LXEO · Lexeo Therapeutics, Inc. · Shareholders & Ownership

$3.03 +0.27 (+9.78%)

Russell 2000 member Rebalance outlook locked

Market Cap

$226.45M

82.05M

Volume · Oct 20 1.27M Avg daily vol (3M) 1.29M

Every disclosed holder of LXEO in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns LXEO

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	142	88,475,345	107.84%	Yes
Insiders (Forms 3, 4, 5)	9	970,886	1.18%	Yes
13D/G-only blocks	10	19,192,691	23.39%	Yes
Remaining	—	26,592,667	-32.41%	Negative
Registered funds (N-PORT, not summed)	131	15,895,117	19.37%	No

Shares outstanding: 82,046,255, the issuer's latest cover-page count restated onto today's split basis.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of LXEO

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	SUVRETTA CAPITAL MANAGEMENT, LLC 13F CIK 1569064 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	6,384,200	7.78%	+5,134,200	Jun 30, 2026	carried, not yet filed for the newest quarter
2	Affinity Asset Advisors, LLC 13F CIK 1773195 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,807,611	7.08%	+757,400	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	Affinity Asset Advisors, LLC 13G CIK 1773195 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	6,674,913	8.14%	+2,422,908	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
3	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	5,739,455	7.00%	+628,584	Jun 30, 2026	carried, not yet filed for the newest quarter
3.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	1,846,016	2.25%	+213,988	Jun 30, 2026	iShares Trust, not summed
3.2	iShares Russell 2000 Value ETF Fund S000004342 · Registered fund · Jun 30, 2026 iShares Trust, not summed	665,326	0.81%	+102,877	Jun 30, 2026	iShares Trust, not summed
3.3	iShares Biotechnology ETF Fund S000004350 · Registered fund · Jun 30, 2026 iShares Trust, not summed	435,053	0.53%	-22,394	Jun 30, 2026	iShares Trust, not summed
3.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	238,249	0.29%	+72,833	Jun 30, 2026	iShares Trust, not summed
3.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	132,507	0.16%	+25,713	Jun 30, 2026	Quantitative Master Series LLC, not summed
4	James N. Topper 13G CIK 1863769 · Unknown · May 28, 2025 Rule 13d-1(c), passive investor	5,500,812	6.70%	—	May 28, 2025	Rule 13d-1(c), passive investor
5	RA CAPITAL MANAGEMENT, L.P. 13F CIK 1346824 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,000,000	6.09%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
6	Frazier Life Sciences Management, L.P. 13F CIK 1892134 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,824,725	5.88%	+400,000	Jun 30, 2026	carried, not yet filed for the newest quarter
7	JPMORGAN CHASE & CO 13G CIK 19617 · Bank · Sep 30, 2026 Rule 13d-1(b), qualified institution, not summed	4,573,701	5.57%	—	Sep 30, 2026	Rule 13d-1(b), qualified institution, not summed
7.1	JPMORGAN CHASE & CO 13F CIK 19617 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	96,290	0.12%	+3,127	Jun 30, 2026	carried, not yet filed for the newest quarter
8	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	4,354,757	5.31%	+786,515	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	STATE STREET CORP 13G CIK 93751 · Bank · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	4,354,775	5.31%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
8.2	State Street(R) SPDR(R) S&P(R) Biotech ETF Fund S000010018 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	2,429,592	2.96%	+566,885	Jun 30, 2026	SPDR SERIES TRUST, not summed
8.3	State Street(R) SPDR(R) S&P Kensho New Economies Composite ETF Fund S000063362 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	566,200	0.69%	+244,272	Jun 30, 2026	SPDR SERIES TRUST, not summed
8.4	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	23,500	0.03%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
8.5	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	1,571	0.00%	0	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
9	Vestal Point Capital, LP 13F CIK 1974915 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,320,000	5.27%	-155,000	Jun 30, 2026	carried, not yet filed for the newest quarter
10	Paradigm Biocapital Advisors LP 13F CIK 1855655 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,175,382	5.09%	-2,008,752	Jun 30, 2026	carried, not yet filed for the newest quarter
10.1	Paradigm Biocapital Advisors LP 13G CIK 1855655 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(c), passive investor, not summed	4,175,382	5.09%	+503,383	Jun 30, 2026	Rule 13d-1(c), passive investor, not summed
11	Jupiter Topco LLC 13F CIK 2146052 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	3,954,691	4.82%	-1,021,738	Jun 30, 2026	carried, not yet filed for the newest quarter
12	ORBIMED ADVISORS LLC 13F CIK 1055951 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,947,850	4.81%	+345,400	Jun 30, 2026	carried, not yet filed for the newest quarter
12.1	ORBIMED ADVISORS LLC 13G CIK 1055951 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	3,203,050	3.90%	—	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
13	CITADEL ADVISORS LLC 13F CIK 1423053 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,898,570	4.75%	+63,571	Jun 30, 2026	carried, not yet filed for the newest quarter
14	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,125,893	3.81%	+118,800	Jun 30, 2026	carried, not yet filed for the newest quarter
15	Millennium Management LLC 13G CIK 1319244 · Unknown · Jun 30, 2025 Rule 13d-1(c), passive investor	2,836,292	3.46%	+902,913	Jun 30, 2025	Rule 13d-1(c), passive investor
16	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,833,622	3.45%	+1,220,842	Jun 30, 2026	carried, not yet filed for the newest quarter
17	Longitude Capital Partners IV, LLC 13G CIK 1829169 · Unknown · Sep 30, 2025 Rule 13d-1(d), exempt investor	2,765,381	3.37%	0	Sep 30, 2025	Rule 13d-1(d), exempt investor
18	Woodline Partners LP 13F CIK 1784547 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,500,532	3.05%	-250,000	Jun 30, 2026	carried, not yet filed for the newest quarter
19	Balyasny Asset Management L.P. 13F CIK 1218710 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,412,742	2.94%	+823,157	Jun 30, 2026	carried, not yet filed for the newest quarter
19.1	Balyasny Asset Management L.P. 13G CIK 1218710 · Registered investment adviser · Jun 30, 2026 Rule 13d-1(b), qualified institution, not summed	7,844,311	9.56%	-501,340	Jun 30, 2026	Rule 13d-1(b), qualified institution, not summed
20	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	2,335,144	2.85%	+75,884	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
21	Mizuho Financial Group, Inc. 13G CIK 1335730 · Bank · Mar 31, 2025 Rule 13d-1(b), qualified institution	2,203,631	2.69%	+277,300	Mar 31, 2025	Rule 13d-1(b), qualified institution
22	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,149,612	2.62%	+199,727	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	Goldman Sachs Small Cap Equity Insights Fund Fund S000009329 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	119,239	0.15%	0	Jul 31, 2026	Goldman Sachs Trust, not summed
22.2	Goldman Sachs Small Cap Value Insights Fund Fund S000014929 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	68,875	0.08%	-81,404	Jul 31, 2026	Goldman Sachs Trust, not summed
22.3	Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund Fund S000009355 · Registered fund · Jun 30, 2026 Goldman Sachs Variable Insurance Trust, not summed	23,133	0.03%	-15,779	Jun 30, 2026	Goldman Sachs Variable Insurance Trust, not summed
22.4	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	11,236	0.01%	+8,723	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
23	683 Capital Management, LLC 13F CIK 1404574 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,875,000	2.29%	+675,000	Jun 30, 2026	carried, not yet filed for the newest quarter
24	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,747,959	2.13%	+234,182	Jun 30, 2026	carried, not yet filed for the newest quarter
25	ADAR1 Capital Management, LLC 13F CIK 1940272 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,565,950	1.91%	+98,600	Jun 30, 2026	carried, not yet filed for the newest quarter
26	Avoro Capital Advisors LLC 13F CIK 1633313 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,489,189	1.82%	-385,811	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,376,222	1.68%	+910,707	Jun 30, 2026	carried, not yet filed for the newest quarter
28	NOVO HOLDINGS A/S 13G CIK 1388325 · Unknown · Dec 11, 2023 Rule 13d-1(c), passive investor	1,307,829	1.59%	+13,776	Dec 11, 2023	Rule 13d-1(c), passive investor
29	Nantahala Capital Management, LLC 13F CIK 1472322 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,300,000	1.58%	+100,000	Jun 30, 2026	carried, not yet filed for the newest quarter
30	DIMENSIONAL FUND ADVISORS LP 13F CIK 354204 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,287,185	1.57%	+183,601	Jun 30, 2026	carried, not yet filed for the newest quarter
30.1	Dimensional U.S. Small Cap ETF Fund S000070906 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	254,051	0.31%	+8,569	Jul 31, 2026	Dimensional ETF Trust, not summed
30.2	U.S. SMALL CAP PORTFOLIO Fund S000000971 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	232,132	0.28%	0	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
30.3	U.S. MICRO CAP PORTFOLIO Fund S000000948 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	205,888	0.25%	+3,616	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
30.4	Dimensional U.S. Core Equity 2 ETF Fund S000070903 · Registered fund · Jul 31, 2026 Dimensional ETF Trust, not summed	171,599	0.21%	+60,811	Jul 31, 2026	Dimensional ETF Trust, not summed
30.5	U.S. CORE EQUITY 2 PORTFOLIO Fund S000000980 · Registered fund · Jul 31, 2026 DFA INVESTMENT DIMENSIONS GROUP INC, not summed	66,500	0.08%	-38,098	Jul 31, 2026	DFA INVESTMENT DIMENSIONS GROUP INC, not summed
31	EVENTIDE ASSET MANAGEMENT, LLC 13G CIK 1442891 · Registered investment adviser · Dec 31, 2024 Rule 13d-1(b), qualified institution	1,234,834	1.51%	-621,152	Dec 31, 2024	Rule 13d-1(b), qualified institution
32	Omega Fund VI, L.P. 13G CIK 1757917 · Unknown · Dec 31, 2024 Rule 13d-1(d), exempt investor	1,184,636	1.44%	-972,987	Dec 31, 2024	Rule 13d-1(d), exempt investor
33	D1 Capital Partners L.P. 13G CIK 1747057 · Registered investment adviser · Mar 31, 2025 Rule 13d-1(b), qualified institution	978,652	1.19%	-1,527,955	Mar 31, 2025	Rule 13d-1(b), qualified institution
34	Lundbeckfond Invest A/S 13G CIK 1591046 · Unknown · Sep 30, 2024 Rule 13d-1(d), exempt investor	942,671	1.15%	-893,288	Sep 30, 2024	Rule 13d-1(d), exempt investor
35	Spruce Street Capital LP 13F CIK 2050194 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	928,593	1.13%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Blackstone Inc. 13F CIK 1393818 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	904,959	1.10%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
37	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	867,391	1.06%	+373,725	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Small Cap Value Fund Fund S000001246 · Registered fund · Jun 30, 2026 Northern Funds, not summed	261,109	0.32%	—	Jun 30, 2026	Northern Funds, not summed
37.2	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	34,995	0.04%	+2,233	Jun 30, 2026	Northern Funds, not summed
37.3	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	4,594	0.01%	-131	Jun 30, 2026	Northern Funds, not summed
38	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	715,413	0.87%	+43,666	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
39	Aberdeen Group plc 13F CIK 1716774 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	675,092	0.82%	+429,188	Jun 30, 2026	carried, not yet filed for the newest quarter
40	abrdn Life Sciences Investors Fund · Registered fund · Jun 30, 2026 abrdn Life Sciences Investors, not summed	675,092	0.82%	—	Jun 30, 2026	abrdn Life Sciences Investors, not summed
41	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	613,826	0.75%	+36,634	Jun 30, 2026	carried, not yet filed for the newest quarter
42	Janus Henderson Global Life Sciences Fund Fund S000010494 · Registered fund · Jun 30, 2026 Janus Investment Fund, not summed	561,264	0.68%	-72,222	Jun 30, 2026	Janus Investment Fund, not summed
43	Ikarian Capital, LLC 13F CIK 1778253 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	513,011	0.63%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
44	BANK OF AMERICA CORP /DE/ 13F CIK 70858 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	490,331	0.60%	-1,201	Jun 30, 2026	carried, not yet filed for the newest quarter
45	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	430,696	0.52%	+45,962	Jun 30, 2026	carried, not yet filed for the newest quarter
46	MORGAN STANLEY 13F CIK 895421 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	395,102	0.48%	-7,822	Jun 30, 2026	carried, not yet filed for the newest quarter
47	BNP PARIBAS ARBITRAGE, SA 13F CIK 1166588 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	388,398	0.47%	+160,197	Jun 30, 2026	carried, not yet filed for the newest quarter
48	Hennion & Walsh Asset Management, Inc. 13F CIK 1861642 · Unknown · Sep 30, 2026	381,989	0.47%	+116,292	Sep 30, 2026
49	DAFNA Capital Management LLC 13F CIK 1389933 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	377,059	0.46%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Townsend Richard Nolan Insider CIK 1995218 · Sep 14, 2026 Director, Chief Executive Officer, issuer-wide	376,778	0.46%	+2,306	Sep 14, 2026	Director, Chief Executive Officer, issuer-wide

11 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 222 holders

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Key facts CIK 1907108 CUSIP 52886X107 13F (30d) 10 filings 10 filers Visit website Investor relations