13F

Stock

Tandem Diabetes Care Inc

TNDM · held by 293 managers

Reported value

$1.88B

Holders

293

+3 new · −2 exited

Holders’ est. mark

$31.7M

Price effect on 9 books still in the name

Largest holder

$249.1M

BlackRock, Inc.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
BlackRock, Inc.15.1M$249.1M—Held
Vanguard7.34M$161.4M—Held
Sessa Capital IM, L.P.5M$109.9M—Held
Context Capital Management, LLC81.1M$82.7M—Held
Linden Advisors LP78.7M$80.2M—Held
ArrowMark Colorado Holdings LLC2.89M$63.5M—Held
State Street2.64M$58.1M—Held
Citadel2.09M$45.9M—Held
MORGAN STANLEY2.08M$45.7M$7.26MAdded$36.8M
Paradice Investment Management LLC2.08M$45.7M—Held
JENNISON ASSOCIATES LLC2.02M$44.4M—Held
BANK OF MONTREAL /CAN/42.1M$43.3M—Held
GOLDMAN SACHS GROUP INC1.68M$37M—Held
JACOBS LEVY EQUITY MANAGEMENT, INC1.65M$36.3M—Held
GEODE CAPITAL MANAGEMENT, LLC1.65M$36.3M—Held
Driehaus Capital Management LLC1.61M$35.4M—Held
Freestone Grove Partners LP1.44M$31.7M—Held
BNP PARIBAS FINANCIAL MARKETS1.25M$27.4M—Held
Assenagon Asset Management S.A.1.23M$27M—Held
TWO SIGMA INVESTMENTS, LP1.2M$26.4M—Held
BAILLIE GIFFORD & CO1.15M$25.2M—Held
Nuveen, LLC12.1M$24M—Held
First Light Asset Management, LLC1.09M$23.9M—Held
TWO SIGMA ADVISERS, LP938K$20.6M—Held
DeepCurrents Investment Group LLC20M$20.4M—Held
BARCLAYS PLC921.9K$20.2M$11.9MAdded$5.33M
MARSHALL WACE, LLP875.5K$19.2M—Held
D. E. Shaw & Co., Inc.854.3K$18.8M—Held
Fidelity4.48M$18.7M—Held
Jump Financial, LLC16.5M$17.7M—Held
ADVENT CAPITAL MANAGEMENT /DE/16.2M$16.5M—Held
BANK OF AMERICA CORP /DE/702.5K$15.4M$12.2MAdded$6.27M
NORTHERN TRUST CORP691.7K$15.2M—Held
ROYCE & ASSOCIATES LP650.3K$14.3M—Held
CHARLES SCHWAB INVESTMENT MANAGEMENT INC646.3K$14.2M—Held
MILLENNIUM MANAGEMENT LLC583.6K$12.8M—Held
Aberdeen Group plc547K$12M—Held
UBS Group AG417.8K$9.18M—Held
FRONTIER CAPITAL MANAGEMENT CO LLC412.3K$9.06M—Held
Calamos Advisors LLC8.55M$8.75M—Held
JPMORGAN CHASE & CO1.33M$8.51M—Held
SHENKMAN CAPITAL MANAGEMENT INC7.95M$8.31M—Held
DAFNA Capital Management LLC355.2K$7.81M—Held
Bank of New York Mellon Corp349.8K$7.69M—Held
Icahn Capital339.6K$7.46M—Held
PRINCIPAL FINANCIAL GROUP INC324.3K$7.13M—Held
VOYA INVESTMENT MANAGEMENT LLC319.5K$7.02M—Held
Quantinno Capital Management LP292.5K$6.43M—Held
Walleye Capital LLC6M$6.12M—Held
Invesco Ltd.277.7K$6.1M—Held
SECTOR GAMMA AS267.1K$5.87M—Held
Lisanti Capital Growth, LLC262.9K$5.78M—Held
Balyasny Asset Management L.P.262.8K$5.78M—Held
EDMOND DE ROTHSCHILD HOLDING S.A.258.2K$5.68M—Held
PUBLIC SECTOR PENSION INVESTMENT BOARD234.7K$5.16M—Held
ALLIANCEBERNSTEIN L.P.234.3K$5.15M—Held
ENVESTNET ASSET MANAGEMENT INC221.7K$4.87M—Held
JANE STREET GROUP, LLC210K$4.62M—Held
ROYAL BANK OF CANADA208.5K$4.58M—Held
Point72 Asset Management, L.P.4M$4.09M—Held
RHUMBLINE ADVISERS184.2K$4.05M—Held
ADAGE CAPITAL PARTNERS GP, L.L.C.183K$4.02M—Held
CANADA PENSION PLAN INVESTMENT BOARD177.6K$3.9M—Held
Legal & General Group Plc171.9K$3.78M—Held
CAPSTONE INVESTMENT ADVISORS, LLC3.68M$3.75M—Held
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC164.9K$3.62M—Held
CITIGROUP INC2.95M$3.37M—Held
PANAGORA ASSET MANAGEMENT INC146.2K$3.21M—Held
MIZUHO MARKETS AMERICAS LLC144.6K$3.18M—Held
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP135.8K$2.98M—Held
Swiss National Bank133.3K$2.93M—Held
SUSQUEHANNA INTERNATIONAL GROUP, LLP130.3K$2.86M—Held
AMERIPRISE FINANCIAL INC128.7K$2.83M—Held
Russell Investments Group, Ltd.128.7K$2.83M—Held
RAYMOND JAMES FINANCIAL INC120.2K$2.64M—Held
AQR Arbitrage LLC2.5M$2.55M—Held
PDT Partners, LLC110.4K$2.43M—Held
TUDOR INVESTMENT CORP ET AL108.1K$2.38M—New
SEI INVESTMENTS CO106.6K$2.34M—Held
Trexquant Investment LP102.7K$2.26M—Held
WELLINGTON MANAGEMENT GROUP LLP98.3K$2.16M—Held
BANQUE PICTET & CIE SA97.2K$2.14M—Held
ARISTEIA CAPITAL, L.L.C.2M$2.04M—Held
Universal- Beteiligungs- und Servicegesellschaft mbH89.1K$1.96M—Held
Engineers Gate Manager LP88.5K$1.95M—Held
WELLS FARGO & COMPANY/MN84.4K$1.86M—Held
Y-Intercept (Hong Kong) Ltd84K$1.85M—Held
NEW YORK STATE COMMON RETIREMENT FUND1.36M$1.8M—Held
Jefferies Financial Group Inc.1.75M$1.79M—Held
Cerity Partners LLC76.8K$1.69M—Held
Zurcher Kantonalbank (Zurich Cantonalbank)74K$1.63M—Held
Legato Capital Management LLC72.6K$1.6M—Held
FORMULA GROWTH LTD70.9K$1.56M—Held
Susquehanna Portfolio Strategies, LLC66.5K$1.46M—Held
PRUDENTIAL FINANCIAL INC65K$1.43M—Held
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM64.4K$1.42M—Held
RICE HALL JAMES & ASSOCIATES, LLC62.4K$1.37M—Held
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.61.4K$1.35M—Held
GROUP ONE TRADING LLC60.7K$1.33M—Held
NORGES BANK54.3K$1.19M—New
DEUTSCHE BANK AG\54.2K$1.19M—Held
Nierenberg Investment Management Company, LLC44.6K$979.3K—Held
WINTON GROUP Ltd44.2K$972.5K—Held
STATE OF WISCONSIN INVESTMENT BOARD43.1K$947.1K—Held
Orion Porfolio Solutions, LLC40.6K$891.9K—Held
CSS LLC/IL853K$872.8K—Held
LPL Financial LLC39.6K$870.2K—Held
MetLife Investment Management, LLC39.1K$859.2K—Held
CAPITAL FUND MANAGEMENT S.A.38.4K$844K—Held
OPPENHEIMER ASSET MANAGEMENT INC.37.9K$833.9K—Held
HSBC HOLDINGS PLC36.6K$810.3K—Held
AlphaQuest LLC35.6K$783.2K—Held
Mariner, LLC35.5K$781K—Held
HighMark Wealth Management LLC35.1K$771.9K—Held
Summit Trail Advisors, LLC34.5K$758.9K—Held
Brevan Howard Capital Management LP34.1K$749.3K—Held
Quantbot Technologies LP33K$724.4K—Held
AMERICAN CENTURY COMPANIES INC32.8K$720.1K—Held
State of Wyoming31.8K$698.9K—Held
Louisiana State Employees Retirement System31.1K$683.6K—Held
JANUS HENDERSON GROUP PLC29.8K$655.4K—Held
MANUFACTURERS LIFE INSURANCE COMPANY, THE29.7K$653.2K—Held
Amundi29.4K$647.2K—Held
TRUIST FINANCIAL CORP28.2K$619.2K—Held
FRANKLIN RESOURCES INC27.9K$613.2K—Held
STIFEL FINANCIAL CORP27.5K$604.1K—Held
Bayforest Capital Ltd27.4K$602.5K—Held
INTECH INVESTMENT MANAGEMENT LLC27.4K$601.6K—Held
IEQ CAPITAL, LLC27.2K$597.4K—Held
DEERFIELD MANAGEMENT COMPANY, L.P.26.1K$573.5K—Held
VIRGINIA RETIREMENT SYSTEMS ET Al24.7K$542.9K—Held
Advisors Asset Management, Inc.23.8K$522.6K—Held
Counterpoint Mutual Funds LLC22.9K$502.4K$53.5KAdded$139.1K
PALISADE CAPITAL MANAGEMENT, LP485K$497.4K—Held
PNC Financial Services Group, Inc.22.3K$491.2K—Held
COMERICA BANK21.4K$471.4K—Held
Inspire Investing, LLC21.1K$463K—Held
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC18.7K$440K—Held
DIVERSIFIED TRUST CO19.6K$429.9K—Held
PharVision Advisers, LLC19.6K$429.8K—Held
Corient Private Wealth LLC19.5K$429.4K—Held
State of Tennessee, Department of Treasury21.5K$427.9K—Held
ARIZONA STATE RETIREMENT SYSTEM18.9K$415.4K—Held
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM18.6K$407.8K—Held
Police & Firemen's Retirement System of New Jersey18.5K$406.7K—Held
YOUSIF CAPITAL MANAGEMENT, LLC18.8K$384.8K—Held
OP Asset Management Ltd17.1K$376.2K$168.4KAdded$168.4K
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS16.8K$369K—Held
COMMERCE BANK16.6K$365.6K—Held
Holocene Advisors, LP16.4K$360.9K—Held
NEUBERGER BERMAN GROUP LLC16K$351.2K—Held
OREGON PUBLIC EMPLOYEES RETIREMENT FUND15.5K$340.8K—Held
GREENWOOD CAPITAL ASSOCIATES LLC15.3K$337.4K—Held
Caprock Group, LLC14.8K$326K—Held
Schonfeld Strategic Advisors LLC14.6K$320.7K—Held
KLP KAPITALFORVALTNING AS14.5K$318.7K—Held
MN Wealth Advisors, LLC13.8K$302.7K—Held
180 WEALTH ADVISORS, LLC13.4K$295.5K—Held
ProShare Advisors LLC13.2K$289.8K—Held
CAPTRUST FINANCIAL ADVISORS13.1K$288.2K—Held
Tower Research Capital LLC (TRC)13.1K$287K—Held
Man Group plc12.8K$280.9K—Held
FOX RUN MANAGEMENT, L.L.C.11.4K$250.5K—Held
MERCER GLOBAL ADVISORS INC /ADV11.3K$248.2K—Held
GUGGENHEIM CAPITAL LLC11.2K$245.2K—Held
Lighthouse Investment Partners, LLC11K$241.8K—Held
Apollon Wealth Management, LLC11K$240.9K—Held
Cetera Investment Advisers10.9K$240.4K—Held
Verition Fund Management LLC10.6K$232.7K—Held
Prosperitas Financial LLC10K$219.8K—Held
EP Wealth Advisors, LLC9.98K$219.3K—Held
Maryland State Retirement & Pension System9.86K$216.6K—Held
VICTORY CAPITAL MANAGEMENT INC9.77K$214.8K—Held
Focus Partners Wealth9.55K$209.8K—Held
Creative Planning9.48K$208.3K—Held
EntryPoint Capital, LLC9.48K$208.3K—Held
Fiduciary Trust Co9.45K$207.6K—Held
Walleye Trading LLC9.36K$205.7K—Held
China Universal Asset Management Co., Ltd.8K$175.8K—Held
Leonteq Securities AG7.81K$171.6K$76.8KAdded$37.5K
CoreCap Advisors, LLC5.91K$129.9K—Held
Ameritas Investment Partners, Inc.5.59K$122.8K—Held
Ensign Peak Advisors, Inc5.03K$110.6K—Held
Ares Systematic Credit Ltd100K$102.4K—Held
GAMMA Investing LLC4.54K$99.8K—Held
Farther Finance Advisors, LLC3.6K$79.1K—Held
CREATIVE FINANCIAL DESIGNS INC /ADV3.43K$75.4K—Held
Pinnacle Wealth Planning Services, Inc.3.01K$66.1K—Held
Essential Partners LLC2.89K$63.5K$28.2KAdded$28.7K
GW&K Investment Management, LLC2.68M$58.8K—Held
OSAIC HOLDINGS, INC.2.62K$57.5K—Held
Stonehage Fleming Financial Services Holdings Ltd2.55K$56.1K—Held
US BANCORP \DE\2.02K$44.4K—Held
ASSETMARK, INC1.75K$38.5K—Held
AdvisorNet Financial, Inc1.68K$36.9K—Held
FIRST HORIZON CORP1.62K$35.7K—Held
McIlrath & Eck, LLC1.6K$35.3K—Held
JONES FINANCIAL COMPANIES LLLP1.56K$34.3K—Held
Quarry LP1.44K$31.6K—Held
Smartleaf Asset Management LLC1.33K$29.9K—Held
NISA INVESTMENT ADVISORS, LLC1.33K$29.3K—Held
EverSource Wealth Advisors, LLC1.05K$23.1K—Held
FIFTH THIRD BANCORP1.04K$22.8K—Held
NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO686$15.1K—Held
Rockefeller Capital Management L.P.627$13.8K—Held
Salomon & Ludwin, LLC595$13.8K—Held
Global Retirement Partners, LLC600$13.2K—Held
QUADRANT CAPITAL GROUP LLC568$12.5K—Held
Allworth Financial LP542$11.9K$2.82KAdded$8.43K
INSIGNEO ADVISORY SERVICES, LLC11K$11.2K—Held
Arax Advisory Partners498$10.9K—Held
Quent Capital, LLC457$10K—Held
Sterling Capital Management LLC444$9.76K—Held
SUMMIT SECURITIES GROUP LLC432$9.49K—Held
Caitong International Asset Management Co., Ltd431$9.47K—Held
ACADIAN ASSET MANAGEMENT LLC392.8K$8.63K—Held
Transamerica Financial Advisors, LLC389$8.55K—Held
Torren Management, LLC379$8.33K—Held
Versant Capital Management, Inc377$8.29K—Held
UMB Bank, n.a.377$8.29K—Held
Ancora Advisors LLC360$7.91K—Held
SIGNATUREFD, LLC347$7.63K—Held
Larson Financial Group LLC292$6.42K—Held
LOS ANGELES CAPITAL MANAGEMENT LLC348$5.08K—Held
HARBOUR INVESTMENTS, INC.204$4.48K—Held
HRT FINANCIAL LP185.6K$4.08K—Held
MAI Capital Management141$3.1K—Held
Colonial Trust Co / SC128$2.88K—Held
ROTHSCHILD INVESTMENT LLC123$2.7K—Held
Newbridge Financial Services Group, Inc.120$2.64K—Held
ALGERT GLOBAL LLC108.9K$2.39K—Held
TOTH FINANCIAL ADVISORY CORP100$2.2K—Held
Front Row Advisors LLC100$2.2K—Held
NewEdge Advisors, LLC100$2.2K—Held
Fortitude Family Office, LLC97$2.13K—Held
Elequin Capital, LP90$1.98K—Held
Golden State Wealth Management, LLC80$1.76K—Held
Federation des caisses Desjardins du Quebec75$1.65K—Held
IFP Advisors, Inc69$1.52K$640Added$728
NEW YORK STATE TEACHERS RETIREMENT SYSTEM68.3K$1.5K—Held
True Wealth Design, LLC67$1.47K—Held
Parallel Advisors, LLC65$1.43K—Held
MassMutual Private Wealth & Trust, FSB64$1.41K—Held
Bare Financial Services, Inc64$1.41K—Held
SG Americas Securities, LLC62K$1.36K—Held
TD PRIVATE CLIENT WEALTH LLC60$1.32K—Held
NATIXIS ADVISORS, LLC57K$1.25K—Held
PRICE T ROWE ASSOCIATES INC /MD/56.8K$1.25K—Held
CANADA LIFE ASSURANCE Co56.3K$1.24K—Held
Parkside Financial Bank & Trust56$1.23K—Held

Who left

Positions as of Q4 2025. 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.