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 |
|---|---|---|---|---|---|
| Glassman Wealth Services | 4 | $0 | 0.00% | +2+100.0% | Added |
| Versant Capital Management, Inc | 4 | $0 | 0.00% | 00.0% | Unchanged |
| Ci Investments Inc. | 3 | $0 | 0.00% | +3 | New |
| Evermay Wealth Management LLC | 9 | $1.00K | 0.00% | 00.0% | Unchanged |
| NEXT Financial Group, Inc | 7 | $1.00K | 0.00% | 00.0% | Unchanged |
| Sterling Investment Advisors, Ltd. | 7 | $1.00K | 0.00% | 00.0% | Unchanged |
| Huntington National Bank | 11 | $1.00K | 0.00% | +11 | New |
| Gerber Kawasaki Wealth & Investment Management | 14 | $1.00K | 0.00% | +14 | New |
| Meridian Wealth Partners, LLC | 7 | $1.00K | 0.00% | +7 | New |
| BerganKDV Wealth Management, LLC | 14 | $2.00K | 0.00% | 00.0% | Unchanged |
| Geneos Wealth Management Inc. | 20 | $2.00K | 0.00% | 00.0% | Unchanged |
| Meeder Asset Management Inc | 18 | $2.00K | 0.00% | +18 | New |
| Liberty Wealth Management LLC | 35 | $4.00K | 0.00% | +35 | New |
| Focused Wealth Management, Inc | 40 | $5.00K | 0.00% | 00.0% | Unchanged |
| Wagner Wealth Management, LLC | 35 | $5.00K | 0.00% | 00.0% | Unchanged |
| Bell Investment Advisors, Inc | 42 | $5.00K | 0.00% | +42 | New |
| Evolution Wealth Advisors, LLC | 52 | $6.00K | 0.00% | −78−60.0% | Reduced |
| Stonebridge Financial Planning Group, LLC | 48 | $7.00K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 56 | $7.00K | 0.00% | +56 | New |
| Ellevest, Inc. | 61 | $7.00K | 0.00% | +61 | New |
| TD Private Client Wealth LLC | 66 | $7.88K | 0.00% | 00.0% | Unchanged |
| Parkside Financial Bank & Trust | 74 | $9.00K | 0.00% | +4+5.7% | Added |
| Montag A & Associates Inc | 80 | $10.0K | 0.00% | 00.0% | Unchanged |
| Front Row Advisors LLC | 100 | $12.0K | 0.01% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 103 | $12.0K | 0.00% | +5+5.1% | Added |
| Rockefeller Capital Management L.P. | 102 | $12.0K | 0.00% | +2+2.0% | Added |
| Sandy Spring Bank | 100 | $12.0K | 0.00% | +100 | New |
| Jacobi Capital Management LLC | 100 | $12.0K | 0.00% | +100 | New |
| First Horizon Advisors, Inc. | 111 | $13.0K | 0.00% | +29+35.4% | Added |
| Neo Ivy Capital Management | 142 | $14.0K | 0.02% | +142 | New |
| Ellis Investment Partners, LLC | 130 | $15.0K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 150 | $18.0K | 0.00% | 00.0% | Unchanged |
| American Portfolios Advisors | 159 | $19.0K | 0.00% | −30−15.9% | Reduced |
| TCI Wealth Advisors, Inc. | 183 | $22.0K | 0.00% | +4+2.2% | Added |
| Creative Financial Designs Inc | 193 | $23.0K | 0.00% | 00.0% | Unchanged |
| Kistler-Tiffany Companies, LLC | 245 | $29.0K | 0.01% | 00.0% | Unchanged |
| Patriot Financial Group Insurance Agency, LLC | 242 | $29.0K | 0.01% | 00.0% | Unchanged |
| Stephens Inc | 241 | $29.0K | 0.00% | +174+259.7% | Added |
| Berman Capital Advisors, LLC | 306 | $36.0K | 0.01% | +136+80.0% | Added |
| Steward Partners Investment Advisory, LLC | 320 | $38.0K | 0.00% | −100−23.8% | Reduced |
| Toth Financial Advisory Corp | 325 | $39.0K | 0.01% | +100+44.4% | Added |
| IFP Advisors, Inc | 361 | $43.0K | 0.00% | −200−35.7% | Reduced |
| Altshuler Shaham Ltd | 439 | $53.0K | 0.00% | +439 | New |
| Banque Cantonale Vaudoise | 642 | $77.0K | 0.00% | −2,115−76.7% | Reduced |
| Cahill Financial Advisors Inc | 651 | $78.0K | 0.02% | +651 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 709 | $85.0K | 0.00% | −37,992−98.2% | Reduced |
| FinTrust Capital Advisors, LLC | 755 | $90.0K | 0.02% | +20+2.7% | Added |
| Harbour Investments, Inc. | 768 | $92.0K | 0.00% | −485−38.7% | Reduced |
| O'Shaughnessy Asset Management, LLC | 769 | $92.0K | 0.00% | +254+49.3% | Added |
| Lazard Asset Management LLC | 891 | $106.0K | 0.00% | −32−3.5% | Reduced |
| Salem Investment Counselors Inc | 1,000 | $119.0K | 0.01% | 00.0% | Unchanged |
| FourThought Financial, LLC | 1,000 | $119.0K | 0.02% | 00.0% | Unchanged |
| GPS Wealth Strategies Group, LLC | 1,098 | $131.0K | 0.03% | −9−0.8% | Reduced |
| Arkadios Wealth Advisors | 1,131 | $135.0K | 0.02% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 1,684 | $201.0K | 0.02% | 00.0% | Unchanged |
| Walleye Trading LLC | 1,709 | $204.0K | 0.00% | −2,815−62.2% | Reduced |
| AQR Capital Management LLC | 1,705 | $204.0K | 0.00% | +1,705 | New |
| CIBC World Markets Inc. | 1,739 | $208.0K | 0.00% | +1,739 | New |
| Crossmark Global Holdings, Inc. | 1,740 | $208.0K | 0.00% | +1,740 | New |
| IBM Retirement Fund | 1,754 | $209.0K | 0.02% | +1,754 | New |
| Clarkston Capital Partners, LLC | 1,802 | $215.0K | 0.00% | +1,802 | New |
| Chicago Partners Investment Group LLC | 1,607 | $215.0K | 0.02% | +1,607 | New |
| Capula Management Ltd | 1,870 | $223.0K | 0.02% | −7,356−79.7% | Reduced |
| Truist Financial Corp | 1,925 | $230.0K | 0.00% | +1,925 | New |
| Cigna Investments Inc | 1,978 | $236.0K | 0.02% | +1,978 | New |
| Mount Yale Investment Advisors, LLC | 1,992 | $238.0K | 0.03% | −393−16.5% | Reduced |
| Axiom Investment Management LLC | 2,000 | $239.0K | 0.24% | +2,000 | New |
| World Asset Management Inc | 2,086 | $249.0K | 0.02% | +2,086 | New |
| Bridgewater Advisors Inc. | 2,100 | $251.0K | 0.07% | +2,100 | New |
| Los Angeles Capital Management LLC | 2,154 | $257.0K | 0.00% | 00.0% | Unchanged |
| Aubrey Capital Management Ltd | 2,205 | $263.2K | 0.08% | +605+37.8% | Added |
| XTX Topco Ltd | 2,232 | $266.0K | 0.09% | −619−21.7% | Reduced |
| Appleton Partners Inc | 2,225 | $266.0K | 0.02% | 00.0% | Unchanged |
| Thoroughbred Financial Services, LLC | 2,323 | $277.0K | 0.07% | 00.0% | Unchanged |
| CIBC Asset Management Inc | 2,452 | $293.0K | 0.00% | +171+7.5% | Added |
| PEAK6 Investments LLC | 2,472 | $295.0K | 0.01% | +2,472 | New |
| Keebeck Alpha, LP | 2,537 | $303.0K | 0.09% | +2,537 | New |
| MML Investors Services, LLC | 2,563 | $306.0K | 0.00% | +151+6.3% | Added |
| First Mercantile Trust Co | 2,607 | $312.0K | 0.04% | −222−7.8% | Reduced |
| Connacht Asset Management LP | 2,660 | $318.0K | 0.36% | −1,048−28.3% | Reduced |
| Boothbay Fund Management, LLC | 2,714 | $324.0K | 0.01% | +178+7.0% | Added |
| Northwestern Mutual Wealth Management Co | 2,802 | $335.0K | 0.00% | +2+0.1% | Added |
| Harbor Financial Services, LLC | 2,903 | $347.0K | 0.15% | −250−7.9% | Reduced |
| SG3 Management, LLC | 3,000 | $358.0K | 0.13% | +3,000 | New |
| Zions Bancorporation, N.A. | 3,123 | $373.0K | 0.04% | +3,123 | New |
| Creative Planning | 3,171 | $379.0K | 0.00% | 00.0% | Unchanged |
| Utah Retirement Systems | 3,200 | $382.0K | 0.01% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,359 | $401.0K | 0.01% | +1,754+109.3% | Added |
| DuPont Capital Management Corp | 3,438 | $410.0K | 0.01% | −930−21.3% | Reduced |
| Bluestein R H & Co | 3,513 | $419.0K | 0.02% | 00.0% | Unchanged |
| Prelude Capital Management, LLC | 3,519 | $420.0K | 0.02% | −7,726−68.7% | Reduced |
| Capital International Sarl | 3,551 | $424.0K | 0.04% | −175−4.7% | Reduced |
| New York State Teachers Retirement System | 3,587 | $428.0K | 0.00% | +3,587 | New |
| Sigma Planning Corp | 3,664 | $437.0K | 0.01% | −243−6.2% | Reduced |
| Sumitomo Mitsui Trust Holdings, Inc. | 3,700 | $442.0K | 0.00% | −2,700−42.2% | Reduced |
| JB Capital LLC | 3,762 | $449.0K | 0.06% | +3,762 | New |
| Captrust Financial Advisors | 3,768 | $450.0K | 0.00% | −43−1.1% | Reduced |
| Profund Advisors LLC | 3,768 | $450.0K | 0.02% | +3,768 | New |
| O'Neil Global Advisors, Inc. | 3,825 | $457.0K | 0.35% | +3,825 | New |
| Vontobel Holding Ltd. | 3,917 | $468.0K | 0.00% | +3,917 | New |