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, Q4 2023
Institutional positions in Tandem Diabetes Care Inc as of Dec 31, 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
- 268
- +43 vs. Q3 2023
- Shares held
- 70.9M
- +1.30M (+1.9%) vs. Q3 2023
- Total value
- $2.10B
- +$651.3M (+45.1%) vs. Q3 2023
- New holders
- 75
- 84 more added
- Sold out
- 32
- 86 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Tandem Diabetes Care Inc; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock Inc. | 9,245,653 | $273.5M | 0.01% | +389,166+4.4% | Added |
| Vanguard Group Inc | 7,021,906 | $207.7M | 0.00% | +18,571+0.3% | Added |
| Capital World Investors | 6,384,111 | $188.8M | 0.03% | −161,227−2.5% | Reduced |
| Eminence Capital, LP | 5,170,451 | $152.9M | 2.99% | −319,566−5.8% | Reduced |
| FMR LLC | 2,977,274 | $88.1M | 0.01% | −14,793−0.5% | Reduced |
| ArrowMark Colorado Holdings LLC | 2,935,003 | $86.8M | 0.96% | +1,303,459+79.9% | Added |
| Janus Henderson Group PLC | 2,577,742 | $76.2M | 0.05% | −93,489−3.5% | Reduced |
| State Street Corp | 2,274,566 | $67.3M | 0.00% | +104,722+4.8% | Added |
| Bellevue Group AG | 1,992,317 | $58.9M | 0.90% | −150,452−7.0% | Reduced |
| Champlain Investment Partners, LLC | 1,529,832 | $45.3M | 0.27% | −86,047−5.3% | Reduced |
| Jacobs Levy Equity Management, Inc | 1,290,967 | $38.2M | 0.19% | +497,479+62.7% | Added |
| Jennison Associates LLC | 1,290,590 | $38.2M | 0.03% | +167,675+14.9% | Added |
| GW&K Investment Management, LLC | 1,226,758 | $36.3M | 0.34% | +1,226,758 | New |
| Capital International Investors | 1,083,561 | $32.1M | 0.01% | −710,626−39.6% | Reduced |
| Paradice Investment Management LLC | 1,081,886 | $32.0M | 4.02% | −438,179−28.8% | Reduced |
| Geode Capital Management, LLC | 1,039,687 | $30.8M | 0.00% | +40,376+4.0% | Added |
| Two Sigma Advisers, LP | 1,001,583 | $29.6M | 0.07% | −28,800−2.8% | Reduced |
| Point72 Asset Management, L.P. | 990,336 | $29.3M | 0.09% | +989,028+75,613.8% | Added |
| Stephens Investment Management Group LLC | 962,272 | $28.5M | 0.42% | −26,823−2.7% | Reduced |
| Voloridge Investment Management, LLC | 952,562 | $28.2M | 0.11% | −95,401−9.1% | Reduced |
| Morgan Stanley | 872,165 | $25.8M | 0.00% | +97,522+12.6% | Added |
| Brown Capital Management LLC | 734,627 | $21.7M | 0.33% | −829,915−53.0% | Reduced |
| Two Sigma Investments, LP | 701,354 | $20.7M | 0.05% | −79,180−10.1% | Reduced |
| Millennium Management LLC | 630,843 | $18.7M | 0.02% | +126,974+25.2% | Added |
| Chicago Capital, LLC | 476,937 | $14.1M | 0.51% | −427,473−47.3% | Reduced |
| Next Century Growth Investors LLC | 461,495 | $13.7M | 1.33% | +461,495 | New |
| Squarepoint Ops LLC | 456,520 | $13.5M | 0.06% | +303,313+198.0% | Added |
| Bank of New York Mellon Corp | 445,558 | $13.2M | 0.00% | −69,099−13.4% | Reduced |
| Charles Schwab Investment Management Inc | 396,741 | $11.7M | 0.00% | +29,730+8.1% | Added |
| Coronation Fund Managers Ltd. | 376,355 | $11.1M | 0.31% | +21,451+6.0% | Added |
| Citadel Advisors LLC | 360,713 | $10.7M | 0.01% | −284,651−44.1% | Reduced |
| First Light Asset Management, LLC | 360,243 | $10.7M | 0.86% | −1,080,723−75.0% | Reduced |
| Marshall Wace, LLP | 351,915 | $10.4M | 0.02% | +172,875+96.6% | Added |
| Northern Trust Corp | 350,824 | $10.4M | 0.00% | −26,065−6.9% | Reduced |
| Principal Financial Group Inc | 344,349 | $10.2M | 0.01% | −10,803−3.0% | Reduced |
| Ameriprise Financial Inc | 313,554 | $9.35M | 0.00% | +40,675+14.9% | Added |
| New York State Common Retirement Fund | 315,502 | $9.33M | 0.01% | −684−0.2% | Reduced |
| Fred Alger Management, LLC | 302,779 | $8.96M | 0.05% | −22,910−7.0% | Reduced |
| Baillie Gifford & Co | 262,643 | $7.77M | 0.01% | −1130.0% | Reduced |
| Alberta Investment Management Corp | 262,574 | $7.77M | 0.07% | +20,996+8.7% | Added |
| Silvercrest Asset Management Group LLC | 255,251 | $7.55M | 0.05% | +179+0.1% | Added |
| Russell Investments Group, Ltd. | 247,325 | $7.32M | 0.01% | +109,505+79.5% | Added |
| Invesco Ltd. | 245,687 | $7.27M | 0.00% | −28,147−10.3% | Reduced |
| Invenomic Capital Management LP | 241,006 | $7.13M | 0.38% | −31,438−11.5% | Reduced |
| KBC Group NV | 239,944 | $7.10M | 0.03% | +110,630+85.6% | Added |
| Tudor Investment Corp Et Al | 231,738 | $6.85M | 0.09% | +16,356+7.6% | Added |
| Goldman Sachs Group Inc | 225,725 | $6.68M | 0.00% | +144,910+179.3% | Added |
| DAFNA Capital Management LLC | 220,708 | $6.53M | 1.56% | 00.0% | Unchanged |
| Banque Pictet & Cie SA | 198,326 | $5.87M | 0.07% | +87,807+79.4% | Added |
| Kingdon Capital Management, L.L.C. | 194,200 | $5.74M | 1.09% | +194,200 | New |
| Jane Street Group, LLC | 190,691 | $5.64M | 0.01% | +143,982+308.3% | Added |
| Envestnet Asset Management Inc | 185,140 | $5.48M | 0.00% | +166,907+915.4% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 184,322 | $5.45M | 0.03% | +58,981+47.1% | Added |
| Legal & General Group Plc | 181,367 | $5.36M | 0.00% | −1,375−0.8% | Reduced |
| Rhumbline Advisers | 172,081 | $5.09M | 0.01% | −1,175−0.7% | Reduced |
| Trexquant Investment LP | 161,954 | $4.79M | 0.11% | +99,631+159.9% | Added |
| Frontier Capital Management Co LLC | 145,909 | $4.32M | 0.04% | +690.0% | Added |
| Nuveen Asset Management, LLC | 145,101 | $4.29M | 0.00% | −11,047−7.1% | Reduced |
| Alliancebernstein L.P. | 143,718 | $4.25M | 0.00% | −221,414−60.6% | Reduced |
| Weiss Multi-Strategy Advisers LLC | 142,024 | $4.20M | 0.11% | +111,254+361.6% | Added |
| Public Sector Pension Investment Board | 135,050 | $3.99M | 0.03% | +54,614+67.9% | Added |
| Mirae Asset Global Investments Co., Ltd. | 130,858 | $3.90M | 0.01% | −23,457−15.2% | Reduced |
| Swiss National Bank | 128,200 | $3.79M | 0.00% | −13,800−9.7% | Reduced |
| Skandinaviska Enskilda Banken AB (publ) | 118,221 | $3.50M | 0.02% | 00.0% | Unchanged |
| State of Wisconsin Investment Board | 116,008 | $3.43M | 0.01% | +31,393+37.1% | Added |
| Susquehanna International Group, LLP | 113,776 | $3.37M | 0.01% | −232,614−67.2% | Reduced |
| Prudential Financial Inc | 108,963 | $3.22M | 0.00% | −20,761−16.0% | Reduced |
| Balyasny Asset Management LLC | 106,409 | $3.15M | 0.01% | +106,409 | New |
| Lisanti Capital Growth, LLC | 105,895 | $3.13M | 0.74% | +105,895 | New |
| Rice Hall James & Associates, LLC | 104,430 | $3.09M | 0.18% | −2,946−2.7% | Reduced |
| D. E. Shaw & Co., Inc. | 93,140 | $2.76M | 0.00% | −157,804−62.9% | Reduced |
| UBS Asset Management Americas Inc | 92,470 | $2.74M | 0.00% | −2,677−2.8% | Reduced |
| Raymond James & Associates | 91,985 | $2.72M | 0.00% | +51,721+128.5% | Added |
| California Public Employees Retirement System | 91,206 | $2.70M | 0.00% | 00.0% | Unchanged |
| Credit Suisse AG | 89,140 | $2.64M | 0.00% | +3,458+4.0% | Added |
| Truist Financial Corp | 87,484 | $2.59M | 0.00% | +87,484 | New |
| JPMorgan Chase & Co | 86,425 | $2.56M | 0.00% | −72,993−45.8% | Reduced |
| Bank of America Corp | 82,872 | $2.45M | 0.00% | −7,312−8.1% | Reduced |
| Great West Life Assurance Co | 80,880 | $2.38M | 0.01% | +1,473+1.9% | Added |
| Gotham Asset Management, LLC | 75,273 | $2.23M | 0.04% | +60,555+411.4% | Added |
| New York State Teachers Retirement System | 70,000 | $2.07M | 0.00% | 00.0% | Unchanged |
| California State Teachers Retirement System | 68,661 | $2.03M | 0.00% | −2,779−3.9% | Reduced |
| Royal Bank of Canada | 68,407 | $2.02M | 0.00% | +37,682+122.6% | Added |
| Bridgewater Associates, LP | 68,384 | $2.02M | 0.01% | −9,175−11.8% | Reduced |
| HRT Financial LP | 67,319 | $1.99M | 0.01% | +67,319 | New |
| Beaconlight Capital, LLC | 66,327 | $1.96M | 0.93% | +66,327 | New |
| State Board of Administration of Florida Retirement System | 65,525 | $1.94M | 0.00% | +48+0.1% | Added |
| Nomura Holdings Inc | 59,691 | $1.77M | 0.02% | +22,461+60.3% | Added |
| Thrivent Financial for Lutherans | 57,990 | $1.72M | 0.00% | −1,543−2.6% | Reduced |
| Capital International Sarl | 56,242 | $1.66M | 0.06% | +3,106+5.8% | Added |
| Texas Permanent School Fund | 55,995 | $1.66M | 0.01% | +961+1.7% | Added |
| Capital International Ltd | 55,912 | $1.65M | 0.08% | −1,077−1.9% | Reduced |
| Schonfeld Strategic Advisors LLC | 54,718 | $1.62M | 0.01% | +54,718 | New |
| Dimensional Fund Advisors LP | 53,832 | $1.59M | 0.00% | −81,177−60.1% | Reduced |
| M&T Bank Corp | 49,649 | $1.47M | 0.01% | +26,943+118.7% | Added |
| Barclays PLC | 49,650 | $1.47M | 0.00% | −34,490−41.0% | Reduced |
| Deutsche Bank AG | 46,835 | $1.39M | 0.00% | +42,273+926.6% | Added |
| Citigroup Inc | 42,978 | $1.27M | 0.00% | +13,245+44.5% | Added |
| Formula Growth Ltd | 40,746 | $1.21M | 0.39% | 00.0% | Unchanged |
| State of Alaska, Department of Revenue | 40,008 | $1.18M | 0.01% | −511−1.3% | Reduced |