 2016-06-30 13F-HR 18 3,095,433
2016-05-16 2016-03-31 13F-HR 19 3,175,381
2016-02-16 2015-12-31 13F-HR 18 3,008,225
2015-11-16 2015-09-30 13F-HR 19 4,717,081
2015-08-14 2015-06-30 13F-HR 24 5,592,470
2015-05-15 2015-03-31 13F-HR 27 5,949,413
2015-02-17 2014-12-31 13F-HR 22 4,213,153
2014-11-14 2014-09-30 13F-HR 48 9,548,677
2014-08-14 2014-06-30 13F-HR 45 8,399,784
2014-05-15 2014-03-31 13F-HR 27 4,501,308
2014-02-14 2013-12-31 13F-HR 29 5,482,909
2013-11-14 2013-09-30 13F-HR 32 5,298,159
2013-08-14 2013-06-30 13F-HR 30 5,011,900