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 |
|---|---|---|---|---|---|
| Point72 Asia (Singapore) Pte. Ltd. | 1,000 | $12.1K | 0.00% | +1,000 | New |
| Nisa Investment Advisors, LLC | 895 | $10.9K | 0.00% | −3,276−78.5% | Reduced |
| Fifth Third Bancorp | 894 | $10.9K | 0.00% | +491+121.8% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 708 | $9.00K | 0.00% | +50+7.6% | Added |
| Salomon & Ludwin, LLC | 604 | $8.88K | 0.00% | +604 | New |
| Smartleaf Asset Management LLC | 737 | $8.69K | 0.00% | −513−41.0% | Reduced |
| Covestor Ltd | 696 | $8.00K | 0.00% | +406+140.0% | Added |
| Clearstead Advisors, LLC | 658 | $7.99K | 0.00% | +591+882.1% | Added |
| Global Retirement Partners, LLC | 600 | $7.28K | 0.00% | −42−6.5% | Reduced |
| EverSource Wealth Advisors, LLC | 579 | $7.03K | 0.00% | +410+242.6% | Added |
| Quent Capital, LLC | 517 | $6.28K | 0.00% | +517 | New |
| Optiver Holding B.V. | 460 | $5.58K | 0.00% | +460 | New |
| Rockefeller Capital Management L.P. | 402 | $4.88K | 0.00% | +402 | New |
| Transamerica Financial Advisors, Inc. | 389 | $4.72K | 0.00% | +389 | New |
| Principal Securities, Inc. | 381 | $4.63K | 0.00% | −55−12.6% | Reduced |
| Wealthspire Advisors, LLC | 330 | $4.01K | 0.00% | +330 | New |
| Versant Capital Management, Inc | 328 | $3.98K | 0.00% | −1,728−84.0% | Reduced |
| Newbridge Financial Services Group, Inc. | 320 | $3.88K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 317 | $3.85K | 0.00% | +287+956.7% | Added |
| Allworth Financial LP | 287 | $3.48K | 0.00% | +261+1,003.8% | Added |
| Banque Cantonale Vaudoise | 237 | $3.00K | 0.00% | 00.0% | Unchanged |
| Signaturefd, LLC | 232 | $2.82K | 0.00% | −539−69.9% | Reduced |
| Harbour Investments, Inc. | 204 | $2.48K | 0.00% | 00.0% | Unchanged |
| Mather Group, LLC. | 175 | $2.13K | 0.00% | +175 | New |
| Sterling Capital Management LLC | 162 | $1.97K | 0.00% | +1+0.6% | Added |
| MAI Capital Management | 114 | $1.38K | 0.00% | −607−84.2% | 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 |
| Bessemer Group Inc | 85 | $1.00K | 0.00% | −24,961−99.7% | Reduced |
| Federation des caisses Desjardins du Quebec | 75 | $911 | 0.00% | 00.0% | Unchanged |
| Prestige Wealth Management Group LLC | 65 | $790 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 65 | $789 | 0.00% | +65 | Added |
| Farmers & Merchants Investments Inc | 50 | $607 | 0.00% | 00.0% | Unchanged |
| Ameritas Advisory Services, LLC | 50 | $607 | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 44 | $535 | 0.00% | −26−37.1% | Reduced |
| Bare Financial Services, Inc | 42 | $510 | 0.00% | +19+82.6% | Added |
| Golden State Wealth Management, LLC | 41 | $498 | 0.00% | 00.0% | Unchanged |
| Eastern Bank | 32 | $388 | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 25 | $304 | 0.00% | −100−80.0% | Reduced |
| SBI Securities Co., Ltd. | 25 | $304 | 0.00% | +7+38.9% | Added |
| Parkside Financial Bank & Trust | 24 | $292 | 0.00% | +9+60.0% | Added |
| Umb Bank N A | 24 | $291 | 0.00% | −305−92.7% | Reduced |
| Parallel Advisors, LLC | 23 | $279 | 0.00% | −566−96.1% | Reduced |
| JFS Wealth Advisors, LLC | 15 | $183 | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 13 | $158 | 0.00% | 00.0% | Unchanged |
| Evermay Wealth Management LLC | 9 | $110 | 0.00% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 6 | $73 | 0.00% | 00.0% | Unchanged |
| Abound Wealth Management | 6 | $73 | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 4 | $49 | 0.00% | −32−88.9% | Reduced |
| Abich Financial Wealth Management LLC | 2 | $24 | 0.00% | +2 | New |
| Huntington National Bank | 1 | $12 | 0.00% | −22−95.7% | Reduced |
| Hantz Financial Services, Inc. | 38 | $0 | 0.00% | −2−5.0% | Reduced |
| Cornerstone Planning Group LLC | 123 | – | – | +123 | New |
| Stephens Investment Management Group LLC | 0 | $0 | 0.00% | −1,737,769−100.0% | Sold out |
| Champlain Investment Partners, LLC | 0 | $0 | 0.00% | −1,455,123−100.0% | Sold out |
| Ophir Asset Management Pty Ltd | 0 | $0 | 0.00% | −1,464,956−100.0% | Sold out |
| Brown Advisory Inc | 0 | $0 | 0.00% | −1,057,115−100.0% | Sold out |
| Capital World Investors | 0 | $0 | 0.00% | −767,000−100.0% | Sold out |
| Fred Alger Management, LLC | 0 | $0 | 0.00% | −667,345−100.0% | Sold out |
| ExodusPoint Capital Management, LP | 0 | $0 | 0.00% | −417,308−100.0% | Sold out |
| Silvercrest Asset Management Group LLC | 0 | $0 | 0.00% | −346,160−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −311,517−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −253,840−100.0% | Sold out |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −250,000−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −230,934−100.0% | Sold out |
| Soleus Capital Management, L.P. | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| FIL Ltd | 0 | $0 | 0.00% | −191,417−100.0% | Sold out |
| 1492 Capital Management LLC | 0 | $0 | 0.00% | −188,754−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −180,660−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −170,488−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −162,030−100.0% | Sold out |
| HighTower Advisors, LLC | 0 | $0 | 0.00% | −121,460−100.0% | Sold out |
| Kennedy Capital Management, Inc. | 0 | $0 | 0.00% | −117,702−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −82,432−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −74,886−100.0% | Sold out |
| Centiva Capital, LP | 0 | $0 | 0.00% | −61,001−100.0% | Sold out |
| Beaconlight Capital, LLC | 0 | $0 | 0.00% | −53,455−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −48,185−100.0% | Sold out |
| Mirae Asset Global Investments Co., Ltd. | 0 | $0 | 0.00% | −36,060−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −31,576−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −31,516−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −31,403−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −30,108−100.0% | Sold out |
| Bayesian Capital Management, LP | 0 | $0 | 0.00% | −28,400−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −26,143−100.0% | Sold out |
| Petrus Trust Company, LTA | 0 | $0 | 0.00% | −22,669−100.0% | Sold out |
| Maryland State Retirement & Pension System | 0 | $0 | 0.00% | −19,575−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −18,278−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −16,483−100.0% | Sold out |
| Corton Capital Inc. | 0 | $0 | 0.00% | −13,038−100.0% | Sold out |
| Arrowstreet Capital, Limited Partnership | 0 | $0 | 0.00% | −12,411−100.0% | Sold out |
| Natixis | 0 | $0 | 0.00% | −12,200−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −12,160−100.0% | Sold out |
| CI Private Wealth, LLC | 0 | $0 | 0.00% | −11,800−100.0% | Sold out |
| Park Avenue Securities LLC | 0 | $0 | 0.00% | −10,938−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −10,138−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −6,160−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −4,733−100.0% | Sold out |