13F

Stock

Tectonic Therapeutic, Inc.

TECX · held by 111 managers

Reported value

$411.8M

Holders

111

+25 new · −20 exited

Holders’ est. mark

$98.9M

Price effect on 82 books still in the name

Largest holder

$87.1M

Fidelity

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Fidelity2.82M$87.1M$28.2MAdded$28.5M
TCG Crossover Management, LLC1.2M$37.2MNew
Aberdeen Group plc1.14M$35.3M$11.5MAdded$11.5M
BlackRock, Inc.860.4K$26.6M$8.59MAdded$8.77M
BRAIDWELL LP847.2K$26.2M$8.51MAdded$6.84M
First Light Asset Management, LLC647.7K$20MNew
BAKER BROS. ADVISORS LP607.8K$18.8M$6.11MCut−$58.2K
5AM Venture Management, LLC606.7K$18.8M$6.1MAdded$6.1M
VANGUARD CAPITAL MANAGEMENT LLC473.5K$14.6MHeld
Vestal Point Capital, LP328K$10.1M$3.3MAdded$3.3M
KENNEDY CAPITAL MANAGEMENT LLC286.7K$8.86M$2.1MAdded$4.5M
GEODE CAPITAL MANAGEMENT, LLC268.3K$8.29M$2.65MAdded$2.8M
MARSHALL WACE, LLP229.6K$7.1M$310.7KAdded$6.45M
ORBIMED ADVISORS LLC226.6K$7M$2.28MCut−$4.98M
State Street213.5K$6.6M$2.1MAdded$2.24M
Squarepoint Ops LLC164.4K$5.08M$1.65MAdded$917.6K
Ikarian Capital, LLC157.5K$4.87MNew
AMERIPRISE FINANCIAL INC143.4K$4.43MNew
Opaleye Management Inc.123K$3.8M$1.24MCut−$677.7K
Soleus Capital Management, L.P.121.7K$3.76MNew
D. E. Shaw & Co., Inc.116.1K$3.59M$1.17MAdded$1.08M
WELLS FARGO & COMPANY/MN112.7K$3.48M$1.13MAdded$970.7K
Woodline Partners LP100K$3.09M$1.01MCut−$1.08M
ExodusPoint Capital Management, LP83.7K$2.59M$841KAdded$267.1K
Prosight Management, LP79.9K$2.47M$802.7KCut−$2.43M
NORTHERN TRUST CORP78.4K$2.42M$726.2KAdded$914.7K
Point72 Asset Management, L.P.68.6K$2.12M$689.4KCut−$8.15M
VANGUARD FIDUCIARY TRUST CO67.9K$2.1MHeld
Connor, Clark & Lunn Investment Management Ltd.67K$2.07M$673.3KAdded$576K
MORGAN STANLEY64.8K$2M$651.7KAdded$34.5K
RAYMOND JAMES FINANCIAL INC64.2K$1.98M$548.7KAdded$845.3K
VANGUARD PORTFOLIO MANAGEMENT LLC63.6K$1.97MHeld
GOLDMAN SACHS GROUP INC62.4K$1.93M$627.4KCut−$4.2K
MILLENNIUM MANAGEMENT LLC58.3K$1.8M$586.4KCut−$4.47M
JPMORGAN CHASE & CO58.9K$1.7M$46.3KAdded$1.58M
BOOTHBAY FUND MANAGEMENT, LLC46.1K$1.43MNew
PFM Health Sciences, LP46.1K$1.43M$429.4KAdded$534.6K
Jump Financial, LLC43.1K$1.33M$397KAdded$508.2K
Tetragon Partners GP Ltd37.6K$1.16MNew
Aldebaran Capital, LLC37.2K$1.15M$373.7KAdded$370.2K
SEI INVESTMENTS CO36.9K$1.14M$153.3KAdded$821.5K
UBS Group AG30K$926.9K$301.4KAdded$275.8K
WELLINGTON MANAGEMENT GROUP LLP29.2K$903.8K$293.9KAdded$124.1K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC29.1K$899.8K$292.6KAdded$222.7K
Clearstead Advisors, LLC26.8K$827.2K$65.3KAdded$691.6K
MONIMUS CAPITAL MANAGEMENT, LP26.8K$826.9K$267.3KAdded$272.2K
Bank of New York Mellon Corp24.8K$765.3K$248.8KAdded$225.9K
TD Asset Management Inc20.4K$630.6KNew
SECTORAL ASSET MANAGEMENT INC19.1K$628.2K$230.6KCut−$253.2K
Icahn Capital16.9K$523.4KNew
SUSQUEHANNA INTERNATIONAL GROUP, LLP16.2K$500K$162.6KCut−$2.66M
ALPS ADVISORS INC15.3K$472.5K$153.6KAdded$151.9K
RHUMBLINE ADVISERS14K$433.6K$141KAdded$137.4K
MANUFACTURERS LIFE INSURANCE COMPANY, THE13.9K$430.5KNew
Virtus Investment Advisers, LLC13.8K$426.5K$135.3KAdded$145.7K
ADAR1 Capital Management, LLC13K$401.9K$130.7KCut−$224.1K
AMERICAN CENTURY COMPANIES INC12.5K$387.4KNew
Creative Planning12.4K$384.7KNew
Nuveen, LLC12K$371.9K$120.9KAdded$73.6K
XTX Topco Ltd11.6K$359.2KNew
BANK OF AMERICA CORP /DE/11.5K$354.4K$92.7KAdded$162K
DIMENSIONAL FUND ADVISORS LP10.1K$311.5K$101.3KAdded$101.3K
DEUTSCHE BANK AG\9.35K$288.9K$76.3KAdded$130.5K
Invesco Ltd.7.67K$237.2KNew
AlphaCentric Advisors LLC6.85K$211.7K$65.1KAdded$76.6K
MetLife Investment Management, LLC6.72K$207.8K$67.6KAdded$67.6K
BARCLAYS PLC6.71K$207.3K$67.4KCut−$260.9K
China Universal Asset Management Co., Ltd.6.33K$195.7K$60.8KAdded$69.5K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.5.21K$161.2K$51KAdded$55.2K
NISA INVESTMENT ADVISORS, LLC5K$154.6K$50.3KAdded$50.3K
NEW YORK STATE COMMON RETIREMENT FUND4.6K$142.2K$46.2KAdded$37.9K
Vanguard Global Advisers, LLC3.96K$122.5KHeld
BNP PARIBAS FINANCIAL MARKETS2.82K$87K$28.3KAdded$28.2K
Police & Firemen's Retirement System of New Jersey2.64K$81.5K$26.5KAdded$26.5K
CWM, LLC1.83K$56.5K$14.4KAdded$56.5K
Caption Management, LLC1.45K$44.8KNew
SIMPLEX TRADING, LLC1.35K$41.8K$13.6KCut−$148.9K
CITIGROUP INC1.15K$35.5K$10.4KAdded$13.9K
US BANCORP \DE\1.14K$35.1K$372Added$34.3K
Ameritas Investment Partners, Inc.1.12K$34.7K$11.3KAdded$11.3K
Legal & General Group Plc1K$30.9K$10.1KAdded$9.01K
Mirae Asset Global Investments Co., Ltd.979$30.3K$9.14KAdded$11.3K
Tower Research Capital LLC (TRC)914$28.3K$7.56KAdded$12.6K
Russell Investments Group, Ltd.851$26.3K$8.55KAdded$6.93K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM595$18.4K$5.98KAdded$4.29K
HighMark Wealth Management LLC587$18.1K$5.89KAdded$5.89K
Federation des caisses Desjardins du Quebec500$15.5K$5.03KAdded$5.03K
GF FUND MANAGEMENT CO. LTD.415$12.8K$3.69KAdded$5.17K
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC382$11.8K$1.74KAdded$8.2K
Rockefeller Capital Management L.P.370$11.4KNew
GAMMA Investing LLC330$10.2K$291Added$9.6K
Sterling Capital Management LLC313$9.68K$3.15KCut−$1.53K
Bollard Group LLC303K$9.36K$3.04KAdded$3.04K
PRICE T ROWE ASSOCIATES INC /MD/164.1K$5.07KNew
Farther Finance Advisors, LLC102$3.14K$1.01KCut−$4.64K
Allworth Financial LP65$2.01K$623Added$716
Marshall & Sterling Wealth Advisors Inc.50$1.55KNew
Essential Partners LLC37$1.14KNew
PNC Financial Services Group, Inc.26$804New
Caldwell Trust Co20$618$201Added$201
EverSource Wealth Advisors, LLC19$588$20Added$546
GSA CAPITAL PARTNERS LLP18.9K$583$189Cut−$737
Global Wealth Strategies & Associates18$556$181Added$181
Fortitude Family Office, LLC15$464New
HUNTINGTON NATIONAL BANK13$402New
ROTHSCHILD INVESTMENT LLC11$340New
Sunbelt Securities, Inc.8$247$50Added$143
MAI Capital Management7$217New
True Wealth Design, LLC7$217$50Added$112
Root Financial Partners, LLC5$155New
Zurcher Kantonalbank (Zurich Cantonalbank)3$93$30Cut−$3.33K

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.