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Tandem Diabetes Care (TNDM) Institutional Ownership

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$21.65 -1.87 (-7.95%)
Closing price 04:00 PM Eastern
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$23.04 +1.39 (+6.42%)
As of 07:53 PM Eastern
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Institutional Ownership Changes (13F Filings) for Tandem Diabetes Care (NASDAQ:TNDM)

Number of
Institutional Buyers
(last 12 months)
204
Total
Institutional Inflows
(last 12 months)
$697.10M
Number of
Institutional Sellers
(last 12 months)
113
Total
Institutional Outflows
(last 12 months)
$700.78M
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TNDM Institutional Buying and Selling by Quarter

Tandem Diabetes Care Major Shareholders & Ownership History

Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
5/21/2025Acadian 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%
5/16/2025 Jacobs Levy Equity Management Inc.1,471,569$28.20M0.1%-11.4%2.209%
5/16/2025 Edmond DE Rothschild Holding S.A.252,600$4.84M0.1%N/A0.379%
5/16/2025 AQR Capital Management LLC12,069$230K0.0%-13.2%0.018%
5/16/2025 Advisors Asset Management Inc.22,460$430K0.0%+8.0%0.034%
5/16/2025 Amundi25,184$445K0.0%-64.0%0.038%
5/15/2025 First Light Asset Management LLC245,257$4.70M0.5%-16.0%0.368%
5/15/2025 Royal Bank of Canada211,666$4.05M0.0%+30.5%0.318%
5/15/2025 DAFNA Capital Management LLC294,208$5.64M1.6%+31.8%0.442%
5/15/2025 Kingdon Capital Management L.L.C.495,229$9.49M1.0%-37.4%0.744%
5/15/2025 State of Wyoming4,467$86K0.0%+49.1%0.007%
5/15/2025 Landscape Capital Management L.L.C.35,942$689K0.1%+83.1%0.054%
5/15/2025 Champlain Investment Partners LLC1,368,888$26.23M0.2%-0.8%2.055%
5/14/2025 Corebridge Financial Inc.34,290$657K0.0%-1.9%0.051%
5/14/2025 Comerica Bank29,692$569K0.0%+6.2%0.045%
5/14/2025 MetLife Investment Management LLC39,091$749K0.0%-1.5%0.059%
5/14/2025 AlphaQuest LLC8,561$164K0.0%+819.5%0.013%
5/14/2025 Capital Fund Management S.A.38,857$744K0.0%-80.6%0.058%
5/14/2025 Hsbc Holdings PLC14,144$270K0.0%-49.1%0.021%
5/13/2025 Northern Trust Corp689,534$13.21M0.0%-1.1%1.035%
5/13/2025 Brooklyn Investment Group3,397$65K0.0%+417.8%0.005%
5/13/2025 Versor Investments LP30,500$584K0.1%N/A0.046%
5/13/2025 Algert Global LLC209,320$4.01M0.1%+133.8%0.314%
5/13/2025 Raymond James Financial Inc.186,628$3.58M0.0%+14.1%0.280%
5/13/2025 Sector Gamma AS180,523$3.46M1.1%N/A0.271%
5/13/2025 Aberdeen Group plc356,218$6.83M0.0%+43.1%0.535%
5/13/2025 Russell Investments Group Ltd.139,094$2.67M0.0%-52.1%0.209%
5/13/2025 HighTower Advisors LLC67,168$1.29M0.0%+604.6%0.101%
5/12/2025 Public Sector Pension Investment Board208,231$3.99M0.0%+27.0%0.313%
5/12/2025 Nuveen LLC308,315$5.91M0.0%N/A0.463%
5/12/2025 Mizuho Markets Americas LLC115,772$2.22M0.0%+36.1%0.174%
Here’s How to Claim Your Stake in Elon’s Private Company, xAI (Ad)

I predict this single breakthrough could make Elon the world’s first trillionaire — and mint more new millionaires than any tech advance in history. And for a limited time, you have the chance to claim a stake in this project, even though it’s housed inside Elon’s private company, xAI.

All the details are waiting for you now — but you need to act before the May 1st funding window clos
5/12/2025 Connor Clark & Lunn Investment Management Ltd.644,988$12.36M0.1%+25.2%0.968%
5/12/2025 Swiss National Bank127,300$2.44M0.0%-1.1%0.191%
5/12/2025 Maryland State Retirement & Pension System19,137$367K0.0%-13.4%0.029%
5/9/2025 Deutsche Bank AG54,164$1.04M0.0%-12.3%0.081%
5/9/2025 Charles Schwab Investment Management Inc.570,150$10.92M0.0%-5.3%0.856%
5/9/2025 Vanguard Group Inc.7,292,169$139.72M0.0%-2.0%10.948%
5/9/2025 iA Global Asset Management Inc.165,380$3.17M0.1%N/A0.248%
5/9/2025 PNC Financial Services Group Inc.19,235$369K0.0%-13.5%0.029%
5/9/2025 Jupiter Asset Management Ltd.87,815$1.68M0.0%N/A0.132%
5/8/2025 Commerce Bank31,767$609K0.0%+18.1%0.048%
5/8/2025Jefferies Financial Group Inc.11,668$224K0.0%+27.4%0.018%
5/8/2025 US Bancorp DE42,688$818K0.0%+10.3%0.064%
5/8/2025 Bayforest Capital Ltd26,288$504K0.2%+197.0%0.039%
5/8/2025 GSA Capital Partners LLP130,595$2.50M0.2%N/A0.196%
5/7/2025 Zurcher Kantonalbank Zurich Cantonalbank 21,449$411K0.0%+19.5%0.032%
5/7/2025 Baillie Gifford & Co.732,574$14.04M0.0%-1.8%1.100%
5/6/2025 Assetmark Inc.1,750$34K0.0%+42.9%0.003%
5/6/2025 Cetera Investment Advisers18,700$358K0.0%+31.8%0.028%
5/6/2025 1492 Capital Management LLC22,446$430K0.2%N/A0.034%
5/5/2025 GW&K Investment Management LLC2,863,987$54.87M0.5%+34.9%4.303%
5/5/2025 Allianz Asset Management GmbH10,700$205K0.0%N/A0.016%
5/5/2025 Hussman Strategic Advisors Inc.63,000$1.21M0.3%N/A0.095%
5/5/2025 Jennison Associates LLC1,477,108$28.30M0.0%+0.7%2.219%
5/2/2025 Victory Capital Management Inc.12,245$235K0.0%-97.8%0.018%
5/2/2025 Apollon Wealth Management LLC11,074$212K0.0%-25.2%0.017%
5/2/2025 Signaturefd LLC1,698$33K0.0%-25.0%0.003%
5/1/2025 Rice Hall James & Associates LLC104,956$2.01M0.1%-0.5%0.158%
5/1/2025 Louisiana State Employees Retirement System30,900$592K0.0%-2.8%0.046%
5/1/2025 Stephens Investment Management Group LLC1,706,915$32.70M0.5%+9.7%2.564%
4/30/2025 Cerity Partners LLC76,005$1.46M0.0%+32.2%0.114%
4/30/2025 Brown Advisory Inc.925,310$17.73M0.0%+1.3%1.390%
4/29/2025 Envestnet Asset Management Inc.318,530$6.10M0.0%+25.4%0.479%
4/28/2025 Principal Financial Group Inc.399,450$7.65M0.0%+2.9%0.600%
4/28/2025 Teacher Retirement System of Texas32,465$622K0.0%+17.8%0.049%
4/25/2025 KBC Group NV193,808$3.71M0.0%+0.7%0.291%
4/24/2025 Mirae Asset Global Investments Co. Ltd.36,060$692K0.0%-88.0%0.054%
4/23/2025 Oppenheimer Asset Management Inc.72,752$1.39M0.0%+17.9%0.109%
4/21/2025 State of Alaska Department of Revenue36,391$697K0.0%-2.5%0.055%
4/21/2025 MN Wealth Advisors LLC10,623$204K0.1%-40.8%0.016%
4/17/2025 Chicago Capital LLC20,726$397K0.0%-97.9%0.031%
4/17/2025 Janney Montgomery Scott LLC38,450$737K0.0%+27.1%0.058%
4/15/2025 SG Americas Securities LLC16,353$313K0.0%+366.4%0.025%
4/15/2025 GAMMA Investing LLC2,202$42K0.0%-54.9%0.003%
4/14/2025 Park Avenue Securities LLC11,708$224K0.0%+31.3%0.018%
4/9/2025 NBC Securities Inc.1,945$37K0.0%N/A0.003%
4/7/2025 GAMMA Investing LLC42,190$808K0.0%+763.3%0.063%
2/27/2025Jefferies Financial Group Inc.9,158$330K0.0%-97.6%0.014%
2/18/2025 Connective Capital Management LLC16,960$611K0.7%N/A0.026%
2/17/2025 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC177,739$6.40M0.0%+20.4%0.271%
2/17/2025 Two Sigma Advisers LP881,783$31.76M0.1%-2.2%1.343%
Here’s How to Claim Your Stake in Elon’s Private Company, xAI (Ad)

I predict this single breakthrough could make Elon the world’s first trillionaire — and mint more new millionaires than any tech advance in history. And for a limited time, you have the chance to claim a stake in this project, even though it’s housed inside Elon’s private company, xAI.

All the details are waiting for you now — but you need to act before the May 1st funding window clos
2/17/2025 Two Sigma Investments LP861,188$31.02M0.1%+4.4%1.311%
2/17/2025 State of Wyoming2,996$108K0.0%+95.9%0.005%
2/17/2025 Shell Asset Management Co.26,281$947K0.0%+16.9%0.040%
2/17/2025 Sherbrooke Park Advisers LLC9,225$332K0.1%N/A0.014%
2/17/2025 Silvercrest Asset Management Group LLC346,565$12.48M0.1%+29.2%0.528%
2/17/2025 Point72 Asia Singapore Pte. Ltd.899$32K0.0%-63.6%0.001%
2/17/2025 Point72 Asset Management L.P.495,311$17.84M0.0%+105.8%0.754%
2/17/2025 Polar Capital Holdings Plc142,900$5.15M0.0%-7.2%0.218%
2/17/2025 ProShare Advisors LLC19,789$713K0.0%+42.5%0.030%
2/17/2025 Quantinno Capital Management LP51,612$1.86M0.0%+65.7%0.079%
(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, 304 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), Geode Capital Management LLC ($55.26M), and GW&K Investment Management LLC ($54.87M).Learn more on TNDM's institutional investors.

Which institutional investors have been buying Tandem Diabetes Care stock?

Of the 252 institutional investors that purchased Tandem Diabetes Care 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 ($2.57M), Eminence Capital LP ($2.37M), GW&K Investment Management LLC ($2.29M), Paradice Investment Management LLC ($1.57M), Hood River Capital Management LLC ($1.28M), and Chicago Capital LLC ($1.12M).

How much institutional buying is happening at Tandem Diabetes Care?

Institutional investors have bought a total of 36,566,656 shares in the last 24 months. This purchase volume represents approximately $1.07B in transactions.

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

Of the 146 institutional investors that sold Tandem Diabetes Care stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Capital World Investors ($5.38M), Marshall Wace LLP ($2.60M), Champlain Investment Partners LLC ($1.93M), FMR LLC ($1.90M), First Light Asset Management LLC ($1.86M), Janus Henderson Group PLC ($1.80M), and Chicago Capital LLC ($1.60M).

How much institutional selling is happening at Tandem Diabetes Care?

Institutional investors have sold a total of 33,504,067 shares in the last 24 months. This volume of shares sold represents approximately $1.08B in transactions.



This page (NASDAQ:TNDM) was last updated on 5/21/2025 by MarketBeat.com Staff
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