Tandem Diabetes CareTNDM
13F holders, Q4 2025 (December 31)269holders +14
46new positions
32sold out
5famous investors
$21.98avg. 13F price*
At the end of Q4 2025, 269 institutions reported holding Tandem Diabetes Care Inc. (TNDM) in their 13F filings, up 14 from Q3 2025. 46 opened new positions and 32 sold out. The largest holders were BlackRock, Inc. ($245.1M), Vanguard Group Inc. ($161.4M) and Sessa Capital IM, L.P. ($109.9M). 5 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Paul Tudor Jones (0.0% of Tudor Investment Corporation's portfolio).
- Company
- Tandem Diabetes Care Inc.
- CUSIP
- 875372203
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 46 | $138.5M |
| Exits | 32 | $59.6M |
All 13F filers, Q3 2025 → Q4 2025: 13,154,385 shares bought and 12,695,510 shares sold, net +458,875 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 269 holders
| BlackRock, Inc. | 0.00% | Reduce -7.9% | 11,149,181 | $245.1M |
| Vanguard Group Inc. | 0.00% | Add +3.9% | 7,341,356 | $161.4M |
| Sessa Capital IM, L.P. | 2.18% | No change | 5,000,000 | $109.9M |
| ArrowMark Colorado Holdings LLC | 1.40% | Reduce -21.7% | 2,889,691 | $63.5M |
| GW&K Investment Management, LLC | 0.51% | Reduce -1.7% | 2,675,157 | $58.8M |
| State Street Corp. | 0.00% | Reduce -1.0% | 2,641,724 | $58.1M |
| Citadel Advisors | 0.03% | Add +5147.6% | 2,088,603 | $45.9M |
| Morgan Stanley | 0.00% | Add +182.1% | 2,080,497 | $45.7M |
| Paradice Investment Management LLC | 8.89% | Reduce -5.4% | 2,077,745 | $45.7M |
| Jennison Associates LLC | 0.03% | Add +42.3% | 2,021,376 | $44.4M |
| Goldman Sachs Group Inc. | 0.01% | Add +17.6% | 1,683,400 | $37.0M |
| Jacobs Levy Equity Management, Inc. | 0.14% | Add +11.6% | 1,653,708 | $36.3M |
| Geode Capital Management, LLC | 0.00% | Add +3.2% | 1,649,383 | $36.3M |
| Driehaus Capital Management LLC | 0.24% | New | 1,610,342 | $35.4M |
| Freestone Grove Partners LP | 0.23% | Reduce -22.9% | 1,442,836 | $31.7M |
| BNP Paribas Financial Markets | 0.02% | Add +468.5% | 1,248,481 | $27.4M |
| Assenagon Asset Management S.A. | 0.04% | New | 1,227,856 | $27.0M |
| Two Sigma Investments, LP | 0.04% | Add +7.5% | 1,201,527 | $26.4M |
| Baillie Gifford & Co. | 0.02% | Add +2.2% | 1,145,516 | $25.2M |
| First Light Asset Management, LLC | 1.83% | New | 1,089,493 | $23.9M |
| Two Sigma Advisers, LP | 0.04% | Reduce -3.4% | 937,983 | $20.6M |
| Barclays PLC | 0.01% | Reduce -22.9% | 917,927 | $20.2M |
| Marshall Wace, LLP | 0.02% | New | 875,531 | $19.2M |
| D. E. Shaw & Co. | 0.02% | Reduce -2.6% | 854,266 | $18.8M |
| Bank of America Corp. | 0.00% | Add +6.7% | 702,503 | $15.4M |
| Northern Trust Corp. | 0.00% | Add +0.1% | 691,693 | $15.2M |
| FMR LLC | 0.00% | Reduce -22.7% | 672,647 | $14.8M |
| Royce & Associates LP | 0.14% | Add +27.5% | 650,250 | $14.3M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +15.7% | 646,310 | $14.2M |
| Millennium Management | 0.01% | Reduce -17.3% | 583,573 | $12.8M |
| Nuveen, LLC | 0.00% | Add +12.1% | 563,274 | $12.4M |
| Aberdeen Group plc | 0.02% | Reduce -8.5% | 547,035 | $12.0M |
| UBS Group AG | 0.00% | Reduce -72.2% | 417,833 | $9.2M |
| Frontier Capital Management Co. LLC | 0.10% | Reduce -0.7% | 412,269 | $9.1M |
| Acadian Asset Management LLC | 0.01% | Reduce -57.3% | 392,763 | $8.6M |
| DAFNA Capital Management LLC | 1.84% | No change | 355,208 | $7.8M |
| Bank of New York Mellon Corp | 0.00% | Reduce -8.9% | 349,753 | $7.7M |
| JPMorgan Chase & Co. | 0.00% | Reduce -4.9% | 341,631 | $7.5M |
| AQR Capital Management | 0.00% | Reduce -18.2% | 339,579 | $7.5M |
| Principal Financial Group Inc. | 0.00% | Reduce -0.8% | 324,262 | $7.1M |
| Voya Investment Management LLC | 0.01% | Add +83.5% | 319,528 | $7.0M |
| Quantinno Capital Management LP | 0.01% | Add +45.7% | 292,509 | $6.4M |
| Invesco Ltd. | 0.00% | Reduce -8.1% | 277,722 | $6.1M |
| Sector Gamma As | 1.34% | Reduce -0.9% | 267,091 | $5.9M |
| Lisanti Capital Growth, LLC | 1.37% | New | 262,885 | $5.8M |
| Balyasny Asset Management L.P. | 0.01% | New | 262,788 | $5.8M |
| Edmond DE Rothschild Holding S.A. | 0.08% | Reduce -22.5% | 258,200 | $5.7M |
| Public Sector Pension Investment Board | 0.02% | Reduce -11.0% | 234,673 | $5.2M |
| Alliancebernstein L.P. | 0.00% | Add +4.7% | 234,293 | $5.1M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -6.2% | 221,654 | $4.9M |
| Jane Street Group, LLC | 0.01% | Reduce -3.4% | 209,975 | $4.6M |
| Royal Bank of Canada | 0.00% | Reduce -69.4% | 208,528 | $4.6M |
| Rhumbline Advisers | 0.00% | Reduce -3.1% | 184,219 | $4.0M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | New | 182,995 | $4.0M |
| Canada Pension Plan Investment Board | 0.00% | No change | 177,600 | $3.9M |
| Legal & General Group Plc | 0.00% | Reduce -5.8% | 171,861 | $3.8M |
| HRT Financial LP | 0.01% | Add +92.1% | 170,480 | $3.7M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -10.8% | 164,902 | $3.6M |
| Panagora Asset Management Inc. | 0.01% | Reduce -25.1% | 146,234 | $3.2M |
| Mizuho Markets Americas LLC | 0.07% | Add +23.2% | 144,617 | $3.2M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 135,753 | $3.0M |
| Swiss National Bank | 0.00% | Add +3.3% | 133,300 | $2.9M |
| Susquehanna International Group, LLP | 0.00% | Reduce -25.6% | 130,321 | $2.9M |
| Ameriprise Financial Inc. | 0.00% | Reduce -23.7% | 128,720 | $2.8M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -6.5% | 128,660 | $2.8M |
| Raymond James Financial Inc. | 0.00% | Reduce -12.2% | 120,169 | $2.6M |
| PDT Partners, LLC | 0.16% | Reduce -35.2% | 110,385 | $2.4M |
| Algert Global LLC | 0.04% | Reduce -52.0% | 108,939 | $2.4M |
| Tudor Investment Corporation | 0.01% | New | 108,063 | $2.4M |
| Sei Investments Co. | 0.00% | Reduce -50.6% | 106,598 | $2.3M |
| Trexquant Investment LP | 0.02% | Reduce -79.4% | 102,719 | $2.3M |
| Wellington Management Group LLP | 0.00% | New | 98,309 | $2.2M |
| Banque Pictet & Cie SA | 0.02% | Add +29.6% | 97,187 | $2.1M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.00% | Reduce -9.4% | 89,094 | $2.0M |
| Engineers Gate Manager LP | 0.02% | New | 88,547 | $1.9M |
| Wells Fargo & Company | 0.00% | Add +61.8% | 84,411 | $1.9M |
| Y-Intercept (Hong Kong) Ltd | 0.04% | Add +47.5% | 83,986 | $1.8M |
| Cerity Partners LLC | 0.00% | Add +0.6% | 76,771 | $1.7M |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +245.1% | 74,015 | $1.6M |
| Legato Capital Management LLC | 0.14% | New | 72,580 | $1.6M |
| Formula Growth Ltd. | 0.60% | Reduce -41.9% | 70,919 | $1.6M |
| New York State Teachers Retirement System | 0.00% | No change | 68,300 | $1.5M |
| Susquehanna Portfolio Strategies, LLC | 0.02% | Reduce -67.8% | 66,452 | $1.5M |
| Prudential Financial Inc. | 0.00% | Reduce -6.4% | 65,014 | $1.4M |
| California State Teachers Retirement System | 0.00% | Add +6.3% | 64,411 | $1.4M |
| Rice Hall James & Associates, LLC | 0.08% | Reduce -39.1% | 62,415 | $1.4M |
| SG Americas Securities, LLC | 0.00% | Reduce -1.7% | 61,958 | $1.4M |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -2.0% | 61,443 | $1.4M |
| Group One Trading LLC | 0.04% | Reduce -28.4% | 60,736 | $1.3M |
| Natixis Advisors, LLC | 0.00% | Add +1.1% | 57,021 | $1.3M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -13.7% | 56,809 | $1.2M |
| CANADA LIFE ASSURANCE Co | 0.00% | No change | 56,332 | $1.2M |
| Norges Bank | 0.00% | — | 54,306 | $1.2M |
| Deutsche Bank AG | 0.00% | Reduce -1.0% | 54,230 | $1.2M |
| Thrivent Financial for Lutherans | 0.00% | Reduce -4.4% | 46,589 | $1.0M |
| Nierenberg Investment Management Company, LLC | 0.49% | New | 44,555 | $979K |
| WINTON GROUP Ltd | 0.03% | New | 44,244 | $972K |
| State of Wisconsin Investment Board | 0.00% | Reduce -33.4% | 43,090 | $947K |
| Jump Financial, LLC | 0.01% | Reduce -65.0% | 41,416 | $910K |
| Orion Porfolio Solutions, LLC | 0.01% | Reduce -7.7% | 40,579 | $892K |
| LPL Financial LLC | 0.00% | Add +1.8% | 39,590 | $870K |
| MetLife Investment Management, LLC | 0.00% | No change | 39,091 | $859K |
| State of Alaska, Department of Revenue | 0.01% | Add +1.4% | 38,676 | $849K |
| Capital Fund Management S.A. | 0.01% | Reduce -77.6% | 38,400 | $844K |
| Oppenheimer Asset Management Inc. | 0.01% | Reduce -8.6% | 37,940 | $834K |
| HSBC Holdings PLC | 0.00% | Reduce -60.7% | 36,553 | $810K |
| AlphaQuest LLC | 0.04% | Add +55.5% | 35,634 | $783K |
| Mariner, LLC | 0.00% | Add +43.2% | 35,529 | $781K |
| HighMark Wealth Management LLC | 0.31% | Add +49.0% | 35,120 | $772K |
| Summit Trail Advisors, LLC | 0.01% | Reduce -65.9% | 34,529 | $759K |
| Brevan Howard Capital Management LP | 0.02% | Reduce -73.1% | 34,091 | $749K |
| Quantbot Technologies LP | 0.02% | Reduce -1.7% | 32,956 | $724K |
| American Century Companies Inc. | 0.00% | Add +0.0% | 32,760 | $720K |
| State of Wyoming | 0.08% | Add +111.4% | 31,798 | $699K |
| Gsa Capital Partners LLP | 0.06% | Reduce -68.5% | 31,184 | $685K |
| Louisiana State Employees Retirement System | 0.01% | No change | 31,100 | $684K |
| Janus Henderson Group PLC | 0.00% | No change | 29,811 | $655K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -6.0% | 29,720 | $653K |
| Amundi | 0.00% | Add +167.2% | 29,445 | $647K |
| Truist Financial Corp. | 0.00% | Reduce -75.6% | 28,171 | $619K |
| Franklin Resources Inc. | 0.00% | Reduce -31.6% | 27,897 | $613K |
| Stifel Financial Corp. | 0.00% | Reduce -29.6% | 27,485 | $604K |
| Bayforest Capital Ltd | 0.45% | Add +42.0% | 27,409 | $602K |
| Intech Investment Management LLC | 0.01% | Reduce -62.8% | 27,371 | $602K |
| Ieq Capital, LLC | 0.00% | New | 27,178 | $597K |
| Deerfield Management Company, L.P. | 0.01% | Add +113.9% | 26,090 | $573K |
| VIRGINIA RETIREMENT SYSTEMS ET Al | 0.00% | Reduce -33.2% | 24,700 | $543K |
| Cwm, LLC | 0.00% | Add +11.2% | 24,449 | $537K |
| Advisors Asset Management, Inc. | 0.01% | Reduce -2.2% | 23,776 | $523K |
| Counterpoint Mutual Funds LLC | 0.04% | Reduce -45.9% | 22,858 | $502K |
| PNC Financial Services Group, Inc. | 0.00% | Add +5.6% | 22,347 | $491K |
| Comerica Bank | 0.00% | Reduce -16.1% | 21,445 | $471K |
| Inspire Investing, LLC | 0.04% | Reduce -45.2% | 21,066 | $463K |
| Wealth Enhancement Advisory Services, LLC | 0.00% | Add +23.9% | 18,693 | $440K |
| New York State Common Retirement Fund | 0.00% | No change | 19,948 | $438K |
| Amalgamated Bank | 0.00% | Add +0.1% | 19,640 | $432K |
| Diversified Trust Co. | 0.01% | Add +6.7% | 19,558 | $430K |
| PharVision Advisers, LLC | 0.22% | Reduce -12.2% | 19,554 | $430K |
| Corient Private Wealth LP | 0.00% | New | 19,535 | $429K |
| State of Tennessee, Department of Treasury | 0.00% | Reduce -33.4% | 21,514 | $428K |
| Arizona State Retirement System | 0.00% | Reduce -4.0% | 18,897 | $415K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 18,552 | $408K |
| Bank of Montreal | 0.00% | Reduce -46.8% | 18,522 | $407K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 18,505 | $407K |
| Citigroup Inc. | 0.00% | Reduce -36.3% | 18,368 | $404K |
| Yousif Capital Management, LLC | 0.00% | Reduce -11.9% | 18,781 | $385K |
| OP Asset Management Ltd | 0.00% | No change | 17,114 | $376K |
| Teachers Retirement System of the State of Kentucky | 0.00% | Reduce -11.3% | 16,851 | $371K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.00% | Reduce -2.5% | 16,786 | $369K |
| Commerce Bank | 0.00% | Reduce -0.8% | 16,632 | $366K |
| Holocene Advisors, LP | 0.00% | New | 16,418 | $361K |
| Neuberger Berman Group LLC | 0.00% | Add +5.8% | 15,978 | $351K |
| Oregon Public Employees Retirement Fund | 0.00% | Add +1.5% | 15,505 | $341K |
| Greenwood Capital Associates LLC | 0.04% | New | 15,350 | $337K |
| Caprock Group, LLC | 0.01% | Reduce -66.6% | 14,831 | $326K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -89.8% | 14,590 | $321K |
| KLP Kapitalforvaltning As | 0.00% | Add +7.4% | 14,500 | $319K |
| MN Wealth Advisors, LLC | 0.15% | Reduce -21.0% | 13,770 | $303K |
| 180 Wealth Advisors, LLC | 0.03% | Add +29.3% | 13,443 | $295K |
| ProShare Advisors LLC | 0.00% | Add +4.6% | 13,185 | $290K |
| Captrust Financial Advisors | 0.00% | Add +7.0% | 13,111 | $288K |
| Tower Research Capital LLC (TRC) | 0.01% | Add +549.6% | 13,058 | $287K |
| Man Group plc | 0.00% | New | 12,782 | $281K |
| Fox Run Management, L.L.C. | 0.04% | New | 11,398 | $251K |
| Mercer Global Advisors Inc. | 0.00% | New | 11,294 | $248K |
| Guggenheim Capital LLC | 0.00% | Add +4.3% | 11,154 | $245K |
| Lighthouse Investment Partners, LLC | 0.01% | New | 11,000 | $242K |
| Apollon Wealth Management, LLC | 0.00% | Reduce -2.7% | 10,958 | $241K |
| Cetera Investment Advisers | 0.00% | Reduce -21.5% | 10,937 | $240K |
| Verition Fund Management LLC | 0.00% | Reduce -54.1% | 10,587 | $233K |
| Prosperitas Financial LLC | 0.09% | New | 10,000 | $220K |
| EP Wealth Advisors, LLC | 0.00% | — | 9,977 | $219K |
| Maryland State Retirement & Pension System | 0.00% | New | 9,855 | $217K |
| Victory Capital Management Inc. | 0.00% | New | 9,771 | $215K |
| Focus Partners Wealth | 0.00% | New | 9,546 | $210K |
| Creative Planning | 0.00% | Reduce -7.9% | 9,478 | $208K |
| EntryPoint Capital, LLC | 0.08% | New | 9,477 | $208K |
| Fiduciary Trust Co | 0.00% | New | 9,447 | $208K |
| Park Avenue Securities LLC | 0.00% | New | 9,403 | $207K |
| Walleye Trading LLC | 0.00% | Add +31.5% | 9,358 | $206K |
| China Universal Asset Management Co., Ltd. | 0.01% | No change | 8,000 | $176K |
| Leonteq Securities AG | 0.01% | Reduce -29.3% | 7,806 | $172K |
| Public Employees Retirement Association of Colorado | 0.00% | No change | 7,650 | $168K |
| CoreCap Advisors, LLC | 0.00% | Add +24.4% | 5,909 | $130K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 5,586 | $123K |
| Ensign Peak Advisors, Inc | 0.00% | Reduce -70.7% | 5,032 | $111K |
| GAMMA Investing LLC | 0.01% | Add +308.1% | 4,542 | $100K |
| Farther Finance Advisors, LLC | 0.00% | Add +36.6% | 3,600 | $79K |
| Creative Financial Designs Inc. | 0.00% | Add +36.0% | 3,431 | $75K |
| Van Eck Associates Corp. | 0.00% | Add +67.4% | 3,430 | $75K |
| Pinnacle Wealth Planning Services, Inc. | 0.01% | New | 3,007 | $66K |
| Essential Partners LLC | 0.02% | Add +0.9% | 2,887 | $63K |
| Osaic Holdings, Inc. | 0.00% | Reduce -69.2% | 2,616 | $57K |
| Stonehage Fleming Financial Services Holdings Ltd | 0.00% | No change | 2,551 | $56K |
| US Bancorp \de | 0.00% | Reduce -14.3% | 2,019 | $44K |
| KBC Group NV | 0.00% | Reduce -99.0% | 2,011 | $44K |
| Assetmark, Inc. | 0.00% | No change | 1,750 | $38K |
| AdvisorNet Financial, Inc | 0.00% | No change | 1,680 | $37K |
| First Horizon Corp. | 0.00% | Add +36.0% | 1,624 | $36K |
| McIlrath & Eck, LLC | 0.00% | No change | 1,605 | $35K |
| Jones Financial Companies LLLP | 0.00% | Add +19.1% | 1,562 | $34K |
| Quarry LP | 0.01% | Reduce -61.1% | 1,437 | $32K |
| Smartleaf Asset Management LLC | 0.00% | Add +80.5% | 1,330 | $30K |
| Nisa Investment Advisors, LLC | 0.00% | Add +49.2% | 1,335 | $29K |
| EverSource Wealth Advisors, LLC | 0.00% | Add +81.5% | 1,051 | $23K |
| Fifth Third Bancorp | 0.00% | Add +16.2% | 1,039 | $23K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.00% | Add +38.3% | 979 | $22K |
| Wellington-Altus USA Inc. | 0.01% | — | 808 | $18K |
| Hantz Financial Services, Inc. | 0.00% | Add +1834.2% | 735 | $16K |
| Northwestern Mutual Wealth Management Co. | 0.00% | Add +116.4% | 686 | $15K |
| Covestor Ltd | 0.01% | No change | 696 | $15K |
| Rockefeller Capital Management L.P. | 0.00% | Add +56.0% | 627 | $14K |
| Salomon & Ludwin, LLC | 0.00% | Reduce -1.5% | 595 | $14K |
| Global Retirement Partners, LLC | 0.00% | No change | 600 | $13K |
| Quadrant Capital Group LLC | 0.00% | Reduce -49.8% | 568 | $12K |
| Allworth Financial LP | 0.00% | Add +88.8% | 542 | $12K |
| Arax Advisory Partners | 0.00% | Reduce -93.0% | 498 | $11K |
| Quent Capital, LLC | 0.00% | Reduce -11.6% | 457 | $10K |
| Sterling Capital Management LLC | 0.00% | Add +174.1% | 444 | $10K |
| Summit Securities Group LLC | 0.00% | New | 432 | $9K |
| Caitong International Asset Management Co., Ltd | 0.00% | Reduce -80.5% | 431 | $9K |
| Transamerica Financial Advisors, LLC | 0.00% | No change | 389 | $9K |
| Torren Management, LLC | 0.00% | — | 379 | $8K |
| Versant Capital Management, Inc | 0.00% | Add +14.9% | 377 | $8K |
| UMB Bank, n.a. | 0.00% | Add +1470.8% | 377 | $8K |
| Ancora Advisors LLC | 0.00% | New | 360 | $8K |
| Signaturefd, LLC | 0.00% | Add +49.6% | 347 | $8K |
| Larson Financial Group LLC | 0.00% | Add +192.0% | 292 | $6K |
| Los Angeles Capital Management LLC | 0.00% | New | 348 | $5K |
| Harbour Investments, Inc. | 0.00% | No change | 204 | $4K |
| MAI Capital Management | 0.00% | Add +23.7% | 141 | $3K |
| Colonial Trust Co / SC | 0.00% | New | 128 | $3K |
| Rothschild Investment LLC | 0.00% | Add +392.0% | 123 | $3K |
| NFSG Corp | 0.00% | Reduce -62.5% | 120 | $3K |
| Front Row Advisors LLC | 0.00% | No change | 100 | $2K |
| Toth Financial Advisory Corp. | 0.00% | No change | 100 | $2K |
| NewEdge Advisors, LLC | 0.00% | No change | 100 | $2K |
| Fortitude Family Office, LLC | 0.00% | New | 97 | $2K |
| Bessemer Group Inc. | 0.00% | Add +5.9% | 90 | $2K |
| Elequin Capital, LP | 0.00% | New | 90 | $2K |
| Golden State Wealth Management, LLC | 0.00% | Add +95.1% | 80 | $2K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 75 | $2K |
| IFP Advisors, Inc | 0.00% | Add +6.2% | 69 | $2K |
| True Wealth Design, LLC | 0.00% | Add +52.3% | 67 | $1K |
| Parallel Advisors, LLC | 0.00% | Add +182.6% | 65 | $1K |
| Bare Financial Services, Inc | 0.00% | Add +52.4% | 64 | $1K |
| MassMutual Private Wealth & Trust, FSB | 0.00% | New | 64 | $1K |
| TD Private Client Wealth LLC | 0.00% | New | 60 | $1K |
| Parkside Financial Bank & Trust | 0.00% | Add +133.3% | 56 | $1K |
| Farmers & Merchants Investments Inc. | 0.00% | No change | 50 | $1K |
| Flagship Harbor Advisors, LLC | 0.00% | New | 49 | $1K |
| ORG Partners LLC | 0.00% | New | 40 | $879 |
| Bell Investment Advisors, Inc | 0.00% | Add +800.0% | 36 | $792 |
| Cornerstone Planning Group LLC | 0.00% | Reduce -67.5% | 40 | $764 |
| Eastern Bank | 0.00% | No change | 32 | $703 |
| Basecamp Wealth Advisors LLC | 0.00% | — | 25 | $550 |
| Federated Hermes, Inc. | 0.00% | New | 25 | $550 |
| CIBC Private Wealth Group LLC | 0.00% | Add +250.0% | 21 | $462 |
| Cedar Mountain Advisors, LLC | 0.00% | New | 20 | $440 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -20.0% | 20 | $440 |
| JFS Wealth Advisors, LLC | 0.00% | No change | 15 | $330 |
| International Assets Investment Management, LLC | 0.00% | New | 15 | $330 |
| Ankerstar Wealth, LLC | 0.00% | — | 11 | $242 |
| SJS Investment Consulting Inc. | 0.00% | New | 11 | $242 |
| Nemes Rush Group LLC | 0.00% | New | 8 | $176 |
| Abound Wealth Management | 0.00% | No change | 6 | $132 |
| Gilpin Wealth Management, LLC | 0.00% | — | 5 | $110 |
| Huntington National Bank | 0.00% | No change | 1 | $22 |
| Dunhill Financial, LLC | 0.00% | New | 1 | $19 |
"% of holder's portfolio" is TNDM's weight in each manager's 13F, not the share of Tandem Diabetes Care Inc. the manager owns.