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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11,110,445 | $471.2M | 0.01% | +11,110,445 | New |
| Vanguard Group Inc | 7,362,554 | $312.2M | 0.01% | −15,448−0.2% | Reduced |
| Capital World Investors | 3,265,300 | $138.5M | 0.02% | −400,000−10.9% | Reduced |
| State Street Corp | 2,655,736 | $112.6M | 0.00% | +83,172+3.2% | Added |
| ArrowMark Colorado Holdings LLC | 2,386,689 | $101.2M | 1.30% | −118,162−4.7% | Reduced |
| Fred Alger Management, LLC | 1,979,119 | $83.9M | 0.41% | −194,988−9.0% | Reduced |
| Bellevue Group AG | 1,850,891 | $78.5M | 1.27% | +307,624+19.9% | Added |
| GW&K Investment Management, LLC | 1,799,814 | $76.3M | 0.65% | +456,703+34.0% | Added |
| Jennison Associates LLC | 1,782,003 | $75.6M | 0.05% | −187,623−9.5% | Reduced |
| Geode Capital Management, LLC | 1,525,816 | $64.7M | 0.01% | +18,187+1.2% | Added |
| Champlain Investment Partners, LLC | 1,469,161 | $62.3M | 0.38% | −160,366−9.8% | Reduced |
| Millennium Management LLC | 1,434,656 | $60.8M | 0.05% | +380,703+36.1% | Added |
| Stephens Investment Management Group LLC | 1,274,482 | $54.1M | 0.74% | +138,263+12.2% | Added |
| Park West Asset Management LLC | 1,070,000 | $45.4M | 3.35% | +399,279+59.5% | Added |
| Divisadero Street Capital Management, LP | 1,052,606 | $44.6M | 5.74% | +1,052,606 | New |
| First Light Asset Management, LLC | 1,025,307 | $43.5M | 3.62% | +316,825+44.7% | Added |
| Chicago Capital, LLC | 1,003,147 | $42.5M | 1.18% | +182,085+22.2% | Added |
| Morgan Stanley | 992,711 | $42.1M | 0.00% | −26,700−2.6% | Reduced |
| Next Century Growth Investors LLC | 982,682 | $41.7M | 3.38% | +68,312+7.5% | Added |
| Janus Henderson Group PLC | 913,541 | $38.7M | 0.02% | −536,634−37.0% | Reduced |
| Paradice Investment Management LLC | 903,441 | $38.3M | 6.67% | +81,448+9.9% | Added |
| Two Sigma Advisers, LP | 901,883 | $38.2M | 0.09% | −229,700−20.3% | Reduced |
| Gilder Gagnon Howe & Co LLC | 872,974 | $37.0M | 0.44% | −155,659−15.1% | Reduced |
| Ameriprise Financial Inc | 870,840 | $36.9M | 0.01% | −609,934−41.2% | Reduced |
| Two Sigma Investments, LP | 824,713 | $35.0M | 0.08% | −310,467−27.3% | Reduced |
| Marshall Wace, LLP | 813,594 | $34.5M | 0.04% | +289,201+55.1% | Added |
| Driehaus Capital Management LLC | 777,590 | $33.0M | 0.28% | −177,654−18.6% | Reduced |
| Brown Capital Management LLC | 739,096 | $31.3M | 0.67% | −175,359−19.2% | Reduced |
| Capital International Investors | 638,228 | $27.1M | 0.01% | +31,759+5.2% | Added |
| Northern Trust Corp | 635,688 | $27.0M | 0.00% | +271,144+74.4% | Added |
| Goldman Sachs Group Inc | 620,546 | $26.3M | 0.01% | +428,822+223.7% | Added |
| Victory Capital Management Inc | 587,247 | $24.9M | 0.02% | +183,877+45.6% | Added |
| Charles Schwab Investment Management Inc | 586,063 | $24.9M | 0.00% | +18,874+3.3% | Added |
| Jacobs Levy Equity Management, Inc | 574,676 | $24.4M | 0.09% | −669,464−53.8% | Reduced |
| FMR LLC | 564,880 | $24.0M | 0.00% | −328,206−36.7% | Reduced |
| Kingdon Capital Management, L.L.C. | 530,000 | $22.5M | 3.30% | +161,000+43.6% | Added |
| Nuveen Asset Management, LLC | 472,425 | $20.0M | 0.01% | +227,833+93.1% | Added |
| Oberweis Asset Management Inc | 448,050 | $19.0M | 0.97% | +166,050+58.9% | Added |
| Bank of America Corp | 445,610 | $18.9M | 0.00% | −187,261−29.6% | Reduced |
| Bank of New York Mellon Corp | 432,562 | $18.3M | 0.00% | −61,751−12.5% | Reduced |
| Jefferies Financial Group Inc. | 378,336 | $16.0M | 0.26% | +293,580+346.4% | Added |
| Assenagon Asset Management S.A. | 377,565 | $16.0M | 0.03% | +66,138+21.2% | Added |
| Principal Financial Group Inc | 370,322 | $15.7M | 0.01% | −77,771−17.4% | Reduced |
| Citadel Advisors LLC | 347,823 | $14.8M | 0.02% | −1,460,918−80.8% | Reduced |
| Cubist Systematic Strategies, LLC | 320,449 | $13.6M | 0.21% | +320,449 | New |
| Invesco Ltd. | 317,585 | $13.5M | 0.00% | +114,084+56.1% | Added |
| BNP Paribas Arbitrage, SA | 293,587 | $12.5M | 0.01% | +99,890+51.6% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 272,097 | $11.5M | 0.06% | +66,687+32.5% | Added |
| Silvercrest Asset Management Group LLC | 268,218 | $11.4M | 0.08% | −1,547−0.6% | Reduced |
| New York State Common Retirement Fund | 267,457 | $11.3M | 0.02% | −117,050−30.4% | Reduced |
| Envestnet Asset Management Inc | 265,669 | $11.3M | 0.00% | +14,655+5.8% | Added |
| Point72 Asset Management, L.P. | 240,706 | $10.2M | 0.04% | +240,706 | New |
| Barclays PLC | 231,065 | $9.80M | 0.00% | −174,647−43.0% | Reduced |
| UBS Group AG | 225,482 | $9.56M | 0.00% | −70,305−23.8% | Reduced |
| Baillie Gifford & Co | 222,266 | $9.43M | 0.01% | −120−0.1% | Reduced |
| Beaconlight Capital, LLC | 215,615 | $9.14M | 3.76% | +94,317+77.8% | Added |
| Russell Investments Group, Ltd. | 212,634 | $9.02M | 0.01% | −20,219−8.7% | Reduced |
| Renaissance Technologies LLC | 210,427 | $8.92M | 0.01% | −85,396−28.9% | Reduced |
| DAFNA Capital Management LLC | 204,208 | $8.66M | 2.05% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 197,583 | $8.38M | 0.00% | +113,355+134.6% | Added |
| Rhumbline Advisers | 183,548 | $7.78M | 0.01% | −3,231−1.7% | Reduced |
| Legal & General Group Plc | 181,174 | $7.68M | 0.00% | −1,769−1.0% | Reduced |
| Frontier Capital Management Co LLC | 180,861 | $7.67M | 0.07% | −1,363−0.7% | Reduced |
| Royal Bank of Canada | 172,852 | $7.33M | 0.00% | −17,856−9.4% | Reduced |
| Adage Capital Partners GP, L.L.C. | 159,604 | $6.77M | 0.01% | +94,604+145.5% | Added |
| Polar Capital Holdings Plc | 153,952 | $6.53M | 0.04% | +153,952 | New |
| Integral Health Asset Management, LLC | 150,000 | $6.36M | 0.75% | +150,000 | New |
| UBS Asset Management Americas Inc | 147,606 | $6.26M | 0.00% | −5,546−3.6% | Reduced |
| Standard Life Aberdeen plc | 144,451 | $6.13M | 0.01% | +144,451 | New |
| Public Sector Pension Investment Board | 138,886 | $5.89M | 0.03% | −3,200−2.3% | Reduced |
| Trexquant Investment LP | 137,368 | $5.83M | 0.07% | −71,021−34.1% | Reduced |
| KBC Group NV | 136,018 | $5.77M | 0.02% | −103,396−43.2% | Reduced |
| FIL Ltd | 135,392 | $5.74M | 0.01% | −230−0.2% | Reduced |
| Prudential Financial Inc | 135,100 | $5.73M | 0.01% | +13,765+11.3% | Added |
| Alliancebernstein L.P. | 134,447 | $5.70M | 0.00% | −14,438−9.7% | Reduced |
| Formula Growth Ltd | 128,125 | $5.43M | 1.87% | +3,479+2.8% | Added |
| Swiss National Bank | 126,200 | $5.35M | 0.00% | −800−0.6% | Reduced |
| Kennedy Capital Management, Inc. | 125,034 | $5.30M | 0.12% | +125,034 | New |
| Gotham Asset Management, LLC | 120,306 | $5.10M | 0.05% | −10,415−8.0% | Reduced |
| Truist Financial Corp | 117,127 | $4.97M | 0.01% | +7,900+7.2% | Added |
| Jane Street Group, LLC | 115,387 | $4.89M | 0.01% | +47,692+70.5% | Added |
| Lisanti Capital Growth, LLC | 114,925 | $4.87M | 1.23% | −43,335−27.4% | Reduced |
| Simplify Asset Management Inc. | 114,604 | $4.86M | 0.33% | +114,604 | New |
| State of Wisconsin Investment Board | 106,587 | $4.52M | 0.01% | −21,024−16.5% | Reduced |
| Raymond James & Associates | 104,418 | $4.43M | 0.00% | +7,747+8.0% | Added |
| First Trust Advisors LP | 99,105 | $4.20M | 0.00% | −279,792−73.8% | Reduced |
| Banque Pictet & Cie SA | 95,334 | $4.04M | 0.04% | −66,938−41.3% | Reduced |
| Capital Fund Management S.A. | 92,690 | $3.93M | 0.04% | +92,690 | New |
| Rice Hall James & Associates, LLC | 92,258 | $3.91M | 0.21% | −1,035−1.1% | Reduced |
| Citigroup Inc | 82,030 | $3.48M | 0.00% | −27,644−25.2% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 79,871 | $3.39M | 0.01% | +30,935+63.2% | Added |
| Engineers Gate Manager LP | 79,103 | $3.35M | 0.07% | −16,985−17.7% | Reduced |
| Lighthouse Investment Partners, LLC | 76,183 | $3.23M | 0.17% | +76,183 | New |
| Mizuho Markets Americas LLC | 71,068 | $3.01M | 0.07% | −1,188−1.6% | Reduced |
| New York State Teachers Retirement System | 68,600 | $2.91M | 0.01% | −300−0.4% | Reduced |
| Prelude Capital Management, LLC | 68,110 | $2.89M | 0.22% | +30,189+79.6% | Added |
| Aquatic Capital Management LLC | 67,500 | $2.86M | 0.07% | +17,747+35.7% | Added |
| Natixis Advisors, L.P. | 63,706 | $2.70M | 0.01% | +10,462+19.6% | Added |
| Cerity Partners LLC | 62,796 | $2.66M | 0.01% | +11,247+21.8% | Added |
| Great West Life Assurance Co | 62,173 | $2.64M | 0.00% | −16,614−21.1% | Reduced |