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Tandem Diabetes Care (TNDM) Institutional Ownership

Tandem Diabetes Care logo
$11.78 +0.73 (+6.62%)
As of 10:46 AM Eastern
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Institutional Ownership Changes (13F Filings) for Tandem Diabetes Care (NASDAQ:TNDM)

Number of
Institutional Buyers
(last 12 months)
205
Total
Institutional Inflows
(last 12 months)
$697.93M
Number of
Institutional Sellers
(last 12 months)
121
Total
Institutional Outflows
(last 12 months)
$646.81M
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TNDM Institutional Buying and Selling by Quarter

Tandem Diabetes Care Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/19/2025 State of Wyoming21,436$400K0.0%+379.9%0.032%
8/16/2025 Public Sector Pension Investment Board227,104$4.23M0.0%+9.1%0.336%
8/15/2025 CANADA LIFE ASSURANCE Co56,332$1.05M0.0%+5.7%0.083%
8/15/2025 Tower Research Capital LLC TRC 9,168$171K0.0%+218.6%0.014%
8/15/2025 Corient Private Wealth LLC23,600$440K0.0%+109.4%0.035%
8/15/2025 State of Tennessee Department of Treasury36,189$675K0.0%+21.3%0.054%
8/15/2025 Captrust Financial Advisors24,766$462K0.0%+15.1%0.037%
8/15/2025 Soleus Capital Management L.P.200,000$3.73M0.2%-59.7%0.296%
8/15/2025 Orion Porfolio Solutions LLC44,611$832K0.0%-5.3%0.066%
8/15/2025 Moore Capital Management LP59,726$1.11M0.0%-42.8%0.088%
8/15/2025 Man Group plc74,886$1.40M0.0%+174.1%0.111%
8/15/2025 Engineers Gate Manager LP170,488$3.18M0.0%-10.7%0.252%
8/15/2025 Beaconlight Capital LLC53,455$996K0.6%-75.7%0.079%
8/15/2025 Brevan Howard Capital Management LP94,734$1.77M0.0%+778.9%0.140%
8/15/2025 Balyasny Asset Management L.P.230,934$4.31M0.0%-70.0%0.342%
8/15/2025 Adage Capital Partners GP L.L.C.250,000$4.66M0.0%N/A0.370%
8/15/2025 Ameriprise Financial Inc.419,037$7.81M0.0%+8.0%0.620%
8/14/2025 PDT Partners LLC170,420$3.18M0.2%N/A0.252%
8/14/2025 Raymond James Financial Inc.143,274$2.67M0.0%-23.2%0.212%
8/14/2025 Bayesian Capital Management LP28,400$529K0.1%N/A0.042%
8/14/2025 Quantinno Capital Management LP319,659$5.96M0.0%+32.2%0.473%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.63,638$1.19M0.0%-14.5%0.094%
8/14/2025 Squarepoint Ops LLC180,660$3.37M0.0%+45.8%0.267%
8/14/2025 Sei Investments Co.186,731$3.48M0.0%+50.7%0.276%
8/14/2025 Frontier Capital Management Co. LLC364,098$6.79M0.1%-0.3%0.539%
8/14/2025 Ophir Asset Management Pty Ltd1,464,956$27.31M4.3%N/A2.168%
8/14/2025 Hood River Capital Management LLC2,564,978$47.81M0.7%+10.9%3.796%
8/14/2025 Cerity Partners LLC82,262$1.53M0.0%+8.2%0.122%
8/14/2025 Formula Growth Ltd.122,096$2.28M0.9%-1.5%0.181%
8/13/2025 Jump Financial LLC162,950$3.04M0.0%N/A0.241%
8/13/2025 Brown Advisory Inc.1,057,115$19.71M0.0%+14.2%1.564%
8/13/2025 Amundi11,022$188K0.0%-56.2%0.016%
8/13/2025 Brown Capital Management LLC551,207$10.27M0.3%-6.7%0.816%
8/13/2025 Kennedy Capital Management LLC117,702$2.19M0.1%-37.1%0.174%
8/13/2025 Invesco Ltd.226,789$4.23M0.0%-84.7%0.336%
8/13/2025 Arrowstreet Capital Limited Partnership12,411$231K0.0%N/A0.018%
8/13/2025 Quantbot Technologies LP33,445$623K0.0%N/A0.049%
8/13/2025 Hsbc Holdings PLC29,742$554K0.0%+110.3%0.044%
8/13/2025 Paradice Investment Management LLC1,767,179$32.94M6.7%+7.1%2.615%
8/13/2025 Capital Fund Management S.A.262,431$4.89M0.0%+575.4%0.388%
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8/13/2025 Russell Investments Group Ltd.198,713$3.70M0.0%+42.9%0.294%
8/12/2025 Advisors Asset Management Inc.25,001$466K0.0%+11.3%0.037%
8/12/2025 XTX Topco Ltd18,793$350K0.0%N/A0.028%
8/12/2025 Edmond DE Rothschild Holding S.A.262,600$4.90M0.1%+4.0%0.389%
8/12/2025 Champlain Investment Partners LLC1,455,123$27.12M0.2%+6.3%2.154%
8/12/2025 Prudential Financial Inc.382,804$7.70M0.0%+122.5%0.567%
8/12/2025 Rhumbline Advisers193,219$3.60M0.0%+8.4%0.286%
8/12/2025 Legal & General Group Plc184,853$3.45M0.0%+4.4%0.274%
8/12/2025 JPMorgan Chase & Co.562,254$10.48M0.0%-64.0%0.832%
8/12/2025 Dynamic Technology Lab Private Ltd26,143$488K0.1%+122.2%0.039%
8/11/2025 Universal Beteiligungs und Servicegesellschaft mbH101,346$1.89M0.0%-90.7%0.150%
8/8/2025 Intech Investment Management LLC47,343$882K0.0%-6.2%0.071%
8/8/2025 Cetera Investment Advisers14,723$274K0.0%-21.3%0.022%
8/8/2025 SG Americas Securities LLC27,760$517K0.0%+69.8%0.042%
8/8/2025 Commonwealth of Pennsylvania Public School Empls Retrmt SYS17,101$319K0.0%+8.8%0.026%
8/8/2025 Police & Firemen s Retirement System of New Jersey15,299$285K0.0%+10.1%0.023%
8/8/2025 Geode Capital Management LLC1,606,336$29.95M0.0%+3.2%2.412%
8/8/2025 PNC Financial Services Group Inc.20,954$391K0.0%+8.9%0.031%
8/8/2025 KBC Group NV191,837$3.58M0.0%-1.0%0.288%
8/7/2025 Lisanti Capital Growth LLC253,840$4.73M1.3%N/A0.381%
8/7/2025 Acadian Asset Management LLC358,516$6.68M0.0%+54.0%0.538%
8/7/2025 Campbell & CO Investment Adviser LLC30,108$561K0.0%N/A0.045%
8/7/2025 Connor Clark & Lunn Investment Management Ltd.784,218$14.62M0.1%+21.6%1.177%
8/6/2025 Fox Run Management L.L.C.31,516$587K0.1%N/A0.047%
8/5/2025 Corton Capital Inc.13,038$243K0.3%N/A0.020%
8/1/2025 Jennison Associates LLC1,658,942$30.92M0.0%+12.3%2.491%
8/1/2025 Mizuho Markets Americas LLC138,742$2.59M0.1%+19.8%0.208%
8/1/2025 Teacher Retirement System of Texas31,576$589K0.0%-2.7%0.047%
8/1/2025 Bessemer Group Inc.25,046$467K0.0%+11.3%0.038%
8/1/2025 Envestnet Asset Management Inc.278,010$5.18M0.0%-12.7%0.417%
7/31/2025 Nisa Investment Advisors LLC4,171$78K0.0%+186.9%0.006%
7/31/2025 Oppenheimer Asset Management Inc.54,041$1.01M0.0%-25.7%0.081%
7/31/2025 AlphaQuest LLC17,371$324K0.0%+102.9%0.026%
7/31/2025 Sector Gamma AS210,523$3.92M1.3%+16.6%0.316%
7/30/2025 Stephens Investment Management Group LLC1,737,769$32.39M0.4%+1.8%2.609%
7/29/2025 VIRGINIA RETIREMENT SYSTEMS ET Al36,900$688K0.0%N/A0.055%
7/28/2025 Bayforest Capital Ltd9,271$173K0.1%-64.7%0.014%
7/25/2025 CWM LLC2,796$52K0.0%+262.6%0.004%
7/24/2025 Inspire Investing LLC20,843$389K0.0%+16.5%0.031%
7/24/2025 US Bancorp DE35,360$659K0.0%-17.2%0.053%
7/21/2025 HighMark Wealth Management LLC23,670$441K0.2%-6.0%0.036%
7/18/2025 Truist Financial Corp123,531$2.30M0.0%-10.8%0.185%
7/16/2025 State of Alaska Department of Revenue39,660$739K0.0%+9.0%0.060%
7/16/2025 Banque Pictet & Cie SA84,028$1.57M0.0%N/A0.126%
7/14/2025 Park Avenue Securities LLC10,938$204K0.0%-6.6%0.016%
7/11/2025 Farther Finance Advisors LLC2,637$49K0.0%-35.9%0.004%
7/11/2025 Diversified Trust Co16,348$305K0.0%+11.8%0.025%
7/11/2025 Assenagon Asset Management S.A.31,403$585K0.0%N/A0.047%
6/18/2025 Voya Investment Management LLC136,698$2.62M0.0%+39.2%0.205%
6/3/2025 Inspire Investing LLC17,893$343K0.0%N/A0.027%
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5/21/2025 Acadian Asset Management LLC232,872$4.46M0.0%N/A0.350%
5/19/2025 Bayforest Capital Ltd26,288$504K0.2%+197.0%0.039%
5/19/2025 UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC193,993$3.72M0.0%+9.1%0.291%
5/16/2025 Fred Alger Management LLC1,454,239$27.86M0.2%-25.2%2.183%
5/16/2025 Goldman Sachs Group Inc.712,559$13.65M0.0%+5.0%1.070%
5/16/2025 Dynamic Technology Lab Private Ltd11,766$225K0.0%N/A0.018%
5/16/2025 Sessa Capital IM L.P.4,466,307$85.57M3.3%N/A6.705%
5/16/2025 Park West Asset Management LLC1,123,052$21.52M1.7%-29.8%1.686%
5/16/2025 Millennium Management LLC227,585$4.36M0.0%+41.1%0.342%
5/16/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.74,413$1.43M0.0%+2.9%0.112%
(Data available from 1/1/2016 forward)

TNDM Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of TNDM shares?

During the previous two years, 311 institutional investors and hedge funds held shares of Tandem Diabetes Care. The most heavily invested institutionals were Eminence Capital LP ($152.94M), Vanguard Group Inc. ($139.72M), State Street Corp ($112.63M), ArrowMark Colorado Holdings LLC ($98.11M), Sessa Capital IM L.P. ($85.57M), GW&K Investment Management LLC ($54.87M), and Hood River Capital Management LLC ($47.81M).Learn more on Tandem Diabetes Care's institutional investors.

Which institutional investors have been buying Tandem Diabetes Care's stock?

Of the 260 institutional investors that purchased Tandem Diabetes Care's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Sessa Capital IM L.P. ($4.47M), Jennison Associates LLC ($2.43M), Eminence Capital LP ($2.37M), GW&K Investment Management LLC ($2.29M), Hood River Capital Management LLC ($1.53M), Ophir Asset Management Pty Ltd ($1.46M), and Chicago Capital LLC ($1.12M).

How much institutional buying is happening at Tandem Diabetes Care?

Institutional investors have bought a total of 25,035,755 shares in the last 24 months. This purchase volume represents approximately $697.93M in transactions.

Which of Tandem Diabetes Care's major shareholders have been selling company stock?

Of the 121 institutional investors that sold Tandem Diabetes Care's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Capital World Investors ($2.50M), Janus Henderson Group PLC ($1.42M), Invesco Ltd. ($1.37M), Bellevue Group AG ($1.07M), JPMorgan Chase & Co. ($1.00M), Universal Beteiligungs und Servicegesellschaft mbH ($986.48K), and Chicago Capital LLC ($982.42K).

How much institutional selling is happening at Tandem Diabetes Care?

Institutional investors have sold a total of 21,425,167 shares in the last 24 months. This volume of shares sold represents approximately $646.81M in transactions.


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This page (NASDAQ:TNDM) was last updated on 8/22/2025 by MarketBeat.com Staff
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