Alumis Inc. (ALMS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

12,901,981Shares held by institutions

$260,684,526Value of institutional holdings

103.40%Institutional ownership %

97.35%Shares Changed QoQ

111No. 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.
Their total shares held in ALMS increased 13.91% from the prior quarter, while the number of investors in Alumis increased 101.54% year over year.
During the quarter, 76 of these 131 funds increased positions in ALMS, 34 reduced exposure, and 21 held steady.
In total, institutional investors 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.
As of December 31, 2025, the biggest holder of Alumis is AyurMaya Capital Management Company, LP at 15.14Mn shares, representing 14.54% of shares outstanding.
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 largest sales of ALMS for the quarter ending December 2025 came from 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).
According to Business Quant data, leading holders of ALMS for 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

12,901,981 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	373,425	8.91%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	73,675	1.83%	$0.00
AyurMaya Capital Management Company, LP	31 Dec, 2025	0	0.00%	$0.00
Barclays Plc	31 Dec, 2025	20,482	20.13%	$0.00
Cormorant Asset Management, LP	31 Dec, 2025	1,488,200	69.30%	$0.00
Foresite Capital Management V, LLC	31 Dec, 2025	0	0.00%	$0.00
Nextech Invest, Ltd.	31 Dec, 2025	0	0.00%	$0.00
Samsara BioCapital, LLC	31 Dec, 2025	955,614	19.90%	$0.00
BAKER BROS. ADVISORS LP	31 Dec, 2025	0	0.00%	$0.00
venBio Partners LLC	31 Dec, 2025	0	0.00%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	94,340	6.77%	$0.00
Foresite Capital Management VI LLC	31 Dec, 2025	0	0.00%	$0.00
State Street Corp	31 Dec, 2025	157,560	14.30%	$0.00
Saturn V Capital Management LP	31 Dec, 2025	3,135,953	0.00%	$0.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	834,089	263.10%	$0.00
Octagon Capital Advisors LP	31 Dec, 2025	2,530,700	0.00%	$0.00
ORBIMED ADVISORS LLC	31 Dec, 2025	-823,693	-42.76%	$0.00
MPM BioImpact LLC	31 Dec, 2025	2,401,992	0.00%	$0.00
Opaleye Management Inc.	31 Dec, 2025	-130,000	-19.55%	$0.00
SR ONE CAPITAL MANAGEMENT, LP	31 Dec, 2025	0	0.00%	$0.00

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