TANDEM DIABETES CARE INC

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TNDM·875372203·US·Common Stock·Healthcare - Medical Devices-13D/G

TNDM (TANDEM DIABETES CARE INC) is held by 137 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($174.8M), VANGUARD PORTFOLIO MANAGEMENT LLC ($64.9M), VANGUARD CAPITAL MANAGEMENT LLC ($46.7M). Net institutional sentiment: Mixed.

137

Holders

(11 Elite)

$888.5M

Total Value

52% (145)

Consensus

75 buying - 70 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)65

Insider (Form 4)39

Activist (13D/13G)62

Congressional (STOCK Act)36

Holder Quality

86

★★★★★

Elite

56

★★★★

Strong

14

★★★

Solid

52

★★

Below

89

★

Weak

Held by 137 funds

11 elite

Who's Trading

Source dates: Price Sep 21, 2026 · Insiders Aug 18, 2026 · Activists Aug 6, 2026 · Congress none

InsiderMSMorrison SusanTax 495 shAug 15, 2026

InsiderMSMorrison SusanTax 314 shAug 15, 2026

InsiderMSMorrison SusanExercise 1K shAug 15, 2026

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Top Holders

Top Holders (137)History

AllNewIncreasedHeldDecreasedExited

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	11.6M(+8.3%)	$174.8M	0.0%	-50.43%	33
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	4.3M(+7.7%)	$64.9M	0.0%	-29.60%	32
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	3.1M(+1.9%)	$46.7M	0.0%	-30.96%	30
STATE STREET CORP	Increased	2.9M(+7.1%)	$43M	0.0%	-46.16%	31
JENNISON ASSOCIATES LLC	Increased	2.3M(+40.6%)	$35.2M	0.0%	-29.56%	38
JACOBS LEVY EQUITY MANAGEMENT, INC	Increased	2M(+31.7%)	$30.3M	0.1%	-42.86%	44
Freestone Grove Partners LP	Increased	1.9M(+40.2%)	$28.2M	0.2%	+27.82%	46
GEODE CAPITAL MANAGEMENT, LLC	Increased	1.8M(+7.2%)	$27.2M	0.0%	-64.78%	31
DRIEHAUS CAPITAL MANAGEMENT LLC	Decreased	1.8M(-22.4%)	$27M	0.2%	-28.85%	0
CITADEL ADVISORS LLC	Decreased	1.7M(-20.8%)	$26.2M	0.0%	-28.01%	0
MILLENNIUM MANAGEMENT LLC	Increased	1.3M(+72.2%)	$19.8M	0.0%	-15.13%	42
Woodline Partners LP	New	1.3M	$19.7M	0.1%	+7.89%	39
UBS Group AG	Decreased	1.1M(-44.0%)	$17.3M	0.0%	-33.04%	0
FMR LLC	Increased	976,432(+36.8%)	$14.7M	0.0%	-25.39%	37
ROYCE & ASSOCIATES LP	Increased	900,590(+29.3%)	$13.6M	0.1%	+9.84%	42
WELLINGTON MANAGEMENT GROUP LLP	Decreased	871,811(-16.4%)	$13.2M	0.0%	-31.09%	0
GOLDMAN SACHS GROUP INC	Decreased	862,301(-61.1%)	$13M	0.0%	-34.00%	0
NORTHERN TRUST CORP	Increased	753,690(+6.7%)	$11.4M	0.0%	-70.23%	30
Verition Fund Management LLC	Increased	700,000(+553.5%)	$10.6M	0.1%	-0.38%	45
ExodusPoint Capital Management, LP	Increased	691,789(+9.3%)	$10.4M	0.1%	-29.23%	30

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer