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 2023
Institutional positions in Tandem Diabetes Care Inc as of Mar 31, 2023. 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
- 274
- −18 vs. Q4 2022
- Shares held
- 68.1M
- +3.82M (+5.9%) vs. Q4 2022
- Total value
- $2.77B
- −$120.0M (−4.2%) vs. Q4 2022
- New holders
- 34
- 117 more added
- Sold out
- 52
- 92 more reduced
3 institutions that held it in Q4 2022 haven't filed for Q1 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2022: 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 2023
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q4 2022.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Landscape Capital Management, L.L.C. | 9,208 | $373.9K | 0.05% | +9,208 | New |
| Ontario Teachers Pension Plan Board | 9,238 | $375.2K | 0.00% | 00.0% | Unchanged |
| Versor Investments LP | 9,457 | $384.0K | 0.05% | −2,145−18.5% | Reduced |
| Commonwealth Equity Services, LLC | 9,835 | $399.0K | 0.00% | +91+0.9% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 10,448 | $424.3K | 0.00% | +1,310+14.3% | Added |
| Virginia Retirement Systems Et Al | 10,600 | $430.5K | 0.00% | 00.0% | Unchanged |
| Handelsbanken Fonder AB | 10,700 | $435.0K | 0.00% | 00.0% | Unchanged |
| SG Americas Securities, LLC | 10,791 | $438.0K | 0.01% | −8,035−42.7% | Reduced |
| Legato Capital Management LLC | 10,827 | $439.7K | 0.08% | −4,785−30.6% | Reduced |
| US Bancorp | 11,168 | $453.5K | 0.00% | +74+0.7% | Added |
| Polar Capital Holdings Plc | 11,210 | $455.2K | 0.00% | −9,296−45.3% | Reduced |
| Capital Group Investment Management Pte. Ltd. | 11,300 | $458.9K | 0.02% | −717−6.0% | Reduced |
| Bokf, NA | 12,091 | $491.0K | 0.01% | +12,091 | New |
| American Century Companies Inc | 12,391 | $503.2K | 0.00% | +732+6.3% | Added |
| Bank of Montreal | 12,664 | $516.2K | 0.00% | −1,955−13.4% | Reduced |
| Mutual of America Capital Management LLC | 13,241 | $537.7K | 0.01% | −39,571−74.9% | Reduced |
| Bridge City Capital, LLC | 13,464 | $546.8K | 0.27% | −48−0.4% | Reduced |
| Janney Montgomery Scott LLC | 14,647 | $595.0K | 0.00% | +1,419+10.7% | Added |
| Advisor Group Holdings, Inc. | 14,757 | $599.4K | 0.00% | −2,573−14.8% | Reduced |
| Bank Julius Baer & Co. Ltd, Zurich | 14,997 | $609.0K | 0.00% | +1,094+7.9% | Added |
| Granite Point Capital Management, L.P. | 15,000 | $609.1K | 2.20% | +15,000 | New |
| Teachers Retirement System of the State of Kentucky | 15,212 | $618.0K | 0.01% | +5,600+58.3% | Added |
| Mercer Global Advisors Inc | 15,485 | $629.0K | 0.00% | +1,219+8.5% | Added |
| Maverick Capital LtdSuperinvestorMaverick Capital | 15,615 | $634.1K | 0.02% | +15,615 | New |
| Axq Capital, LP | 17,184 | $697.8K | 0.28% | +17,184 | New |
| PDT Partners, LLC | 17,886 | $726.4K | 0.10% | −11,724−39.6% | Reduced |
| LMR Partners LLP | 18,069 | $733.8K | 0.02% | +18,069 | New |
| Natixis | 18,151 | $737.1K | 0.01% | −542−2.9% | Reduced |
| Diversified Trust Co | 18,249 | $741.1K | 0.03% | +79+0.4% | Added |
| Arizona State Retirement System | 18,630 | $756.6K | 0.01% | +509+2.8% | Added |
| B. Metzler seel. Sohn & Co. AG | 19,209 | $780.1K | 0.01% | +1,826+10.5% | Added |
| Davy Global Fund Management Ltd | 19,265 | $782.4K | 0.15% | +1,240+6.9% | Added |
| Apollon Wealth Management, LLC | 19,428 | $789.0K | 0.05% | −141−0.7% | Reduced |
| Schonfeld Strategic Advisors LLC | 19,502 | $792.0K | 0.01% | −18,695−48.9% | Reduced |
| Divisadero Street Capital Management, LP | 20,000 | $812.2K | 0.36% | +20,000 | New |
| Shell Asset Management Co | 20,309 | $825.0K | 0.03% | +9,536+88.5% | Added |
| Oregon Public Employees Retirement Fund | 20,700 | $840.6K | 0.01% | +1,955+10.4% | Added |
| Hawk Ridge Capital Management LP | 21,200 | $860.9K | 0.05% | 00.0% | Unchanged |
| LPL Financial LLC | 21,292 | $864.7K | 0.00% | −9,724−31.4% | Reduced |
| Chartwell Investment Partners, LLC | 21,423 | $870.0K | 0.03% | +716+3.5% | Added |
| Envestnet Asset Management Inc | 21,669 | $880.0K | 0.00% | −1,598−6.9% | Reduced |
| Ensign Peak Advisors, Inc | 22,620 | $918.6K | 0.00% | +50+0.2% | Added |
| HighMark Wealth Management LLC | 23,375 | $949.3K | 0.74% | 00.0% | Unchanged |
| Capital International Inc | 23,628 | $959.5K | 0.02% | 00.0% | Unchanged |
| Formula Growth Ltd | 23,746 | $964.3K | 0.31% | −23,507−49.7% | Reduced |
| Aigen Investment Management, LP | 24,404 | $991.0K | 0.14% | +14,511+146.7% | Added |
| Beacon Investment Advisory Services, Inc. | 25,414 | $1.03M | 0.05% | −3,710−12.7% | Reduced |
| Raymond James Financial Services Advisors, Inc. | 26,280 | $1.07M | 0.00% | +7,850+42.6% | Added |
| Treasurer of the State of North Carolina | 27,893 | $1.13M | 0.01% | +200+0.7% | Added |
| Louisiana State Employees Retirement System | 30,000 | $1.22M | 0.03% | +12,800+74.4% | Added |
| Citigroup Inc | 30,012 | $1.22M | 0.00% | +20,380+211.6% | Added |
| Maryland State Retirement & Pension System | 30,694 | $1.25M | 0.03% | +25,894+539.5% | Added |
| Public Employees Retirement System of Ohio | 31,723 | $1.29M | 0.01% | −985−3.0% | Reduced |
| Spouting Rock Asset Management, LLC | 32,232 | $1.31M | 0.46% | +2,864+9.8% | Added |
| Candriam Luxembourg S.C.A. | 36,587 | $1.37M | 0.01% | +18,000+96.8% | Added |
| Amalgamated Bank | 33,714 | $1.37M | 0.01% | −15,630−31.7% | Reduced |
| Macquarie Group Ltd | 35,444 | $1.44M | 0.00% | −293,280−89.2% | Reduced |
| Raymond James & Associates | 36,189 | $1.47M | 0.00% | +5,236+16.9% | Added |
| Yousif Capital Management, LLC | 36,283 | $1.47M | 0.02% | +3,244+9.8% | Added |
| Jane Street Group, LLC | 36,614 | $1.49M | 0.00% | −7,374−16.8% | Reduced |
| Man Group plc | – | $1.51M | 0.01% | – | – |
| Deutsche Bank AG | 37,829 | $1.54M | 0.00% | −53,582−58.6% | Reduced |
| Assenagon Asset Management S.A. | 38,425 | $1.56M | 0.01% | −49,087−56.1% | Reduced |
| Royal Bank of Canada | 41,568 | $1.69M | 0.00% | +8,390+25.3% | Added |
| Alliancebernstein L.P. | 43,113 | $1.75M | 0.00% | −49,927−53.7% | Reduced |
| State of Alaska, Department of Revenue | 44,041 | $1.79M | 0.02% | +35,131+394.3% | Added |
| Millrace Asset Group, Inc. | 44,767 | $1.82M | 2.12% | −11,444−20.4% | Reduced |
| Capital International Sarl | 47,792 | $1.94M | 0.10% | +7,403+18.3% | Added |
| Russell Investments Group, Ltd. | 50,698 | $2.06M | 0.00% | +49,992+7,081.0% | Added |
| Walleye Capital LLC | 53,338 | $2.17M | 0.04% | +35,861+205.2% | Added |
| Wells Fargo & Company | 54,596 | $2.22M | 0.00% | +5,519+11.2% | Added |
| Brookfield Asset Management Inc. | 56,816 | $2.31M | 0.01% | +22,595+66.0% | Added |
| Texas Permanent School Fund | 57,529 | $2.34M | 0.02% | +14,344+33.2% | Added |
| Capital International Ltd | 58,037 | $2.36M | 0.14% | +5,731+11.0% | Added |
| State of New Jersey Common Pension Fund D | 58,895 | $2.39M | 0.01% | 00.0% | Unchanged |
| Voya Investment Management LLC | 59,254 | $2.41M | 0.00% | −14,121−19.2% | Reduced |
| Kennedy Capital Management, Inc. | 59,558 | $2.42M | 0.07% | +76+0.1% | Added |
| Prudential Financial Inc | 59,675 | $2.42M | 0.00% | +59,675 | New |
| BNP Paribas Arbitrage, SA | 63,322 | $2.57M | 0.01% | +17,773+39.0% | Added |
| Thrivent Financial for Lutherans | 63,721 | $2.59M | 0.01% | +46,594+272.0% | Added |
| Gotham Asset Management, LLC | 64,566 | $2.62M | 0.06% | +20,806+47.5% | Added |
| KBC Group NV | 67,925 | $2.76M | 0.01% | +5,276+8.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 68,081 | $2.76M | 0.02% | +39,156+135.4% | Added |
| State Board of Administration of Florida Retirement System | 68,179 | $2.77M | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 68,392 | $2.78M | 0.00% | +30,731+81.6% | Added |
| State of Tennessee, Treasury Department | 68,706 | $2.79M | 0.01% | +18,706+37.4% | Added |
| Tudor Investment Corp Et Al | 70,176 | $2.85M | 0.05% | +70,176 | New |
| Lombard Odier Asset Management (Switzerland) SA | 70,881 | $2.88M | 0.25% | −2,208−3.0% | Reduced |
| Quantbot Technologies LP | 71,384 | $2.90M | 0.21% | −919−1.3% | Reduced |
| New York State Teachers Retirement System | 73,624 | $2.99M | 0.01% | +9,529+14.9% | Added |
| Bridgewater Associates, LP | 78,984 | $3.21M | 0.02% | +3,137+4.1% | Added |
| Great West Life Assurance Co | 79,659 | $3.23M | 0.01% | +19,491+32.4% | Added |
| California State Teachers Retirement System | 80,370 | $3.26M | 0.00% | −1,137−1.4% | Reduced |
| Credit Suisse AG | 81,509 | $3.31M | 0.00% | −1,674−2.0% | Reduced |
| SEI Investments Co | 82,965 | $3.37M | 0.01% | +2,512+3.1% | Added |
| Canada Pension Plan Investment Board | 88,700 | $3.60M | 0.01% | +31,400+54.8% | Added |
| Victory Capital Management Inc | 91,203 | $3.70M | 0.00% | +16,150+21.5% | Added |
| California Public Employees Retirement System | 91,206 | $3.70M | 0.00% | −27,152−22.9% | Reduced |
| State of Wisconsin Investment Board | 91,388 | $3.71M | 0.01% | −8,018−8.1% | Reduced |
| UBS Asset Management Americas Inc | 91,953 | $3.73M | 0.00% | +3,585+4.1% | Added |