Alumis Inc. (ALMS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

104,109,243Shares Outstanding

79,448,585Shares held by institutions

$1,988,200,840Value of institutional holdings

76.31%Institutional ownership %

14.36%Shares Changed QoQ

131No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Alumis Inc. (NASDAQ:ALMS) has 131 institutional investors that have filed 13F reports for the period ending December 2025.

These investors held 75.9% of outstanding shares in December 2025, up from 75.4% in September 2025.
They increased total shares held in Alumis by 13.91% from the prior quarter, while the number of investors in ALMS increased 101.54% year over year.
Of these 131 funds, 76 grew their exposure to Alumis, 34 cut back, and 21 maintained positions.
Institutional investors collectively held 79.02Mn shares in Alumis as of December 2025, up by 9.65Mn shares quarter on quarter, and up 38.68Mn shares year over year.
AyurMaya Capital Management Company, LP is the top holder of Alumis as of December 31, 2025, with 15.14Mn shares representing 14.54% of outstanding stock.
The biggest buyers of Alumis for the quarter ending December 2025 included Saturn V Capital Management LP (3.14Mn), Octagon Capital Advisors LP (2.53Mn), MPM BioImpact LLC (2.4Mn), Cormorant Asset Management, LP (1.49Mn), Samsara BioCapital, LLC (955.61K).
The biggest sellers of Alumis for the quarter ending December 2025 included Trium Capital LLP (2.23Mn), ORBIMED ADVISORS LLC (823.69K), UBS Group AG (648.68K), Bank Of America Corp /De/ (389.49K), CITADEL ADVISORS LLC (219.94K).
Per Business Quant data, the top 10 holders of Alumis for the quarter ending December 2025 are AyurMaya Capital Management Company, LP (15.14Mn), Foresite Capital Management V, LLC (5.78Mn), Samsara BioCapital, LLC (5.76Mn), venBio Partners LLC (4.62Mn), BlackRock, Inc. (4.57Mn), Foresite Capital Management VI LLC (4.25Mn), VANGUARD GROUP INC (4.1Mn), Cormorant Asset Management, LP (3.64Mn), Saturn V Capital Management LP (3.14Mn), Nextech Invest, Ltd. (2.92Mn).

131 Institutional Holders

79,448,585 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
AyurMaya Capital Management Company, LP	31 Dec, 2025	15,139,706	0	0.00%	$147,763,531.00
Foresite Capital Management V, LLC	31 Dec, 2025	5,779,348	0	0.00%	$56,406,436.00
Samsara BioCapital, LLC	31 Dec, 2025	5,756,984	955,614	19.90%	$56,188,164.00
venBio Partners LLC	31 Dec, 2025	4,619,803	0	0.00%	$45,089,277.00
BlackRock, Inc.	31 Dec, 2025	4,566,502	373,425	8.91%	$44,569,059.00
Foresite Capital Management VI LLC	31 Dec, 2025	4,247,670	0	0.00%	$41,457,259.00
VANGUARD GROUP INC	31 Dec, 2025	4,103,290	73,675	1.83%	$40,048,110.00
Cormorant Asset Management, LP	31 Dec, 2025	3,635,596	1,488,200	69.30%	$35,483,417.00
Saturn V Capital Management LP	31 Dec, 2025	3,135,953	3,135,953	0.00%	$30,606,901.00
Nextech Invest, Ltd.	31 Dec, 2025	2,915,998	0	0.00%	$28,460,140.00
Octagon Capital Advisors LP	31 Dec, 2025	2,530,700	2,530,700	0.00%	$24,699,632.00
MPM BioImpact LLC	31 Dec, 2025	2,401,992	2,401,992	0.00%	$23,443,442.00
SR ONE CAPITAL MANAGEMENT, LP	31 Dec, 2025	1,959,896	0	0.00%	$19,128,585.00
BAKER BROS. ADVISORS LP	31 Dec, 2025	1,562,500	0	0.00%	$15,250,000.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,487,626	94,340	6.77%	$14,522,800.00
State Street Corp	31 Dec, 2025	1,259,446	157,560	14.30%	$12,292,193.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	1,151,118	834,089	263.10%	$11,234,912.00
ORBIMED ADVISORS LLC	31 Dec, 2025	1,102,730	-823,693	-42.76%	$10,762,645.00
Trium Capital LLP	31 Dec, 2025	893,107	-2,229,004	-71.39%	$8,716,724.00
Goldman Sachs Group Inc	31 Dec, 2025	854,144	437,064	104.79%	$8,336,446.00

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