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 2024
Institutional positions in Tandem Diabetes Care Inc as of Sep 30, 2024. 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
- 332
- +18 vs. Q2 2024
- Shares held
- 73.1M
- +10.7M (+17.2%) vs. Q2 2024
- Total value
- $3.10B
- +$586.3M (+23.3%) vs. Q2 2024
- New holders
- 59
- 109 more added
- Sold out
- 41
- 117 more reduced
3 institutions that held it in Q2 2024 haven't filed for Q3 2024 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 2024: 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 2024
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q2 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Victory Capital Management Inc | 587,247 | $24.9M | 0.02% | +183,877+45.6% | Added |
| Goldman Sachs Group Inc | 620,546 | $26.3M | 0.01% | +428,822+223.7% | Added |
| Northern Trust Corp | 635,688 | $27.0M | 0.00% | +271,144+74.4% | Added |
| Capital International Investors | 638,228 | $27.1M | 0.01% | +31,759+5.2% | Added |
| Brown Capital Management LLC | 739,096 | $31.3M | 0.67% | −175,359−19.2% | Reduced |
| Driehaus Capital Management LLC | 777,590 | $33.0M | 0.28% | −177,654−18.6% | Reduced |
| Marshall Wace, LLP | 813,594 | $34.5M | 0.04% | +289,201+55.1% | Added |
| Two Sigma Investments, LP | 824,713 | $35.0M | 0.08% | −310,467−27.3% | Reduced |
| Ameriprise Financial Inc | 870,840 | $36.9M | 0.01% | −609,934−41.2% | Reduced |
| Gilder Gagnon Howe & Co LLC | 872,974 | $37.0M | 0.44% | −155,659−15.1% | Reduced |
| Two Sigma Advisers, LP | 901,883 | $38.2M | 0.09% | −229,700−20.3% | Reduced |
| Paradice Investment Management LLC | 903,441 | $38.3M | 6.67% | +81,448+9.9% | Added |
| Janus Henderson Group PLC | 913,541 | $38.7M | 0.02% | −536,634−37.0% | Reduced |
| Next Century Growth Investors LLC | 982,682 | $41.7M | 3.38% | +68,312+7.5% | Added |
| Morgan Stanley | 992,711 | $42.1M | 0.00% | −26,700−2.6% | Reduced |
| Chicago Capital, LLC | 1,003,147 | $42.5M | 1.18% | +182,085+22.2% | Added |
| First Light Asset Management, LLC | 1,025,307 | $43.5M | 3.62% | +316,825+44.7% | Added |
| Divisadero Street Capital Management, LP | 1,052,606 | $44.6M | 5.74% | +1,052,606 | New |
| Park West Asset Management LLC | 1,070,000 | $45.4M | 3.35% | +399,279+59.5% | Added |
| Stephens Investment Management Group LLC | 1,274,482 | $54.1M | 0.74% | +138,263+12.2% | Added |
| Millennium Management LLC | 1,434,656 | $60.8M | 0.05% | +380,703+36.1% | Added |
| Champlain Investment Partners, LLC | 1,469,161 | $62.3M | 0.38% | −160,366−9.8% | Reduced |
| Geode Capital Management, LLC | 1,525,816 | $64.7M | 0.01% | +18,187+1.2% | Added |
| Jennison Associates LLC | 1,782,003 | $75.6M | 0.05% | −187,623−9.5% | Reduced |
| GW&K Investment Management, LLC | 1,799,814 | $76.3M | 0.65% | +456,703+34.0% | Added |
| Bellevue Group AG | 1,850,891 | $78.5M | 1.27% | +307,624+19.9% | Added |
| Fred Alger Management, LLC | 1,979,119 | $83.9M | 0.41% | −194,988−9.0% | Reduced |
| ArrowMark Colorado Holdings LLC | 2,386,689 | $101.2M | 1.30% | −118,162−4.7% | Reduced |
| State Street Corp | 2,655,736 | $112.6M | 0.00% | +83,172+3.2% | Added |
| Capital World Investors | 3,265,300 | $138.5M | 0.02% | −400,000−10.9% | Reduced |
| Vanguard Group Inc | 7,362,554 | $312.2M | 0.01% | −15,448−0.2% | Reduced |
| BlackRock, Inc. | 11,110,445 | $471.2M | 0.01% | +11,110,445 | New |
| Voloridge Investment Management, LLC | 0 | $0 | 0.00% | −230,410−100.0% | Sold out |
| Man Group plc | 0 | $0 | 0.00% | −121,245−100.0% | Sold out |
| Skandinaviska Enskilda Banken AB (publ) | 0 | $0 | 0.00% | −118,221−100.0% | Sold out |
| Nicholas Investment Partners, LP | 0 | $0 | 0.00% | −98,063−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −83,756−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −56,200−100.0% | Sold out |
| Twinbeech Capital LP | 0 | $0 | 0.00% | −40,801−100.0% | Sold out |
| Pura Vida Investments, LLC | 0 | $0 | 0.00% | −40,500−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −34,572−100.0% | Sold out |
| Capula Management Ltd | 0 | $0 | 0.00% | −23,256−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −20,250−100.0% | Sold out |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −19,260−100.0% | Sold out |
| Dynamic Technology Lab Private Ltd | 0 | $0 | 0.00% | −14,443−100.0% | Sold out |
| Quantbot Technologies LP | 0 | $0 | 0.00% | −13,089−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −12,709−100.0% | Sold out |
| Axq Capital, LP | 0 | $0 | 0.00% | −12,372−100.0% | Sold out |
| Ground Swell Capital, LLC | 0 | $0 | 0.00% | −9,698−100.0% | Sold out |
| GTS Securities LLC | 0 | $0 | 0.00% | −9,576−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −8,887−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −8,629−100.0% | Sold out |
| UniSuper Management Pty Ltd | 0 | $0 | 0.00% | −8,300−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −6,951−100.0% | Sold out |
| Versor Investments LP | 0 | $0 | 0.00% | −6,800−100.0% | Sold out |
| Meeder Asset Management Inc | 0 | $0 | 0.00% | −6,674−100.0% | Sold out |
| Omers Administration Corp | 0 | $0 | 0.00% | −6,400−100.0% | Sold out |
| Aigen Investment Management, LP | 0 | $0 | 0.00% | −6,255−100.0% | Sold out |
| Nebula Research & Development LLC | 0 | $0 | 0.00% | −5,980−100.0% | Sold out |
| Wedbush Securities Inc | 0 | $0 | 0.00% | −5,902−100.0% | Sold out |
| Stonebridge Capital Advisors LLC | 0 | $0 | 0.00% | −5,500−100.0% | Sold out |
| HighPoint Advisor Group LLC | 0 | $0 | 0.00% | −5,672−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −2,124−100.0% | Sold out |
| Arcadia Investment Management Corp | 0 | $0 | 0.00% | −1,851−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −926−100.0% | Sold out |
| ORG Partners LLC | 0 | $0 | 0.00% | −784−100.0% | Sold out |
| Newbridge Financial Services Group, Inc. | 0 | $0 | 0.00% | −630−100.0% | Sold out |
| GPS Wealth Strategies Group, LLC | 0 | $0 | 0.00% | −319−100.0% | Sold out |
| Cullen/Frost Bankers, Inc. | 0 | $0 | 0.00% | −135−100.0% | Sold out |
| Zions Bancorporation, N.A. | 0 | $0 | 0.00% | −93−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −90−100.0% | Sold out |
| Innealta Capital, LLC | 0 | $0 | 0.00% | −48−100.0% | Sold out |
| Valley National Advisers Inc | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| BlackRock Inc. | – | – | – | – | Not filed |
| Susquehanna Fundamental Investments, LLC | – | – | – | – | Not filed |
| Benjamin F. Edwards & Company, Inc. | – | – | – | – | Not filed |