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 |
|---|---|---|---|---|---|
| California State Teachers Retirement System | 61,237 | $1.17M | 0.00% | 00.0% | Unchanged |
| Semanteon Capital Management, LP | 55,413 | $1.06M | 0.58% | +55,413 | New |
| Deutsche Bank AG | 54,164 | $1.04M | 0.00% | −7,607−12.3% | Reduced |
| Great West Life Assurance Co | 53,278 | $1.02M | 0.00% | −8,895−14.3% | Reduced |
| LPL Financial LLC | 53,272 | $1.02M | 0.00% | +5,236+10.9% | Added |
| Price T Rowe Associates Inc | 52,843 | $1.01M | 0.00% | +2,103+4.1% | Added |
| JB Capital LLC | 51,778 | $992.1K | 0.05% | +12,565+32.0% | Added |
| Group One Trading, L.P. | 51,460 | $986.0K | 0.04% | +49,871+3,138.5% | Added |
| Intech Investment Management LLC | 50,479 | $967.2K | 0.01% | +21,821+76.1% | Added |
| Thrivent Financial for Lutherans | 48,241 | $924.0K | 0.00% | −2,524−5.0% | Reduced |
| Brinker Capital Investments, LLC | 47,088 | $902.2K | 0.01% | +17,014+56.6% | Added |
| Orion Portfolio Solutions, LLC | 47,088 | $902.2K | 0.01% | +17,014+56.6% | Added |
| US Bancorp | 42,688 | $817.9K | 0.00% | +3,980+10.3% | Added |
| First Trust Advisors LP | 39,876 | $764.0K | 0.00% | −38,025−48.8% | Reduced |
| MetLife Investment Management | 39,091 | $749.0K | 0.00% | −597−1.5% | Reduced |
| Capital Fund Management S.A. | 38,857 | $744.5K | 0.01% | −161,420−80.6% | Reduced |
| Janney Montgomery Scott LLC | 38,450 | $737.0K | 0.00% | +8,210+27.1% | Added |
| Prelude Capital Management, LLC | 38,159 | $731.1K | 0.07% | −59,531−60.9% | Reduced |
| State of Alaska, Department of Revenue | 36,391 | $697.0K | 0.01% | −935−2.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 36,060 | $692.4K | 0.00% | −265,554−88.0% | Reduced |
| Landscape Capital Management, L.L.C. | 35,942 | $688.6K | 0.06% | +16,307+83.1% | Added |
| Stifel Financial Corp | 35,295 | $676.2K | 0.00% | +522+1.5% | Added |
| Corebridge Financial, Inc. | 34,290 | $657.0K | 0.00% | −672−1.9% | Reduced |
| Manufacturers Life Insurance Company, The | 32,793 | $628.3K | 0.00% | −2,238−6.4% | Reduced |
| Teacher Retirement System of Texas | 32,465 | $622.0K | 0.00% | +4,895+17.8% | Added |
| Commerce Bank | 31,767 | $608.7K | 0.00% | +4,878+18.1% | Added |
| Louisiana State Employees Retirement System | 30,900 | $592.0K | 0.01% | −900−2.8% | Reduced |
| Versor Investments LP | 30,500 | $584.4K | 0.10% | +30,500 | New |
| Janus Henderson Group PLC | 29,811 | $574.9K | 0.00% | 00.0% | Unchanged |
| Verition Fund Management LLC | 29,918 | $573.2K | 0.00% | +29,918 | New |
| State of Tennessee, Treasury Department | 29,836 | $571.7K | 0.00% | 00.0% | Unchanged |
| Comerica Bank | 29,692 | $568.9K | 0.00% | +1,739+6.2% | Added |
| Virginia Retirement Systems Et Al | 28,400 | $544.1K | 0.00% | +28,400 | New |
| Franklin Resources Inc | 27,671 | $530.2K | 0.00% | +857+3.2% | Added |
| Man Group plc | 27,321 | $523.5K | 0.00% | +27,321 | New |
| Bayforest Capital Ltd | 26,288 | $503.7K | 0.22% | +17,436+197.0% | Added |
| Ensign Peak Advisors, Inc | 25,532 | $489.2K | 0.00% | 00.0% | Unchanged |
| Shell Asset Management Co | 25,281 | $484.0K | 0.02% | −1,000−3.8% | Reduced |
| HighMark Wealth Management LLC | 25,170 | $482.3K | 0.28% | 00.0% | Unchanged |
| Yousif Capital Management, LLC | 25,001 | $479.0K | 0.01% | −397−1.6% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 23,142 | $452.9K | 0.00% | +15,946+221.6% | Added |
| Scientech Research LLC | 23,372 | $447.8K | 0.12% | +23,372 | New |
| Amundi | 25,184 | $444.7K | 0.00% | −44,687−64.0% | Reduced |
| OP Asset Management Ltd | 23,000 | $440.7K | 0.01% | +23,000 | New |
| Aquatic Capital Management LLC | 22,648 | $433.9K | 0.01% | +1,402+6.6% | Added |
| Bessemer Group Inc | 22,509 | $431.0K | 0.00% | −15−0.1% | Reduced |
| Advisors Asset Management, Inc. | 22,460 | $430.3K | 0.01% | +1,664+8.0% | Added |
| 1492 Capital Management LLC | 22,446 | $430.1K | 0.23% | +22,446 | New |
| Mariner, LLC | 22,145 | $424.3K | 0.00% | +5,264+31.2% | Added |
| Handelsbanken Fonder AB | 22,000 | $422.0K | 0.00% | 00.0% | Unchanged |
| Captrust Financial Advisors | 21,517 | $412.3K | 0.00% | +3,004+16.2% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,449 | $411.0K | 0.00% | +3,503+19.5% | Added |
| Teachers Retirement System of the State of Kentucky | 21,290 | $408.0K | 0.00% | 00.0% | Unchanged |
| Chicago Capital, LLC | 20,726 | $397.1K | 0.01% | −949,881−97.9% | Reduced |
| The PNC Financial Services Group, Inc. | 19,235 | $368.5K | 0.00% | −3,004−13.5% | Reduced |
| Maryland State Retirement & Pension System | 19,137 | $366.7K | 0.01% | −2,970−13.4% | Reduced |
| Counterpoint Mutual Funds LLC | 18,963 | $363.3K | 0.05% | +18,963 | New |
| Arizona State Retirement System | 18,813 | $360.5K | 0.00% | −148−0.8% | Reduced |
| Amalgamated Bank | 18,776 | $360.0K | 0.00% | −448−2.3% | Reduced |
| Cetera Investment Advisers | 18,700 | $358.3K | 0.00% | +4,515+31.8% | Added |
| State Board of Administration of Florida Retirement System | 18,552 | $355.5K | 0.00% | 00.0% | Unchanged |
| CWM Advisors, LLC | 17,893 | $342.8K | 0.04% | +17,893 | New |
| Bridgefront Capital, LLC | 17,764 | $340.4K | 0.10% | +17,764 | New |
| Neuberger Berman Group LLC | 17,294 | $331.4K | 0.00% | +6,919+66.7% | Added |
| SG Americas Securities, LLC | 16,353 | $313.0K | 0.00% | +12,847+366.4% | Added |
| ExodusPoint Capital Management, LP | 15,986 | $306.0K | 0.00% | −238,071−93.7% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 15,717 | $301.1K | 0.00% | +1,696+12.1% | Added |
| ProShare Advisors LLC | 15,464 | $296.3K | 0.00% | −4,325−21.9% | Reduced |
| Oregon Public Employees Retirement Fund | 14,971 | $286.8K | 0.01% | −500−3.2% | Reduced |
| Diversified Trust Co | 14,623 | $280.2K | 0.01% | 00.0% | Unchanged |
| CIBC World Markets Corp | 14,571 | $279.2K | 0.00% | +8,426+137.1% | Added |
| HSBC Holdings PLC | 14,144 | $269.7K | 0.00% | −13,635−49.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 13,900 | $266.3K | 0.00% | 00.0% | Unchanged |
| KLP Kapitalforvaltning AS | 13,500 | $258.7K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 12,245 | $234.6K | 0.00% | −552,988−97.8% | Reduced |
| AQR Capital Management LLC | 12,069 | $230.0K | 0.00% | −1,836−13.2% | Reduced |
| Davy Global Fund Management Ltd | 11,851 | $227.1K | 0.03% | 00.0% | Unchanged |
| Dynamic Technology Lab Private Ltd | 11,766 | $225.0K | 0.03% | +11,766 | New |
| Park Avenue Securities LLC | 11,708 | $224.0K | 0.00% | +2,794+31.3% | Added |
| Jefferies Financial Group Inc. | 11,668 | $223.6K | 0.00% | +2,510+27.4% | Added |
| Atria Investments LLC | 11,569 | $221.7K | 0.00% | +1,468+14.5% | Added |
| Bank of Montreal | 11,390 | $218.2K | 0.00% | +1,386+13.9% | Added |
| CI Private Wealth, LLC | 11,269 | $215.9K | 0.00% | +3,425+43.7% | Added |
| Apollon Wealth Management, LLC | 11,074 | $212.2K | 0.00% | −3,738−25.2% | Reduced |
| Wolverine Trading, LLC | 10,973 | $211.6K | 0.01% | +10,973 | New |
| Brevan Howard Capital Management LP | 10,779 | $206.5K | 0.01% | −42,062−79.6% | Reduced |
| Allianz Asset Management GmbH | 10,700 | $205.0K | 0.00% | +10,700 | New |
| MML Investors Services, LLC | 10,718 | $205.0K | 0.00% | +2,442+29.5% | Added |
| MN Wealth Advisors, LLC | 10,623 | $203.5K | 0.12% | −7,331−40.8% | Reduced |
| Axq Capital, LP | 10,098 | $193.5K | 0.08% | +10,098 | New |
| Advisor Group Holdings, Inc. | 9,134 | $175.0K | 0.00% | +3,405+59.4% | Added |
| Quadrant Capital Group LLC | 9,078 | $173.9K | 0.01% | +3,278+56.5% | Added |
| Quest Partners LLC | 8,561 | $164.0K | 0.02% | +7,630+819.5% | Added |
| Public Employees Retirement Association of Colorado | 7,650 | $147.0K | 0.00% | 00.0% | Unchanged |
| Van Eck Associates Corp | 7,398 | $142.0K | 0.00% | +2,497+50.9% | Added |
| Ameritas Investment Partners, Inc. | 6,870 | $131.6K | 0.00% | 00.0% | Unchanged |
| Leonteq Securities AG | 6,848 | $131.1K | 0.01% | +4,082+147.6% | Added |
| Coldstream Capital Management Inc | 6,651 | $127.4K | 0.00% | +466+7.5% | Added |
| Canada Pension Plan Investment Board | 5,800 | $111.1K | 0.00% | −11,100−65.7% | Reduced |
| State of Wyoming | 4,467 | $85.6K | 0.01% | +1,471+49.1% | Added |