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 |
|---|---|---|---|---|---|
| Ensign Peak Advisors, Inc | 22,620 | $469.8K | 0.00% | 00.0% | Unchanged |
| M&T Bank Corp | 22,706 | $471.5K | 0.00% | +22,706 | New |
| LPL Financial LLC | 22,908 | $476.0K | 0.00% | −2,079−8.3% | Reduced |
| BNP Paribas Arbitrage, SA | 23,028 | $478.3K | 0.00% | −4,039−14.9% | Reduced |
| SG Americas Securities, LLC | 23,510 | $488.0K | 0.01% | +9,751+70.9% | Added |
| Virginia Retirement Systems Et Al | 23,600 | $490.2K | 0.00% | +4,400+22.9% | Added |
| XTX Topco Ltd | 25,521 | $530.1K | 0.09% | −16,518−39.3% | Reduced |
| Public Employees Retirement System of Ohio | 26,243 | $545.0K | 0.00% | −2,906−10.0% | Reduced |
| Capital International Inc | 26,693 | $554.4K | 0.01% | +3,065+13.0% | Added |
| HighMark Wealth Management LLC | 27,170 | $564.3K | 0.47% | +2,870+11.8% | Added |
| Treasurer of the State of North Carolina | 28,293 | $588.0K | 0.00% | +140+0.5% | Added |
| Maryland State Retirement & Pension System | 28,770 | $597.6K | 0.01% | −1,207−4.0% | Reduced |
| Amalgamated Bank | 29,194 | $606.0K | 0.01% | −709−2.4% | Reduced |
| Citigroup Inc | 29,733 | $617.6K | 0.00% | −2,759−8.5% | Reduced |
| Comerica Bank | 29,844 | $619.9K | 0.00% | +29,844 | New |
| Royal Bank of Canada | 30,725 | $637.0K | 0.00% | −13,314−30.2% | Reduced |
| Weiss Multi-Strategy Advisers LLC | 30,770 | $639.0K | 0.02% | −83,112−73.0% | Reduced |
| Yousif Capital Management, LLC | 32,498 | $675.0K | 0.01% | −2,190−6.3% | Reduced |
| Two Sigma Securities, LLC | 32,765 | $680.5K | 0.03% | +32,765 | New |
| UBS Group AG | 32,814 | $681.5K | 0.00% | −97,783−74.9% | Reduced |
| Harbor Capital Advisors, Inc. | 32,974 | $684.9K | 0.15% | +53+0.2% | Added |
| Louisiana State Employees Retirement System | 33,100 | $687.5K | 0.02% | −800−2.4% | Reduced |
| Spouting Rock Asset Management, LLC | 34,832 | $723.5K | 0.23% | +2,331+7.2% | Added |
| Price T Rowe Associates Inc | 34,816 | $724.0K | 0.00% | +2,787+8.7% | Added |
| Nomura Holdings Inc | 37,230 | $773.3K | 0.01% | −31,853−46.1% | Reduced |
| State of Tennessee, Treasury Department | 38,541 | $800.5K | 0.00% | −5,083−11.7% | Reduced |
| Raymond James & Associates | 40,264 | $836.3K | 0.00% | +737+1.9% | Added |
| State of Alaska, Department of Revenue | 40,519 | $841.0K | 0.01% | −2,001−4.7% | Reduced |
| Formula Growth Ltd | 40,746 | $846.3K | 0.29% | +17,000+71.6% | Added |
| SEI Investments Co | 40,904 | $849.6K | 0.00% | +20,258+98.1% | Added |
| Beacon Investment Advisory Services, Inc. | 41,961 | $871.5K | 0.04% | −779−1.8% | Reduced |
| Algert Global LLC | 42,643 | $885.7K | 0.04% | +9,270+27.8% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 43,508 | $903.7K | 0.01% | −29,539−40.4% | Reduced |
| Jane Street Group, LLC | 46,709 | $970.1K | 0.00% | +6,041+14.9% | Added |
| Capital International Sarl | 53,136 | $1.10M | 0.05% | +4,866+10.1% | Added |
| Millrace Asset Group, Inc. | 54,706 | $1.14M | 1.40% | +54,706 | New |
| Texas Permanent School Fund | 55,034 | $1.14M | 0.01% | −1,706−3.0% | Reduced |
| AXA S.A. | 56,156 | $1.17M | 0.00% | −185,584−76.8% | Reduced |
| Capital International Ltd | 56,989 | $1.18M | 0.07% | −1,048−1.8% | Reduced |
| Wells Fargo & Company | 57,284 | $1.19M | 0.00% | −13,609−19.2% | Reduced |
| Macquarie Group Ltd | 57,969 | $1.20M | 0.00% | +16,135+38.6% | Added |
| Dark Forest Capital Management LP | 58,710 | $1.22M | 0.10% | +41,769+246.6% | Added |
| Thrivent Financial for Lutherans | 59,533 | $1.24M | 0.00% | −2,286−3.7% | Reduced |
| ExodusPoint Capital Management, LP | 62,133 | $1.29M | 0.02% | −73,229−54.1% | Reduced |
| Trexquant Investment LP | 62,323 | $1.29M | 0.03% | +62,323 | New |
| State Board of Administration of Florida Retirement System | 65,477 | $1.36M | 0.00% | +100+0.2% | Added |
| New York State Teachers Retirement System | 70,000 | $1.45M | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 71,440 | $1.48M | 0.00% | −7,031−9.0% | Reduced |
| Bridgewater Associates, LP | 77,559 | $1.61M | 0.01% | +8,010+11.5% | Added |
| Great West Life Assurance Co | 79,407 | $1.65M | 0.00% | +690+0.9% | Added |
| Public Sector Pension Investment Board | 80,436 | $1.67M | 0.01% | −34,269−29.9% | Reduced |
| Goldman Sachs Group Inc | 80,815 | $1.68M | 0.00% | −3,017−3.6% | Reduced |
| Barclays PLC | 84,140 | $1.75M | 0.00% | +18,025+27.3% | Added |
| State of Wisconsin Investment Board | 84,615 | $1.76M | 0.01% | −2,981−3.4% | Reduced |
| Credit Suisse AG | 85,682 | $1.78M | 0.00% | −2,480−2.8% | Reduced |
| State of New Jersey Common Pension Fund D | 87,632 | $1.82M | 0.01% | −4,551−4.9% | Reduced |
| Bank of America Corp | 90,184 | $1.87M | 0.00% | +5,049+5.9% | Added |
| California Public Employees Retirement System | 91,206 | $1.89M | 0.00% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 95,147 | $1.98M | 0.00% | +3,194+3.5% | Added |
| Victory Capital Management Inc | 98,740 | $2.05M | 0.00% | +1,130+1.2% | Added |
| Granahan Investment Management Inc | 98,924 | $2.05M | 0.07% | +10,124+11.4% | Added |
| Rice Hall James & Associates, LLC | 107,376 | $2.23M | 0.14% | +107,376 | New |
| Cubist Systematic Strategies, LLC | 108,056 | $2.24M | 0.03% | −273,106−71.7% | Reduced |
| Banque Pictet & Cie SA | 110,519 | $2.30M | 0.03% | +110,519 | New |
| Skandinaviska Enskilda Banken AB (publ) | 118,221 | $2.46M | 0.02% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 125,341 | $2.60M | 0.01% | −133,742−51.6% | Reduced |
| KBC Group NV | 129,314 | $2.69M | 0.01% | +61,940+91.9% | Added |
| Prudential Financial Inc | 129,724 | $2.70M | 0.00% | +52,540+68.1% | Added |
| Integral Health Asset Management, LLC | 130,000 | $2.70M | 0.38% | +130,000 | New |
| Dimensional Fund Advisors LP | 135,009 | $2.80M | 0.00% | −159,503−54.2% | Reduced |
| Russell Investments Group, Ltd. | 137,820 | $2.86M | 0.01% | +36,401+35.9% | Added |
| Swiss National Bank | 142,000 | $2.95M | 0.00% | +1,400+1.0% | Added |
| Frontier Capital Management Co LLC | 145,840 | $3.03M | 0.03% | −1,453−1.0% | Reduced |
| Squarepoint Ops LLC | 153,207 | $3.18M | 0.02% | −16,673−9.8% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 154,315 | $3.21M | 0.01% | −9,497−5.8% | Reduced |
| Nuveen Asset Management, LLC | 156,148 | $3.24M | 0.00% | −29,301−15.8% | Reduced |
| JPMorgan Chase & Co | 159,418 | $3.31M | 0.00% | −41,233−20.5% | Reduced |
| Norges Bank | 163,273 | $3.39M | 0.00% | −404,105−71.2% | Reduced |
| Rhumbline Advisers | 173,256 | $3.60M | 0.00% | −2,130−1.2% | Reduced |
| Marshall Wace, LLP | 179,040 | $3.72M | 0.01% | −478,121−72.8% | Reduced |
| Legal & General Group Plc | 182,742 | $3.80M | 0.00% | −584−0.3% | Reduced |
| Jump Financial, LLC | 204,230 | $4.24M | 0.16% | +41,060+25.2% | Added |
| Tudor Investment Corp Et Al | 215,382 | $4.47M | 0.07% | +8,292+4.0% | Added |
| DAFNA Capital Management LLC | 220,708 | $4.58M | 1.43% | +110,708+100.6% | Added |
| Alberta Investment Management Corp | 241,578 | $5.02M | 0.05% | +52,329+27.7% | Added |
| Peregrine Capital Management LLC | 243,355 | $5.05M | 0.15% | +52,897+27.8% | Added |
| D. E. Shaw & Co., Inc. | 250,944 | $5.21M | 0.01% | −351,116−58.3% | Reduced |
| Silvercrest Asset Management Group LLC | 255,072 | $5.30M | 0.04% | +63,373+33.1% | Added |
| Baillie Gifford & Co | 262,756 | $5.46M | 0.00% | 00.0% | Unchanged |
| Invenomic Capital Management LP | 272,444 | $5.66M | 0.24% | +190,273+231.6% | Added |
| Ameriprise Financial Inc | 272,879 | $5.66M | 0.00% | −12,072−4.2% | Reduced |
| Invesco Ltd. | 273,834 | $5.69M | 0.00% | −22,508−7.6% | Reduced |
| New York State Common Retirement Fund | 316,186 | $6.57M | 0.01% | −18,839−5.6% | Reduced |
| Fred Alger Management, LLC | 325,689 | $6.76M | 0.04% | +110,049+51.0% | Added |
| Susquehanna International Group, LLP | 346,390 | $7.19M | 0.01% | +36,555+11.8% | Added |
| Coronation Fund Managers Ltd. | 354,904 | $7.37M | 0.22% | +147,058+70.8% | Added |
| Principal Financial Group Inc | 355,152 | $7.38M | 0.01% | −18,749−5.0% | Reduced |
| Alliancebernstein L.P. | 365,132 | $7.58M | 0.00% | +191,348+110.1% | Added |
| Charles Schwab Investment Management Inc | 367,011 | $7.62M | 0.00% | +16,586+4.7% | Added |
| Northern Trust Corp | 376,889 | $7.83M | 0.00% | +8,012+2.2% | Added |