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, Q3 2023
Institutional positions in Tandem Diabetes Care Inc as of Sep 30, 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
- 226
- −19 vs. Q2 2023
- Shares held
- 69.6M
- +2.42M (+3.6%) vs. Q2 2023
- Total value
- $1.45B
- −$204.6M (−12.4%) vs. Q2 2023
- New holders
- 26
- 80 more added
- Sold out
- 45
- 89 more reduced
2 institutions that held it in Q2 2023 haven't filed for Q3 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2023: 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, Q3 2023
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 8,856,487 | $183.9M | 0.01% | −113,740−1.3% | Reduced |
| Vanguard Group Inc | 7,003,335 | $145.5M | 0.00% | −9,568−0.1% | Reduced |
| Capital World Investors | 6,545,338 | $135.9M | 0.03% | +59,311+0.9% | Added |
| Eminence Capital, LP | 5,490,017 | $114.0M | 2.26% | +2,372,458+76.1% | Added |
| FMR LLC | 2,992,067 | $62.1M | 0.01% | −1,568,238−34.4% | Reduced |
| Janus Henderson Group PLC | 2,671,231 | $55.5M | 0.04% | +586,832+28.2% | Added |
| State Street Corp | 2,169,844 | $45.1M | 0.00% | −87,584−3.9% | Reduced |
| Bellevue Group AG | 2,142,769 | $44.5M | 0.72% | +49,835+2.4% | Added |
| Capital International Investors | 1,794,187 | $37.3M | 0.01% | +558,943+45.2% | Added |
| ArrowMark Colorado Holdings LLC | 1,631,544 | $33.9M | 0.41% | +1,631,544 | New |
| Champlain Investment Partners, LLC | 1,615,879 | $33.6M | 0.22% | −2,841−0.2% | Reduced |
| Brown Capital Management LLC | 1,564,542 | $32.5M | 0.50% | −27,187−1.7% | Reduced |
| Paradice Investment Management LLC | 1,520,065 | $31.6M | 2.71% | +293,250+23.9% | Added |
| First Light Asset Management, LLC | 1,440,966 | $29.9M | 2.84% | +840,199+139.9% | Added |
| Jennison Associates LLC | 1,122,915 | $23.3M | 0.02% | +804,488+252.6% | Added |
| Voloridge Investment Management, LLC | 1,047,963 | $21.8M | 0.11% | +170,932+19.5% | Added |
| Two Sigma Advisers, LP | 1,030,383 | $21.4M | 0.05% | −183,100−15.1% | Reduced |
| Geode Capital Management, LLC | 999,311 | $20.8M | 0.00% | +25,959+2.7% | Added |
| Stephens Investment Management Group LLC | 989,095 | $20.5M | 0.34% | −21,486−2.1% | Reduced |
| Chicago Capital, LLC | 904,410 | $18.8M | 0.88% | +791,336+699.8% | Added |
| Jacobs Levy Equity Management, Inc | 793,488 | $16.5M | 0.10% | +2,633+0.3% | Added |
| Two Sigma Investments, LP | 780,534 | $16.2M | 0.05% | −427,271−35.4% | Reduced |
| Morgan Stanley | 774,643 | $16.1M | 0.00% | +371,356+92.1% | Added |
| Citadel Advisors LLC | 645,364 | $13.4M | 0.01% | +474,239+277.1% | Added |
| Bank of New York Mellon Corp | 514,657 | $10.7M | 0.00% | −888−0.2% | Reduced |
| Millennium Management LLC | 503,869 | $10.5M | 0.01% | −543,516−51.9% | Reduced |
| Northern Trust Corp | 376,889 | $7.83M | 0.00% | +8,012+2.2% | Added |
| Charles Schwab Investment Management Inc | 367,011 | $7.62M | 0.00% | +16,586+4.7% | Added |
| Alliancebernstein L.P. | 365,132 | $7.58M | 0.00% | +191,348+110.1% | Added |
| Principal Financial Group Inc | 355,152 | $7.38M | 0.01% | −18,749−5.0% | Reduced |
| Coronation Fund Managers Ltd. | 354,904 | $7.37M | 0.22% | +147,058+70.8% | Added |
| Susquehanna International Group, LLP | 346,390 | $7.19M | 0.01% | +36,555+11.8% | Added |
| Fred Alger Management, LLC | 325,689 | $6.76M | 0.04% | +110,049+51.0% | Added |
| New York State Common Retirement Fund | 316,186 | $6.57M | 0.01% | −18,839−5.6% | Reduced |
| Invesco Ltd. | 273,834 | $5.69M | 0.00% | −22,508−7.6% | Reduced |
| Ameriprise Financial Inc | 272,879 | $5.66M | 0.00% | −12,072−4.2% | Reduced |
| Invenomic Capital Management LP | 272,444 | $5.66M | 0.24% | +190,273+231.6% | Added |
| Baillie Gifford & Co | 262,756 | $5.46M | 0.00% | 00.0% | Unchanged |
| Silvercrest Asset Management Group LLC | 255,072 | $5.30M | 0.04% | +63,373+33.1% | Added |
| D. E. Shaw & Co., Inc. | 250,944 | $5.21M | 0.01% | −351,116−58.3% | Reduced |
| Peregrine Capital Management LLC | 243,355 | $5.05M | 0.15% | +52,897+27.8% | Added |
| Alberta Investment Management Corp | 241,578 | $5.02M | 0.05% | +52,329+27.7% | Added |
| DAFNA Capital Management LLC | 220,708 | $4.58M | 1.43% | +110,708+100.6% | Added |
| Tudor Investment Corp Et Al | 215,382 | $4.47M | 0.07% | +8,292+4.0% | Added |
| Jump Financial, LLC | 204,230 | $4.24M | 0.16% | +41,060+25.2% | Added |
| Legal & General Group Plc | 182,742 | $3.80M | 0.00% | −584−0.3% | Reduced |
| Marshall Wace, LLP | 179,040 | $3.72M | 0.01% | −478,121−72.8% | Reduced |
| Rhumbline Advisers | 173,256 | $3.60M | 0.00% | −2,130−1.2% | Reduced |
| Norges Bank | 163,273 | $3.39M | 0.00% | −404,105−71.2% | Reduced |
| JPMorgan Chase & Co | 159,418 | $3.31M | 0.00% | −41,233−20.5% | Reduced |
| Nuveen Asset Management, LLC | 156,148 | $3.24M | 0.00% | −29,301−15.8% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 154,315 | $3.21M | 0.01% | −9,497−5.8% | Reduced |
| Squarepoint Ops LLC | 153,207 | $3.18M | 0.02% | −16,673−9.8% | Reduced |
| Frontier Capital Management Co LLC | 145,840 | $3.03M | 0.03% | −1,453−1.0% | Reduced |
| Swiss National Bank | 142,000 | $2.95M | 0.00% | +1,400+1.0% | Added |
| Russell Investments Group, Ltd. | 137,820 | $2.86M | 0.01% | +36,401+35.9% | Added |
| Dimensional Fund Advisors LP | 135,009 | $2.80M | 0.00% | −159,503−54.2% | Reduced |
| Integral Health Asset Management, LLC | 130,000 | $2.70M | 0.38% | +130,000 | New |
| Prudential Financial Inc | 129,724 | $2.70M | 0.00% | +52,540+68.1% | Added |
| KBC Group NV | 129,314 | $2.69M | 0.01% | +61,940+91.9% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 125,341 | $2.60M | 0.01% | −133,742−51.6% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 118,221 | $2.46M | 0.02% | 00.0% | Unchanged |
| Banque Pictet & Cie SA | 110,519 | $2.30M | 0.03% | +110,519 | New |
| Cubist Systematic Strategies, LLC | 108,056 | $2.24M | 0.03% | −273,106−71.7% | Reduced |
| Rice Hall James & Associates, LLC | 107,376 | $2.23M | 0.14% | +107,376 | New |
| Granahan Investment Management Inc | 98,924 | $2.05M | 0.07% | +10,124+11.4% | Added |
| Victory Capital Management Inc | 98,740 | $2.05M | 0.00% | +1,130+1.2% | Added |
| UBS Asset Management Americas Inc | 95,147 | $1.98M | 0.00% | +3,194+3.5% | Added |
| California Public Employees Retirement System | 91,206 | $1.89M | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 90,184 | $1.87M | 0.00% | +5,049+5.9% | Added |
| State of New Jersey Common Pension Fund D | 87,632 | $1.82M | 0.01% | −4,551−4.9% | Reduced |
| Credit Suisse AG | 85,682 | $1.78M | 0.00% | −2,480−2.8% | Reduced |
| State of Wisconsin Investment Board | 84,615 | $1.76M | 0.01% | −2,981−3.4% | Reduced |
| Barclays PLC | 84,140 | $1.75M | 0.00% | +18,025+27.3% | Added |
| Goldman Sachs Group Inc | 80,815 | $1.68M | 0.00% | −3,017−3.6% | Reduced |
| Public Sector Pension Investment Board | 80,436 | $1.67M | 0.01% | −34,269−29.9% | Reduced |
| Great West Life Assurance Co | 79,407 | $1.65M | 0.00% | +690+0.9% | Added |
| Bridgewater Associates, LP | 77,559 | $1.61M | 0.01% | +8,010+11.5% | Added |
| California State Teachers Retirement System | 71,440 | $1.48M | 0.00% | −7,031−9.0% | Reduced |
| New York State Teachers Retirement System | 70,000 | $1.45M | 0.00% | 00.0% | Unchanged |
| State Board of Administration of Florida Retirement System | 65,477 | $1.36M | 0.00% | +100+0.2% | Added |
| Trexquant Investment LP | 62,323 | $1.29M | 0.03% | +62,323 | New |
| ExodusPoint Capital Management, LP | 62,133 | $1.29M | 0.02% | −73,229−54.1% | Reduced |
| Thrivent Financial for Lutherans | 59,533 | $1.24M | 0.00% | −2,286−3.7% | Reduced |
| Dark Forest Capital Management LP | 58,710 | $1.22M | 0.10% | +41,769+246.6% | Added |
| Macquarie Group Ltd | 57,969 | $1.20M | 0.00% | +16,135+38.6% | Added |
| Wells Fargo & Company | 57,284 | $1.19M | 0.00% | −13,609−19.2% | Reduced |
| Capital International Ltd | 56,989 | $1.18M | 0.07% | −1,048−1.8% | Reduced |
| AXA S.A. | 56,156 | $1.17M | 0.00% | −185,584−76.8% | Reduced |
| Texas Permanent School Fund | 55,034 | $1.14M | 0.01% | −1,706−3.0% | Reduced |
| Millrace Asset Group, Inc. | 54,706 | $1.14M | 1.40% | +54,706 | New |
| Capital International Sarl | 53,136 | $1.10M | 0.05% | +4,866+10.1% | Added |
| Jane Street Group, LLC | 46,709 | $970.1K | 0.00% | +6,041+14.9% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 43,508 | $903.7K | 0.01% | −29,539−40.4% | Reduced |
| Algert Global LLC | 42,643 | $885.7K | 0.04% | +9,270+27.8% | Added |
| Beacon Investment Advisory Services, Inc. | 41,961 | $871.5K | 0.04% | −779−1.8% | Reduced |
| SEI Investments Co | 40,904 | $849.6K | 0.00% | +20,258+98.1% | Added |
| Formula Growth Ltd | 40,746 | $846.3K | 0.29% | +17,000+71.6% | Added |
| State of Alaska, Department of Revenue | 40,519 | $841.0K | 0.01% | −2,001−4.7% | Reduced |
| Raymond James & Associates | 40,264 | $836.3K | 0.00% | +737+1.9% | Added |