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, Q3 2025
Institutional positions in Tandem Diabetes Care Inc as of Sep 30, 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
- 255
- −15 vs. Q2 2025
- Shares held
- 75.1M
- −5.90M (−7.3%) vs. Q2 2025
- Total value
- $911.3M
- −$595.7M (−39.5%) vs. Q2 2025
- New holders
- 42
- 76 more added
- Sold out
- 57
- 97 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Hantz Financial Services, Inc. | 38 | $0 | 0.00% | −2−5.0% | Reduced |
| Huntington National Bank | 1 | $12 | 0.00% | −22−95.7% | Reduced |
| Abich Financial Wealth Management LLC | 2 | $24 | 0.00% | +2 | New |
| Bell Investment Advisors, Inc | 4 | $49 | 0.00% | −32−88.9% | Reduced |
| CIBC Private Wealth Group, LLC | 6 | $73 | 0.00% | 00.0% | Unchanged |
| Abound Wealth Management | 6 | $73 | 0.00% | 00.0% | Unchanged |
| Evermay Wealth Management LLC | 9 | $110 | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 13 | $158 | 0.00% | 00.0% | Unchanged |
| JFS Wealth Advisors, LLC | 15 | $183 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 23 | $279 | 0.00% | −566−96.1% | Reduced |
| Umb Bank N A | 24 | $291 | 0.00% | −305−92.7% | Reduced |
| Parkside Financial Bank & Trust | 24 | $292 | 0.00% | +9+60.0% | Added |
| Rothschild Investment LLC | 25 | $304 | 0.00% | −100−80.0% | Reduced |
| SBI Securities Co., Ltd. | 25 | $304 | 0.00% | +7+38.9% | Added |
| Eastern Bank | 32 | $388 | 0.00% | 00.0% | Unchanged |
| Golden State Wealth Management, LLC | 41 | $498 | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 42 | $510 | 0.00% | +19+82.6% | Added |
| True Wealth Design, LLC | 44 | $535 | 0.00% | −26−37.1% | Reduced |
| Farmers & Merchants Investments Inc | 50 | $607 | 0.00% | 00.0% | Unchanged |
| Ameritas Advisory Services, LLC | 50 | $607 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 65 | $789 | 0.00% | +65 | Added |
| Prestige Wealth Management Group LLC | 65 | $790 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 75 | $911 | 0.00% | 00.0% | Unchanged |
| Bessemer Group Inc | 85 | $1.00K | 0.00% | −24,961−99.7% | Reduced |
| GWM Advisors LLC | 100 | $1.21K | 0.00% | −352−77.9% | Reduced |
| Toth Financial Advisory Corp | 100 | $1.21K | 0.00% | 00.0% | Unchanged |
| Front Row Advisors LLC | 100 | $1.21K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 100 | $1.21K | 0.00% | +69+222.6% | Added |
| MAI Capital Management | 114 | $1.38K | 0.00% | −607−84.2% | Reduced |
| Sterling Capital Management LLC | 162 | $1.97K | 0.00% | +1+0.6% | Added |
| Mather Group, LLC. | 175 | $2.13K | 0.00% | +175 | New |
| Harbour Investments, Inc. | 204 | $2.48K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 232 | $2.82K | 0.00% | −539−69.9% | Reduced |
| Banque Cantonale Vaudoise | 237 | $3.00K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 287 | $3.48K | 0.00% | +261+1,003.8% | Added |
| Northwestern Mutual Wealth Management Co | 317 | $3.85K | 0.00% | +287+956.7% | Added |
| Newbridge Financial Services Group, Inc. | 320 | $3.88K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 328 | $3.98K | 0.00% | −1,728−84.0% | Reduced |
| Wealthspire Advisors, LLC | 330 | $4.01K | 0.00% | +330 | New |
| Principal Securities, Inc. | 381 | $4.63K | 0.00% | −55−12.6% | Reduced |
| Transamerica Financial Advisors, Inc. | 389 | $4.72K | 0.00% | +389 | New |
| Rockefeller Capital Management L.P. | 402 | $4.88K | 0.00% | +402 | New |
| Optiver Holding B.V. | 460 | $5.58K | 0.00% | +460 | New |
| Quent Capital, LLC | 517 | $6.28K | 0.00% | +517 | New |
| EverSource Wealth Advisors, LLC | 579 | $7.03K | 0.00% | +410+242.6% | Added |
| Global Retirement Partners, LLC | 600 | $7.28K | 0.00% | −42−6.5% | Reduced |
| Clearstead Advisors, LLC | 658 | $7.99K | 0.00% | +591+882.1% | Added |
| Covestor Ltd | 696 | $8.00K | 0.00% | +406+140.0% | Added |
| Smartleaf Asset Management LLC | 737 | $8.69K | 0.00% | −513−41.0% | Reduced |
| Salomon & Ludwin, LLC | 604 | $8.88K | 0.00% | +604 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 708 | $9.00K | 0.00% | +50+7.6% | Added |
| Fifth Third Bancorp | 894 | $10.9K | 0.00% | +491+121.8% | Added |
| Nisa Investment Advisors, LLC | 895 | $10.9K | 0.00% | −3,276−78.5% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 1,000 | $12.1K | 0.00% | +1,000 | New |
| Salem Investment Counselors Inc | 1,000 | $12.1K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 1,113 | $13.5K | 0.00% | −508−31.3% | Reduced |
| Quadrant Capital Group LLC | 1,132 | $13.7K | 0.00% | +1,132 | New |
| First Horizon Corp | 1,194 | $14.5K | 0.00% | +1,194 | New |
| Jones Financial Companies LLLP | 1,311 | $15.7K | 0.00% | −100−7.1% | Reduced |
| Point72 Europe (London) LLP | 1,573 | $19.1K | 0.00% | +1,573 | New |
| McIlrath & Eck, LLC | 1,605 | $19.5K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 1,680 | $20.4K | 0.00% | −39−2.3% | Reduced |
| Assetmark, Inc | 1,750 | $21.2K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 2,010 | $24.4K | 0.00% | −7,158−78.1% | Reduced |
| Van Eck Associates Corp | 2,049 | $25.0K | 0.00% | −4,492−68.7% | Reduced |
| Caitong International Asset Management Co., Ltd | 2,205 | $26.8K | 0.02% | +1,470+200.0% | Added |
| US Bancorp | 2,355 | $28.6K | 0.00% | −33,005−93.3% | Reduced |
| Creative Financial Designs Inc | 2,522 | $30.6K | 0.00% | 00.0% | Unchanged |
| Stonehage Fleming Financial Services Holdings Ltd | 2,551 | $31.0K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 2,635 | $32.0K | 0.00% | −2−0.1% | Reduced |
| Essential Partners LLC | 2,862 | $34.7K | 0.01% | +2,862 | New |
| Simplex Trading, LLC | 3,558 | $43.0K | 0.00% | −6,876−65.9% | Reduced |
| Quarry LP | 3,695 | $44.9K | 0.01% | +3,558+2,597.1% | Added |
| Shell Asset Management Co | 3,878 | $47.0K | 0.00% | −18,974−83.0% | Reduced |
| CoreCap Advisors, LLC | 4,751 | $57.7K | 0.00% | +3,468+270.3% | Added |
| Aster Capital Management (DIFC) Ltd | 5,149 | $62.5K | 0.03% | +4,269+485.1% | Added |
| Ameritas Investment Partners, Inc. | 5,586 | $67.8K | 0.00% | −1,284−18.7% | Reduced |
| Walleye Trading LLC | 7,118 | $86.4K | 0.00% | +975+15.9% | Added |
| SRS Capital Advisors, Inc. | 7,151 | $86.8K | 0.00% | +6,675+1,402.3% | Added |
| Public Employees Retirement Association of Colorado | 7,650 | $93.0K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 8,000 | $97.1K | 0.01% | +8,000 | New |
| Advisory Services Network, LLC | 8,274 | $100.4K | 0.00% | −3,187−27.8% | Reduced |
| Advisor Group Holdings, Inc. | 8,487 | $105.8K | 0.00% | −792−8.5% | Reduced |
| Creative Planning | 10,290 | $124.9K | 0.00% | +10,290 | New |
| 180 Wealth Advisors, LLC | 10,396 | $126.2K | 0.02% | +10,396 | New |
| Guggenheim Capital LLC | 10,692 | $129.8K | 0.00% | +10,692 | New |
| Leonteq Securities AG | 11,042 | $134.1K | 0.01% | +5,151+87.4% | Added |
| Apollon Wealth Management, LLC | 11,257 | $136.7K | 0.00% | −109−1.0% | Reduced |
| Davy Global Fund Management Ltd | 11,851 | $143.9K | 0.01% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 12,195 | $148.0K | 0.00% | +12,195 | New |
| Captrust Financial Advisors | 12,251 | $148.7K | 0.00% | −12,515−50.5% | Reduced |
| Everence Capital Management Inc | 12,376 | $150.0K | 0.01% | +12,376 | New |
| ProShare Advisors LLC | 12,606 | $153.0K | 0.00% | −2,313−15.5% | Reduced |
| KLP Kapitalforvaltning AS | 13,500 | $163.9K | 0.00% | 00.0% | Unchanged |
| Atom Investors LP | 13,521 | $164.1K | 0.01% | +13,521 | New |
| Amundi | 11,022 | $165.4K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 13,929 | $169.1K | 0.00% | −794−5.4% | Reduced |
| State of Wyoming | 15,043 | $182.6K | 0.02% | −6,393−29.8% | Reduced |
| Neuberger Berman Group LLC | 15,101 | $183.3K | 0.00% | −2,132−12.4% | Reduced |
| Oregon Public Employees Retirement Fund | 15,271 | $185.4K | 0.00% | 00.0% | Unchanged |