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 2021
Institutional positions in Tandem Diabetes Care Inc as of Sep 30, 2021. 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
- 338
- +41 vs. Q2 2021
- Shares held
- 61.3M
- +2.48M (+4.2%) vs. Q2 2021
- Total value
- $7.32B
- +$1.59B (+27.8%) vs. Q2 2021
- New holders
- 80
- 106 more added
- Sold out
- 39
- 106 more reduced
6 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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 2021
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Baillie Gifford & Co | 347,052 | $41.4M | 0.02% | +1270.0% | Added |
| Point72 Asset Management, L.P. | 356,667 | $42.6M | 0.20% | −321,660−47.4% | Reduced |
| Wasatch Advisors Inc | 392,301 | $46.8M | 0.19% | +26,518+7.2% | Added |
| Amundi | 403,562 | $48.2M | 0.03% | −73,952−15.5% | Reduced |
| TimesSquare Capital Management, LLC | 430,345 | $51.4M | 0.45% | −167,855−28.1% | Reduced |
| Eaton Vance Management | 439,030 | $52.4M | 0.07% | −88,553−16.8% | Reduced |
| Voya Investment Management LLC | 449,789 | $53.7M | 0.11% | −12,870−2.8% | Reduced |
| Chicago Capital, LLC | 453,273 | $54.1M | 2.05% | −4,188−0.9% | Reduced |
| Wellington Management Group LLP | 458,639 | $54.8M | 0.01% | −102,438−18.3% | Reduced |
| Charles Schwab Investment Management Inc | 477,463 | $57.0M | 0.02% | +13,373+2.9% | Added |
| First Light Asset Management, LLC | 479,186 | $57.2M | 3.77% | −49,420−9.3% | Reduced |
| Consonance Capital Management LP | 487,327 | $58.2M | 31.84% | −491,899−50.2% | Reduced |
| Northern Trust Corp | 489,555 | $58.4M | 0.01% | +196,716+67.2% | Added |
| Jennison Associates LLC | 560,883 | $67.0M | 0.04% | +27,914+5.2% | Added |
| Bank of New York Mellon Corp | 580,695 | $69.3M | 0.01% | +337,838+139.1% | Added |
| Norges Bank | 586,150 | $70.0M | 0.02% | 00.0% | Unchanged |
| Price T Rowe Associates Inc | 650,305 | $77.6M | 0.01% | −131,038−16.8% | Reduced |
| SEI Investments Co | 712,465 | $85.1M | 0.18% | −4,976−0.7% | Reduced |
| Gilder Gagnon Howe & Co LLC | 781,006 | $93.2M | 0.48% | −9,561−1.2% | Reduced |
| Geode Capital Management, LLC | 801,055 | $95.6M | 0.01% | +11,050+1.4% | Added |
| Stephens Investment Management Group LLC | 820,346 | $97.9M | 1.33% | +41,424+5.3% | Added |
| Janus Henderson Group PLC | 846,918 | $101.1M | 0.04% | +15,756+1.9% | Added |
| Macquarie Group Ltd | 950,380 | $113.5M | 0.10% | +6,847+0.7% | Added |
| Goldman Sachs Group Inc | 982,746 | $117.3M | 0.03% | +367,990+59.9% | Added |
| Delphi Management Partners VIII, L.L.C. | 1,000,000 | $119.4M | 86.22% | 00.0% | Unchanged |
| Bellevue Group AG | 1,034,519 | $123.5M | 1.25% | +14,151+1.4% | Added |
| Credit Suisse AG | 1,037,546 | $123.9M | 0.10% | −644,831−38.3% | Reduced |
| Federated Hermes, Inc. | 1,158,738 | $138.3M | 0.26% | −115,090−9.0% | Reduced |
| RTW Investments, LP | 1,160,734 | $138.6M | 2.09% | +13,326+1.2% | Added |
| Brown Capital Management LLC | 1,223,766 | $146.1M | 1.20% | −2,350−0.2% | Reduced |
| Champlain Investment Partners, LLC | 1,493,838 | $178.3M | 0.85% | −52,732−3.4% | Reduced |
| State Street Corp | 1,612,427 | $192.5M | 0.01% | +422,287+35.5% | Added |
| Invesco Ltd. | 1,737,518 | $207.4M | 0.05% | +134,364+8.4% | Added |
| Capital World Investors | 3,293,996 | $393.2M | 0.07% | +17,292+0.5% | Added |
| Jackson Square Partners, LLC | 3,571,638 | $426.4M | 2.70% | −51,456−1.4% | Reduced |
| BlackRock Inc. | 5,806,634 | $693.2M | 0.02% | +2,283,672+64.8% | Added |
| FMR LLC | 5,846,900 | $698.0M | 0.06% | −147,745−2.5% | Reduced |
| Vanguard Group Inc | 6,051,059 | $722.4M | 0.02% | +446,554+8.0% | Added |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −166,041−100.0% | Sold out |
| Royce & Associates LP | 0 | $0 | 0.00% | −78,286−100.0% | Sold out |
| Landscape Capital Management, L.L.C. | 0 | $0 | 0.00% | −38,336−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −37,825−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −19,845−100.0% | Sold out |
| Sante Capital Fund, LP | 0 | $0 | 0.00% | −17,083−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −16,189−100.0% | Sold out |
| Tudor Investment Corp Et Al | 0 | $0 | 0.00% | −13,148−100.0% | Sold out |
| Edmond de Rothschild Holding S.A. | 0 | $0 | 0.00% | −8,926−100.0% | Sold out |
| Bridgefront Capital, LLC | 0 | $0 | 0.00% | −6,907−100.0% | Sold out |
| APG Asset Management N.V. | 0 | $0 | 0.00% | −7,700−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −5,922−100.0% | Sold out |
| Occudo Quantitative Strategies LP | 0 | $0 | 0.00% | −5,619−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −5,423−100.0% | Sold out |
| Pearl River Capital, LLC | 0 | $0 | 0.00% | −4,993−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −4,412−100.0% | Sold out |
| Echo Street Capital Management LLC | 0 | $0 | 0.00% | −4,217−100.0% | Sold out |
| Fox Run Management, L.L.C. | 0 | $0 | 0.00% | −3,901−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −3,870−100.0% | Sold out |
| NN Investment Partners Holdings N.V. | 0 | $0 | 0.00% | −3,700−100.0% | Sold out |
| Campbell & CO Investment Adviser LLC | 0 | $0 | 0.00% | −3,100−100.0% | Sold out |
| Weld Capital Management LLC | 0 | $0 | 0.00% | −2,999−100.0% | Sold out |
| Cornerstone Investment Partners, LLC | 0 | $0 | 0.00% | −2,645−100.0% | Sold out |
| Laurel Wealth Advisors, Inc. | 0 | $0 | 0.00% | −2,632−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −2,566−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −2,092−100.0% | Sold out |
| Point72 Hong Kong Ltd | 0 | $0 | 0.00% | −1,320−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −1,281−100.0% | Sold out |
| Leonteq Securities AG | 0 | $0 | 0.00% | −800−100.0% | Sold out |
| Compagnie Lombard Odier SCmA | 0 | $0 | 0.00% | −670−100.0% | Sold out |
| Cutler Group LP | 0 | $0 | 0.00% | −325−100.0% | Sold out |
| Wolverine Asset Management LLC | 0 | $0 | 0.00% | −77−100.0% | Sold out |
| AlphaMark Advisors, LLC | 0 | $0 | 0.00% | −40−100.0% | Sold out |
| Advisory Services Network, LLC | 0 | $0 | 0.00% | −42−100.0% | Sold out |
| Eubel Brady & Suttman Asset Management Inc | 0 | $0 | 0.00% | −10−100.0% | Sold out |
| CVA Family Office, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| Bartlett & Co. Wealth Management LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Bartlett & Co. LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Pictet Asset Management Ltd | – | – | – | – | Not filed |
| Kensington Investment Counsel, LLC | – | – | – | – | Not filed |
| Coe Capital Management, LLC | – | – | – | – | Not filed |
| Hoover Financial Advisors, Inc. | – | – | – | – | Not filed |
| CWM, LLC | – | – | – | – | Not filed |
| Castleview Partners, LLC | – | – | – | – | Not filed |