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 2021
Institutional positions in Tandem Diabetes Care Inc as of Sep 30, 2021. 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
- 338
- +41 vs. Q2 2021
- Shares held
- 61.3M
- +2.48M (+4.2%) vs. Q2 2021
- Total value
- $7.32B
- +$1.59B (+27.8%) vs. Q2 2021
- New holders
- 80
- 106 more added
- Sold out
- 39
- 106 more reduced
6 institutions that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2021: 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 2021
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Vanguard Group Inc | 6,051,059 | $722.4M | 0.02% | +446,554+8.0% | Added |
| FMR LLC | 5,846,900 | $698.0M | 0.06% | −147,745−2.5% | Reduced |
| BlackRock Inc. | 5,806,634 | $693.2M | 0.02% | +2,283,672+64.8% | Added |
| Jackson Square Partners, LLC | 3,571,638 | $426.4M | 2.70% | −51,456−1.4% | Reduced |
| Capital World Investors | 3,293,996 | $393.2M | 0.07% | +17,292+0.5% | Added |
| Invesco Ltd. | 1,737,518 | $207.4M | 0.05% | +134,364+8.4% | Added |
| State Street Corp | 1,612,427 | $192.5M | 0.01% | +422,287+35.5% | Added |
| Champlain Investment Partners, LLC | 1,493,838 | $178.3M | 0.85% | −52,732−3.4% | Reduced |
| Brown Capital Management LLC | 1,223,766 | $146.1M | 1.20% | −2,350−0.2% | Reduced |
| RTW Investments, LP | 1,160,734 | $138.6M | 2.09% | +13,326+1.2% | Added |
| Federated Hermes, Inc. | 1,158,738 | $138.3M | 0.26% | −115,090−9.0% | Reduced |
| Credit Suisse AG | 1,037,546 | $123.9M | 0.10% | −644,831−38.3% | Reduced |
| Bellevue Group AG | 1,034,519 | $123.5M | 1.25% | +14,151+1.4% | Added |
| Delphi Management Partners VIII, L.L.C. | 1,000,000 | $119.4M | 86.22% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 982,746 | $117.3M | 0.03% | +367,990+59.9% | Added |
| Macquarie Group Ltd | 950,380 | $113.5M | 0.10% | +6,847+0.7% | Added |
| Janus Henderson Group PLC | 846,918 | $101.1M | 0.04% | +15,756+1.9% | Added |
| Stephens Investment Management Group LLC | 820,346 | $97.9M | 1.33% | +41,424+5.3% | Added |
| Geode Capital Management, LLC | 801,055 | $95.6M | 0.01% | +11,050+1.4% | Added |
| Gilder Gagnon Howe & Co LLC | 781,006 | $93.2M | 0.48% | −9,561−1.2% | Reduced |
| SEI Investments Co | 712,465 | $85.1M | 0.18% | −4,976−0.7% | Reduced |
| Price T Rowe Associates Inc | 650,305 | $77.6M | 0.01% | −131,038−16.8% | Reduced |
| Norges Bank | 586,150 | $70.0M | 0.02% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 580,695 | $69.3M | 0.01% | +337,838+139.1% | Added |
| Jennison Associates LLC | 560,883 | $67.0M | 0.04% | +27,914+5.2% | Added |
| Northern Trust Corp | 489,555 | $58.4M | 0.01% | +196,716+67.2% | Added |
| Consonance Capital Management LP | 487,327 | $58.2M | 31.84% | −491,899−50.2% | Reduced |
| First Light Asset Management, LLC | 479,186 | $57.2M | 3.77% | −49,420−9.3% | Reduced |
| Charles Schwab Investment Management Inc | 477,463 | $57.0M | 0.02% | +13,373+2.9% | Added |
| Wellington Management Group LLP | 458,639 | $54.8M | 0.01% | −102,438−18.3% | Reduced |
| Chicago Capital, LLC | 453,273 | $54.1M | 2.05% | −4,188−0.9% | Reduced |
| Voya Investment Management LLC | 449,789 | $53.7M | 0.11% | −12,870−2.8% | Reduced |
| Eaton Vance Management | 439,030 | $52.4M | 0.07% | −88,553−16.8% | Reduced |
| TimesSquare Capital Management, LLC | 430,345 | $51.4M | 0.45% | −167,855−28.1% | Reduced |
| Amundi | 403,562 | $48.2M | 0.03% | −73,952−15.5% | Reduced |
| Wasatch Advisors Inc | 392,301 | $46.8M | 0.19% | +26,518+7.2% | Added |
| Point72 Asset Management, L.P. | 356,667 | $42.6M | 0.20% | −321,660−47.4% | Reduced |
| Baillie Gifford & Co | 347,052 | $41.4M | 0.02% | +1270.0% | Added |
| Westfield Capital Management Co LP | 331,027 | $39.5M | 0.24% | −64,954−16.4% | Reduced |
| Nuveen Asset Management, LLC | 325,631 | $38.9M | 0.01% | −72,327−18.2% | Reduced |
| Morgan Stanley | 309,858 | $37.0M | 0.00% | +27,031+9.6% | Added |
| Mirae Asset Global Investments Co., Ltd. | 303,811 | $36.3M | 0.09% | −56,209−15.6% | Reduced |
| Pictet Asset Management SA | 288,410 | $34.4M | 0.04% | +288,410 | New |
| AXA S.A. | 286,987 | $34.3M | 0.10% | +63,600+28.5% | Added |
| UBS Group AG | 285,060 | $34.0M | 0.01% | +12,434+4.6% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 256,856 | $30.7M | 1.90% | −52,591−17.0% | Reduced |
| New York State Common Retirement Fund | 253,954 | $30.3M | 0.03% | +2,969+1.2% | Added |
| Man Group plc | 250,946 | $30.0M | 0.11% | −29,621−10.6% | Reduced |
| Renaissance Technologies LLC | 239,546 | $28.6M | 0.04% | +205,119+595.8% | Added |
| Principal Financial Group Inc | 231,830 | $27.7M | 0.02% | +210,623+993.2% | Added |
| Citadel Advisors LLC | 223,116 | $26.6M | 0.03% | −174,268−43.9% | Reduced |
| American Century Companies Inc | 216,215 | $25.8M | 0.02% | −137,830−38.9% | Reduced |
| Nomura Holdings Inc | 187,401 | $22.7M | 0.17% | −2,788−1.5% | Reduced |
| Wells Fargo & Company | 175,893 | $21.0M | 0.00% | +935+0.5% | Added |
| Ameriprise Financial Inc | 171,132 | $20.4M | 0.01% | +87,048+103.5% | Added |
| Nicholas Company, Inc. | 170,763 | $20.4M | 0.36% | +16,735+10.9% | Added |
| Millennium Management LLC | 169,462 | $20.2M | 0.03% | −132,950−44.0% | Reduced |
| Victory Capital Management Inc | 164,199 | $19.6M | 0.02% | +28,941+21.4% | Added |
| Rhumbline Advisers | 160,942 | $19.2M | 0.03% | +101,708+171.7% | Added |
| Redwood Investments, LLC | 158,999 | $19.0M | 1.59% | +31,688+24.9% | Added |
| Fred Alger Management, LLC | 154,234 | $18.4M | 0.04% | −18,658−10.8% | Reduced |
| JPMorgan Chase & Co | 148,743 | $17.8M | 0.00% | +26,015+21.2% | Added |
| Deutsche Bank AG | 146,330 | $17.5M | 0.01% | +21,659+17.4% | Added |
| CIBC Private Wealth Group, LLC | 139,811 | $16.7M | 0.04% | +139,811 | New |
| Swiss National Bank | 138,400 | $16.5M | 0.01% | +600+0.4% | Added |
| Barclays PLC | 126,333 | $15.1M | 0.01% | +6,056+5.0% | Added |
| California Public Employees Retirement System | 124,045 | $14.8M | 0.01% | +30.0% | Added |
| Allianz Asset Management GmbH | 118,993 | $14.2M | 0.01% | −25,017−17.4% | Reduced |
| Kingdon Capital Management, L.L.C. | 111,000 | $13.3M | 2.32% | +111,000 | New |
| Bank of America Corp | 109,762 | $13.1M | 0.00% | +3,991+3.8% | Added |
| American International Group, Inc. | 109,016 | $13.0M | 0.07% | +107,758+8,565.8% | Added |
| California State Teachers Retirement System | 104,532 | $12.5M | 0.02% | −1,537−1.4% | Reduced |
| WCM Investment Management, LLC | 103,727 | $12.4M | 0.03% | +1,101+1.1% | Added |
| Dimensional Fund Advisors LP | 102,070 | $12.2M | 0.00% | −35,191−25.6% | Reduced |
| British Columbia Investment Management Corp | 100,000 | $11.9M | 0.07% | −25,920−20.6% | Reduced |
| Alliancebernstein L.P. | 97,406 | $11.6M | 0.00% | +66,510+215.3% | Added |
| Legal & General Group Plc | 97,086 | $11.6M | 0.00% | +50,787+109.7% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 96,073 | $11.5M | 0.06% | 00.0% | Unchanged |
| UBS Asset Management Americas Inc | 94,787 | $11.3M | 0.00% | +1,595+1.7% | Added |
| Parametric Portfolio Associates LLC | 91,836 | $11.0M | 0.01% | +39,213+74.5% | Added |
| Silvercrest Asset Management Group LLC | 90,128 | $10.8M | 0.07% | −1,355−1.5% | Reduced |
| Osterweis Capital Management Inc | 85,685 | $10.2M | 0.56% | −38,500−31.0% | Reduced |
| Squarepoint Ops LLC | 82,406 | $9.84M | 0.07% | +62,315+310.2% | Added |
| Retirement Systems of Alabama | 81,609 | $9.74M | 0.04% | +81,609 | New |
| Cubist Systematic Strategies, LLC | 80,642 | $9.63M | 0.12% | +5,204+6.9% | Added |
| Mutual of America Capital Management LLC | 75,931 | $9.06M | 0.09% | +55,294+267.9% | Added |
| Essex Investment Management Co LLC | 74,588 | $8.90M | 1.09% | +50,256+206.5% | Added |
| State Board of Administration of Florida Retirement System | 74,195 | $8.86M | 0.02% | −1,199−1.6% | Reduced |
| Manufacturers Life Insurance Company, The | 72,529 | $8.66M | 0.01% | +72,529 | New |
| Next Century Growth Investors LLC | 70,827 | $8.46M | 0.73% | −9,030−11.3% | Reduced |
| Intrinsic Edge Capital Management LLC | 67,942 | $8.11M | 0.56% | −133,593−66.3% | Reduced |
| Frontier Capital Management Co LLC | 67,726 | $8.09M | 0.06% | −1,829−2.6% | Reduced |
| State of Wisconsin Investment Board | 64,335 | $7.68M | 0.02% | +359+0.6% | Added |
| KBC Group NV | 61,157 | $7.30M | 0.03% | +61,157 | New |
| 1832 Asset Management L.P. | 60,000 | $7.24M | 0.01% | +60,000 | New |
| Pier Capital, LLC | 60,422 | $7.21M | 0.75% | −1,191−1.9% | Reduced |
| Bridgewater Associates, LP | 57,608 | $6.88M | 0.04% | −4,997−8.0% | Reduced |
| Schroder Investment Management Group | 56,907 | $6.79M | 0.01% | +4,100+7.8% | Added |
| Formula Growth Ltd | 55,985 | $6.68M | 0.97% | −9,000−13.8% | Reduced |
| Citigroup Inc | 54,397 | $6.49M | 0.01% | −34,147−38.6% | Reduced |