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 |
|---|---|---|---|---|---|
| Oregon Public Employees Retirement Fund | 21,096 | $2.52M | 0.03% | +21,096 | New |
| Treasurer of the State of North Carolina | 21,979 | $2.62M | 0.02% | +739+3.5% | Added |
| Raymond James Financial Services Advisors, Inc. | 22,468 | $2.68M | 0.01% | +14,352+176.8% | Added |
| HighMark Wealth Management LLC | 23,618 | $2.82M | 2.08% | +15+0.1% | Added |
| Bank of Montreal | 23,926 | $2.89M | 0.00% | +4,758+24.8% | Added |
| Stifel Financial Corp | 24,206 | $2.89M | 0.00% | +1,827+8.2% | Added |
| First Trust Advisors LP | 24,452 | $2.92M | 0.00% | +24,452 | New |
| Crown Advisors Management, Inc. | 25,000 | $2.98M | 2.10% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 28,370 | $3.39M | 0.04% | +5,481+23.9% | Added |
| Mirabella Financial Services LLP | 28,861 | $3.45M | 0.45% | +7,008+32.1% | Added |
| LPL Financial LLC | 28,964 | $3.46M | 0.00% | +9,385+47.9% | Added |
| Prudential Financial Inc | 29,362 | $3.52M | 0.00% | −4,134−12.3% | Reduced |
| SG Americas Securities, LLC | 29,636 | $3.54M | 0.02% | −28,897−49.4% | Reduced |
| Great West Life Assurance Co | 29,605 | $3.56M | 0.01% | +26,151+757.1% | Added |
| State of Tennessee, Treasury Department | 30,000 | $3.58M | 0.01% | +30,000 | New |
| MetLife Investment Management | 30,280 | $3.61M | 0.03% | +30,280 | New |
| Comerica Bank | 28,557 | $3.63M | 0.02% | +28,557 | New |
| Spouting Rock Asset Management, LLC | 30,686 | $3.66M | 1.83% | +2,050+7.2% | Added |
| Cinctive Capital Management LP | 30,773 | $3.67M | 0.20% | −51,358−62.5% | Reduced |
| Castleark Management LLC | 30,990 | $3.70M | 0.14% | +30,990 | New |
| CastleArk Alternatives, LLC | 30,990 | $3.70M | 0.14% | +30,990 | New |
| Kennedy Capital Management, Inc. | 32,079 | $3.83M | 0.09% | −24,859−43.7% | Reduced |
| Royal Bank of Canada | 32,198 | $3.84M | 0.00% | −4,172−11.5% | Reduced |
| Candriam Luxembourg S.C.A. | 35,587 | $4.25M | 0.03% | −38,000−51.6% | Reduced |
| Capital International Ltd | 36,329 | $4.34M | 0.24% | −361−1.0% | Reduced |
| Algert Global LLC | 36,418 | $4.35M | 0.58% | +2,338+6.9% | Added |
| Public Employees Retirement System of Ohio | 36,650 | $4.38M | 0.02% | −769−2.1% | Reduced |
| State of New Jersey Common Pension Fund D | 37,776 | $4.51M | 0.01% | −599−1.6% | Reduced |
| ExodusPoint Capital Management, LP | 42,958 | $5.13M | 0.08% | −27,154−38.7% | Reduced |
| Capital International Inc | 44,568 | $5.32M | 0.05% | −3,579−7.4% | Reduced |
| Amalgamated Bank | 44,570 | $5.32M | 0.04% | +32,848+280.2% | Added |
| Assenagon Asset Management S.A. | 44,636 | $5.33M | 0.02% | −355,116−88.8% | Reduced |
| Twin Tree Management, LP | 45,173 | $5.39M | 0.16% | +567+1.3% | Added |
| First Republic Investment Management, Inc. | 45,308 | $5.41M | 0.01% | −4,443−8.9% | Reduced |
| Texas Permanent School Fund | 46,625 | $5.57M | 0.07% | +46,625 | New |
| PDT Partners, LLC | 51,003 | $6.09M | 0.44% | −8,200−13.9% | Reduced |
| Lisanti Capital Growth, LLC | 52,900 | $6.32M | 0.93% | +11,580+28.0% | Added |
| Susquehanna Fundamental Investments, LLC | 54,081 | $6.46M | 0.12% | +42,038+349.1% | Added |
| Citigroup Inc | 54,397 | $6.49M | 0.01% | −34,147−38.6% | Reduced |
| Formula Growth Ltd | 55,985 | $6.68M | 0.97% | −9,000−13.8% | Reduced |
| Schroder Investment Management Group | 56,907 | $6.79M | 0.01% | +4,100+7.8% | Added |
| Bridgewater Associates, LP | 57,608 | $6.88M | 0.04% | −4,997−8.0% | Reduced |
| Pier Capital, LLC | 60,422 | $7.21M | 0.75% | −1,191−1.9% | Reduced |
| 1832 Asset Management L.P. | 60,000 | $7.24M | 0.01% | +60,000 | New |
| KBC Group NV | 61,157 | $7.30M | 0.03% | +61,157 | New |
| State of Wisconsin Investment Board | 64,335 | $7.68M | 0.02% | +359+0.6% | Added |
| Frontier Capital Management Co LLC | 67,726 | $8.09M | 0.06% | −1,829−2.6% | Reduced |
| Intrinsic Edge Capital Management LLC | 67,942 | $8.11M | 0.56% | −133,593−66.3% | Reduced |
| Next Century Growth Investors LLC | 70,827 | $8.46M | 0.73% | −9,030−11.3% | Reduced |
| Manufacturers Life Insurance Company, The | 72,529 | $8.66M | 0.01% | +72,529 | New |
| State Board of Administration of Florida Retirement System | 74,195 | $8.86M | 0.02% | −1,199−1.6% | Reduced |
| Essex Investment Management Co LLC | 74,588 | $8.90M | 1.09% | +50,256+206.5% | Added |
| Mutual of America Capital Management LLC | 75,931 | $9.06M | 0.09% | +55,294+267.9% | Added |
| Cubist Systematic Strategies, LLC | 80,642 | $9.63M | 0.12% | +5,204+6.9% | Added |
| Retirement Systems of Alabama | 81,609 | $9.74M | 0.04% | +81,609 | New |
| Squarepoint Ops LLC | 82,406 | $9.84M | 0.07% | +62,315+310.2% | Added |
| Osterweis Capital Management Inc | 85,685 | $10.2M | 0.56% | −38,500−31.0% | Reduced |
| Silvercrest Asset Management Group LLC | 90,128 | $10.8M | 0.07% | −1,355−1.5% | Reduced |
| Parametric Portfolio Associates LLC | 91,836 | $11.0M | 0.01% | +39,213+74.5% | Added |
| UBS Asset Management Americas Inc | 94,787 | $11.3M | 0.00% | +1,595+1.7% | Added |
| Skandinaviska Enskilda Banken AB (publ) | 96,073 | $11.5M | 0.06% | 00.0% | Unchanged |
| Legal & General Group Plc | 97,086 | $11.6M | 0.00% | +50,787+109.7% | Added |
| Alliancebernstein L.P. | 97,406 | $11.6M | 0.00% | +66,510+215.3% | Added |
| British Columbia Investment Management Corp | 100,000 | $11.9M | 0.07% | −25,920−20.6% | Reduced |
| Dimensional Fund Advisors LP | 102,070 | $12.2M | 0.00% | −35,191−25.6% | Reduced |
| WCM Investment Management, LLC | 103,727 | $12.4M | 0.03% | +1,101+1.1% | Added |
| California State Teachers Retirement System | 104,532 | $12.5M | 0.02% | −1,537−1.4% | Reduced |
| American International Group, Inc. | 109,016 | $13.0M | 0.07% | +107,758+8,565.8% | Added |
| Bank of America Corp | 109,762 | $13.1M | 0.00% | +3,991+3.8% | Added |
| Kingdon Capital Management, L.L.C. | 111,000 | $13.3M | 2.32% | +111,000 | New |
| Allianz Asset Management GmbH | 118,993 | $14.2M | 0.01% | −25,017−17.4% | Reduced |
| California Public Employees Retirement System | 124,045 | $14.8M | 0.01% | +30.0% | Added |
| Barclays PLC | 126,333 | $15.1M | 0.01% | +6,056+5.0% | Added |
| Swiss National Bank | 138,400 | $16.5M | 0.01% | +600+0.4% | Added |
| CIBC Private Wealth Group, LLC | 139,811 | $16.7M | 0.04% | +139,811 | New |
| Deutsche Bank AG | 146,330 | $17.5M | 0.01% | +21,659+17.4% | Added |
| JPMorgan Chase & Co | 148,743 | $17.8M | 0.00% | +26,015+21.2% | Added |
| Fred Alger Management, LLC | 154,234 | $18.4M | 0.04% | −18,658−10.8% | Reduced |
| Redwood Investments, LLC | 158,999 | $19.0M | 1.59% | +31,688+24.9% | Added |
| Rhumbline Advisers | 160,942 | $19.2M | 0.03% | +101,708+171.7% | Added |
| Victory Capital Management Inc | 164,199 | $19.6M | 0.02% | +28,941+21.4% | Added |
| Millennium Management LLC | 169,462 | $20.2M | 0.03% | −132,950−44.0% | Reduced |
| Nicholas Company, Inc. | 170,763 | $20.4M | 0.36% | +16,735+10.9% | Added |
| Ameriprise Financial Inc | 171,132 | $20.4M | 0.01% | +87,048+103.5% | Added |
| Wells Fargo & Company | 175,893 | $21.0M | 0.00% | +935+0.5% | Added |
| Nomura Holdings Inc | 187,401 | $22.7M | 0.17% | −2,788−1.5% | Reduced |
| American Century Companies Inc | 216,215 | $25.8M | 0.02% | −137,830−38.9% | Reduced |
| Citadel Advisors LLC | 223,116 | $26.6M | 0.03% | −174,268−43.9% | Reduced |
| Principal Financial Group Inc | 231,830 | $27.7M | 0.02% | +210,623+993.2% | Added |
| Renaissance Technologies LLC | 239,546 | $28.6M | 0.04% | +205,119+595.8% | Added |
| Man Group plc | 250,946 | $30.0M | 0.11% | −29,621−10.6% | Reduced |
| New York State Common Retirement Fund | 253,954 | $30.3M | 0.03% | +2,969+1.2% | Added |
| Lombard Odier Asset Management (Switzerland) SA | 256,856 | $30.7M | 1.90% | −52,591−17.0% | Reduced |
| UBS Group AG | 285,060 | $34.0M | 0.01% | +12,434+4.6% | Added |
| AXA S.A. | 286,987 | $34.3M | 0.10% | +63,600+28.5% | Added |
| Pictet Asset Management SA | 288,410 | $34.4M | 0.04% | +288,410 | New |
| Mirae Asset Global Investments Co., Ltd. | 303,811 | $36.3M | 0.09% | −56,209−15.6% | Reduced |
| Morgan Stanley | 309,858 | $37.0M | 0.00% | +27,031+9.6% | Added |
| Nuveen Asset Management, LLC | 325,631 | $38.9M | 0.01% | −72,327−18.2% | Reduced |
| Westfield Capital Management Co LP | 331,027 | $39.5M | 0.24% | −64,954−16.4% | Reduced |