Tandem Diabetes CareTNDM
13F holders, Q3 2024 (September 30)331holders +15
54new positions
41sold out
8famous investors
$42.41avg. 13F price*
At the end of Q3 2024, 331 institutions reported holding Tandem Diabetes Care Inc. (TNDM) in their 13F filings, up 15 from Q2 2024. 54 opened new positions and 41 sold out. The largest holders were BlackRock, Inc. ($471.2M), Vanguard Group Inc. ($312.2M) and Capital World Investors ($138.5M). 8 famous investors held it, including Israel Englander (0.1% of Millennium Management's portfolio), Joel Greenblatt (0.1% of Gotham Asset Management's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Tandem Diabetes Care Inc.
- CUSIP
- 875372203
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2024 → Q3 2024
| Institutions | Total Value | |
|---|---|---|
| New Positions | 54 | $117.5M |
| Exits | 41 | $42.2M |
All 13F filers, Q2 2024 → Q3 2024: 8,359,214 shares bought and 8,783,522 shares sold, net −424,308 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 331 holders
| BlackRock, Inc. | 0.01% | — | 11,110,445 | $471.2M |
| Vanguard Group Inc. | 0.01% | Reduce -0.2% | 7,362,554 | $312.2M |
| Capital World Investors | 0.02% | Reduce -10.9% | 3,265,300 | $138.5M |
| State Street Corp. | 0.00% | Add +3.2% | 2,655,736 | $112.6M |
| ArrowMark Colorado Holdings LLC | 1.30% | Reduce -4.7% | 2,386,689 | $101.2M |
| Fred Alger Management, LLC | 0.41% | Reduce -9.0% | 1,979,119 | $83.9M |
| Bellevue Group AG | 1.27% | Add +19.9% | 1,850,891 | $78.5M |
| GW&K Investment Management, LLC | 0.65% | Add +34.0% | 1,799,814 | $76.3M |
| Jennison Associates LLC | 0.05% | Reduce -9.5% | 1,782,003 | $75.6M |
| Geode Capital Management, LLC | 0.01% | Add +1.2% | 1,525,816 | $64.7M |
| Champlain Investment Partners, LLC | 0.38% | Reduce -9.8% | 1,469,161 | $62.3M |
| Millennium Management | 0.05% | Add +36.1% | 1,434,656 | $60.8M |
| Stephens Investment Management Group LLC | 0.74% | Add +12.2% | 1,274,482 | $54.1M |
| Park West Asset Management LLC | 3.35% | Add +59.5% | 1,070,000 | $45.4M |
| Divisadero Street Capital Management, LP | 5.74% | New | 1,052,606 | $44.6M |
| First Light Asset Management, LLC | 3.62% | Add +44.7% | 1,025,307 | $43.5M |
| Chicago Capital, LLC | 1.18% | Add +22.2% | 1,003,147 | $42.5M |
| Morgan Stanley | 0.00% | Reduce -2.6% | 992,711 | $42.1M |
| Next Century Growth Investors LLC | 3.38% | Add +7.5% | 982,682 | $41.7M |
| Janus Henderson Group PLC | 0.02% | Reduce -37.0% | 913,541 | $38.7M |
| Paradice Investment Management LLC | 6.67% | Add +9.9% | 903,441 | $38.3M |
| Two Sigma Advisers, LP | 0.09% | Reduce -20.3% | 901,883 | $38.2M |
| Gilder Gagnon Howe & Co. LLC | 0.44% | Reduce -15.1% | 872,974 | $37.0M |
| Ameriprise Financial Inc. | 0.01% | Reduce -41.2% | 870,840 | $36.9M |
| Two Sigma Investments, LP | 0.08% | Reduce -27.4% | 824,713 | $35.0M |
| Marshall Wace, LLP | 0.05% | Add +55.1% | 813,594 | $34.5M |
| Driehaus Capital Management LLC | 0.28% | Reduce -18.6% | 777,590 | $33.0M |
| Brown Capital Management LLC | 0.67% | Reduce -19.2% | 739,096 | $31.3M |
| Capital International Investors | 0.01% | Add +5.2% | 638,228 | $27.1M |
| Northern Trust Corp. | 0.00% | Add +74.4% | 635,688 | $27.0M |
| Goldman Sachs Group Inc. | 0.01% | Add +223.7% | 620,546 | $26.3M |
| Victory Capital Management Inc. | 0.02% | Add +45.6% | 587,247 | $24.9M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +3.3% | 586,063 | $24.9M |
| Jacobs Levy Equity Management, Inc. | 0.09% | Reduce -53.8% | 574,676 | $24.4M |
| FMR LLC | 0.00% | Reduce -36.8% | 564,880 | $24.0M |
| Kingdon Capital Management, L.L.C. | 3.30% | Add +43.6% | 530,000 | $22.5M |
| Nuveen Asset Management, LLC | 0.01% | Add +93.2% | 472,425 | $20.0M |
| Oberweis Asset Management Inc./ | 0.97% | Add +58.9% | 448,050 | $19.0M |
| Bank of America Corp. | 0.00% | Reduce -29.6% | 445,610 | $18.9M |
| Bank of New York Mellon Corp | 0.00% | Reduce -12.5% | 432,562 | $18.3M |
| Jefferies Financial Group Inc. | 0.28% | Add +346.4% | 378,336 | $16.0M |
| Assenagon Asset Management S.A. | 0.03% | Add +21.2% | 377,565 | $16.0M |
| Principal Financial Group Inc. | 0.01% | Reduce -17.4% | 370,322 | $15.7M |
| Citadel Advisors | 0.02% | Reduce -80.8% | 347,823 | $14.8M |
| Cubist Systematic Strategies, LLC | 0.21% | New | 320,449 | $13.6M |
| Invesco Ltd. | 0.00% | Add +56.1% | 317,585 | $13.5M |
| BNP Paribas Financial Markets | 0.01% | Add +51.6% | 293,587 | $12.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.06% | Add +32.5% | 272,097 | $11.5M |
| Silvercrest Asset Management Group LLC | 0.08% | Reduce -0.6% | 268,218 | $11.4M |
| New York State Common Retirement Fund | 0.02% | Reduce -30.4% | 267,457 | $11.3M |
| Envestnet Asset Management Inc. | 0.00% | Add +5.8% | 265,669 | $11.3M |
| Point72 Asset Management | 0.04% | New | 240,706 | $10.2M |
| Barclays PLC | 0.00% | Reduce -43.0% | 231,065 | $9.8M |
| UBS Group AG | 0.00% | Reduce -23.8% | 225,482 | $9.6M |
| Baillie Gifford & Co. | 0.01% | Reduce -0.1% | 222,266 | $9.4M |
| Beaconlight Capital, LLC | 3.76% | Add +77.8% | 215,615 | $9.1M |
| Russell Investments Group, Ltd. | 0.01% | Reduce -8.7% | 212,634 | $9.0M |
| Renaissance Technologies | 0.01% | Reduce -28.9% | 210,427 | $8.9M |
| DAFNA Capital Management LLC | 2.07% | No change | 204,208 | $8.7M |
| JPMorgan Chase & Co. | 0.00% | Add +134.6% | 197,583 | $8.4M |
| Rhumbline Advisers | 0.01% | Reduce -1.7% | 183,548 | $7.8M |
| Legal & General Group Plc | 0.00% | Reduce -1.0% | 181,174 | $7.7M |
| Frontier Capital Management Co. LLC | 0.07% | Reduce -0.8% | 180,861 | $7.7M |
| Royal Bank of Canada | 0.00% | Reduce -9.4% | 172,852 | $7.3M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | Add +145.5% | 159,604 | $6.8M |
| Polar Capital Holdings Plc | 0.03% | New | 153,952 | $6.5M |
| Integral Health Asset Management, LLC | 0.75% | New | 150,000 | $6.4M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -3.6% | 147,606 | $6.3M |
| Aberdeen Group plc | 0.01% | New | 144,451 | $6.1M |
| Public Sector Pension Investment Board | 0.03% | Reduce -2.3% | 138,886 | $5.9M |
| Trexquant Investment LP | 0.07% | Reduce -34.1% | 137,368 | $5.8M |
| KBC Group NV | 0.02% | Reduce -43.2% | 136,018 | $5.8M |
| FIL Ltd | 0.01% | Reduce -0.2% | 135,392 | $5.7M |
| Prudential Financial Inc. | 0.01% | Add +11.3% | 135,100 | $5.7M |
| Alliancebernstein L.P. | 0.00% | Reduce -9.7% | 134,447 | $5.7M |
| Formula Growth Ltd. | 1.87% | Add +2.8% | 128,125 | $5.4M |
| Swiss National Bank | 0.00% | Reduce -0.6% | 126,200 | $5.4M |
| Kennedy Capital Management LLC | 0.12% | New | 125,034 | $5.3M |
| Gotham Asset Management | 0.05% | Reduce -8.0% | 120,306 | $5.1M |
| Truist Financial Corp. | 0.01% | Add +7.2% | 117,127 | $5.0M |
| Jane Street Group, LLC | 0.01% | Add +70.5% | 115,387 | $4.9M |
| Lisanti Capital Growth, LLC | 1.23% | Reduce -27.4% | 114,925 | $4.9M |
| Simplify Asset Management Inc. | 0.33% | New | 114,604 | $4.9M |
| State of Wisconsin Investment Board | 0.01% | Reduce -16.5% | 106,587 | $4.5M |
| Raymond James & Associates | 0.00% | Add +8.0% | 104,418 | $4.4M |
| First Trust Advisors LP | 0.00% | Reduce -73.8% | 99,105 | $4.2M |
| Banque Pictet & Cie SA | 0.04% | Reduce -41.3% | 95,334 | $4.0M |
| Capital Fund Management S.A. | 0.04% | New | 92,690 | $3.9M |
| Rice Hall James & Associates, LLC | 0.21% | Reduce -1.1% | 92,258 | $3.9M |
| Citigroup Inc. | 0.00% | Reduce -25.2% | 82,030 | $3.5M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.01% | Add +63.2% | 79,871 | $3.4M |
| Engineers Gate Manager LP | 0.07% | Reduce -17.7% | 79,103 | $3.4M |
| Lighthouse Investment Partners, LLC | 0.17% | New | 76,183 | $3.2M |
| Mizuho Markets Americas LLC | 0.07% | Reduce -1.6% | 71,068 | $3.0M |
| New York State Teachers Retirement System | 0.01% | Reduce -0.4% | 68,600 | $2.9M |
| Prelude Capital Management, LLC | 0.22% | Add +79.6% | 68,110 | $2.9M |
| Aquatic Capital Management LLC | 0.07% | Add +35.7% | 67,500 | $2.9M |
| Natixis Advisors, LLC | 0.01% | Add +19.6% | 63,706 | $2.7M |
| Cerity Partners LLC | 0.01% | Add +21.8% | 62,796 | $2.7M |
| CANADA LIFE ASSURANCE Co | 0.00% | Reduce -21.1% | 62,173 | $2.6M |
"% of holder's portfolio" is TNDM's weight in each manager's 13F, not the share of Tandem Diabetes Care Inc. the manager owns.