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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 2022

Institutional positions in Tandem Diabetes Care Inc as of Jun 30, 2022. 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
331
−41 vs. Q1 2022
Shares held
61.4M
+2.07M (+3.5%) vs. Q1 2022
Total value
$3.64B
−$3.26B (−47.2%) vs. Q1 2022
New holders
37
150 more added
Sold out
78
110 more reduced

7 institutions that held it in Q1 2022 haven't filed for Q2 2022 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q1 2022: 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 2022: 331 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 2022: $3.64B
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 2022

Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q1 2022.

Institutions holding TNDM in Q2 2022
InstitutionSharesValue% of portfolioChange in sharesAction
AdvisorNet Financial, Inc108$6.00K0.00%+108New
First Horizon Advisors, Inc.88$5.00K0.00%−24−21.4%Reduced
Meeder Asset Management Inc83$5.00K0.00%+33+66.0%Added
Ellevest, Inc.89$5.00K0.00%+50+128.2%Added
Parkside Financial Bank & Trust47$3.00K0.00%−23−32.9%Reduced
Massmutual Trust Co FSB58$3.00K0.00%+52+866.7%Added
Lindbrook Capital, LLC49$3.00K0.00%+41+512.5%Added
TCI Wealth Advisors, Inc.37$2.00K0.00%−143−79.4%Reduced
Focused Wealth Management, Inc40$2.00K0.00%00.0%Unchanged
Bessemer Group Inc35$2.00K0.00%00.0%Unchanged
Cambridge Trust Co32$2.00K0.00%00.0%Unchanged
Quent Capital, LLC34$2.00K0.00%00.0%Unchanged
Wagner Wealth Management, LLC35$2.00K0.00%+35New
Neo Ivy Capital Management24$1.00K0.00%−2,256−98.9%Reduced
Montag A & Associates Inc20$1.00K0.00%−35−63.6%Reduced
Money Concepts Capital Corp10$1.00K0.00%−30−75.0%Reduced
Elequin Capital LP9$1.00K0.00%−15−62.5%Reduced
Loomis Sayles & Co L P18$1.00K0.00%−3−14.3%Reduced
Sandy Spring Bank15$1.00K0.00%00.0%Unchanged
EverSource Wealth Advisors, LLC20$1.00K0.00%00.0%Unchanged
Evermay Wealth Management LLC9$1.00K0.00%00.0%Unchanged
Allworth Financial LP12$1.00K0.00%+5+71.4%Added
Crewe Advisors LLC18$1.00K0.00%+18New
Prestige Wealth Management Group LLC23$1.00K0.00%+23New
Bell Investment Advisors, Inc21$1.00K0.00%+21New
Cutler Group LP6$00.00%−1,445−99.6%Reduced
Huntington National Bank11$00.00%00.0%Unchanged
Sterling Investment Advisors, Ltd.7$00.00%00.0%Unchanged
Capital Advisors, Ltd. LLC3$00.00%+1+50.0%Added
USA Financial Portformulas Corp2$00.00%00.0%Unchanged
Steward Financial Group LLC2$00.00%+2New
Jackson Square Partners, LLC0$00.00%−1,499,740−100.0%Sold out
Point72 Asset Management, L.P.0$00.00%−571,669−100.0%Sold out
Lord, Abbett & Co. LLC0$00.00%−480,397−100.0%Sold out
Polar Asset Management Partners Inc.0$00.00%−120,500−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−102,891−100.0%Sold out
Atika Capital Management LLC0$00.00%−84,000−100.0%Sold out
Castleark Management LLC0$00.00%−78,180−100.0%Sold out
Bank of Nova Scotia0$00.00%−65,497−100.0%Sold out
Cinctive Capital Management LP0$00.00%−57,126−100.0%Sold out
Altium Capital Management LP0$00.00%−50,000−100.0%Sold out
State of Tennessee, Treasury Department0$00.00%−30,000−100.0%Sold out
Susquehanna International Group, LLP0$00.00%−29,143−100.0%Sold out
PDT Partners, LLC0$00.00%−26,756−100.0%Sold out
Trexquant Investment LP0$00.00%−26,225−100.0%Sold out
Granite Point Capital Management, L.P.0$00.00%−25,366−100.0%Sold out
Marshall Wace, LLP0$00.00%−24,703−100.0%Sold out
Calamos Advisors LLC0$00.00%−20,349−100.0%Sold out
Endurant Capital Management LP0$00.00%−18,236−100.0%Sold out
Strategic Wealth Partners, Ltd.0$00.00%−11,508−100.0%Sold out
Harbor Capital Advisors, Inc.0$00.00%−10,729−100.0%Sold out
STRS Ohio0$00.00%−10,244−100.0%Sold out
Brookfield Asset Management Inc.0$00.00%−9,697−100.0%Sold out
Diametric Capital, LP0$00.00%−9,500−100.0%Sold out
Manchester Capital Management LLC0$00.00%−8,573−100.0%Sold out
AGF Investments LLC0$00.00%−7,859−100.0%Sold out
Twinbeech Capital LP0$00.00%−7,350−100.0%Sold out
Verition Fund Management LLC0$00.00%−6,663−100.0%Sold out
Tributary Capital Management, LLC0$00.00%−6,400−100.0%Sold out
TrimTabs Asset Management, LLC0$00.00%−6,126−100.0%Sold out
Thoroughbred Financial Services, LLC0$00.00%−5,968−100.0%Sold out
Glaxis Capital Management, LLC0$00.00%−5,000−100.0%Sold out
Brinker Capital Investments, LLC0$00.00%−4,973−100.0%Sold out
Vontobel Holding Ltd.0$00.00%−4,287−100.0%Sold out
Paloma Partners Management Co0$00.00%−3,993−100.0%Sold out
Walleye Trading LLC0$00.00%−3,409−100.0%Sold out
Shelton Capital Management0$00.00%−3,340−100.0%Sold out
Sigma Planning Corp0$00.00%−3,313−100.0%Sold out
Utah Retirement Systems0$00.00%−3,300−100.0%Sold out
Profund Advisors LLC0$00.00%−3,220−100.0%Sold out
Canal Capital Management, LLC0$00.00%−3,000−100.0%Sold out
Roundview Capital LLC0$00.00%−2,746−100.0%Sold out
Occudo Quantitative Strategies LP0$00.00%−2,684−100.0%Sold out
Cetera Advisors LLC0$00.00%−2,586−100.0%Sold out
CIBC Asset Management Inc0$00.00%−2,536−100.0%Sold out
Keebeck Alpha, LP0$00.00%−2,517−100.0%Sold out
Laurel Wealth Advisors, Inc.0$00.00%−2,432−100.0%Sold out
Mackenzie Financial Corp0$00.00%−2,200−100.0%Sold out
Spearhead Capital Advisors, LLC0$00.00%−2,198−100.0%Sold out
American Trust0$00.00%−2,163−100.0%Sold out
Truist Financial Corp0$00.00%−2,096−100.0%Sold out
Los Angeles Capital Management LLC0$00.00%−2,092−100.0%Sold out
Appleton Partners Inc0$00.00%−2,080−100.0%Sold out
Western Wealth Management, LLC0$00.00%−2,008−100.0%Sold out
M&T Bank Corp0$00.00%−1,995−100.0%Sold out
Clarkston Capital Partners, LLC0$00.00%−2,000−100.0%Sold out
Bridgewater Advisors Inc.0$00.00%−2,000−100.0%Sold out
Mount Yale Investment Advisors, LLC0$00.00%−1,946−100.0%Sold out
LVW Advisors, LLC0$00.00%−1,782−100.0%Sold out
Hightower 6M Holding, LLC0$00.00%−1,769−100.0%Sold out
Derbend Asset Management0$00.00%−1,347−100.0%Sold out
Oak Thistle LLC0$00.00%−1,738−100.0%Sold out
Simplex Trading, LLC0$00.00%−1,713−100.0%Sold out
Pacer Advisors, Inc.0$00.00%−1,483−100.0%Sold out
Nkcfo LLC0$00.00%−655−100.0%Sold out
Sandy Cove Advisors, LLC0$00.00%−392−100.0%Sold out
Altshuler Shaham Ltd0$00.00%−365−100.0%Sold out
Exane Derivatives0$00.00%−280−100.0%Sold out
Fortitude Advisory Group L.L.C.0$00.00%−148−100.0%Sold out
Prospera Financial Services Inc0$00.00%−50−100.0%Sold out