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 |
|---|---|---|---|---|---|
| Bryn Mawr Trust Co | 5 | $93 | 0.00% | 00.0% | Unchanged |
| WealthTrak Capital Management LLC | 5 | $94 | 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 |
| Evermay Wealth Management LLC | 9 | $168 | 0.00% | 00.0% | Unchanged |
| MV Capital Management, Inc. | 12 | $224 | 0.00% | −11−47.8% | Reduced |
| Atlantic Trust, LLC | 13 | $243 | 0.00% | +13 | New |
| Parkside Financial Bank & Trust | 15 | $280 | 0.00% | −192−92.8% | Reduced |
| JFS Wealth Advisors, LLC | 15 | $280 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 18 | $336 | 0.00% | 00.0% | Unchanged |
| Central Trust Co | 20 | $373 | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 23 | $429 | 0.00% | −10−30.3% | Reduced |
| Bare Financial Services, Inc | 23 | $429 | 0.00% | −6−20.7% | Reduced |
| Allworth Financial LP | 26 | $485 | 0.00% | −12−31.6% | Reduced |
| Northwestern Mutual Wealth Management Co | 30 | $559 | 0.00% | −5−14.3% | Reduced |
| Larson Financial Group LLC | 31 | $578 | 0.00% | +24+342.9% | Added |
| Eastern Bank | 32 | $596 | 0.00% | 00.0% | Unchanged |
| Sachetta, LLC | 35 | $653 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 36 | $671 | 0.00% | +36 | New |
| Bell Investment Advisors, Inc | 36 | $672 | 0.00% | 00.0% | Unchanged |
| Golden State Wealth Management, LLC | 41 | $764 | 0.00% | 00.0% | Unchanged |
| Farmers & Merchants Investments Inc | 50 | $932 | 0.00% | 00.0% | Unchanged |
| Ameritas Advisory Services, LLC | 50 | $932 | 0.00% | +50 | New |
| Hantz Financial Services, Inc. | 40 | $1.00K | 0.00% | +5+14.3% | Added |
| Elequin Capital LP | 54 | $1.01K | 0.00% | +54 | New |
| Prestige Wealth Management Group LLC | 65 | $1.21K | 0.00% | +2+3.2% | Added |
| Clearstead Advisors, LLC | 67 | $1.25K | 0.00% | +67 | New |
| True Wealth Design, LLC | 70 | $1.30K | 0.00% | +69+6,900.0% | Added |
| Federation des caisses Desjardins du Quebec | 75 | $1.40K | 0.00% | 00.0% | Unchanged |
| Fortitude Family Office, LLC | 82 | $1.53K | 0.00% | +82 | New |
| Private Trust Co NA | 93 | $1.72K | 0.00% | −92−49.7% | 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 |
| Massmutual Trust Co FSB | 113 | $2.11K | 0.00% | −158−58.3% | Reduced |
| Rothschild Investment LLC | 125 | $2.33K | 0.00% | +95+316.7% | Added |
| Steward Partners Investment Advisory, LLC | 130 | $2.42K | 0.00% | 00.0% | Unchanged |
| Quarry LP | 137 | $2.55K | 0.00% | +137 | New |
| Sterling Capital Management LLC | 161 | $3.00K | 0.00% | +94+140.3% | Added |
| EverSource Wealth Advisors, LLC | 169 | $3.15K | 0.00% | +130+333.3% | Added |
| Harbour Investments, Inc. | 204 | $3.80K | 0.00% | 00.0% | Unchanged |
| Banque Cantonale Vaudoise | 237 | $4.00K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 0 | $4.73K | 0.00% | −96−100.0% | Reduced |
| Covestor Ltd | 290 | $5.00K | 0.00% | −1−0.3% | Reduced |
| Newbridge Financial Services Group, Inc. | 320 | $5.96K | 0.00% | 00.0% | Unchanged |
| Umb Bank N A | 329 | $6.13K | 0.00% | +329 | New |
| Fifth Third Bancorp | 403 | $7.51K | 0.00% | −28−6.5% | Reduced |
| Principal Securities, Inc. | 436 | $8.13K | 0.00% | +215+97.3% | Added |
| GWM Advisors LLC | 452 | $8.43K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 476 | $8.87K | 0.00% | +59+14.1% | Added |
| Parallel Advisors, LLC | 589 | $11.0K | 0.00% | −430−42.2% | Reduced |
| Global Retirement Partners, LLC | 642 | $12.0K | 0.00% | +642 | New |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 658 | $12.0K | 0.00% | +658 | New |
| MAI Capital Management | 721 | $13.4K | 0.00% | +643+824.4% | Added |
| Caitong International Asset Management Co., Ltd | 735 | $13.7K | 0.01% | +716+3,768.4% | Added |
| Signaturefd, LLC | 771 | $14.4K | 0.00% | −927−54.6% | Reduced |
| Aster Capital Management (DIFC) Ltd | 880 | $16.4K | 0.00% | +880 | New |
| Salem Investment Counselors Inc | 1,000 | $18.6K | 0.00% | 00.0% | Unchanged |
| Smartleaf Asset Management LLC | 1,250 | $23.7K | 0.00% | +242+24.0% | Added |
| CoreCap Advisors, LLC | 1,283 | $23.9K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 1,411 | $26.7K | 0.00% | +558+65.4% | Added |
| McIlrath & Eck, LLC | 1,605 | $29.9K | 0.00% | +390+32.1% | Added |
| GAMMA Investing LLC | 1,621 | $30.2K | 0.00% | −581−26.4% | Reduced |
| First Horizon Advisors, Inc. | 1,629 | $30.4K | 0.00% | +558+52.1% | Added |
| AdvisorNet Financial, Inc | 1,719 | $32.0K | 0.00% | 00.0% | Unchanged |
| Assetmark, Inc | 1,750 | $32.6K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 2,056 | $38.3K | 0.01% | +1,284+166.3% | Added |
| Creative Financial Designs Inc | 2,522 | $47.0K | 0.00% | 00.0% | Unchanged |
| Stonehage Fleming Financial Services Holdings Ltd | 2,551 | $47.5K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 2,637 | $49.2K | 0.00% | −1,479−35.9% | Reduced |
| CWM, LLC | 2,796 | $52.0K | 0.00% | +2,025+262.6% | Added |
| Lazard Asset Management LLC | 2,911 | $54.0K | 0.00% | +260+9.8% | Added |
| Nisa Investment Advisors, LLC | 4,171 | $77.7K | 0.00% | +2,717+186.9% | Added |
| Skopos Labs, Inc. | 4,733 | $88.2K | 0.01% | +1,336+39.3% | Added |
| Leonteq Securities AG | 5,891 | $109.8K | 0.01% | −957−14.0% | Reduced |
| Walleye Trading LLC | 6,143 | $114.5K | 0.00% | +6,143 | New |
| Clear Street Markets LLC | 6,160 | $114.8K | 0.04% | +6,160 | New |
| Van Eck Associates Corp | 6,541 | $122.0K | 0.00% | −857−11.6% | Reduced |
| Ameritas Investment Partners, Inc. | 6,870 | $128.1K | 0.00% | 00.0% | Unchanged |
| Public Employees Retirement Association of Colorado | 7,650 | $143.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 9,168 | $170.9K | 0.00% | +6,290+218.6% | Added |
| Bayforest Capital Ltd | 9,271 | $172.8K | 0.08% | −17,017−64.7% | Reduced |
| Advisor Group Holdings, Inc. | 9,279 | $172.9K | 0.00% | +145+1.6% | Added |
| Advisory Services Network, LLC | 11,461 | $178.6K | 0.00% | +11,461 | New |
| Amundi | 11,022 | $188.3K | 0.00% | −14,162−56.2% | Reduced |
| Virtu Financial LLC | 10,138 | $189.0K | 0.01% | +10,138 | New |
| Simplex Trading, LLC | 10,434 | $194.0K | 0.01% | +8,931+594.2% | Added |
| Park Avenue Securities LLC | 10,938 | $204.0K | 0.00% | −770−6.6% | Reduced |
| Apollon Wealth Management, LLC | 11,366 | $211.9K | 0.00% | +292+2.6% | Added |
| CI Private Wealth, LLC | 11,800 | $220.0K | 0.00% | +531+4.7% | Added |
| Davy Global Fund Management Ltd | 11,851 | $220.9K | 0.02% | 00.0% | Unchanged |
| Victory Capital Management Inc | 12,160 | $226.7K | 0.00% | −85−0.7% | Reduced |
| Natixis | 12,200 | $227.4K | 0.00% | +12,200 | New |
| Arrowstreet Capital, Limited Partnership | 12,411 | $231.3K | 0.00% | +12,411 | New |
| Corton Capital Inc. | 13,038 | $243.0K | 0.28% | +13,038 | New |
| KLP Kapitalforvaltning AS | 13,500 | $251.6K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 14,723 | $274.4K | 0.00% | −3,977−21.3% | Reduced |
| ProShare Advisors LLC | 14,919 | $278.1K | 0.00% | −545−3.5% | Reduced |
| Oregon Public Employees Retirement Fund | 15,271 | $284.7K | 0.01% | +300+2.0% | Added |
| Police & Firemen's Retirement System of New Jersey | 15,299 | $285.2K | 0.00% | +1,399+10.1% | Added |
| Diversified Trust Co | 16,348 | $304.7K | 0.01% | +1,725+11.8% | Added |