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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.

Q3 2021 vs. Q2 2021

How the institutions holding Tandem Diabetes Care Inc changed between Q2 2021 and Q3 2021.

All holders in Q3 2021All holders in Q2 2021

13F holders of TNDM: Q2 2021 compared with Q3 2021
MeasureQ2 2021Of which not filed for Q3 2021Q3 2021Change
Holders3036338+41
Shares59.0M226.9K61.3M+2.48M (+4.2%)
Value$5.75B$22.1M$7.32B+$1.59B (+27.8%)

6 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so the changes leave them out.

New holders (80)

Institutions that held Tandem Diabetes Care Inc at the end of Q3 2021 but not at the end of Q2 2021.

Institutions new to TNDM in Q3 2021
InstitutionSharesValue% of portfolio
Pictet Asset Management SA288,410$34.4M0.04%
CIBC Private Wealth Group, LLC139,811$16.7M0.04%
Kingdon Capital Management, L.L.C.111,000$13.3M2.32%
Retirement Systems of Alabama81,609$9.74M0.04%
Manufacturers Life Insurance Company, The72,529$8.66M0.01%
KBC Group NV61,157$7.30M0.03%
1832 Asset Management L.P.60,000$7.24M0.01%
Texas Permanent School Fund46,625$5.57M0.07%
Castleark Management LLC30,990$3.70M0.14%
CastleArk Alternatives, LLC30,990$3.70M0.14%
Comerica Bank28,557$3.63M0.02%
MetLife Investment Management30,280$3.61M0.03%
State of Tennessee, Treasury Department30,000$3.58M0.01%
First Trust Advisors LP24,452$2.92M0.00%
Oregon Public Employees Retirement Fund21,096$2.52M0.03%
Commonwealth of Pennsylvania Public School Empls Retrmt Sys20,823$2.49M0.03%
Magnetar Financial LLC19,846$2.37M0.02%
Quantitative Investment Management, LLC19,605$2.34M0.21%
Thrivent Financial for Lutherans19,287$2.30M0.00%
Connor, Clark & Lunn Investment Management Ltd.17,200$2.05M0.01%
Ameritas Investment Partners, Inc.16,696$1.99M0.07%
Louisiana State Employees Retirement System16,100$1.92M0.05%
Tributary Capital Management, LLC15,900$1.90M0.15%
Marshall Wace, LLP15,804$1.89M0.01%
State of Michigan Retirement System15,800$1.89M0.01%
EAM Investors, LLC15,622$1.86M0.31%
Capital Fund Management S.A.15,094$1.80M0.05%
Twin Capital Management Inc14,045$1.68M0.17%
Seven Eight Capital, LP13,514$1.61M0.16%
New Mexico Educational Retirement Board13,000$1.55M0.05%
Ensign Peak Advisors, Inc12,900$1.53M0.00%
ETF Managers Group, LLC11,417$1.37M0.03%
Northwestern Mutual Investment Management Company, LLC10,412$1.24M0.02%
State of Alaska, Department of Revenue9,675$1.16M0.01%
Baird Financial Group, Inc.9,052$1.08M0.00%
Teachers Retirement System of the State of Kentucky9,000$1.07M0.01%
Avestar Capital, LLC8,875$1.06M0.21%
Walleye Capital LLC8,247$985.0K0.03%
Maverick Capital LtdSuperinvestorMaverick Capital7,320$874.0K0.01%
Securian Asset Management, Inc5,652$675.0K0.01%
Partners Group Holding AG5,171$617.0K0.04%
Bayesian Capital Management, LP4,900$585.0K0.17%
Pacer Advisors, Inc.4,541$542.0K0.01%
Landsberg, Bennett, & Dubbaneh LLC4,291$520.0K0.07%
Synovus Financial Corp4,139$499.0K0.01%
Range Financial Group LLC4,154$496.0K0.36%
Vontobel Holding Ltd.3,917$468.0K0.00%
O'Neil Global Advisors, Inc.3,825$457.0K0.35%
Profund Advisors LLC3,768$450.0K0.02%
JB Capital LLC3,762$449.0K0.06%
New York State Teachers Retirement System3,587$428.0K0.00%
Zions Bancorporation, N.A.3,123$373.0K0.04%
SG3 Management, LLC3,000$358.0K0.13%
Keebeck Alpha, LP2,537$303.0K0.09%
PEAK6 Investments LLC2,472$295.0K0.01%
Bridgewater Advisors Inc.2,100$251.0K0.07%
World Asset Management Inc2,086$249.0K0.02%
Axiom Investment Management LLC2,000$239.0K0.24%
Cigna Investments Inc1,978$236.0K0.02%
Truist Financial Corp1,925$230.0K0.00%
Clarkston Capital Partners, LLC1,802$215.0K0.00%
Chicago Partners Investment Group LLC1,607$215.0K0.02%
IBM Retirement Fund1,754$209.0K0.02%
CIBC World Markets Inc.1,739$208.0K0.00%
Crossmark Global Holdings, Inc.1,740$208.0K0.00%
AQR Capital Management LLC1,705$204.0K0.00%
Cahill Financial Advisors Inc651$78.0K0.02%
Altshuler Shaham Ltd439$53.0K0.00%
Neo Ivy Capital Management142$14.0K0.02%
Sandy Spring Bank100$12.0K0.00%
Jacobi Capital Management LLC100$12.0K0.00%
Fifth Third Bancorp56$7.00K0.00%
Ellevest, Inc.61$7.00K0.00%
Bell Investment Advisors, Inc42$5.00K0.00%
Liberty Wealth Management LLC35$4.00K0.00%
Meeder Asset Management Inc18$2.00K0.00%
Huntington National Bank11$1.00K0.00%
Gerber Kawasaki Wealth & Investment Management14$1.00K0.00%
Meridian Wealth Partners, LLC7$1.00K0.00%
Ci Investments Inc.3$00.00%

Sold out (39)

Institutions that held Tandem Diabetes Care Inc at the end of Q2 2021 and filed for Q3 2021 without it.

Institutions that sold out of TNDM in Q3 2021
InstitutionShares, Q2 2021Value, Q2 2021
Two Sigma Investments, LP166,041$16.2M
Royce & Associates LP78,286$7.63M
Landscape Capital Management, L.L.C.38,336$3.73M
Two Sigma Advisers, LP37,825$3.68M
Jane Street Group, LLC19,845$1.93M
Sante Capital Fund, LP17,083$1.66M
HRT Financial LP16,189$1.58M
Tudor Investment Corp Et Al13,148$1.28M
Edmond de Rothschild Holding S.A.8,926$870.0K
Bridgefront Capital, LLC6,907$673.0K
APG Asset Management N.V.7,700$632.0K
Paloma Partners Management Co5,922$577.0K
Occudo Quantitative Strategies LP5,619$547.0K
Jump Financial, LLC5,423$529.0K
Pearl River Capital, LLC4,993$486.0K
Wolverine Trading, LLC4,412$442.0K
Echo Street Capital Management LLC4,217$411.0K
Fox Run Management, L.L.C.3,901$380.0K
Dynamic Technology Lab Private Ltd3,870$377.0K
NN Investment Partners Holdings N.V.3,700$360.0K
Campbell & CO Investment Adviser LLC3,100$302.0K
Weld Capital Management LLC2,999$292.0K
Cornerstone Investment Partners, LLC2,645$258.0K
Laurel Wealth Advisors, Inc.2,632$256.0K
Gotham Asset Management, LLC2,566$250.0K
Gsa Capital Partners LLP2,092$204.0K
Point72 Hong Kong Ltd1,320$129.0K
Panagora Asset Management Inc1,281$125.0K
Leonteq Securities AG800$77.9K
Compagnie Lombard Odier SCmA670$65.0K
Cutler Group LP325$31.0K
Wolverine Asset Management LLC77$7.00K
AlphaMark Advisors, LLC40$4.00K
Advisory Services Network, LLC42$4.00K
Eubel Brady & Suttman Asset Management Inc10$1.00K
CVA Family Office, LLC15$1.00K
Bartlett & Co. Wealth Management LLC3$292
Signaturefd, LLC1$0
Bartlett & Co. LLC3$0

Not filed for Q3 2021 yet (6)

Institutions that held Tandem Diabetes Care Inc at the end of Q2 2021 and haven't filed a 13F for Q3 2021. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding TNDM in Q2 2021 that haven't filed for Q3 2021
InstitutionShares, Q2 2021Value, Q2 2021
Pictet Asset Management Ltd209,652$20.4M
Kensington Investment Counsel, LLC12,611$1.23M
Coe Capital Management, LLC4,164$406.0K
Hoover Financial Advisors, Inc.262$26.0K
CWM, LLC166$16.0K
Castleview Partners, LLC40$4.00K