Karyopharm Therapeutics Inc. - KPTI

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 2025
13D/13G major owners: Ownership tab.
Methodology: Market value and % of portfolio use SEC reported VALUE ($000). For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received. Details.
Rows: 0
Investor History Status Shares held Market value ($000) % of portfolio Previous % Rank Change in shares % change in shares Source Date reported
Ikarian Capital, LLC History Added to 2,573,435 14,334 1.16% 0.31% 1 +2,028,881 372.58% Q1 2026 May 15, 2026
Commodore Capital LP History New 1,950,000 10,861 0.63% 2 +1,950,000 New Q1 2026 May 15, 2026
RA CAPITAL MANAGEMENT, L.P. History New 1,917,354 10,679 0.11% 3 +1,917,354 New Q1 2026 May 15, 2026
ADAGE CAPITAL PARTNERS GP, L.L.C. History Added to 1,806,322 10,061 0.02% 0.0% 4 +1,385,000 328.73% Q1 2026 May 15, 2026
T. Rowe Price Investment Management, Inc. History Added to 1,542,090 8,590 0.01% 0.0% 5 +956,182 163.2% Q1 2026 May 15, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 1,315,038 7,324 0.0% 0.0% 6 +480,140 57.51% Q1 2026 May 15, 2026
Caption Management, LLC History New 1,181,900 6,583 0.04% 7 +1,181,900 New Q1 2026 May 15, 2026
GOLDMAN SACHS GROUP INC History New 947,579 5,278 0.0% 8 +947,579 New Q1 2026 May 15, 2026
Catalio Capital Management, LP History Added to 897,709 5,000 1.04% 0.19% 9 +754,725 527.84% Q1 2026 May 15, 2026
BOOTHBAY FUND MANAGEMENT, LLC History Added to 750,410 4,179 0.05% 0.02% 10 +605,782 418.86% Q1 2026 May 15, 2026
Squadron Capital Management LLC History New 750,000 4,177 1.53% 11 +750,000 New Q1 2026 May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 739,745 4,120 0.0% 12 +739,745 New Q1 2026 May 15, 2026
VANGUARD GROUP INC History No change 559,619 4,118 0.0% 0.0% 13 0 0.0% Q4 2025 Jan 29, 2026
Avidity Partners Management LP History Added to 463,741 3,853 0.87% 0.29% 14 +329,175 244.62% Q1 2026 May 13, 2026
JANE STREET GROUP, LLC History Added to 593,701 3,306 0.0% 0.0% 15 +502,368 550.04% Q1 2026 May 12, 2026
MILLENNIUM MANAGEMENT LLC History New 511,571 2,849 0.0% 16 +511,571 New Q1 2026 May 15, 2026
CITADEL ADVISORS LLC History Added to 507,500 2,826 0.0% 0.0% 17 +371,991 274.51% Q1 2026 May 15, 2026
Affinity Asset Advisors, LLC History Reduced 500,000 2,785 0.14% 0.37% 18 -389,575 -43.79% Q1 2026 May 14, 2026
Soleus Capital Management, L.P. History No change 440,000 2,450 0.1% 0.12% 19 0 0.0% Q1 2026 May 14, 2026
ADAR1 Capital Management, LLC History Added to 341,936 1,904 0.11% 0.03% 20 +291,936 583.87% Q1 2026 May 15, 2026
GROUP ONE TRADING LLC History Added to 340,227 1,895 0.0% 0.0% 21 +159,308 88.05% Q1 2026 May 13, 2026
Boxer Capital Management, LLC History Added to 302,536 1,685 0.22% 0.41% 22 +50,000 19.8% Q1 2026 May 15, 2026
DAVIDSON KEMPNER CAPITAL MANAGEMENT LP History Reduced 300,000 1,671 0.02% 0.04% 23 -10,020 -3.23% Q1 2026 May 15, 2026
Eversept Partners, LP History New 299,974 1,670 0.09% 24 +299,974 New Q1 2026 May 15, 2026
ACORN CAPITAL ADVISORS, LLC History New 287,826 1,603 0.46% 25 +287,826 New Q1 2026 May 15, 2026
Jump Financial, LLC History Added to 262,146 1,460 0.02% 0.0% 26 +208,330 387.12% Q1 2026 May 14, 2026
Trexquant Investment LP History Added to 257,903 1,436 0.01% 0.0% 27 +216,170 517.98% Q1 2026 May 15, 2026
Ally Bridge Group (NY) LLC History New 250,000 1,392 1.12% 28 +250,000 New Q1 2026 May 15, 2026
ACADIAN ASSET MANAGEMENT LLC History Added to 248,957 1,382 0.0% 0.0% 29 +245,231 6581.62% Q1 2026 May 13, 2026
BlackRock, Inc. History Reduced 244,899 1,364 0.0% 0.0% 30 -2,659 -1.07% Q1 2026 May 13, 2026
DIADEMA PARTNERS LP History New 241,300 1,344 0.23% 31 +241,300 New Q1 2026 May 15, 2026
Brevan Howard Capital Management LP History New 212,367 1,182 0.01% 32 +212,367 New Q1 2026 May 15, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 206,133 1,148 0.0% 0.0% 33 +18,399 9.8% Q1 2026 May 15, 2026
UBS Group AG History Added to 194,017 1,080 0.0% 0.0% 34 +105,562 119.34% Q1 2026 May 05, 2026
BALYASNY ASSET MANAGEMENT L.P. History New 170,748 951 0.0% 35 +170,748 New Q1 2026 May 15, 2026
SILVERBACK ASSET MANAGEMENT LLC History Added to 165,000 919 0.13% 0.04% 36 +125,000 312.5% Q1 2026 May 21, 2026
XTX Topco Ltd History Added to 164,443 915 0.02% 0.0% 37 +152,539 1281.41% Q1 2026 May 15, 2026
SIMPLEX TRADING, LLC History Reduced 156,900 873 0.0% 0.0% 38 -7,768 -4.72% Q1 2026 May 14, 2026
TWO SIGMA INVESTMENTS, LP History Added to 151,232 842 0.0% 0.0% 39 +2,439 1.64% Q1 2026 May 15, 2026
MARSHALL WACE, LLP History No change 128,451 715 0.0% 0.0% 40 0 0.0% Q1 2026 May 14, 2026
TWO SIGMA ADVISERS, LP History No change 89,729 660 0.0% 0.0% 41 0 0.0% Q4 2025 Feb 17, 2026
VANGUARD FIDUCIARY TRUST CO History New 114,934 640 0.0% 42 +114,934 New Q1 2026 May 08, 2026
Engineers Gate Manager LP History New 112,432 626 0.01% 43 +112,432 New Q1 2026 May 15, 2026
RENAISSANCE TECHNOLOGIES LLC History Added to 105,414 587 0.0% 0.0% 44 +45,500 75.94% Q1 2026 May 14, 2026
Tetragon Partners GP Ltd History New 102,984 573 0.11% 45 +102,984 New Q1 2026 May 15, 2026
C WorldWide Group Holding A/S History No change 100,000 557 0.01% 0.01% 46 0 0.0% Q1 2026 May 06, 2026
Birchview Capital, LP History New 83,952 467 0.27% 47 +83,952 New Q1 2026 May 15, 2026
STATE STREET CORP History Added to 80,742 449 0.0% 0.0% 48 +21,800 36.99% Q1 2026 May 15, 2026
Connor, Clark & Lunn Investment Management Ltd. History Added to 79,081 440 0.0% 0.0% 49 +21,869 38.22% Q1 2026 May 11, 2026
BRIDGEWAY CAPITAL MANAGEMENT, LLC History Added to 71,873 400 0.01% 0.01% 50 +6,000 9.11% Q1 2026 May 15, 2026
ROYAL BANK OF CANADA History Added to 60,399 336 0.0% 0.0% 51 +2,399 4.14% Q1 2026 May 15, 2026
DAFNA Capital Management LLC History Reduced 45,800 255 0.06% 0.09% 52 -5,200 -10.2% Q1 2026 May 15, 2026
NORTHERN TRUST CORP History Added to 38,556 214 0.0% 0.0% 53 +9,533 32.85% Q1 2026 May 14, 2026
Zimmer Partners, LP History New 37,500 208 0.01% 54 +37,500 New Q1 2026 May 15, 2026
Centiva Capital, LP History New 33,810 188 0.0% 55 +33,810 New Q1 2026 May 14, 2026
Point72 Asset Management, L.P. History New 30,000 167 0.0% 56 +30,000 New Q1 2026 May 15, 2026
China Universal Asset Management Co., Ltd. History New 30,000 167 0.01% 57 +30,000 New Q1 2026 Apr 27, 2026
Baird Financial Group, Inc. History Added to 29,791 165 0.0% 0.0% 58 +1,798 6.42% Q1 2026 May 14, 2026
Susquehanna Portfolio Strategies, LLC History New 25,021 139 0.0% 59 +25,021 New Q1 2026 May 15, 2026
BANK OF AMERICA CORP /DE/ History Reduced 19,472 108 0.0% 0.0% 60 -28,616 -59.51% Q1 2026 May 15, 2026
OMERS ADMINISTRATION Corp History New 19,400 108 0.0% 61 +19,400 New Q1 2026 May 15, 2026
MORGAN STANLEY History Added to 18,570 103 0.0% 0.0% 62 +9,712 109.64% Q1 2026 May 15, 2026
Invesco Ltd. History New 16,738 93 0.0% 63 +16,738 New Q1 2026 May 12, 2026
Velan Capital Investment Management LP History New 15,000 83 0.05% 64 +15,000 New Q1 2026 May 15, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History New 13,429 74 0.0% 65 +13,429 New Q1 2026 May 15, 2026
HSBC HOLDINGS PLC History New 11,495 65 0.0% 66 +11,495 New Q1 2026 Apr 30, 2026
Bank of New York Mellon Corp History Added to 11,399 63 0.0% 0.0% 67 +312 2.81% Q1 2026 May 05, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History No change 10,886 61 0.0% 0.0% 68 0 0.0% Q1 2026 May 15, 2026
Vanguard Global Advisers, LLC History New 8,207 45 0.0% 69 +8,207 New Q1 2026 May 08, 2026
BARCLAYS PLC History Added to 7,424 41 0.0% 0.0% 70 +3,315 80.68% Q1 2026 May 14, 2026
CITIGROUP INC History Added to 4,941 27 0.0% 71 +4,940 494000.0% Q1 2026 May 11, 2026
TD Waterhouse Canada Inc. History No change 3,203 18 0.0% 0.0% 72 0 0.0% Q1 2026 May 12, 2026
Rockefeller Capital Management L.P. History No change 733 4 0.0% 0.0% 73 0 0.0% Q1 2026 May 14, 2026
FMR LLC History Reduced 665 3 0.0% 0.0% 74 -14 -2.06% Q1 2026 May 15, 2026
Persistent Asset Partners Ltd History Reduced 610 2 0.0% 0.06% 77 -17,706 -96.67% Q1 2026 May 12, 2026
JPMORGAN CHASE & CO History Reduced 471 2 0.0% 0.0% 75 -1,270 -72.95% Q1 2026 May 13, 2026
OSAIC HOLDINGS, INC. History Added to 402 2 0.0% 0.0% 76 +120 42.55% Q1 2026 May 15, 2026
HARBOUR INVESTMENTS, INC. History Added to 285 1 0.0% 78 +200 235.29% Q1 2026 May 15, 2026
Quent Capital, LLC History No change 235 1 0.0% 0.0% 79 0 0.0% Q1 2026 Apr 28, 2026
Opaleye Management Inc. History Closed out 0 0 0.9% -930,000 -100.0% Q1 2026 May 15, 2026
BRAIDWELL LP History Closed out 0 0 0.07% -303,370 -100.0% Q1 2026 May 15, 2026
Exome Asset Management LLC History Closed out 0 0 1.04% -295,541 -100.0% Q1 2026 May 15, 2026
AMERIPRISE FINANCIAL INC History Closed out 0 0 0.0% -276,881 -100.0% Q1 2026 May 15, 2026
Walleye Capital LLC History Closed out 0 0 0.0% -95,672 -100.0% Q1 2026 May 13, 2026
Context Capital Management, LLC History Closed out 0 0 0.01% -62,995 -100.0% Q1 2026 May 07, 2026
Quadrature Capital Ltd History Closed out 0 0 0.0% -59,708 -100.0% Q1 2026 May 15, 2026
PRELUDE CAPITAL MANAGEMENT, LLC History Closed out 0 0 0.02% -28,723 -100.0% Q1 2026 May 15, 2026
TUDOR INVESTMENT CORP ET AL History Closed out 0 0 0.0% -12,922 -100.0% Q1 2026 May 15, 2026
Belvedere Trading LLC History Closed out 0 0 0.0% -12,300 -100.0% Q1 2026 May 12, 2026
Corient Private Wealth LLC History Closed out 0 0 0.0% -10,039 -100.0% Q1 2026 May 15, 2026
Aspect Partners, LLC History Closed out 0 0 0.0% -391 -100.0% Q1 2026 Apr 02, 2026
Advisory Services Network, LLC History New 12 0 +12 New Q1 2026 May 15, 2026
SBI Securities Co., Ltd. History Reduced 67 0 -7 -9.46% Q1 2026 Apr 27, 2026
BNP PARIBAS FINANCIAL MARKETS History Added to 84 0 +2 2.44% Q1 2026 May 12, 2026
PlanVest Financial, Inc History New 1 0 +1 New Q1 2026 May 14, 2026
CIBC Private Wealth Group LLC History No change 3 0 0 0.0% Q4 2025 Feb 12, 2026
Allworth Financial LP History No change 26 0 0 0.0% Q1 2026 May 14, 2026
West Branch Capital LLC History No change 3 0 0 0.0% Q1 2026 Apr 14, 2026
Activest Wealth Management History No change 66 0 0 0.0% Q1 2026 Apr 15, 2026
MB, LEVIS & ASSOCIATES, LLC History No change 100 0 0 0.0% Q1 2026 Apr 07, 2026