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Tandem Diabetes Care Inc

TNDM
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
SEC CIK
0001438133

No open-market purchases or sales by Tandem Diabetes Care Inc insiders were filed in the last 90 days; 274 institutions reported holding it in 13F filings for Q2 2026, worth $1.19B in total; no superinvestor holds it.

13F holders, Q2 2023

Institutional positions in Tandem Diabetes Care Inc as of Jun 30, 2023. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
247
−27 vs. Q1 2023
Shares held
67.2M
−905.2K (−1.3%) vs. Q1 2023
Total value
$1.65B
−$1.12B (−40.3%) vs. Q1 2023
New holders
35
88 more added
Sold out
62
89 more reduced

Compare with Q1 2023: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting TNDM on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ2 2023: 247 institutions
Q1 2021: 290 institutionsQ2 2021: 303 institutionsQ3 2021: 338 institutionsQ4 2021: 388 institutionsQ1 2022: 379 institutionsQ2 2022: 331 institutionsQ3 2022: 299 institutionsQ4 2022: 295 institutionsQ1 2023: 274 institutionsQ2 2023: 247 institutionsQ3 2023: 226 institutionsQ4 2023: 268 institutionsQ1 2024: 291 institutionsQ2 2024: 317 institutionsQ3 2024: 332 institutionsQ4 2024: 316 institutionsQ1 2025: 275 institutionsQ2 2025: 271 institutionsQ3 2025: 255 institutionsQ4 2025: 269 institutionsQ1 2026: 274 institutionsQ2 2026: 274 institutions
Value heldQ2 2023: $1.65B
Q1 2021: $5.08BQ2 2021: $5.75BQ3 2021: $7.32BQ4 2021: $9.09BQ1 2022: $6.92BQ2 2022: $3.64BQ3 2022: $3.00BQ4 2022: $2.89BQ1 2023: $2.77BQ2 2023: $1.65BQ3 2023: $1.45BQ4 2023: $2.10BQ1 2024: $2.63BQ2 2024: $2.96BQ3 2024: $3.10BQ4 2024: $2.60BQ1 2025: $1.40BQ2 2025: $1.51BQ3 2025: $911.3MQ4 2025: $1.65BQ1 2026: $1.51BQ2 2026: $1.19B
Institutions holding TNDM and their total value by quarter
QuarterHoldersValue
Q2 2026274$1.19B
Q1 2026274$1.51B
Q4 2025269$1.65B
Q3 2025255$911.3M
Q2 2025271$1.51B
Q1 2025275$1.40B
Q4 2024316$2.60B
Q3 2024332$3.10B
Q2 2024317$2.96B
Q1 2024291$2.63B
Q4 2023268$2.10B
Q3 2023226$1.45B
Q2 2023247$1.65B
Q1 2023274$2.77B
Q4 2022295$2.89B
Q3 2022299$3.00B
Q2 2022331$3.64B
Q1 2022379$6.92B
Q4 2021388$9.09B
Q3 2021338$7.32B
Q2 2021303$5.75B
Q1 2021290$5.08B

Institutions, Q2 2023

Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q1 2023.

Institutions holding TNDM in Q2 2023
InstitutionSharesValue% of portfolioChange in sharesAction
GPS Wealth Strategies Group, LLC658$16.1K0.00%00.0%Unchanged
Acadian Asset Management LLC669$16.0K0.00%00.0%Unchanged
Headlands Technologies LLC549$13.5K0.00%+314+133.6%Added
Farther Finance Advisors, LLC505$12.4K0.00%+5+1.0%Added
CWM, LLC475$12.0K0.00%−1,184−71.4%Reduced
Allspring Global Investments Holdings, LLC390$9.57K0.00%−4,087−91.3%Reduced
Banque Cantonale Vaudoise371$9.00K0.00%−124−25.1%Reduced
Toth Financial Advisory Corp325$7.98K0.00%+100+44.4%Added
Harbour Investments, Inc.266$6.53K0.00%00.0%Unchanged
FinTrust Capital Advisors, LLC130$5.84K0.00%00.0%Unchanged
Covestor Ltd200$5.00K0.00%−1−0.5%Reduced
Beacon Capital Management, LLC202$4.96K0.00%00.0%Unchanged
Fifth Third Bancorp182$4.47K0.00%−351−65.9%Reduced
IFP Advisors, Inc241$3.48K0.00%−26−9.7%Reduced
Zions Bancorporation, N.A.138$3.39K0.00%−13−8.6%Reduced
Kistler-Tiffany Companies, LLC125$3.07K0.00%00.0%Unchanged
Signaturefd, LLC116$2.85K0.00%−2−1.7%Reduced
Quent Capital, LLC111$2.72K0.00%00.0%Unchanged
MCF Advisors LLC100$2.45K0.00%+100New
Lindbrook Capital, LLC93$2.28K0.00%−152−62.0%Reduced
Umb Bank N A84$2.06K0.00%00.0%Unchanged
Front Row Advisors LLC100$2.00K0.00%00.0%Unchanged
Loomis Sayles & Co L P79$2.00K0.00%+79New
CarsonAllaria Wealth Management, Ltd.75$1.84K0.00%00.0%Unchanged
NewSquare Capital LLC65$1.59K0.00%00.0%Unchanged
National Bank of Canada63$1.54K0.00%−141−69.1%Reduced
Massmutual Trust Co FSB58$1.42K0.00%+6+11.5%Added
Farmers & Merchants Investments Inc45$1.10K0.00%+20+80.0%Added
Coastal Capital Group, Inc.43$1.05K0.00%00.0%Unchanged
Versant Capital Management, Inc42$1.03K0.00%−476−91.9%Reduced
Parallel Advisors, LLC42$1.03K0.00%−10−19.2%Reduced
Fiduciary Alliance LLC42$1.03K0.00%+42New
AlphaMark Advisors, LLC30$1.00K0.00%00.0%Unchanged
Focused Wealth Management, Inc40$9820.00%00.0%Unchanged
Cambridge Trust Co32$7850.00%00.0%Unchanged
Allworth Financial LP26$6390.00%−11−29.7%Reduced
Baker Avenue Asset Management, LP26$6380.00%+10+62.5%Added
Prestige Wealth Management Group LLC24$5890.00%−1−4.0%Reduced
Huntington National Bank23$5650.00%00.0%Unchanged
Maryland Capital Advisors Inc.20$4910.00%+20New
Elequin Capital LP17$4170.00%+17New
Glassman Wealth Services16$3930.00%−44−73.3%Reduced
Parkside Financial Bank & Trust13$3200.00%−236−94.8%Reduced
EverSource Wealth Advisors, LLC10$2450.00%00.0%Unchanged
Abound Wealth Management7$1720.00%+7New
Bell Investment Advisors, Inc4$990.00%−38−90.5%Reduced
USA Financial Portformulas Corp2$490.00%00.0%Unchanged
Tri Locum Partners LP0$00.00%−417,448−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−280,192−100.0%Sold out
Adage Capital Partners GP, L.L.C.0$00.00%−250,000−100.0%Sold out
Soleus Capital Management, L.P.0$00.00%−203,300−100.0%Sold out
WCM Investment Management, LLC0$00.00%−151,103−100.0%Sold out
Atika Capital Management LLC0$00.00%−145,350−100.0%Sold out
Sessa Capital IM, L.P.0$00.00%−121,820−100.0%Sold out
Banque Pictet & Cie SA0$00.00%−98,088−100.0%Sold out
Canada Pension Plan Investment Board0$00.00%−88,700−100.0%Sold out
Lombard Odier Asset Management (Switzerland) SA0$00.00%−70,881−100.0%Sold out
Brookfield Asset Management Inc.0$00.00%−56,816−100.0%Sold out
Millrace Asset Group, Inc.0$00.00%−44,767−100.0%Sold out
Chartwell Investment Partners, LLC0$00.00%−21,423−100.0%Sold out
Hawk Ridge Capital Management LP0$00.00%−21,200−100.0%Sold out
B. Metzler seel. Sohn & Co. AG0$00.00%−19,209−100.0%Sold out
Natixis0$00.00%−18,151−100.0%Sold out
LMR Partners LLP0$00.00%−18,069−100.0%Sold out
PDT Partners, LLC0$00.00%−17,886−100.0%Sold out
Axq Capital, LP0$00.00%−17,184−100.0%Sold out
Maverick Capital LtdSuperinvestorMaverick Capital0$00.00%−15,615−100.0%Sold out
Granite Point Capital Management, L.P.0$00.00%−15,000−100.0%Sold out
Bank Julius Baer & Co. Ltd, Zurich0$00.00%−14,997−100.0%Sold out
Bank of Montreal0$00.00%−12,664−100.0%Sold out
American Century Companies Inc0$00.00%−12,391−100.0%Sold out
Bokf, NA0$00.00%−12,091−100.0%Sold out
Versor Investments LP0$00.00%−9,457−100.0%Sold out
Landscape Capital Management, L.L.C.0$00.00%−9,208−100.0%Sold out
Cetera Advisor Networks LLC0$00.00%−9,050−100.0%Sold out
Empire Financial Management Company, LLC0$00.00%−8,750−100.0%Sold out
JustInvest LLC0$00.00%−8,598−100.0%Sold out
Xponance, Inc.0$00.00%−8,233−100.0%Sold out
AtonRa Partners0$00.00%−7,378−100.0%Sold out
Truist Financial Corp0$00.00%−7,190−100.0%Sold out
Teacher Retirement System of Texas0$00.00%−7,151−100.0%Sold out
Pictet Asset Management SA0$00.00%−7,082−100.0%Sold out
Prelude Capital Management, LLC0$00.00%−6,514−100.0%Sold out
Cambridge Investment Research Advisors, Inc.0$00.00%−6,388−100.0%Sold out
Pictet & Cie (Europe) SA0$00.00%−6,377−100.0%Sold out
CI Private Wealth, LLC0$00.00%−6,272−100.0%Sold out
Financial Alternatives, Inc0$00.00%−6,223−100.0%Sold out
Creative Planning0$00.00%−5,687−100.0%Sold out
Tarbox Family Office, Inc.0$00.00%−5,509−100.0%Sold out
Roundview Capital LLC0$00.00%−5,344−100.0%Sold out
Oppenheimer Asset Management Inc.0$00.00%−5,259−100.0%Sold out
Healthcare of Ontario Pension Plan Trust Fund0$00.00%−5,258−100.0%Sold out
MML Investors Services, LLC0$00.00%−5,180−100.0%Sold out
AQR Capital Management LLC0$00.00%−4,945−100.0%Sold out
Ameritas Advisory Services, LLC0$00.00%−485−100.0%Sold out
Edmond de Rothschild Holding S.A.0$00.00%−380−100.0%Sold out
Belpointe Asset Management LLC0$00.00%−350−100.0%Sold out
Riverview Trust Co0$00.00%−338−100.0%Sold out
International Assets Investment Management, LLC0$00.00%−165−100.0%Sold out
Machina Capital S.A.S.0$00.00%−100−100.0%Sold out