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 2025
Institutional positions in Tandem Diabetes Care Inc as of Jun 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
- 271
- −2 vs. Q1 2025
- Shares held
- 81.0M
- +7.96M (+10.9%) vs. Q1 2025
- Total value
- $1.51B
- +$107.8M (+7.7%) vs. Q1 2025
- New holders
- 40
- 117 more added
- Sold out
- 42
- 71 more reduced
2 institutions that held it in Q1 2025 haven't filed for Q2 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Lazard Asset Management LLC | 2,911 | $54.0K | 0.00% | +260+9.8% | Added |
| CWM, LLC | 2,796 | $52.0K | 0.00% | +2,025+262.6% | Added |
| Farther Finance Advisors, LLC | 2,637 | $49.2K | 0.00% | −1,479−35.9% | Reduced |
| Stonehage Fleming Financial Services Holdings Ltd | 2,551 | $47.5K | 0.00% | 00.0% | Unchanged |
| Creative Financial Designs Inc | 2,522 | $47.0K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 2,056 | $38.3K | 0.01% | +1,284+166.3% | Added |
| Assetmark, Inc | 1,750 | $32.6K | 0.00% | 00.0% | Unchanged |
| AdvisorNet Financial, Inc | 1,719 | $32.0K | 0.00% | 00.0% | Unchanged |
| First Horizon Advisors, Inc. | 1,629 | $30.4K | 0.00% | +558+52.1% | Added |
| GAMMA Investing LLC | 1,621 | $30.2K | 0.00% | −581−26.4% | Reduced |
| McIlrath & Eck, LLC | 1,605 | $29.9K | 0.00% | +390+32.1% | Added |
| Jones Financial Companies LLLP | 1,411 | $26.7K | 0.00% | +558+65.4% | Added |
| CoreCap Advisors, LLC | 1,283 | $23.9K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 1,250 | $23.7K | 0.00% | +242+24.0% | Added |
| Salem Investment Counselors Inc | 1,000 | $18.6K | 0.00% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 880 | $16.4K | 0.00% | +880 | New |
| Signaturefd, LLC | 771 | $14.4K | 0.00% | −927−54.6% | Reduced |
| Caitong International Asset Management Co., Ltd | 735 | $13.7K | 0.01% | +716+3,768.4% | Added |
| MAI Capital Management | 721 | $13.4K | 0.00% | +643+824.4% | Added |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 658 | $12.0K | 0.00% | +658 | New |
| Global Retirement Partners, LLC | 642 | $12.0K | 0.00% | +642 | New |
| Parallel Advisors, LLC | 589 | $11.0K | 0.00% | −430−42.2% | Reduced |
| SRS Capital Advisors, Inc. | 476 | $8.87K | 0.00% | +59+14.1% | Added |
| GWM Advisors LLC | 452 | $8.43K | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 436 | $8.13K | 0.00% | +215+97.3% | Added |
| Fifth Third Bancorp | 403 | $7.51K | 0.00% | −28−6.5% | Reduced |
| Umb Bank N A | 329 | $6.13K | 0.00% | +329 | New |
| Newbridge Financial Services Group, Inc. | 320 | $5.96K | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 290 | $5.00K | 0.00% | −1−0.3% | Reduced |
| IFP Advisors, Inc | 0 | $4.73K | 0.00% | −96−100.0% | Reduced |
| Banque Cantonale Vaudoise | 237 | $4.00K | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 204 | $3.80K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 169 | $3.15K | 0.00% | +130+333.3% | Added |
| Sterling Capital Management LLC | 161 | $3.00K | 0.00% | +94+140.3% | Added |
| Quarry LP | 137 | $2.55K | 0.00% | +137 | New |
| Steward Partners Investment Advisory, LLC | 130 | $2.42K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 125 | $2.33K | 0.00% | +95+316.7% | Added |
| Massmutual Trust Co FSB | 113 | $2.11K | 0.00% | −158−58.3% | Reduced |
| Toth Financial Advisory Corp | 100 | $1.86K | 0.00% | 00.0% | Unchanged |
| Front Row Advisors LLC | 100 | $1.86K | 0.00% | 00.0% | Unchanged |
| Private Trust Co NA | 93 | $1.72K | 0.00% | −92−49.7% | Reduced |
| Fortitude Family Office, LLC | 82 | $1.53K | 0.00% | +82 | New |
| Federation des caisses Desjardins du Quebec | 75 | $1.40K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 70 | $1.30K | 0.00% | +69+6,900.0% | Added |
| Clearstead Advisors, LLC | 67 | $1.25K | 0.00% | +67 | New |
| Prestige Wealth Management Group LLC | 65 | $1.21K | 0.00% | +2+3.2% | Added |
| Elequin Capital LP | 54 | $1.01K | 0.00% | +54 | New |
| Hantz Financial Services, Inc. | 40 | $1.00K | 0.00% | +5+14.3% | Added |
| Farmers & Merchants Investments Inc | 50 | $932 | 0.00% | 00.0% | Unchanged |
| Ameritas Advisory Services, LLC | 50 | $932 | 0.00% | +50 | New |
| Golden State Wealth Management, LLC | 41 | $764 | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 36 | $672 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 36 | $671 | 0.00% | +36 | New |
| Sachetta, LLC | 35 | $653 | 0.00% | 00.0% | Unchanged |
| Eastern Bank | 32 | $596 | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 31 | $578 | 0.00% | +24+342.9% | Added |
| Northwestern Mutual Wealth Management Co | 30 | $559 | 0.00% | −5−14.3% | Reduced |
| Allworth Financial LP | 26 | $485 | 0.00% | −12−31.6% | Reduced |
| Huntington National Bank | 23 | $429 | 0.00% | −10−30.3% | Reduced |
| Bare Financial Services, Inc | 23 | $429 | 0.00% | −6−20.7% | Reduced |
| Central Trust Co | 20 | $373 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 18 | $336 | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 15 | $280 | 0.00% | −192−92.8% | Reduced |
| JFS Wealth Advisors, LLC | 15 | $280 | 0.00% | 00.0% | Unchanged |
| Atlantic Trust, LLC | 13 | $243 | 0.00% | +13 | New |
| MV Capital Management, Inc. | 12 | $224 | 0.00% | −11−47.8% | Reduced |
| Evermay Wealth Management LLC | 9 | $168 | 0.00% | 00.0% | Unchanged |
| CIBC Private Wealth Group, LLC | 6 | $112 | 0.00% | −640−99.1% | Reduced |
| Abound Wealth Management | 6 | $112 | 0.00% | 00.0% | Unchanged |
| WealthTrak Capital Management LLC | 5 | $94 | 0.00% | 00.0% | Unchanged |
| Bryn Mawr Trust Co | 5 | $93 | 0.00% | 00.0% | Unchanged |
| Park West Asset Management LLC | 0 | $0 | 0.00% | −1,123,052−100.0% | Sold out |
| Kingdon Capital Management, L.L.C. | 0 | $0 | 0.00% | −495,229−100.0% | Sold out |
| First Light Asset Management, LLC | 0 | $0 | 0.00% | −245,257−100.0% | Sold out |
| iA Global Asset Management Inc. | 0 | $0 | 0.00% | −165,380−100.0% | Sold out |
| Polar Capital Holdings Plc | 0 | $0 | 0.00% | −140,536−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −130,595−100.0% | Sold out |
| Jupiter Asset Management Ltd | 0 | $0 | 0.00% | −87,815−100.0% | Sold out |
| Mangrove Partners | 0 | $0 | 0.00% | −82,428−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −70,399−100.0% | Sold out |
| Hussman Strategic Advisors, Inc. | 0 | $0 | 0.00% | −63,000−100.0% | Sold out |
| Semanteon Capital Management, LP | 0 | $0 | 0.00% | −55,413−100.0% | Sold out |
| JB Capital LLC | 0 | $0 | 0.00% | −51,778−100.0% | Sold out |
| First Trust Advisors LP | 0 | $0 | 0.00% | −39,876−100.0% | Sold out |
| Janney Montgomery Scott LLC | 0 | $0 | 0.00% | −38,450−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −38,159−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −35,942−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −34,290−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −30,500−100.0% | Sold out |
| Wiley Bros.-Aintree Capital, LLC | 0 | $0 | 0.00% | −23,142−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −23,372−100.0% | Sold out |
| Chicago Capital, LLC | 0 | $0 | 0.00% | −20,726−100.0% | Sold out |
| Counterpoint Mutual Funds LLC | 0 | $0 | 0.00% | −18,963−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −14,571−100.0% | Sold out |
| Atria Investments LLC | 0 | $0 | 0.00% | −11,569−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −10,973−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −10,700−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −10,718−100.0% | Sold out |
| MN Wealth Advisors, LLC | 0 | $0 | 0.00% | −10,623−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −10,098−100.0% | Sold out |