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 |
|---|---|---|---|---|---|
| Capital International Ltd | 58,037 | $2.36M | 0.14% | +5,731+11.0% | Added |
| Texas Permanent School Fund | 57,529 | $2.34M | 0.02% | +14,344+33.2% | Added |
| Brookfield Asset Management Inc. | 56,816 | $2.31M | 0.01% | +22,595+66.0% | Added |
| Wells Fargo & Company | 54,596 | $2.22M | 0.00% | +5,519+11.2% | Added |
| Walleye Capital LLC | 53,338 | $2.17M | 0.04% | +35,861+205.2% | Added |
| Russell Investments Group, Ltd. | 50,698 | $2.06M | 0.00% | +49,992+7,081.0% | Added |
| Capital International Sarl | 47,792 | $1.94M | 0.10% | +7,403+18.3% | Added |
| Millrace Asset Group, Inc. | 44,767 | $1.82M | 2.12% | −11,444−20.4% | Reduced |
| State of Alaska, Department of Revenue | 44,041 | $1.79M | 0.02% | +35,131+394.3% | Added |
| Alliancebernstein L.P. | 43,113 | $1.75M | 0.00% | −49,927−53.7% | Reduced |
| Royal Bank of Canada | 41,568 | $1.69M | 0.00% | +8,390+25.3% | Added |
| Assenagon Asset Management S.A. | 38,425 | $1.56M | 0.01% | −49,087−56.1% | Reduced |
| Deutsche Bank AG | 37,829 | $1.54M | 0.00% | −53,582−58.6% | Reduced |
| Man Group plc | – | $1.51M | 0.01% | – | – |
| Jane Street Group, LLC | 36,614 | $1.49M | 0.00% | −7,374−16.8% | Reduced |
| Yousif Capital Management, LLC | 36,283 | $1.47M | 0.02% | +3,244+9.8% | Added |
| Raymond James & Associates | 36,189 | $1.47M | 0.00% | +5,236+16.9% | Added |
| Macquarie Group Ltd | 35,444 | $1.44M | 0.00% | −293,280−89.2% | Reduced |
| Amalgamated Bank | 33,714 | $1.37M | 0.01% | −15,630−31.7% | Reduced |
| Candriam Luxembourg S.C.A. | 36,587 | $1.37M | 0.01% | +18,000+96.8% | Added |
| Spouting Rock Asset Management, LLC | 32,232 | $1.31M | 0.46% | +2,864+9.8% | Added |
| Public Employees Retirement System of Ohio | 31,723 | $1.29M | 0.01% | −985−3.0% | Reduced |
| Maryland State Retirement & Pension System | 30,694 | $1.25M | 0.03% | +25,894+539.5% | Added |
| Citigroup Inc | 30,012 | $1.22M | 0.00% | +20,380+211.6% | Added |
| Louisiana State Employees Retirement System | 30,000 | $1.22M | 0.03% | +12,800+74.4% | Added |
| Treasurer of the State of North Carolina | 27,893 | $1.13M | 0.01% | +200+0.7% | Added |
| Raymond James Financial Services Advisors, Inc. | 26,280 | $1.07M | 0.00% | +7,850+42.6% | Added |
| Beacon Investment Advisory Services, Inc. | 25,414 | $1.03M | 0.05% | −3,710−12.7% | Reduced |
| Aigen Investment Management, LP | 24,404 | $991.0K | 0.14% | +14,511+146.7% | Added |
| Formula Growth Ltd | 23,746 | $964.3K | 0.31% | −23,507−49.7% | Reduced |
| Capital International Inc | 23,628 | $959.5K | 0.02% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 23,375 | $949.3K | 0.74% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 22,620 | $918.6K | 0.00% | +50+0.2% | Added |
| Envestnet Asset Management Inc | 21,669 | $880.0K | 0.00% | −1,598−6.9% | Reduced |
| Chartwell Investment Partners, LLC | 21,423 | $870.0K | 0.03% | +716+3.5% | Added |
| LPL Financial LLC | 21,292 | $864.7K | 0.00% | −9,724−31.4% | Reduced |
| Hawk Ridge Capital Management LP | 21,200 | $860.9K | 0.05% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 20,700 | $840.6K | 0.01% | +1,955+10.4% | Added |
| Shell Asset Management Co | 20,309 | $825.0K | 0.03% | +9,536+88.5% | Added |
| Divisadero Street Capital Management, LP | 20,000 | $812.2K | 0.36% | +20,000 | New |
| Schonfeld Strategic Advisors LLC | 19,502 | $792.0K | 0.01% | −18,695−48.9% | Reduced |
| Apollon Wealth Management, LLC | 19,428 | $789.0K | 0.05% | −141−0.7% | Reduced |
| Davy Global Fund Management Ltd | 19,265 | $782.4K | 0.15% | +1,240+6.9% | Added |
| B. Metzler seel. Sohn & Co. AG | 19,209 | $780.1K | 0.01% | +1,826+10.5% | Added |
| Arizona State Retirement System | 18,630 | $756.6K | 0.01% | +509+2.8% | Added |
| Diversified Trust Co | 18,249 | $741.1K | 0.03% | +79+0.4% | Added |
| Natixis | 18,151 | $737.1K | 0.01% | −542−2.9% | Reduced |
| LMR Partners LLP | 18,069 | $733.8K | 0.02% | +18,069 | New |
| PDT Partners, LLC | 17,886 | $726.4K | 0.10% | −11,724−39.6% | Reduced |
| Axq Capital, LP | 17,184 | $697.8K | 0.28% | +17,184 | New |
| Maverick Capital LtdSuperinvestorMaverick Capital | 15,615 | $634.1K | 0.02% | +15,615 | New |
| Mercer Global Advisors Inc | 15,485 | $629.0K | 0.00% | +1,219+8.5% | Added |
| Teachers Retirement System of the State of Kentucky | 15,212 | $618.0K | 0.01% | +5,600+58.3% | Added |
| Granite Point Capital Management, L.P. | 15,000 | $609.1K | 2.20% | +15,000 | New |
| Bank Julius Baer & Co. Ltd, Zurich | 14,997 | $609.0K | 0.00% | +1,094+7.9% | Added |
| Advisor Group Holdings, Inc. | 14,757 | $599.4K | 0.00% | −2,573−14.8% | Reduced |
| Janney Montgomery Scott LLC | 14,647 | $595.0K | 0.00% | +1,419+10.7% | Added |
| Bridge City Capital, LLC | 13,464 | $546.8K | 0.27% | −48−0.4% | Reduced |
| Mutual of America Capital Management LLC | 13,241 | $537.7K | 0.01% | −39,571−74.9% | Reduced |
| Bank of Montreal | 12,664 | $516.2K | 0.00% | −1,955−13.4% | Reduced |
| American Century Companies Inc | 12,391 | $503.2K | 0.00% | +732+6.3% | Added |
| Bokf, NA | 12,091 | $491.0K | 0.01% | +12,091 | New |
| Capital Group Investment Management Pte. Ltd. | 11,300 | $458.9K | 0.02% | −717−6.0% | Reduced |
| Polar Capital Holdings Plc | 11,210 | $455.2K | 0.00% | −9,296−45.3% | Reduced |
| US Bancorp | 11,168 | $453.5K | 0.00% | +74+0.7% | Added |
| Legato Capital Management LLC | 10,827 | $439.7K | 0.08% | −4,785−30.6% | Reduced |
| SG Americas Securities, LLC | 10,791 | $438.0K | 0.01% | −8,035−42.7% | Reduced |
| Handelsbanken Fonder AB | 10,700 | $435.0K | 0.00% | 00.0% | Unchanged |
| Virginia Retirement Systems Et Al | 10,600 | $430.5K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 10,448 | $424.3K | 0.00% | +1,310+14.3% | Added |
| Commonwealth Equity Services, LLC | 9,835 | $399.0K | 0.00% | +91+0.9% | Added |
| Versor Investments LP | 9,457 | $384.0K | 0.05% | −2,145−18.5% | Reduced |
| Ontario Teachers Pension Plan Board | 9,238 | $375.2K | 0.00% | 00.0% | Unchanged |
| Landscape Capital Management, L.L.C. | 9,208 | $373.9K | 0.05% | +9,208 | New |
| Lattice Capital Management, LLC | 9,200 | $373.6K | 0.50% | 00.0% | Unchanged |
| Verition Fund Management LLC | 9,141 | $371.2K | 0.01% | +9,141 | New |
| Cetera Advisor Networks LLC | 9,050 | $367.5K | 0.00% | −1,000−10.0% | Reduced |
| Empire Financial Management Company, LLC | 8,750 | $355.3K | 0.14% | +8,750 | New |
| JustInvest LLC | 8,598 | $349.2K | 0.01% | +3,933+84.3% | Added |
| Xponance, Inc. | 8,233 | $334.3K | 0.00% | −6,181−42.9% | Reduced |
| Baird Financial Group, Inc. | 8,179 | $332.1K | 0.00% | −354−4.1% | Reduced |
| Oak Thistle LLC | 8,151 | $331.0K | 0.20% | −939−10.3% | Reduced |
| Public Employees Retirement Association of Colorado | 8,105 | $329.0K | 0.00% | 00.0% | Unchanged |
| AtonRa Partners | 7,378 | $299.6K | 0.44% | −1,038−12.3% | Reduced |
| Truist Financial Corp | 7,190 | $292.0K | 0.00% | +7,190 | New |
| Teacher Retirement System of Texas | 7,151 | $290.0K | 0.00% | +181+2.6% | Added |
| Pictet Asset Management SA | 7,082 | $287.6K | 0.00% | 00.0% | Unchanged |
| JB Capital LLC | 6,966 | $282.9K | 0.03% | +793+12.8% | Added |
| Prelude Capital Management, LLC | 6,514 | $264.5K | 0.02% | −3,159−32.7% | Reduced |
| Cambridge Investment Research Advisors, Inc. | 6,388 | $259.0K | 0.00% | +160+2.6% | Added |
| Pictet & Cie (Europe) SA | 6,377 | $259.0K | 0.01% | +6,377 | New |
| CI Private Wealth, LLC | 6,272 | $254.7K | 0.00% | +6,272 | New |
| Financial Alternatives, Inc | 6,223 | $252.5K | 0.24% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 5,899 | $239.6K | 0.00% | +5,899 | New |
| Crossmark Global Holdings, Inc. | 5,827 | $237.0K | 0.01% | +391+7.2% | Added |
| Dark Forest Capital Management LP | 5,756 | $233.8K | 0.06% | +5,734+26,063.6% | Added |
| Creative Planning | 5,687 | $230.9K | 0.00% | −1,085−16.0% | Reduced |
| Tarbox Family Office, Inc. | 5,509 | $223.7K | 0.05% | +11+0.2% | Added |
| Roundview Capital LLC | 5,344 | $217.0K | 0.02% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 5,297 | $215.1K | 0.00% | +3,184+150.7% | Added |