13F Filings History of CSS LLC/IL

Latest 13F report
Q3 2025 - 13 Nov 2025
Value $
$1,679,724,030
Signature - Title
Mitchel Bialek - CCO
Location
Chicago, IL
Summary
This page shows a list of all the recent 13F filings made by CSS LLC/IL. Form 13F is required to be filed within 45 days of the end of a calendar quarter. CSS LLC/IL reported 691 stock holdings with total value $1,679,724,030 as of Q3 2025. Top holdings included STRIDE INC, IONIS PHARMACEUTICALS INC, LIVE NATION ENTERTAINMENT IN, JAZZ INVESTMENTS I LTD, and LUMENTUM HLDGS INC.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q3 2025 691 $1,679,724,030 +$671,119,064 -$659,495,884 +$11,623,180 STRIDE INC, IONIS PHARMACEUTICALS INC, LIVE NATION ENTERTAINMENT IN, JAZZ INVESTMENTS I LTD, LUMENTUM HLDGS INC 13F-HR 13 Nov 2025, 12:00
Q2 2025 673 $1,581,434,171 +$663,114,080 -$593,639,615 +$69,474,465 STRIDE INC, IONIS PHARMACEUTICALS INC, JAZZ INVESTMENTS I LTD, SHIFT4 PMTS INC, SEAGATE HDD CAYMAN 13F-HR 14 Aug 2025, 15:44
Q1 2025 630 $1,433,875,508 +$407,850,407 -$608,257,046 -$200,406,639 AMERICAN AIRLINES GROUP INC, STRIDE INC, INSMED INC, JAZZ INVESTMENTS I LTD, IONIS PHARMACEUTICALS INC 13F-HR 15 May 2025, 15:55
Q4 2024 639 $1,678,724,402 +$556,662,571 -$641,398,555 -$84,735,984 AXON ENTERPRISE INC, AMERICAN AIRLINES GROUP INC, STRIDE INC, GTLSPRB, PEABODY ENGR CORP 13F-HR 14 Feb 2025, 17:58
Q3 2024 596 $1,718,577,821 +$700,247,874 -$390,048,805 +$310,199,069 AXON ENTERPRISE INC, CCL, AMERICAN AIRLINES GROUP INC, MACOM TECH SOLUTIONS HLDGS I, STRIDE INC 13F-HR 14 Nov 2024, 16:06
Q2 2024 571 $1,357,520,698 +$391,060,453 -$282,357,158 +$108,703,295 ROYAL CARIBBEAN GROUP, AMERICAN AIRLINES GROUP INC, MACOM TECH SOLUTIONS HLDGS I, AXON ENTERPRISE INC, PEABODY ENGR CORP 13F-HR 14 Aug 2024, 13:54
Q1 2024 555 $1,231,303,070 +$346,063,401 -$436,525,002 -$90,461,601 ROYAL CARIBBEAN GROUP, AMERICAN AIRLINES GROUP INC, MACOM TECH SOLUTIONS HLDGS I, PEABODY ENGR CORP, IONIS PHARMACEUTICALS INC 13F-HR 15 May 2024, 14:46
Q4 2023 531 $1,282,059,978 +$359,426,482 -$336,307,049 +$23,119,433 ROYAL CARIBBEAN GROUP, NE, AMERICAN AIRLINES GROUP INC, MACOM TECH SOLUTIONS HLDGS I, PEABODY ENGR CORP 13F-HR 14 Feb 2024, 12:56
Q3 2023 1,085 $1,521,062,523 +$538,215,904 -$605,594,410 -$67,378,506 ROYAL CARIBBEAN GROUP, NE, AMERICAN AIRLINES GROUP INC, CARNIVAL CORP, PEABODY ENGR CORP 13F-HR 14 Nov 2023, 14:06
Q2 2023 1,071 $1,615,807,278 +$553,118,904 -$524,333,318 +$28,785,586 DEXCOM INC, NE, AMERICAN AIRLINES GROUP INC, CARNIVAL CORP, PCGU 13F-HR 14 Aug 2023, 16:00
Q1 2023 710 $1,513,240,035 +$518,930,371 -$235,622,655 +$283,307,716 DEXCOM INC, PCGU, NE, CARNIVAL CORP, MARRIOTT VACATIONS WORLDWIDE 13F-HR 15 May 2023, 15:16
Q4 2022 889 $1,763,559,716 +$589,286,497 -$263,147,845 +$326,138,652 DEXCOM INC, PCGU, CHK, ATLAS AIR WORLDWIDE HLDGS IN, NE 13F-HR 14 Feb 2023, 13:51
Q3 2022 1,007 $2,046,427,984 +$746,461,772 -$259,595,299 +$486,866,473 ANTERO RESOURCES CORP, DEXCOM INC, GFLU, ATLAS AIR WORLDWIDE HLDGS IN, PCGU 13F-HR 14 Nov 2022, 15:21
Q2 2022 1,050 $2,374,424,804 +$829,630,132 -$248,032,235 +$581,597,897 AVGOP, ANTERO RESOURCES CORP, DEXCOM INC, GFLU, PCGU 13F-HR 15 Aug 2022, 14:13
Q1 2022 1,107 $2,676,847,239 +$1,013,487,758 -$501,751,322 +$511,736,436 AVGOP, DEXCOM INC, ANTERO RESOURCES CORP, GFLU, PCGU 13F-HR 16 May 2022, 14:50
Q4 2021 1,188 $2,782,256,305 +$1,221,975,821 -$309,522,554 +$912,453,267 AVGOP, DEXCOM INC, ANTERO RESOURCES CORP, WAYFAIR INC, NEEPRO 13F-HR 14 Feb 2022, 12:04
Q3 2021 932 $1,876,232,000 +$612,435,725 -$613,683,728 -$1,248,003 DEXCOM INC, WAYFAIR INC, NEEPRO, ANTERO RESOURCES CORP, CHEGG INC 13F-HR 15 Nov 2021, 15:27
Q2 2021 831 $1,886,585,000 +$642,117,762 -$653,291,788 -$11,174,026 DEXCOM INC, WAYFAIR INC, CHEGG INC, GFLU, NEEPRO 13F-HR 16 Aug 2021, 16:01
Q1 2021 702 $1,855,218,000 +$941,293,021 -$817,469,951 +$123,823,070 WAYFAIR INC, DEXCOM INC, AAL, CFXA, GFLU 13F-HR 17 May 2021, 13:58
Q4 2020 792 $2,605,107,042 +$1,054,058,816 -$330,320,207 +$723,738,609 MONGODB INC, DEXCOM INC, WAYFAIR INC, DD, PCGU 13F-HR 16 Feb 2021, 13:01
Q3 2020 774 $2,114,711,279 +$1,091,372,655 -$242,013,118 +$849,359,537 DHRPRA, MONGODB INC, ZILLOW GROUP INC, WAYFAIR INC, DEXCOM INC 13F-HR 16 Nov 2020, 12:57
Q2 2020 634 $1,763,384,300 +$895,683,133 -$265,728,123 +$629,955,010 CCIPRA, MONGODB INC, WAYFAIR INC, AAL, CAESARS ENTMT CORP 13F-HR 14 Aug 2020, 14:38
Q1 2020 591 $1,265,133,884 +$587,663,324 -$284,842,724 +$302,820,600 BDXA, CAESARS ENTMT CORP, AAL, MONGODB INC, SOLARCITY CORP 13F-HR 15 May 2020, 15:09
Q4 2019 638 $1,701,458,664 +$627,352,690 -$210,083,977 +$417,268,713 CAESARS ENTMT CORP, AAL, MEDICINES CO, DEXCOM INC, SREPRA 13F-HR 14 Feb 2020, 13:10
Q3 2019 590 $1,555,060,000 +$498,565,413 -$194,188,895 +$304,376,518 CAESARS ENTMT CORP, AAL, DTV, ZIONW, COUPA SOFTWARE INC 13F-HR 14 Nov 2019, 14:39
Q2 2019 812 $1,674,059,174 +$678,307,122 -$438,052,090 +$240,255,032 AABA, AAL, CAESARS ENTMT CORP, ARRAY BIOPHARMA INC, COUPA SOFTWARE INC 13F-HR 14 Aug 2019, 14:58
Q1 2019 519 $1,573,450,554 +$628,673,690 -$296,724,090 +$331,949,600 AAL, AABA, COTY, INTEGRATED DEVICE TECHNOLOGY, CCIPRA 13F-HR 15 May 2019, 14:58
Q4 2018 526 $1,450,730,162 +$481,704,315 -$314,216,444 +$167,487,871 AAL, AABA, MOLINA HEALTHCARE INC, INTEGRATED DEVICE TECHNOLOGY, INSULET CORP 13F-HR 14 Feb 2019, 12:47
Q3 2018 535 $2,259,606,403 +$967,770,807 -$519,537,285 +$448,233,522 FTV, AAL, SQUARE INC, MOLINA HEALTHCARE INC, HESPRA 13F-HR 14 Nov 2018, 14:01
Q2 2018 524 $2,130,626,000 +$719,115,564 -$214,921,657 +$504,193,907 AABA, AAL, ZIONW, STI, MOLINA HEALTHCARE INC 13F-HR 14 Aug 2018, 15:15
Q1 2018 517 $2,006,040,000 +$613,738,967 -$333,935,396 +$279,803,571 AABA, AAL, ZIONW, STI, MICRON TECHNOLOGY INC 13F-HR 15 May 2018, 14:33
Q4 2017 601 $1,936,464,464 +$560,830,214 -$169,711,060 +$391,119,154 AAL, AABA, STIWSB, MICRON TECHNOLOGY INC, TESARO INC 13F-HR 14 Feb 2018, 10:25
Q3 2017 609 $2,042,757,411 +$465,657,702 -$255,722,665 +$209,935,037 AAL, AABA, TESARO INC, ZIONW, STIWSB 13F-HR 14 Nov 2017, 11:26
Q2 2017 624 $2,055,313,472 +$786,496,843 -$194,026,488 +$592,470,355 AAL, TESARO INC, AABA, ZIONW, ANTHEM INC 13F-HR 14 Aug 2017, 15:38
Q1 2017 621 $1,666,744,363 +$511,716,232 -$368,210,913 +$143,505,319 AAL, TESARO INC, YHOO, ZIONW, STIWSB 13F-HR 15 May 2017, 14:29
Q4 2016 689 $1,827,152,367 +$659,864,713 -$580,858,707 +$79,006,006 AAL, TESARO INC, ZIONW, YHOO, STIWSB 13F-HR 14 Feb 2017, 14:29
Q3 2016 713 $2,042,526,545 +$1,055,067,423 -$196,229,435 +$858,837,988 PG, AAL, TESARO INC, YHOO, NUVASIVE INC 13F-HR 14 Nov 2016, 12:56
Q2 2016 689 $1,477,867,460 +$516,374,793 -$198,284,533 +$318,090,260 AAL, CCIPRA, NVIDIA CORP, EXELIXIS INC, TESARO INC 13F-HR 15 Aug 2016, 15:08
Q1 2016 656 $1,609,683,000 +$668,980,297 -$401,615,885 +$267,364,412 AAL, JARDEN CORP, YHOO, HIGWS, JARDEN CORP 13F-HR 16 May 2016, 14:31
Q4 2015 671 $1,682,819,967 +$559,793,006 -$434,005,129 +$125,787,877 AAL, TYFDL, SANDISK CORP, JARDEN CORP, HIGWS 13F-HR 16 Feb 2016, 12:51
Q3 2015 741 $1,696,405,987 +$622,766,045 -$260,691,102 +$362,074,943 AAL, DOW, GEXXXX, MEDICINES CO, HIGWS 13F-HR 16 Nov 2015, 12:39
Q2 2015 739 $2,131,850,561 +$868,336,317 -$275,134,792 +$593,201,525 AAL, OMNICARE INC, DHR, OMNICARE INC, GEXXXX 13F-HR 14 Aug 2015, 13:57
Q1 2015 687 $1,957,182,737 +$725,904,725 -$402,119,583 +$323,785,142 AAL, NEEPRO, HIGWS, MEDIVATION INC, OCRPRB 13F-HR 15 May 2015, 12:14
Q4 2014 786 $2,012,687,000 +$592,973,487 -$235,994,265 +$356,979,222 AAL, HIGWS, CUBIST PHARMACEUTICALS INC, OCRPRB, MICRON TECHNOLOGY INC 13F-HR 17 Feb 2015, 13:19
Q3 2014 741 $2,045,837,000 +$650,843,791 -$508,670,514 +$142,173,277 AAL, MICRON TECHNOLOGY INC, AUXILIUM PHARMACEUTICALS INC, MLU, EQUINIX INC 13F-HR 14 Nov 2014, 11:24
Q2 2014 721 $2,408,033,586 +$1,121,379,762 -$352,529,439 +$768,850,323 AAL, CBS, WY, OCRPRB, CEMEX SAB DE CV 13F-HR 14 Aug 2014, 12:24
Q1 2014 649 $1,983,450,000 +$1,154,945,720 -$206,243,243 +$948,702,477 AAL, GM, GENCORP INC, GT ADVANCED TECHNOLOGIES INC, OCRPRB 13F-HR 15 May 2014, 10:53
Q4 2013 647 $2,058,528,570 $0 GMWSB, GMWSA, VIROPHARMA INC, GENCORP INC, OCRPRB 13F-HR 14 Feb 2014, 09:00