TECX · Tectonic Therapeutic, Inc. · Holdings

$22.66 +0.12 (+0.53%)

Russell 2000 member Rebalance outlook locked

Market Cap

$462.73M

19.55M

Volume · Oct 5 110.86K Avg daily vol (3M) 221.58K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

Quarter:

Holders: 123

Total Value: $487,148,539

Total Shares: 14,169,535

Showing 1–100 of 125 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 123 13F filers · Δ vs Mar 31, 2026

Top Holder

20.0%

+0.2 pts

Top 5

48.3%

+0.0 pts

Top 10

67.5%

+0.5 pts

HHI

715

Broadly held+6

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +10

Institutional value: +10.7%

Shares held: -0.5%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid First Light Asset Management, LLC	+152,983	800,726
Mega MILLENNIUM MANAGEMENT LLC	+107,177	165,525
Mid Vestal Point Capital, LP	+97,000	425,000
Mega D. E. Shaw & Co., Inc.	+70,430	186,550
Mega CITADEL ADVISORS LLC	+54,993	107,393

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid BRAIDWELL LP	−250,251	596,900
Mega PRICE T ROWE ASSOCIATES INC /MD/	−116,054	48,001
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	−105,775	187,700
Mega MARSHALL WACE, LLP	−57,494	172,101
Large ExodusPoint Capital Management, LP	−48,440	35,239

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Large HRT FINANCIAL LP	44,540	$1,531,285
Large Trexquant Investment LP	36,991	$1,271,750
Mega Fisher Asset Management, LLC	19,122	$657,414
Large Quadrature Capital Ltd	18,067	$621,143
Large Brevan Howard Capital Management LP	9,573	$329,119

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Opaleye Management Inc.	123,000	$3,801,930
Large Point72 Asset Management, L.P.	68,598	$2,120,364
Large Caption Management, LLC	26,449	$817,538
Mega TD Asset Management Inc	20,400	$630,564
Mid XTX Topco Ltd	11,621	$359,205

Filter: New 22 Increased 40 Reduced 42 Sold out 12 Unchanged 19

Showing 100 of 125

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

FMR LLC

$97,308,394

19.98%

2,830,378

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	1,691,884	$58,166,971	59.8%	Defined
FIDELITY MANAGEMENT TRUST CO	1,138,399	$39,138,157	40.2%	Defined
STRATEGIC ADVISERS LLC	95	$3,266	0.0%	Defined

TCG Crossover Management, LLC

$41,424,152

8.50%

1,204,891

Aberdeen Group plc

$39,255,909

8.06%

1,141,824

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
abrdn Inc.	1,141,824	$39,255,909	100.0%	Defined

BlackRock, Inc.

$29,655,909

6.09%

862,592

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	4,662	$160,279	0.5%	Sole
BlackRock Investment Management, LLC	30,810	$1,059,247	3.6%	Sole
BLACKROCK ADVISORS LLC	22,201	$763,270	2.6%	Sole
BlackRock Fund Advisors	474,620	$16,317,435	55.0%	Sole
BlackRock Institutional Trust Company, N.A.	299,919	$10,311,215	34.8%	Sole
BlackRock Asset Management Ireland Ltd	14,409	$495,381	1.7%	Sole
Aperio Group, LLC	15,971	$549,082	1.9%	Sole

First Light Asset Management, LLC

$27,528,959

5.65%

800,726

BAKER BROS. ADVISORS LP

$20,895,751

4.29%

607,788

5AM Venture Management, LLC

$20,856,970

4.28%

606,660

BRAIDWELL LP

$20,521,422

4.21%

596,900

VANGUARD CAPITAL MANAGEMENT LLC

$16,805,115

3.45%

488,805

Vestal Point Capital, LP

$14,611,500

3.00%

425,000

Bollard Group LLC

$10,415,524

2.14%

302,953

KENNEDY CAPITAL MANAGEMENT LLC

$9,702,104

1.99%

282,202

GEODE CAPITAL MANAGEMENT, LLC

$9,298,449

1.91%

270,461

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	37,253	$1,280,758	13.8%	Defined
Held directly	233,208	$8,017,691	86.2%	Defined

ORBIMED ADVISORS LLC

$7,790,508

1.60%

226,600

STATE STREET CORP

$7,560,437

1.55%

219,908

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	219,908	$7,560,437	100.0%	Defined

Ikarian Capital, LLC

$7,076,676

1.45%

205,837

D. E. Shaw & Co., Inc.

$6,413,589

1.32%

186,550

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	186,550	$6,413,589	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$6,054,318

1.24%

176,100

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	176,100	$6,054,318	100.0%	Other

MARSHALL WACE, LLP

$5,916,832

1.21%

172,101

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	172,101	$5,916,832	100.0%	Other

MILLENNIUM MANAGEMENT LLC

$5,690,749

1.17%

165,525

Squarepoint Ops LLC

$4,986,062

1.02%

145,028

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	145,028	$4,986,062	100.0%	Defined

AMERIPRISE FINANCIAL INC

$4,897,362

1.01%

142,448

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	133,703	$4,596,709	93.9%	Defined
Ameriprise Trust Co	8,745	$300,653	6.1%	Defined

WELLS FARGO & COMPANY/MN

$4,037,173

0.83%

117,428

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	8,579	$294,946	7.3%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	45,450	$1,562,571	38.7%	Defined
WELLS FARGO CLEARING SERVICES, LLC	63,271	$2,175,256	53.9%	Defined
Wells Fargo Securities, LLC	128	$4,400	0.1%	Defined

NORTHERN TRUST CORP

$3,916,018

0.80%

113,904

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	112,368	$3,863,211	98.7%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	1,536	$52,807	1.3%	Other

Soleus Capital Management, L.P.

$3,495,895

0.72%

101,684

Woodline Partners LP

$3,438,000

0.71%

100,000

VANGUARD PORTFOLIO MANAGEMENT LLC

$3,245,953

0.67%

94,414

CITADEL ADVISORS LLC

$3,107,711

0.64%

90,393

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	81,303	$2,795,197	89.9%	Defined
Held directly	9,090	$312,514	10.1%	Defined

GOLDMAN SACHS GROUP INC

$2,541,506

0.52%

73,924

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	37,714	$1,296,607	51.0%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	36,210	$1,244,899	49.0%	Defined

RAYMOND JAMES FINANCIAL INC

$2,498,531

0.51%

72,674

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	5,330	$183,245	7.3%	Defined
Raymond James Financial Services Advisors, Inc.	34,880	$1,199,174	48.0%	Defined
ClariVest Asset Management LLC joint	32,464	$1,116,112	44.7%	Defined

SECTORAL ASSET MANAGEMENT INC

$2,441,289

0.50%

71,009

VANGUARD FIDUCIARY TRUST CO

$2,351,385

0.48%

68,394

JANE STREET GROUP, LLC

$2,262,925

0.46%

65,821

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	35,116	$1,207,288	53.4%	Defined
Jane Street Global Trading, LLC	30,705	$1,055,637	46.6%	Defined

MORGAN STANLEY

$2,247,521

0.46%

65,373

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	3	$103	0.0%	Defined
MORGAN STANLEY & CO. LLC	2,926	$100,595	4.5%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	44,461	$1,528,569	68.0%	Defined
MORGAN STANLEY SMITH BARNEY LLC	11,799	$405,649	18.0%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	6,184	$212,605	9.5%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$2,232,637

0.46%

64,940

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	64,940	$2,232,637	100.0%	Sole

BOOTHBAY FUND MANAGEMENT, LLC

$2,089,306

0.43%

60,771

JPMORGAN CHASE & CO

$1,903,412

0.39%

55,364

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	7,691	$264,416	13.9%	Defined
J.P. Morgan Investment Management Inc.	46,139	$1,586,258	83.3%	Defined
J.P. Morgan Securities plc	1,534	$52,738	2.8%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$1,650,274

0.34%

48,001

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	8,001	$275,074	16.7%	Defined
Held directly	40,000	$1,375,200	83.3%	Sole

Tetragon Partners GP Ltd

$1,599,220

0.33%

46,516

PFM Health Sciences, LP

$1,568,793

0.32%

45,631

HRT FINANCIAL LP

$1,531,285

0.31%

44,540

Jump Financial, LLC

$1,492,092

0.31%

43,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Leap GP LLC joint	43,400	$1,492,092	100.0%	Defined

Prosight Management, LP

$1,365,951

0.28%

39,731

Trexquant Investment LP

$1,271,750

0.26%

36,991

Aldebaran Capital, LLC

$1,265,080

0.26%

36,797

ExodusPoint Capital Management, LP

$1,211,516

0.25%

35,239

WELLINGTON MANAGEMENT GROUP LLP

$1,080,631

0.22%

31,432

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	10,438	$358,858	33.2%	Defined
Wellington Trust Company, NA joint	19,549	$672,094	62.2%	Defined
Wellington Management Australia Pty Ltd	1,445	$49,679	4.6%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$1,046,458

0.21%

30,438

MONIMUS CAPITAL MANAGEMENT, LP

$967,556

0.20%

28,143

Bank of New York Mellon Corp

$867,990

0.18%

25,247

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	7,862	$270,295	31.1%	Defined
The Bank of New York Mellon	17,339	$596,114	68.7%	Defined
BNY Mellon, NA joint	45	$1,547	0.2%	Defined
Held directly	1	$34	0.0%	Defined

ALPS ADVISORS INC

$658,273

0.14%

19,147

Fisher Asset Management, LLC

$657,414

0.13%

19,122

AMERICAN CENTURY COMPANIES INC

$653,254

0.13%

19,001

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	19,001	$653,254	100.0%	Defined

Quadrature Capital Ltd

$621,143

0.13%

18,067

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	18,067	$621,143	100.0%	Other

SEI INVESTMENTS CO

$585,457

0.12%

17,029

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	17,029	$585,457	100.0%	Sole

CITADEL ADVISORS LLC

$584,460

0.12%

17,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	17,000	$584,460	100.0%	Defined

Clearstead Advisors, LLC

$571,739

0.12%

16,630

UBS Group AG

$517,590

0.11%

15,055

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	69	$2,372	0.5%	Defined
UBS AG	14,986	$515,218	99.5%	Defined

ADAR1 Capital Management, LLC

$498,544

0.10%

14,501

RHUMBLINE ADVISERS

$473,515

0.10%

13,773

Nuveen, LLC

$464,611

0.10%

13,514

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TEACHERS ADVISORS, LLC joint	13,514	$464,611	100.0%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$398,808

0.08%

11,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	11,600	$398,808	100.0%	Other

BANK OF AMERICA CORP /DE/

$379,658

0.08%

11,043

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	11,043	$379,658	100.0%	Defined

Virtus Investment Advisers, LLC

$371,510

0.08%

10,806

DIMENSIONAL FUND ADVISORS LP

$359,029

0.07%

10,443

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Ireland Ltd	283	$9,729	2.7%	Defined
Held directly	10,160	$349,300	97.3%	Sole

DEUTSCHE BANK AG\

$345,140

0.07%

10,039

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	10,039	$345,140	100.0%	Defined

Brevan Howard Capital Management LP

$329,119

0.07%

9,573

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard US Investment Management, LP	9,573	$329,119	100.0%	Defined

BARCLAYS PLC

$313,820

0.06%

9,128

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	9,078	$312,101	99.5%	Defined
BARCLAYS CAPITAL INC.	50	$1,719	0.5%	Defined

Creative Planning

$308,078

0.06%

8,961

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
CREATIVE PLANNING TRUST Co LLC	1,364	$46,894	15.2%	Defined
Held directly	7,597	$261,184	84.8%	Sole

FOX RUN MANAGEMENT, L.L.C.

$304,778

0.06%

8,865

Vanguard Global Advisers, LLC

$301,340

0.06%

8,765

GSA CAPITAL PARTNERS LLP

$284,494

0.06%

8,275

ALLIANCEBERNSTEIN L.P.

$256,474

0.05%

7,460

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	7,460	$256,474	100.0%	Defined

AlphaCentric Advisors LLC

$238,872

0.05%

6,948

MetLife Investment Management, LLC

$231,171

0.05%

6,724

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	6,724	$231,171	100.0%	Defined

AQR CAPITAL MANAGEMENT LLC

$227,490

0.05%

6,617

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Petros Family Wealth, LLC	2	$68	0.0%	Other
Prism Planning Partners LLC	3	$103	0.0%	Other
Arax Advisory Partners	725	$24,925	11.0%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	29	$997	0.4%	Other
Stokes Family Office, LLC	7	$240	0.1%	Other
Held directly	5,851	$201,157	88.4%	Defined

Invesco Ltd.

$219,618

0.05%

6,388

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	1,267	$43,559	19.8%	Defined
Invesco Trust Co joint	4,164	$143,158	65.2%	Defined
Invesco Capital Management LLC	957	$32,901	15.0%	Defined

STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM

$208,342

0.04%

6,060

Rangeley Capital, LLC

$206,280

0.04%

6,000

Velan Capital Investment Management LP

$206,280

0.04%

6,000

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$206,142

0.04%

5,996

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	5,996	$206,142	100.0%	Defined

Russell Investments Group, Ltd.

$191,393

0.04%

5,567

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	5,567	$191,393	100.0%	Defined

CITIGROUP INC

$190,739

0.04%

5,548

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	5,548	$190,739	100.0%	Defined

China Universal Asset Management Co., Ltd.

$189,193

0.04%

5,503

NISA INVESTMENT ADVISORS, LLC

$185,652

0.04%

5,400

BNP PARIBAS ARBITRAGE, SA

$176,919

0.04%

5,146

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$161,379

0.03%

4,694

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	4,694	$161,379	100.0%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$158,148

0.03%

4,600

Police & Firemen's Retirement System of New Jersey

$90,694

0.02%

2,638

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	2,638	$90,694	100.0%	Defined

Quantbot Technologies LP

$62,537

0.01%

1,819

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	1,819	$62,537	100.0%	Sole

Ameritas Investment Partners, Inc.

$38,574

0.01%

1,122

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	1,122	$38,574	100.0%	Other

US BANCORP \DE\

$37,130

0.01%

1,080

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	1,080	$37,130	100.0%	Defined

Legal & General Group Plc

$34,380

0.01%

1,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	1,000	$34,380	100.0%	Defined

Mirae Asset Global Investments Co., Ltd.

$29,016

0.01%

844

Chung Wu Investment Group, LLC

$27,504

0.01%

800

Arax Advisory Partners

$24,925

0.01%

725

Tower Research Capital LLC (TRC)

$22,725

0.00%

661

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	661	$22,725	100.0%	Defined

State of Wyoming

$20,662

0.00%

601

HighMark Wealth Management LLC

$20,181

0.00%

587

SIMPLEX TRADING, LLC

$15,092

0.00%

439

Key facts CIK 1681087 CUSIP 878972108 13F (30d) 2 filings 2 filers Visit website Investor relations