13F

Stock

Quanterix Corp

QTRX · held by 127 managers

Reported value

$127.5M

Holders

127

+15 new · −23 exited

Holders’ est. mark

−$75.5M

Price effect on 108 books still in the name

Largest holder

$12.5M

AMERIPRISE FINANCIAL INC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
AMERIPRISE FINANCIAL INC3.54M$12.5M−$10.1MCut−$19.3M
BlackRock, Inc.3.28M$11.5M−$9.31MCut−$9.93M
Portolan Capital Management, LLC2.95M$10.4M−$8.37MCut−$18.4M
Blue Water Life Science Advisors, LP2.14M$7.54M−$5.94MCut−$5.77M
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC2.08M$7.33M−$5.81MCut−$5.68M
Invenomic Capital Management LP1.93M$6.8M−$4.27MCut−$2.77M
VANGUARD CAPITAL MANAGEMENT LLC1.78M$6.28MHeld
LEVIN CAPITAL STRATEGIES, L.P.1.46M$5.15MNew
First Eagle Investment Management, LLC1.3M$4.58M−$1.51MAdded$1.2M
GEODE CAPITAL MANAGEMENT, LLC994.8K$3.5M−$2.83MCut−$3.33M
Trium Capital LLP994.2K$3.5M−$2.32MCut−$1.7M
State Street898.3K$3.16M−$2.54MCut−$2.52M
Empire Financial Management Company, LLC736.1K$2.59M−$1.75MCut−$1.34M
MILLENNIUM MANAGEMENT LLC689.2K$2.43M−$1.14MCut−$134.9K
ENVESTNET ASSET MANAGEMENT INC682.7K$2.4M−$716.3KAdded$799.1K
Russell Investments Group, Ltd.642K$2.26M−$727.4KAdded$630.7K
MARSHALL WACE, LLP622.4K$2.19M−$440.7KAdded$1.2M
Williams Jones Wealth Management, LLC.613.4K$2.16M−$1.74MCut−$1.9M
MORGAN STANLEY607.9K$2.14M−$1.73MCut−$3.09M
VANGUARD PORTFOLIO MANAGEMENT LLC576.6K$2.03MHeld
Tikvah Management LLC571.6K$2.01M−$1.62MCut−$1.62M
Topline Capital Management, LLC563.1K$1.98MNew
Pier Capital, LLC492.4K$1.73MNew
DIMENSIONAL FUND ADVISORS LP443.1K$1.56M−$1.11MCut−$917.4K
UBS Group AG377K$1.33M−$884.7KCut−$654.2K
NORTHERN TRUST CORP349.7K$1.23M−$981.4KCut−$967K
CHARLES SCHWAB INVESTMENT MANAGEMENT INC345.9K$1.22M−$982.4KCut−$1.09M
Parkman Healthcare Partners LLC341.5K$1.2M−$934.2KCut−$890.2K
TUDOR INVESTMENT CORP ET AL316K$1.11M−$481.9KAdded$33.1K
VANGUARD FIDUCIARY TRUST CO270.5K$952.3KHeld
GOLDMAN SACHS GROUP INC270.2K$951.1K−$705KCut−$627.8K
ROYAL BANK OF CANADA232.1K$817K−$286.5KAdded$175K
Fidelity183.4K$645.4K−$454.1KCut−$371.6K
IRONWOOD INVESTMENT MANAGEMENT LLC169.8K$597.8K−$482.3KCut−$498.2K
JANE STREET GROUP, LLC155.7K$547.9K−$197KAdded$106.6K
Renaissance Technologies136.2K$479.4K−$33.5KAdded$404.4K
BNP PARIBAS FINANCIAL MARKETS134.4K$473.1K−$381.7KCut−$598.1K
WELLS FARGO & COMPANY/MN129K$454.2K−$366.4KCut−$580.5K
Bank of New York Mellon Corp126.4K$444.8K−$350.8KCut−$340.8K
Clearstead Advisors, LLC124.1K$436.9K−$14Added$436.9K
SCS Capital Management LLC120K$422.5K−$340.9KCut−$340.9K
Invesco Ltd.116.2K$409.1K−$321.5KCut−$310.9K
XTX Topco Ltd111.7K$393K−$210.4KCut−$78.2K
AMERICAN CENTURY COMPANIES INC101.8K$358.4K−$289.1KCut−$298K
Point72 Asset Management, L.P.93.3K$328.3KNew
Brevan Howard Capital Management LP87.4K$307.6K−$47.7KAdded$200.8K
Icahn Capital84.1K$296.1K−$186.1KCut−$120.6K
STATE OF WISCONSIN INVESTMENT BOARD84.1K$296.1K−$238.9KCut−$644K
ALLIANCEBERNSTEIN L.P.44.5K$282.9K$0Held
Dynamic Technology Lab Private Ltd77.9K$274.1KNew
Nuveen, LLC71.8K$252.9K−$202.9KCut−$201.6K
BRIDGEWAY CAPITAL MANAGEMENT, LLC68.2K$240.2K−$122.1KCut−$33.3K
Citadel61K$214.7K−$173.2KCut−$412.2K
PEDDOCK CAPITAL ADVISORS, LLC52.1K$183.4K−$148KCut−$148K
RHUMBLINE ADVISERS52.1K$183.3K−$147.9KCut−$167.3K
SUSQUEHANNA INTERNATIONAL GROUP, LLP50.7K$178.5K−$144KCut−$480.6K
BANK OF AMERICA CORP /DE/49.6K$174.4K−$120.8KCut−$96.2K
PDT Partners, LLC47.7K$167.8K−$135.4KCut−$135.4K
Quantinno Capital Management LP47.6K$167.5K−$135.2KCut−$238.2K
Schonfeld Strategic Advisors LLC42.8K$150.6K−$121.5KCut−$241.9K
FOX RUN MANAGEMENT, L.L.C.39.6K$135.8KNew
DEUTSCHE BANK AG\35.5K$124.8K−$84.9KCut−$65.4K
TWO SIGMA INVESTMENTS, LP35.2K$123.9K−$99.9KCut−$1.52M
Jump Financial, LLC28.4K$100.1K−$80.7KCut−$816.4K
LPL Financial LLC25.7K$90.4K−$70.7KCut−$67.8K
AXQ CAPITAL, LP24.4K$85.7K−$31.3KAdded$15.7K
Engineers Gate Manager LP23.8K$83.8KNew
OSAIC HOLDINGS, INC.22.8K$80.3K−$64.8KCut−$67.4K
MetLife Investment Management, LLC22.6K$79.5K−$45.3KCut−$22.1K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.19.6K$68.9K−$55.6KCut−$61.3K
Vanguard Global Advisers, LLC18.5K$65.2KHeld
Allspring Global Investments Holdings, LLC17.2K$60.6K−$45.3KCut−$39.5K
JPMORGAN CHASE & CO17.4K$59.7K−$51KCut−$665.5K
BARCLAYS PLC16.7K$58.9K−$47.6KCut−$705.5K
HUB Investment Partners, LLC13.7K$48.1K−$38.8KCut−$38.8K
Post Resch Tallon Group Inc.12.5K$45K−$32KCut−$28.7K
INTECH INVESTMENT MANAGEMENT LLC11.7K$41.1K−$33.1KCut−$80.2K
MANUFACTURERS LIFE INSURANCE COMPANY, THE11.4K$40.2K−$32.4KCut−$49.7K
MERCER GLOBAL ADVISORS INC /ADV10.9K$38.3KNew
Police & Firemen's Retirement System of New Jersey10.1K$35.4K−$28.6KCut−$28.6K
CWM, LLC7.63K$26.8K$6.86KAdded$26.8K
NEW YORK STATE COMMON RETIREMENT FUND6.5K$22.9K−$18.5KCut−$18.5K
Legal & General Group Plc3.99K$14.1K−$11.3KCut−$11.3K
Tower Research Capital LLC (TRC)3.99K$14K−$4.6KAdded$3.73K
Ameritas Investment Partners, Inc.3.48K$12.2K−$9.87KCut−$9.87K
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM2.39K$8.41K−$6.78KCut−$8.88K
CITIGROUP INC1.96K$6.91K−$5.57KCut−$707.8K
Versant Capital Management, Inc1.83K$6.45K−$5.05KCut−$4.86K
Pinnacle Wealth Planning Services, Inc.1.8K$6.33KNew
Essential Partners LLC1.72K$6.04K−$82Added$5.86K
PNC Financial Services Group, Inc.1.57K$5.54K−$3.32KCut−$1.9K
Sterling Capital Management LLC1.27K$4.49K−$3.62KCut−$10.3K
GROUP ONE TRADING LLC872$3.07KNew
Wilmington Savings Fund Society, FSB800$2.82K−$2.27KCut−$2.27K
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC771$2.71K−$1.34KCut−$282
GAMMA Investing LLC690$2.43K−$1.62KCut−$1.2K
NATIONAL BANK OF CANADA /FI/627$2.2K−$243Added$1.66K
US BANCORP \DE\526$1.85K−$1.49KCut−$38.6K
Pinnacle Bancorp, Inc.520$1.83K−$1.48KCut−$1.48K
Optiver Holding B.V.445$1.57K−$980Cut−$628
NBC SECURITIES, INC.414$1.46K−$508Added$319
SIGNATUREFD, LLC387$1.36K−$1.1KCut−$1.1K
Parallel Advisors, LLC270$950New
Rockefeller Capital Management L.P.248$873−$704Cut−$8.75K
LOS ANGELES CAPITAL MANAGEMENT LLC228$803−$337Cut−$174.1K
True Wealth Design, LLC151$532−$429Cut−$429
Allworth Financial LP111$391−$160Added$34
Fortitude Family Office, LLC106$373New
North Star Investment Management Corp.100$352−$284Cut−$284
GSA CAPITAL PARTNERS LLP95.5K$336−$272Cut−$437
JONES FINANCIAL COMPANIES LLLP73$261−$203Cut−$203
HRT FINANCIAL LP71.7K$252−$36Added$170
PRICE T ROWE ASSOCIATES INC /MD/68.4K$241−$125Cut−$38
SBI Securities Co., Ltd.62$218−$176Cut−$176
Cypress Capital Management LLC (WY)60$211−$171Cut−$171
EverSource Wealth Advisors, LLC55$193−$157Cut−$1.23K
HUNTINGTON NATIONAL BANK39$138−$2Added$132
Transamerica Financial Advisors, LLC39$137−$111Cut−$3.44K
STRS OHIO29$102−$82Cut−$82
ROTHSCHILD INVESTMENT LLC21$74−$37Cut−$9
Virtu Financial LLC19K$67−$54Cut−$64
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO13$46New
Advisory Services Network, LLC9$32New
IFP Advisors, Inc8$28−$23Cut−$23
SJS Investment Consulting Inc.7$25New
SIT INVESTMENT ASSOCIATES INC272$1−$1Cut−$1
Covestor Ltd10$0$0Held

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.