Compass Therapeutics, Inc. (CMPX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

168,782,000Shares Outstanding

170,528,509Shares held by institutions

$1,111,845,879Value of institutional holdings

101.03%Institutional ownership %

15.97%Shares Changed QoQ

167No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Compass Therapeutics, Inc. (NASDAQ:CMPX) has 167 institutional investors that have filed 13F reports for the period ending December 2025.

They owned 99.8% of outstanding stock in December 2025, up from 90.8% the prior quarter.
Their total shares held in CMPX increased 14.85% quarter over quarter, and separately, investors owning Compass Therapeutics increased 81.52% from a year ago.
Of these 167 holders, 115 added to their stakes in Compass Therapeutics, 35 trimmed positions, and 17 made no changes.
Altogether, these fund groups held 168.44Mn shares in CMPX by December 2025, up by 21.78Mn shares quarter on quarter, and up 66.43Mn shares year over year.
TANG CAPITAL MANAGEMENT LLC holds the largest position in CMPX at 16.79Mn shares as of December 31, 2025, or 9.95% of shares outstanding.
The largest buyers of Compass Therapeutics for the quarter ending December 2025 were Blue Owl Capital Holdings LP (4.34Mn), DEERFIELD MANAGEMENT COMPANY, L.P. (3.61Mn), BVF INC/IL (3.01Mn), BRAIDWELL LP (2.79Mn), Palo Alto Investors LP (2.53Mn).
Top sellers of CMPX stock for the quarter ending December 2025 included Blackstone Inc. (3.71Mn), Jpmorgan Chase & Co (3.13Mn), SILVERARC CAPITAL MANAGEMENT, LLC (1.78Mn), Royal Bank Of Canada (1.7Mn), FMR LLC (1.56Mn).
Per Business Quant data, the top 10 holders of Compass Therapeutics for the quarter ending December 2025 are TANG CAPITAL MANAGEMENT LLC (16.79Mn), ORBIMED ADVISORS LLC (15.22Mn), SUVRETTA CAPITAL MANAGEMENT, LLC (14.18Mn), Vivo Capital, LLC (9.55Mn), BlackRock, Inc. (9.39Mn), VANGUARD GROUP INC (8.05Mn), Enavate Sciences GP, LLC (7.79Mn), BVF INC/IL (7.76Mn), Blue Owl Capital Holdings LP (6.93Mn), Blackstone Inc. (6.13Mn).

167 Institutional Holders

170,528,509 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
TANG CAPITAL MANAGEMENT LLC	31 Dec, 2025	16,790,809	-21,154	-0.13%	$90,166,644.00
ORBIMED ADVISORS LLC	31 Dec, 2025	15,219,994	0	0.00%	$81,731,368.00
SUVRETTA CAPITAL MANAGEMENT, LLC	31 Dec, 2025	14,182,379	81,220	0.58%	$76,159,375.00
Vivo Capital, LLC	31 Dec, 2025	9,545,466	0	0.00%	$51,259,152.00
BlackRock, Inc.	31 Dec, 2025	9,388,624	2,017,877	27.38%	$50,416,912.00
VANGUARD GROUP INC	31 Dec, 2025	8,048,374	985,575	13.95%	$43,219,768.00
Enavate Sciences GP, LLC	31 Dec, 2025	7,788,150	0	0.00%	$41,822,366.00
BVF INC/IL	31 Dec, 2025	7,764,842	3,014,842	63.47%	$41,697,202.00
Blue Owl Capital Holdings LP	31 Dec, 2025	6,933,050	4,341,525	167.53%	$37,230,478.00
Blackstone Inc.	31 Dec, 2025	6,126,182	-3,713,926	-37.74%	$32,897,597.00
State Street Corp	31 Dec, 2025	4,890,525	1,784,012	57.43%	$26,262,119.00
ADAGE CAPITAL PARTNERS GP, L.L.C.	31 Dec, 2025	4,436,500	-750,000	-14.46%	$23,824,005.00
Rock Springs Capital Management LP	31 Dec, 2025	3,927,202	-547,500	-12.24%	$21,089,075.00
DEERFIELD MANAGEMENT COMPANY, L.P.	31 Dec, 2025	3,606,000	3,606,000	0.00%	$19,364,220.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	3,502,526	558,057	18.95%	$18,813,341.00
Sofinnova Investments, Inc.	31 Dec, 2025	3,365,446	1,336,560	65.88%	$18,072,445.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	3,109,286	-128,286	-3.96%	$16,696,866.00
Goldman Sachs Group Inc	31 Dec, 2025	3,034,830	1,995,159	191.90%	$16,297,038.00
BRAIDWELL LP	31 Dec, 2025	2,786,778	2,786,778	0.00%	$14,964,998.00
FMR LLC	31 Dec, 2025	2,579,711	-1,557,851	-37.65%	$13,853,048.00

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