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, Q1 2025
Institutional positions in Tandem Diabetes Care Inc as of Mar 31, 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
- 275
- −38 vs. Q4 2024
- Shares held
- 73.1M
- +1.50M (+2.1%) vs. Q4 2024
- Total value
- $1.40B
- −$1.18B (−45.7%) vs. Q4 2024
- New holders
- 40
- 107 more added
- Sold out
- 78
- 85 more reduced
3 institutions that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: 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, Q1 2025
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Truist Financial Corp | 138,547 | $2.65M | 0.00% | +18,986+15.9% | Added |
| Russell Investments Group, Ltd. | 139,094 | $2.67M | 0.00% | −151,134−52.1% | Reduced |
| Polar Capital Holdings Plc | 140,536 | $2.69M | 0.02% | −2,364−1.7% | Reduced |
| State of Wisconsin Investment Board | 156,212 | $2.99M | 0.01% | +13,750+9.7% | Added |
| iA Global Asset Management Inc. | 165,380 | $3.17M | 0.05% | +165,380 | New |
| Divisadero Street Capital Management, LP | 174,692 | $3.35M | 0.38% | −185,540−51.5% | Reduced |
| Legal & General Group Plc | 176,987 | $3.39M | 0.00% | −5,668−3.1% | Reduced |
| Rhumbline Advisers | 178,274 | $3.42M | 0.00% | −432−0.2% | Reduced |
| Sector Gamma AS | 180,523 | $3.46M | 1.11% | +180,523 | New |
| Alliancebernstein L.P. | 180,708 | $3.46M | 0.00% | +86,901+92.6% | Added |
| Susquehanna International Group, LLP | 182,251 | $3.49M | 0.01% | +152,181+506.1% | Added |
| Raymond James Financial Inc | 186,628 | $3.58M | 0.00% | +23,014+14.1% | Added |
| Kennedy Capital Management, Inc. | 187,143 | $3.59M | 0.09% | −80,212−30.0% | Reduced |
| Engineers Gate Manager LP | 190,905 | $3.66M | 0.06% | −31,900−14.3% | Reduced |
| FIL Ltd | 192,494 | $3.69M | 0.00% | −8,882−4.4% | Reduced |
| KBC Group NV | 193,808 | $3.71M | 0.01% | +1,329+0.7% | Added |
| UBS Asset Management Americas Inc | 193,993 | $3.72M | 0.00% | +16,254+9.1% | Added |
| New York State Common Retirement Fund | 197,775 | $3.79M | 0.01% | −14,391−6.8% | Reduced |
| Prudential Financial Inc | 172,064 | $3.82M | 0.01% | −2,820−1.6% | Reduced |
| Public Sector Pension Investment Board | 208,231 | $3.99M | 0.02% | +44,209+27.0% | Added |
| Algert Global LLC | 209,320 | $4.01M | 0.10% | +119,784+133.8% | Added |
| Royal Bank of Canada | 211,666 | $4.05M | 0.00% | +49,408+30.5% | Added |
| Beaconlight Capital, LLC | 219,757 | $4.21M | 2.88% | −111,452−33.7% | Reduced |
| Millennium Management LLC | 227,585 | $4.36M | 0.00% | +76,245+50.4% | Added |
| Acadian Asset Management LLC | 232,872 | $4.46M | 0.01% | +232,872 | New |
| JPMorgan Chase & Co | 233,765 | $4.48M | 0.00% | −158,821−40.5% | Reduced |
| Invesco Ltd. | 237,122 | $4.54M | 0.00% | +32,232+15.7% | Added |
| Quantinno Capital Management LP | 241,831 | $4.63M | 0.03% | +190,219+368.6% | Added |
| First Light Asset Management, LLC | 245,257 | $4.70M | 0.54% | −46,860−16.0% | Reduced |
| Edmond de Rothschild Holding S.A. | 252,600 | $4.84M | 0.09% | +252,600 | New |
| Renaissance Technologies LLC | 286,127 | $5.48M | 0.01% | −29,600−9.4% | Reduced |
| DAFNA Capital Management LLC | 294,208 | $5.64M | 1.60% | +71,000+31.8% | Added |
| Nuveen, LLC | 308,315 | $5.91M | 0.00% | +308,315 | New |
| Envestnet Asset Management Inc | 318,530 | $6.10M | 0.00% | +64,467+25.4% | Added |
| Silvercrest Asset Management Group LLC | 346,095 | $6.63M | 0.05% | −470−0.1% | Reduced |
| Standard Life Aberdeen plc | 356,218 | $6.83M | 0.01% | +107,354+43.1% | Added |
| Frontier Capital Management Co LLC | 365,176 | $7.00M | 0.08% | +93,088+34.2% | Added |
| Ameriprise Financial Inc | 387,887 | $7.22M | 0.00% | +42,206+12.2% | Added |
| Principal Financial Group Inc | 399,450 | $7.65M | 0.00% | +11,103+2.9% | Added |
| Tudor Investment Corp Et Al | 405,292 | $7.77M | 0.07% | +236,249+139.8% | Added |
| Bank of New York Mellon Corp | 407,482 | $7.81M | 0.00% | −29,210−6.7% | Reduced |
| BNP Paribas Arbitrage, SA | 459,798 | $8.81M | 0.01% | +434,979+1,752.6% | Added |
| Bank of America Corp | 466,730 | $8.94M | 0.00% | +149,024+46.9% | Added |
| Kingdon Capital Management, L.L.C. | 495,229 | $9.49M | 1.97% | −295,318−37.4% | Reduced |
| Soleus Capital Management, L.P. | 496,039 | $9.50M | 0.75% | +496,039 | New |
| Barclays PLC | 514,006 | $9.85M | 0.00% | +37,032+7.8% | Added |
| Charles Schwab Investment Management Inc | 570,150 | $10.9M | 0.00% | −32,171−5.3% | Reduced |
| Brown Capital Management LLC | 591,014 | $11.3M | 0.34% | −51,006−7.9% | Reduced |
| Two Sigma Investments, LP | 641,442 | $12.3M | 0.03% | −219,746−25.5% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 644,988 | $12.4M | 0.05% | +129,926+25.2% | Added |
| Two Sigma Advisers, LP | 679,583 | $13.0M | 0.03% | −202,200−22.9% | Reduced |
| Northern Trust Corp | 689,534 | $13.2M | 0.00% | −7,922−1.1% | Reduced |
| Goldman Sachs Group Inc | 712,559 | $13.7M | 0.00% | +34,069+5.0% | Added |
| Baillie Gifford & Co | 732,574 | $14.0M | 0.01% | −13,535−1.8% | Reduced |
| Capital World Investors | 767,000 | $14.7M | 0.00% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 769,743 | $14.7M | 0.04% | +769,743 | New |
| UBS Group AG | 835,692 | $16.0M | 0.00% | +209,342+33.4% | Added |
| Brown Advisory Inc | 925,310 | $17.7M | 0.03% | +12,223+1.3% | Added |
| Morgan Stanley | 930,969 | $17.8M | 0.00% | +83,860+9.9% | Added |
| Park West Asset Management LLC | 1,123,052 | $21.5M | 1.76% | −476,948−29.8% | Reduced |
| Champlain Investment Partners, LLC | 1,368,888 | $26.2M | 0.19% | −10,975−0.8% | Reduced |
| FMR LLC | 1,437,076 | $27.5M | 0.00% | +350,234+32.2% | Added |
| Fred Alger Management, LLC | 1,454,239 | $27.9M | 0.16% | −489,117−25.2% | Reduced |
| Jacobs Levy Equity Management, Inc | 1,471,569 | $28.2M | 0.11% | −189,444−11.4% | Reduced |
| Jennison Associates LLC | 1,477,108 | $28.3M | 0.02% | +10,753+0.7% | Added |
| Geode Capital Management, LLC | 1,557,210 | $29.8M | 0.00% | +23,382+1.5% | Added |
| Paradice Investment Management LLC | 1,649,907 | $31.6M | 7.06% | +693,500+72.5% | Added |
| Stephens Investment Management Group LLC | 1,706,915 | $32.7M | 0.47% | +151,106+9.7% | Added |
| Hood River Capital Management LLC | 2,312,044 | $44.3M | 0.76% | +1,033,997+80.9% | Added |
| State Street Corp | 2,687,739 | $51.5M | 0.00% | −77,398−2.8% | Reduced |
| ArrowMark Colorado Holdings LLC | 2,716,332 | $52.0M | 0.84% | −7,383−0.3% | Reduced |
| GW&K Investment Management, LLC | 2,863,987 | $54.9M | 0.51% | +740,499+34.9% | Added |
| Sessa Capital IM, L.P. | 4,466,307 | $85.6M | 3.53% | +4,466,307 | New |
| Vanguard Group Inc | 7,292,169 | $139.7M | 0.00% | −147,836−2.0% | Reduced |
| BlackRock, Inc. | 11,028,712 | $211.3M | 0.00% | −669,112−5.7% | Reduced |
| Proequities, Inc. | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Gilder Gagnon Howe & Co LLC | 0 | $0 | 0.00% | −931,894−100.0% | Sold out |
| Bellevue Group AG | 0 | $0 | 0.00% | −782,456−100.0% | Sold out |
| Capital International Investors | 0 | $0 | 0.00% | −718,038−100.0% | Sold out |
| Oberweis Asset Management Inc | 0 | $0 | 0.00% | −506,600−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −495,311−100.0% | Sold out |
| Trexquant Investment LP | 0 | $0 | 0.00% | −211,206−100.0% | Sold out |
| Next Century Growth Investors LLC | 0 | $0 | 0.00% | −201,839−100.0% | Sold out |
| 4D Advisors, LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Freestone Grove Partners LP | 0 | $0 | 0.00% | −181,124−100.0% | Sold out |
| Lisanti Capital Growth, LLC | 0 | $0 | 0.00% | −118,550−100.0% | Sold out |
| Assenagon Asset Management S.A. | 0 | $0 | 0.00% | −98,231−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −93,987−100.0% | Sold out |
| Banque Pictet & Cie SA | 0 | $0 | 0.00% | −87,286−100.0% | Sold out |
| M&T Bank Corp | 0 | $0 | 0.00% | −58,170−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −51,703−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −37,710−100.0% | Sold out |
| Integrated Quantitative Investments LLC | 0 | $0 | 0.00% | −31,900−100.0% | Sold out |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −31,251−100.0% | Sold out |
| Cambridge Investment Research Advisors, Inc. | 0 | $0 | 0.00% | −23,953−100.0% | Sold out |
| B. Metzler seel. Sohn & Co. AG | 0 | $0 | 0.00% | −21,870−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −20,335−100.0% | Sold out |
| Beacon Investment Advisory Services, Inc. | 0 | $0 | 0.00% | −18,905−100.0% | Sold out |
| Connective Capital Management, LLC | 0 | $0 | 0.00% | −16,960−100.0% | Sold out |
| Guggenheim Capital LLC | 0 | $0 | 0.00% | −16,107−100.0% | Sold out |