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 2026
Institutional positions in Tandem Diabetes Care Inc as of Jun 30, 2026. 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
- 274
- +3 vs. Q1 2026
- Shares held
- 78.7M
- +94.9K (+0.1%) vs. Q1 2026
- Total value
- $1.19B
- −$319.1M (−21.2%) vs. Q1 2026
- New holders
- 48
- 95 more added
- Sold out
- 45
- 91 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 274 | $1.19B |
| Q1 2026 | 274 | $1.51B |
| Q4 2025 | 269 | $1.65B |
| Q3 2025 | 255 | $911.3M |
| Q2 2025 | 271 | $1.51B |
| Q1 2025 | 275 | $1.40B |
| Q4 2024 | 316 | $2.60B |
| Q3 2024 | 332 | $3.10B |
| Q2 2024 | 317 | $2.96B |
| Q1 2024 | 291 | $2.63B |
| Q4 2023 | 268 | $2.10B |
| Q3 2023 | 226 | $1.45B |
| Q2 2023 | 247 | $1.65B |
| Q1 2023 | 274 | $2.77B |
| Q4 2022 | 295 | $2.89B |
| Q3 2022 | 299 | $3.00B |
| Q2 2022 | 331 | $3.64B |
| Q1 2022 | 379 | $6.92B |
| Q4 2021 | 388 | $9.09B |
| Q3 2021 | 338 | $7.32B |
| Q2 2021 | 303 | $5.75B |
| Q1 2021 | 290 | $5.08B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Evolution Advisers, Inc. | 5 | $0 | 0.00% | +5 | New |
| Huntington National Bank | 1 | $15 | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Trust Services, Inc. | 1 | $15 | 0.00% | +1 | New |
| Davis Capital Management | 4 | $60 | 0.00% | +4 | New |
| Gilpin Wealth Management, LLC | 9 | $136 | 0.00% | −3−25.0% | Reduced |
| Ankerstar Wealth, LLC | 11 | $166 | 0.00% | 00.0% | Unchanged |
| Plante Moran Financial Advisors, LLC | 11 | $166 | 0.00% | +11 | New |
| Cedar Mountain Advisors, LLC | 12 | $181 | 0.00% | 00.0% | Unchanged |
| Accordant Advisory Group Inc | 12 | $182 | 0.00% | 00.0% | Unchanged |
| Aventura Private Wealth, LLC | 16 | $241 | 0.00% | +16 | New |
| Transamerica Financial Advisors, Inc. | 17 | $256 | 0.00% | −372−95.6% | Reduced |
| JFS Wealth Advisors, LLC | 24 | $363 | 0.00% | +9+60.0% | Added |
| Silver Grove Financial Group, Inc. | 27 | $407 | 0.00% | +27 | New |
| SBI Securities Co., Ltd. | 28 | $423 | 0.00% | 00.0% | Unchanged |
| Eastern Bank | 32 | $483 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 35 | $529 | 0.00% | +35 | New |
| Golden State Wealth Management, LLC | 41 | $619 | 0.00% | 00.0% | Unchanged |
| Signature Equity Partners, LLC | 41 | $619 | 0.00% | +41 | New |
| Bare Financial Services, Inc | 42 | $634 | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 40 | $676 | 0.00% | 00.0% | Unchanged |
| Archer Investment Corp | 45 | $679 | 0.00% | +45 | New |
| Farmers & Merchants Investments Inc | 50 | $755 | 0.00% | 00.0% | Unchanged |
| IFG Advisory, LLC | 50 | $755 | 0.00% | +50 | New |
| Ritter Daniher Financial Advisory LLC | 50 | $755 | 0.00% | +50 | New |
| Parkside Financial Bank & Trust | 56 | $846 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 60 | $905 | 0.00% | 00.0% | Unchanged |
| ZRC Wealth Management, LLC | 60 | $906 | 0.00% | +46+328.6% | Added |
| Parallel Advisors, LLC | 65 | $981 | 0.00% | −200−75.5% | Reduced |
| Bessemer Group Inc | 90 | $1.00K | 0.00% | 00.0% | Unchanged |
| Elequin Capital LP | 67 | $1.01K | 0.00% | +43+179.2% | Added |
| Fortitude Family Office, LLC | 70 | $1.06K | 0.00% | −27−27.8% | Reduced |
| Keating Financial Advisory Services, Inc. | 77 | $1.16K | 0.00% | 00.0% | Unchanged |
| Quarry LP | 96 | $1.45K | 0.00% | +96 | New |
| Toth Financial Advisory Corp | 100 | $1.51K | 0.00% | 00.0% | Unchanged |
| Continuum Advisory, LLC | 100 | $1.51K | 0.00% | +100 | New |
| Front Row Advisors LLC | 100 | $2.34K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 164 | $2.48K | 0.00% | +95+137.7% | Added |
| SJS Investment Consulting Inc. | 165 | $2.49K | 0.00% | −156−48.6% | Reduced |
| National Bank of Canada | 183 | $2.76K | 0.00% | +183 | New |
| Harbour Investments, Inc. | 204 | $3.08K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 205 | $3.09K | 0.00% | −2−1.0% | Reduced |
| Colonial Trust Co | 215 | $3.40K | 0.00% | +93+76.2% | Added |
| Sterling Capital Management LLC | 245 | $3.70K | 0.00% | −194−44.2% | Reduced |
| Rockefeller Capital Management L.P. | 260 | $3.92K | 0.00% | −173−40.0% | Reduced |
| Essential Partners LLC | 265 | $4.00K | 0.00% | −2,623−90.8% | Reduced |
| Rothschild Investment LLC | 269 | $4.06K | 0.00% | +136+102.3% | Added |
| Northwestern Mutual Wealth Management Co | 290 | $4.38K | 0.00% | −1,344−82.3% | Reduced |
| Fulcrum Asset Management LLP | 280 | $4.43K | 0.00% | +280 | New |
| Quent Capital, LLC | 309 | $4.66K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 328 | $4.95K | 0.00% | −3,007−90.2% | Reduced |
| Los Angeles Capital Management LLC | 348 | $5.25K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 403 | $6.00K | 0.00% | +18+4.7% | Added |
| Larson Financial Group LLC | 426 | $6.43K | 0.00% | −378−47.0% | Reduced |
| Optiver Holding B.V. | 434 | $6.55K | 0.00% | +426+5,325.0% | Added |
| Umb Bank N A | 437 | $6.59K | 0.00% | −7−1.6% | Reduced |
| Signaturefd, LLC | 452 | $6.82K | 0.00% | −25−5.2% | Reduced |
| Smartleaf Asset Management LLC | 440 | $6.96K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 500 | $7.54K | 0.00% | −4,500−90.0% | Reduced |
| Salomon & Ludwin, LLC | 595 | $9.37K | 0.00% | −181−23.3% | Reduced |
| Massmutual Trust Co FSB | 707 | $10.7K | 0.00% | +707 | New |
| Hantz Financial Services, Inc. | 828 | $12.0K | 0.00% | +107+14.8% | Added |
| Nykredit A/S | 825 | $12.4K | 0.00% | +825 | New |
| Aster Capital Management (DIFC) Ltd | 873 | $13.2K | 0.00% | −957−52.3% | Reduced |
| Salem Investment Counselors Inc | 1,000 | $15.1K | 0.00% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,098 | $16.6K | 0.00% | −250−18.5% | Reduced |
| EverSource Wealth Advisors, LLC | 1,130 | $17.1K | 0.00% | −192−14.5% | Reduced |
| Allworth Financial LP | 1,138 | $17.2K | 0.00% | +493+76.4% | Added |
| CoreCap Advisors, LLC | 1,164 | $17.6K | 0.00% | −119−9.3% | Reduced |
| Global Retirement Partners, LLC | 1,167 | $17.6K | 0.00% | +1,167 | New |
| Nisa Investment Advisors, LLC | 1,237 | $18.7K | 0.00% | −1,545−55.5% | Reduced |
| Wellington-Altus USA Inc. | 1,151 | $22.1K | 0.02% | 00.0% | Unchanged |
| First Horizon Corp | 1,639 | $24.7K | 0.00% | +21+1.3% | Added |
| GAMMA Investing LLC | 1,644 | $24.8K | 0.00% | −1,858−53.1% | Reduced |
| AdvisorNet Financial, Inc | 1,680 | $25.4K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 1,750 | $26.4K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 1,797 | $27.1K | 0.00% | −412−18.7% | Reduced |
| KBC Group NV | 2,011 | $30.0K | 0.00% | 00.0% | Unchanged |
| Stonehage Fleming Financial Services Holdings Ltd | 2,551 | $38.5K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 2,863 | $43.3K | 0.00% | −258−8.3% | Reduced |
| Tower Research Capital LLC (TRC) | 2,994 | $45.2K | 0.00% | −6,153−67.3% | Reduced |
| Pinnacle Wealth Planning Services, Inc. | 3,086 | $46.6K | 0.00% | +13+0.4% | Added |
| Advisor Group Holdings, Inc. | 3,111 | $46.9K | 0.00% | +523+20.2% | Added |
| Creative Financial Designs Inc | 3,431 | $51.8K | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 3,380 | $53.2K | 0.00% | +3,365+22,433.3% | Added |
| State of Wyoming | 3,571 | $53.9K | 0.01% | −14,393−80.1% | Reduced |
| Quantbot Technologies LP | 3,662 | $55.3K | 0.00% | +1,377+60.3% | Added |
| Bayforest Capital Ltd | 3,792 | $57.2K | 0.05% | −3,473−47.8% | Reduced |
| Virtus ETF Advisers LLC | 4,511 | $68.1K | 0.03% | +111+2.5% | Added |
| Ensign Peak Advisors, Inc | 5,032 | $75.9K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 5,996 | $90.5K | 0.00% | +5,248+701.6% | Added |
| Caption Management, LLC | 6,200 | $93.6K | 0.00% | +6,200 | New |
| Ameritas Investment Partners, Inc. | 6,340 | $95.7K | 0.00% | +754+13.5% | Added |
| Mitsubishi UFJ Trust & Banking Corp | 7,494 | $113.1K | 0.00% | +7,494 | New |
| Public Employees Retirement Association of Colorado | 7,650 | $115.0K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 8,795 | $133.0K | 0.00% | −24,227−73.4% | Reduced |
| Prosperitas Financial LLC | 10,000 | $150.9K | 0.05% | 00.0% | Unchanged |
| Victory Capital Management Inc | 10,469 | $158.0K | 0.00% | −414−3.8% | Reduced |
| Pictet Asset Management Holding SA | 10,764 | $162.4K | 0.00% | 00.0% | Unchanged |
| Bridgefront Capital, LLC | 10,844 | $163.6K | 0.04% | +10,844 | New |
| Quadrature Capital Ltd | 10,898 | $164.5K | 0.00% | +10,898 | New |