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, Q4 2025
Institutional positions in Tandem Diabetes Care Inc as of Dec 31, 2025. 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
- 269
- +21 vs. Q3 2025
- Shares held
- 74.9M
- +524.4K (+0.7%) vs. Q3 2025
- Total value
- $1.65B
- +$743.2M (+82.4%) vs. Q3 2025
- New holders
- 53
- 85 more added
- Sold out
- 32
- 99 more reduced
7 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: 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, Q4 2025
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Dunhill Financial, LLC | 1 | $19 | 0.00% | +1 | New |
| Huntington National Bank | 1 | $22 | 0.00% | 00.0% | Unchanged |
| Gilpin Wealth Management, LLC | 5 | $110 | 0.00% | +5 | New |
| Abound Wealth Management | 6 | $132 | 0.00% | 00.0% | Unchanged |
| Nemes Rush Group LLC | 8 | $176 | 0.00% | +8 | New |
| SJS Investment Consulting Inc. | 11 | $242 | 0.00% | +11 | New |
| Ankerstar Wealth, LLC | 11 | $242 | 0.00% | +11 | New |
| JFS Wealth Advisors, LLC | 15 | $330 | 0.00% | 00.0% | Unchanged |
| International Assets Investment Management, LLC | 15 | $330 | 0.00% | +15 | New |
| SBI Securities Co., Ltd. | 20 | $440 | 0.00% | −5−20.0% | Reduced |
| Cedar Mountain Advisors, LLC | 20 | $440 | 0.00% | +20 | New |
| CIBC Private Wealth Group, LLC | 21 | $462 | 0.00% | +15+250.0% | Added |
| Federated Hermes, Inc. | 25 | $550 | 0.00% | +25 | New |
| Basecamp Wealth Advisors LLC | 25 | $550 | 0.00% | +25 | New |
| Eastern Bank | 32 | $703 | 0.00% | 00.0% | Unchanged |
| Cornerstone Planning Group LLC | 40 | $764 | 0.00% | −83−67.5% | Reduced |
| Bell Investment Advisors, Inc | 36 | $792 | 0.00% | +32+800.0% | Added |
| ORG Partners LLC | 40 | $879 | 0.00% | +40 | New |
| Flagship Harbor Advisors, LLC | 49 | $1.08K | 0.00% | +49 | New |
| Farmers & Merchants Investments Inc | 50 | $1.10K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 56 | $1.23K | 0.00% | +32+133.3% | Added |
| TD Private Client Wealth LLC | 60 | $1.32K | 0.00% | +60 | New |
| Bare Financial Services, Inc | 64 | $1.41K | 0.00% | +22+52.4% | Added |
| Massmutual Trust Co FSB | 64 | $1.41K | 0.00% | +64 | New |
| Parallel Advisors, LLC | 65 | $1.43K | 0.00% | +42+182.6% | Added |
| True Wealth Design, LLC | 67 | $1.47K | 0.00% | +23+52.3% | Added |
| IFP Advisors, Inc | 69 | $1.52K | 0.00% | +4+6.2% | Added |
| Federation des caisses Desjardins du Quebec | 75 | $1.65K | 0.00% | 00.0% | Unchanged |
| Golden State Wealth Management, LLC | 80 | $1.76K | 0.00% | +39+95.1% | Added |
| Elequin Capital LP | 90 | $1.98K | 0.00% | +90 | New |
| Bessemer Group Inc | 90 | $2.00K | 0.00% | +5+5.9% | Added |
| Fortitude Family Office, LLC | 97 | $2.13K | 0.00% | +97 | New |
| Toth Financial Advisory Corp | 100 | $2.20K | 0.00% | 00.0% | Unchanged |
| GWM Advisors LLC | 100 | $2.20K | 0.00% | 00.0% | Unchanged |
| Front Row Advisors LLC | 100 | $2.20K | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 120 | $2.64K | 0.00% | −200−62.5% | Reduced |
| Rothschild Investment LLC | 123 | $2.70K | 0.00% | +98+392.0% | Added |
| Colonial Trust Co | 128 | $2.88K | 0.00% | +128 | New |
| MAI Capital Management | 141 | $3.10K | 0.00% | +27+23.7% | Added |
| Harbour Investments, Inc. | 204 | $4.48K | 0.00% | 00.0% | Unchanged |
| Los Angeles Capital Management LLC | 348 | $5.08K | 0.00% | +348 | New |
| Larson Financial Group LLC | 292 | $6.42K | 0.00% | +192+192.0% | Added |
| Signaturefd, LLC | 347 | $7.63K | 0.00% | +115+49.6% | Added |
| Ancora Advisors, LLC | 360 | $7.91K | 0.00% | +360 | New |
| Versant Capital Management, Inc | 377 | $8.29K | 0.00% | +49+14.9% | Added |
| Umb Bank N A | 377 | $8.29K | 0.00% | +353+1,470.8% | Added |
| Torren Management, LLC | 379 | $8.33K | 0.00% | +379 | New |
| Transamerica Financial Advisors, Inc. | 389 | $8.55K | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 431 | $9.47K | 0.00% | −1,774−80.5% | Reduced |
| Clear Street Markets LLC | 432 | $9.49K | 0.00% | +432 | New |
| Sterling Capital Management LLC | 444 | $9.76K | 0.00% | +282+174.1% | Added |
| Quent Capital, LLC | 457 | $10.0K | 0.00% | −60−11.6% | Reduced |
| SRS Capital Advisors, Inc. | 498 | $10.9K | 0.00% | −6,653−93.0% | Reduced |
| Allworth Financial LP | 542 | $11.9K | 0.00% | +255+88.9% | Added |
| Quadrant Capital Group LLC | 568 | $12.5K | 0.00% | −564−49.8% | Reduced |
| Global Retirement Partners, LLC | 600 | $13.2K | 0.00% | 00.0% | Unchanged |
| Salomon & Ludwin, LLC | 595 | $13.8K | 0.00% | −9−1.5% | Reduced |
| Rockefeller Capital Management L.P. | 627 | $13.8K | 0.00% | +225+56.0% | Added |
| Covestor Ltd | 696 | $15.0K | 0.01% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 686 | $15.1K | 0.00% | +369+116.4% | Added |
| Hantz Financial Services, Inc. | 735 | $16.0K | 0.00% | +697+1,834.2% | Added |
| Wellington-Altus USA Inc. | 808 | $17.8K | 0.01% | +808 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 979 | $22.0K | 0.00% | +271+38.3% | Added |
| Fifth Third Bancorp | 1,039 | $22.8K | 0.00% | +145+16.2% | Added |
| EverSource Wealth Advisors, LLC | 1,051 | $23.1K | 0.00% | +472+81.5% | Added |
| Nisa Investment Advisors, LLC | 1,335 | $29.3K | 0.00% | +440+49.2% | Added |
| Smartleaf Asset Management LLC | 1,330 | $29.9K | 0.00% | +593+80.5% | Added |
| Quarry LP | 1,437 | $31.6K | 0.01% | −2,258−61.1% | Reduced |
| Jones Financial Companies LLLP | 1,562 | $34.3K | 0.00% | +251+19.1% | Added |
| McIlrath & Eck, LLC | 1,605 | $35.3K | 0.00% | 00.0% | Unchanged |
| First Horizon Corp | 1,624 | $35.7K | 0.00% | +430+36.0% | Added |
| AdvisorNet Financial, Inc | 1,680 | $36.9K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 1,750 | $38.5K | 0.00% | 00.0% | Unchanged |
| KBC Group NV | 2,011 | $44.0K | 0.00% | −189,826−99.0% | Reduced |
| US Bancorp | 2,019 | $44.4K | 0.00% | −336−14.3% | Reduced |
| Stonehage Fleming Financial Services Holdings Ltd | 2,551 | $56.1K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 2,616 | $57.5K | 0.00% | −5,871−69.2% | Reduced |
| Essential Partners LLC | 2,887 | $63.5K | 0.02% | +25+0.9% | Added |
| Pinnacle Wealth Planning Services, Inc. | 3,007 | $66.1K | 0.01% | +3,007 | New |
| Van Eck Associates Corp | 3,430 | $75.0K | 0.00% | +1,381+67.4% | Added |
| Creative Financial Designs Inc | 3,431 | $75.4K | 0.00% | +909+36.0% | Added |
| Farther Finance Advisors, LLC | 3,600 | $79.1K | 0.00% | +965+36.6% | Added |
| GAMMA Investing LLC | 4,542 | $99.8K | 0.01% | +3,429+308.1% | Added |
| Ensign Peak Advisors, Inc | 5,032 | $110.6K | 0.00% | −12,150−70.7% | Reduced |
| Ameritas Investment Partners, Inc. | 5,586 | $122.8K | 0.00% | 00.0% | Unchanged |
| CoreCap Advisors, LLC | 5,909 | $129.9K | 0.00% | +1,158+24.4% | Added |
| Public Employees Retirement Association of Colorado | 7,650 | $168.0K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 7,806 | $171.6K | 0.01% | −3,236−29.3% | Reduced |
| China Universal Asset Management Co., Ltd. | 8,000 | $175.8K | 0.01% | 00.0% | Unchanged |
| Walleye Trading LLC | 9,358 | $205.7K | 0.00% | +2,240+31.5% | Added |
| Park Avenue Securities LLC | 9,403 | $207.0K | 0.00% | +9,403 | New |
| Fiduciary Trust Co | 9,447 | $207.6K | 0.00% | +9,447 | New |
| EntryPoint Capital, LLC | 9,477 | $208.3K | 0.08% | +9,477 | New |
| Creative Planning | 9,478 | $208.3K | 0.00% | −812−7.9% | Reduced |
| Colony Group, LLC | 9,546 | $209.8K | 0.00% | +9,546 | New |
| Victory Capital Management Inc | 9,771 | $214.8K | 0.00% | +9,771 | New |
| Maryland State Retirement & Pension System | 9,855 | $216.6K | 0.00% | +9,855 | New |
| EP Wealth Advisors, LLC | 9,977 | $219.3K | 0.00% | +9,977 | New |
| Prosperitas Financial LLC | 10,000 | $219.8K | 0.09% | +10,000 | New |
| Verition Fund Management LLC | 10,587 | $232.7K | 0.00% | −12,479−54.1% | Reduced |