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 |
|---|---|---|---|---|---|
| Victory Capital Management Inc | 12,245 | $234.6K | 0.00% | −552,988−97.8% | Reduced |
| KLP Kapitalforvaltning AS | 13,500 | $258.7K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 13,900 | $266.3K | 0.00% | 00.0% | Unchanged |
| HSBC Holdings PLC | 14,144 | $269.7K | 0.00% | −13,635−49.1% | Reduced |
| CIBC World Markets Corp | 14,571 | $279.2K | 0.00% | +8,426+137.1% | Added |
| Diversified Trust Co | 14,623 | $280.2K | 0.01% | 00.0% | Unchanged |
| Oregon Public Employees Retirement Fund | 14,971 | $286.8K | 0.01% | −500−3.2% | Reduced |
| ProShare Advisors LLC | 15,464 | $296.3K | 0.00% | −4,325−21.9% | Reduced |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 15,717 | $301.1K | 0.00% | +1,696+12.1% | Added |
| ExodusPoint Capital Management, LP | 15,986 | $306.0K | 0.00% | −238,071−93.7% | Reduced |
| SG Americas Securities, LLC | 16,353 | $313.0K | 0.00% | +12,847+366.4% | Added |
| Neuberger Berman Group LLC | 17,294 | $331.4K | 0.00% | +6,919+66.7% | Added |
| Bridgefront Capital, LLC | 17,764 | $340.4K | 0.10% | +17,764 | New |
| CWM Advisors, LLC | 17,893 | $342.8K | 0.04% | +17,893 | New |
| State Board of Administration of Florida Retirement System | 18,552 | $355.5K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 18,700 | $358.3K | 0.00% | +4,515+31.8% | Added |
| Amalgamated Bank | 18,776 | $360.0K | 0.00% | −448−2.3% | Reduced |
| Arizona State Retirement System | 18,813 | $360.5K | 0.00% | −148−0.8% | Reduced |
| Counterpoint Mutual Funds LLC | 18,963 | $363.3K | 0.05% | +18,963 | New |
| Maryland State Retirement & Pension System | 19,137 | $366.7K | 0.01% | −2,970−13.4% | Reduced |
| The PNC Financial Services Group, Inc. | 19,235 | $368.5K | 0.00% | −3,004−13.5% | Reduced |
| Chicago Capital, LLC | 20,726 | $397.1K | 0.01% | −949,881−97.9% | Reduced |
| Teachers Retirement System of the State of Kentucky | 21,290 | $408.0K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 21,449 | $411.0K | 0.00% | +3,503+19.5% | Added |
| Captrust Financial Advisors | 21,517 | $412.3K | 0.00% | +3,004+16.2% | Added |
| Handelsbanken Fonder AB | 22,000 | $422.0K | 0.00% | 00.0% | Unchanged |
| Mariner, LLC | 22,145 | $424.3K | 0.00% | +5,264+31.2% | Added |
| 1492 Capital Management LLC | 22,446 | $430.1K | 0.23% | +22,446 | New |
| Advisors Asset Management, Inc. | 22,460 | $430.3K | 0.01% | +1,664+8.0% | Added |
| Bessemer Group Inc | 22,509 | $431.0K | 0.00% | −15−0.1% | Reduced |
| Aquatic Capital Management LLC | 22,648 | $433.9K | 0.01% | +1,402+6.6% | Added |
| OP Asset Management Ltd | 23,000 | $440.7K | 0.01% | +23,000 | New |
| Amundi | 25,184 | $444.7K | 0.00% | −44,687−64.0% | Reduced |
| Scientech Research LLC | 23,372 | $447.8K | 0.12% | +23,372 | New |
| Wiley Bros.-Aintree Capital, LLC | 23,142 | $452.9K | 0.00% | +15,946+221.6% | Added |
| Yousif Capital Management, LLC | 25,001 | $479.0K | 0.01% | −397−1.6% | Reduced |
| HighMark Wealth Management LLC | 25,170 | $482.3K | 0.28% | 00.0% | Unchanged |
| Shell Asset Management Co | 25,281 | $484.0K | 0.02% | −1,000−3.8% | Reduced |
| Ensign Peak Advisors, Inc | 25,532 | $489.2K | 0.00% | 00.0% | Unchanged |
| Bayforest Capital Ltd | 26,288 | $503.7K | 0.22% | +17,436+197.0% | Added |
| Man Group plc | 27,321 | $523.5K | 0.00% | +27,321 | New |
| Franklin Resources Inc | 27,671 | $530.2K | 0.00% | +857+3.2% | Added |
| Virginia Retirement Systems Et Al | 28,400 | $544.1K | 0.00% | +28,400 | New |
| Comerica Bank | 29,692 | $568.9K | 0.00% | +1,739+6.2% | Added |
| State of Tennessee, Treasury Department | 29,836 | $571.7K | 0.00% | 00.0% | Unchanged |
| Verition Fund Management LLC | 29,918 | $573.2K | 0.00% | +29,918 | New |
| Janus Henderson Group PLC | 29,811 | $574.9K | 0.00% | 00.0% | Unchanged |
| Versor Investments LP | 30,500 | $584.4K | 0.10% | +30,500 | New |
| Louisiana State Employees Retirement System | 30,900 | $592.0K | 0.01% | −900−2.8% | Reduced |
| Commerce Bank | 31,767 | $608.7K | 0.00% | +4,878+18.1% | Added |
| Teacher Retirement System of Texas | 32,465 | $622.0K | 0.00% | +4,895+17.8% | Added |
| Manufacturers Life Insurance Company, The | 32,793 | $628.3K | 0.00% | −2,238−6.4% | Reduced |
| Corebridge Financial, Inc. | 34,290 | $657.0K | 0.00% | −672−1.9% | Reduced |
| Stifel Financial Corp | 35,295 | $676.2K | 0.00% | +522+1.5% | Added |
| Landscape Capital Management, L.L.C. | 35,942 | $688.6K | 0.06% | +16,307+83.1% | Added |
| Mirae Asset Global Investments Co., Ltd. | 36,060 | $692.4K | 0.00% | −265,554−88.0% | Reduced |
| State of Alaska, Department of Revenue | 36,391 | $697.0K | 0.01% | −935−2.5% | Reduced |
| Prelude Capital Management, LLC | 38,159 | $731.1K | 0.07% | −59,531−60.9% | Reduced |
| Janney Montgomery Scott LLC | 38,450 | $737.0K | 0.00% | +8,210+27.1% | Added |
| Capital Fund Management S.A. | 38,857 | $744.5K | 0.01% | −161,420−80.6% | Reduced |
| MetLife Investment Management | 39,091 | $749.0K | 0.00% | −597−1.5% | Reduced |
| First Trust Advisors LP | 39,876 | $764.0K | 0.00% | −38,025−48.8% | Reduced |
| US Bancorp | 42,688 | $817.9K | 0.00% | +3,980+10.3% | Added |
| 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 |
| Thrivent Financial for Lutherans | 48,241 | $924.0K | 0.00% | −2,524−5.0% | Reduced |
| Intech Investment Management LLC | 50,479 | $967.2K | 0.01% | +21,821+76.1% | Added |
| Group One Trading, L.P. | 51,460 | $986.0K | 0.04% | +49,871+3,138.5% | Added |
| JB Capital LLC | 51,778 | $992.1K | 0.05% | +12,565+32.0% | Added |
| Price T Rowe Associates Inc | 52,843 | $1.01M | 0.00% | +2,103+4.1% | Added |
| LPL Financial LLC | 53,272 | $1.02M | 0.00% | +5,236+10.9% | Added |
| Great West Life Assurance Co | 53,278 | $1.02M | 0.00% | −8,895−14.3% | Reduced |
| Deutsche Bank AG | 54,164 | $1.04M | 0.00% | −7,607−12.3% | Reduced |
| Semanteon Capital Management, LP | 55,413 | $1.06M | 0.58% | +55,413 | New |
| California State Teachers Retirement System | 61,237 | $1.17M | 0.00% | 00.0% | Unchanged |
| Hussman Strategic Advisors, Inc. | 63,000 | $1.21M | 0.29% | +63,000 | New |
| Natixis Advisors, L.P. | 65,573 | $1.26M | 0.00% | −105−0.2% | Reduced |
| Wells Fargo & Company | 66,910 | $1.28M | 0.00% | +5,655+9.2% | Added |
| HighTower Advisors, LLC | 67,168 | $1.29M | 0.00% | +57,635+604.6% | Added |
| New York State Teachers Retirement System | 68,200 | $1.31M | 0.00% | 00.0% | Unchanged |
| Gotham Asset Management, LLC | 68,629 | $1.31M | 0.01% | −47,247−40.8% | Reduced |
| Dark Forest Capital Management LP | 70,128 | $1.34M | 0.06% | +70,128 | New |
| Marshall Wace, LLP | 70,399 | $1.35M | 0.00% | −880,549−92.6% | Reduced |
| Oppenheimer Asset Management Inc. | 72,752 | $1.39M | 0.02% | +11,048+17.9% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 74,413 | $1.43M | 0.00% | +2,096+2.9% | Added |
| Cerity Partners LLC | 76,005 | $1.46M | 0.00% | +18,529+32.2% | Added |
| Mangrove Partners | 82,428 | $1.58M | 0.18% | +33,687+69.1% | Added |
| Jupiter Asset Management Ltd | 87,815 | $1.68M | 0.02% | +87,815 | New |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 87,823 | $1.68M | 0.00% | +87,823 | New |
| Citigroup Inc | 101,189 | $1.94M | 0.00% | +5,976+6.3% | Added |
| Moore Capital Management, LP | 104,451 | $2.00M | 0.07% | +83,453+397.4% | Added |
| Rice Hall James & Associates, LLC | 104,956 | $2.01M | 0.12% | −526−0.5% | Reduced |
| Citadel Advisors LLC | 114,034 | $2.18M | 0.00% | −17,792−13.5% | Reduced |
| Mizuho Markets Americas LLC | 115,772 | $2.22M | 0.05% | +30,680+36.1% | Added |
| Squarepoint Ops LLC | 123,883 | $2.37M | 0.01% | +60,564+95.6% | Added |
| Formula Growth Ltd | 123,945 | $2.37M | 0.96% | −2,020−1.6% | Reduced |
| SEI Investments Co | 124,356 | $2.38M | 0.00% | +549+0.4% | Added |
| Swiss National Bank | 127,300 | $2.44M | 0.00% | −1,400−1.1% | Reduced |
| Gsa Capital Partners LLP | 130,595 | $2.50M | 0.23% | +130,595 | New |
| Voya Investment Management LLC | 136,698 | $2.62M | 0.00% | +38,519+39.2% | Added |