Fund shareholders of Tandem Diabetes Care Inc
ISIN US8753722037 · United States · LEI 549300JEPFOD0K4D3I05
- Fund shareholders
- 216
- Of which ETFs
- 52 164 other funds
- Value held
- 530.6M $
- Share of capital
- 37.9 % of 69.6M shares on Aug 3, 2026
216 funds hold this company. This table lists the 214 that declare it in a regulatory filing. The other 2 publish their holdings in their own reports. They are not in the table.
| Fund | Shares | Value | Weight in fund | Share of capital | |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF iShares Trust | 4,069,020 | 78M $ | 0.08 % | 5.85 % | as of Mar 31, 2026 ↗ |
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 2,158,001 | 41.4M $ | 0.00 % | 3.10 % | as of Mar 31, 2026 ↗ |
| iShares Russell 2000 ETF iShares Trust | 1,658,997 | 31.8M $ | 0.04 % | 2.38 % | as of Mar 31, 2026 ↗ |
| VANGUARD SMALL-CAP INDEX FUND VANGUARD INDEX FUNDS | 1,574,340 | 30.2M $ | 0.02 % | 2.26 % | as of Mar 31, 2026 ↗ |
| VANGUARD EXPLORER FUND VANGUARD EXPLORER FUND | 1,158,065 | 22.6M $ | 0.10 % | 1.66 % | as of Apr 30, 2026 ↗ |
| VANGUARD SMALL-CAP GROWTH INDEX FUND VANGUARD INDEX FUNDS | 879,123 | 16.9M $ | 0.04 % | 1.26 % | as of Mar 31, 2026 ↗ |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 756,753 | 14.5M $ | 0.02 % | 1.09 % | as of Mar 31, 2026 ↗ |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 670,692 | 13.1M $ | 0.04 % | 0.96 % | as of Apr 30, 2026 ↗ |
| State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF SPDR SERIES TRUST | 619,097 | 11.9M $ | 0.09 % | 0.89 % | as of Mar 31, 2026 ↗ |
| SMALL COMPANY GROWTH PORTFOLIO VANGUARD VARIABLE INSURANCE FUNDS | 606,317 | 11.6M $ | 0.85 % | 0.87 % | as of Mar 31, 2026 ↗ |
| iShares Russell 2000 Growth ETF iShares Trust | 554,092 | 10.6M $ | 0.09 % | 0.80 % | as of Mar 31, 2026 ↗ |
| Meridian Growth Fund Meridian Fund Inc | 496,572 | 9.5M $ | 1.95 % | 0.71 % | as of Mar 31, 2026 ↗ |
| PGIM Jennison Health Sciences Fund Prudential Sector Funds, Inc. | 496,296 | 12.6M $ | 0.86 % | 0.71 % | as of Feb 27, 2026 ↗ |
| Strategic Advisers Fidelity U.S. Total Stock Fund Fidelity Rutland Square Trust II | 476,900 | 12.1M $ | 0.01 % | 0.69 % | as of Feb 28, 2026 ↗ |
| VANGUARD TAX-MANAGED SMALL-CAP FUND VANGUARD TAX-MANAGED FUNDS | 454,971 | 8.7M $ | 0.09 % | 0.65 % | as of Mar 31, 2026 ↗ |
| Royce Small-Cap Opportunity Fund ROYCE FUND | 358,996 | 6.9M $ | 0.61 % | 0.52 % | as of Mar 31, 2026 ↗ |
| VANGUARD RUSSELL 2000 INDEX FUND VANGUARD SCOTTSDALE FUNDS | 336,003 | 8.5M $ | 0.06 % | 0.48 % | as of Feb 28, 2026 ↗ |
| Schwab U.S. Small-Cap ETF SCHWAB STRATEGIC TRUST | 327,620 | 8.3M $ | 0.04 % | 0.47 % | as of Feb 28, 2026 ↗ |
| iShares S&P Small-Cap 600 Growth ETF iShares Trust | 327,206 | 6.3M $ | 0.10 % | 0.47 % | as of Mar 31, 2026 ↗ |
| Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 316,823 | 8M $ | 0.02 % | 0.46 % | as of Feb 28, 2026 ↗ |
| iShares U.S. Medical Devices ETF iShares Trust | 291,575 | 5.6M $ | 0.18 % | 0.42 % | as of Mar 31, 2026 ↗ |
| iShares S&P Small-Cap 600 Value ETF iShares Trust | 290,539 | 5.6M $ | 0.07 % | 0.42 % | as of Mar 31, 2026 ↗ |
| AMG GW&K Small/Mid Cap Core Fund AMG Funds | 285,887 | 5.5M $ | 0.76 % | 0.41 % | as of Mar 31, 2026 ↗ |
| Meridian Small Cap Growth Fund Meridian Fund Inc | 274,345 | 5.3M $ | 2.23 % | 0.39 % | as of Mar 31, 2026 ↗ |
| AMG GW&K Small Cap Core Fund AMG Funds | 263,924 | 5.1M $ | 0.75 % | 0.38 % | as of Mar 31, 2026 ↗ |
| Driehaus Micro Cap Growth Fund Driehaus Mutual Funds | 254,547 | 4.9M $ | 1.07 % | 0.37 % | as of Mar 31, 2026 ↗ |
| VANGUARD S&P SMALL-CAP 600 INDEX FUND VANGUARD ADMIRAL FUNDS | 232,743 | 5.9M $ | 0.11 % | 0.33 % | as of Feb 28, 2026 ↗ |
| Fidelity Enhanced Small Cap ETF Fidelity Covington Trust | 208,214 | 4M $ | 0.10 % | 0.30 % | as of Mar 31, 2026 ↗ |
| VANGUARD HEALTH CARE INDEX FUND VANGUARD WORLD FUND | 202,104 | 5.1M $ | 0.03 % | 0.29 % | as of Feb 28, 2026 ↗ |
| State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF SPDR SERIES TRUST | 200,298 | 3.8M $ | 0.10 % | 0.29 % | as of Mar 31, 2026 ↗ |
| JPMorgan Small & Mid Cap Enhanced Equity ETF J.P. Morgan Exchange-Traded Fund Trust | 194,519 | 3.7M $ | 0.16 % | 0.28 % | as of Mar 31, 2026 ↗ |
| Mercer US Small/Mid Cap Equity Fund Mercer Funds | 183,108 | 3.5M $ | 0.20 % | 0.26 % | as of Mar 31, 2026 ↗ |
| First Trust Small Cap Growth AlphaDEX Fund First Trust Exchange-Traded AlphaDEX Fund | 179,298 | 3.5M $ | 0.33 % | 0.26 % | as of Apr 30, 2026 ↗ |
| BlackRock Advantage Small Cap Core Fund BlackRock Funds | 161,215 | 4.1M $ | 0.09 % | 0.23 % | as of Feb 27, 2026 ↗ |
| Meridian Contrarian Fund Meridian Fund Inc | 159,000 | 3M $ | 0.52 % | 0.23 % | as of Mar 31, 2026 ↗ |
| State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF SPDR SERIES TRUST | 155,616 | 3M $ | 0.07 % | 0.22 % | as of Mar 31, 2026 ↗ |
| Schwab Small-Cap Index Fund SCHWAB CAPITAL TRUST | 149,029 | 2.9M $ | 0.04 % | 0.21 % | as of Apr 30, 2026 ↗ |
| Strategic Advisers U.S. Total Stock Fund Fidelity Rutland Square Trust II | 134,632 | 3.4M $ | 0.00 % | 0.19 % | as of Feb 28, 2026 ↗ |
| Fidelity Total Market Index Fund Fidelity Concord Street Trust | 125,728 | 3.2M $ | 0.00 % | 0.18 % | as of Feb 28, 2026 ↗ |
| Invesco RAFI US 1500 Small-Mid ETF Invesco Exchange-Traded Fund Trust | 125,578 | 2.5M $ | 0.09 % | 0.18 % | as of Apr 30, 2026 ↗ |
| Adara Smaller Companies Fund RBB Fund, Inc. | 122,678 | 3.1M $ | 0.41 % | 0.18 % | as of Feb 28, 2026 ↗ |
| VANGUARD GROWTH AND INCOME FUND VANGUARD QUANTITATIVE FUNDS | 117,671 | 2.3M $ | 0.01 % | 0.17 % | as of Mar 31, 2026 ↗ |
| Nuveen Quant Small/Mid Cap Equity Fund TIAA-CREF Funds | 110,920 | 2.2M $ | 0.08 % | 0.16 % | as of Apr 30, 2026 ↗ |
| Master Small Cap Index Series Quantitative Master Series LLC | 109,674 | 2.1M $ | 0.04 % | 0.16 % | as of Mar 31, 2026 ↗ |
| Columbia Small Cap Index Fund COLUMBIA FUNDS SERIES TRUST | 107,923 | 2.7M $ | 0.11 % | 0.16 % | as of Feb 28, 2026 ↗ |
| State Street(R) SPDR(R) S&P(R) Health Care Equipment ETF SPDR SERIES TRUST | 106,129 | 2M $ | 1.51 % | 0.15 % | as of Mar 31, 2026 ↗ |
| JNL Small Cap Index Fund JNL Series Trust | 104,021 | 2M $ | 0.08 % | 0.15 % | as of Mar 31, 2026 ↗ |
| Fidelity Series Total Market Index Fund Fidelity Concord Street Trust | 100,677 | 2.5M $ | 0.00 % | 0.14 % | as of Feb 28, 2026 ↗ |
| College Retirement Equities Fund - Total Global Stock Account College Retirement Equities Fund | 89,900 | 1.7M $ | 0.00 % | 0.13 % | as of Mar 31, 2026 ↗ |
| iShares Core S&P Total U.S. Stock Market ETF iShares Trust | 85,135 | 1.6M $ | 0.00 % | 0.12 % | as of Mar 31, 2026 ↗ |
| Nuveen Small Cap Blend Index Fund TIAA-CREF Funds | 81,348 | 1.6M $ | 0.04 % | 0.12 % | as of Apr 30, 2026 ↗ |
| First Trust Small Cap Core AlphaDEX Fund First Trust Exchange-Traded AlphaDEX Fund | 72,238 | 1.4M $ | 0.12 % | 0.10 % | as of Apr 30, 2026 ↗ |
| EQ/2000 Managed Volatility Portfolio EQ Advisors Trust | 70,095 | 1.3M $ | 0.04 % | 0.10 % | as of Mar 31, 2026 ↗ |
| Voya MI Dynamic Small Cap Fund Voya Equity Trust | 68,339 | 1.7M $ | 1.03 % | 0.10 % | as of Feb 28, 2026 ↗ |
| VANGUARD S&P SMALL-CAP 600 VALUE INDEX FUND VANGUARD ADMIRAL FUNDS | 65,625 | 1.7M $ | 0.10 % | 0.09 % | as of Feb 28, 2026 ↗ |
| VOYA SMALL COMPANY PORTFOLIO Voya VARIABLE PORTFOLIOS INC | 62,608 | 1.2M $ | 0.66 % | 0.09 % | as of Mar 31, 2026 ↗ |
| VANGUARD RUSSELL 2000 GROWTH INDEX FUND VANGUARD SCOTTSDALE FUNDS | 62,042 | 1.6M $ | 0.11 % | 0.09 % | as of Feb 28, 2026 ↗ |
| iShares ESG Aware MSCI USA Small-Cap ETF iShares Trust | 59,718 | 1.5M $ | 0.06 % | 0.09 % | as of Feb 28, 2026 ↗ |
| M Capital Appreciation Fund M FUND INC | 59,711 | 1.1M $ | 0.44 % | 0.09 % | as of Mar 31, 2026 ↗ |
| PSF Small-Cap Stock Index Portfolio Prudential Series Fund | 57,844 | 1.1M $ | 0.08 % | 0.08 % | as of Mar 31, 2026 ↗ |
| Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Goldman Sachs ETF Trust | 56,884 | 1.4M $ | 0.16 % | 0.08 % | as of Feb 28, 2026 ↗ |
| Invesco S&P SmallCap Health Care ETF Invesco Exchange-Traded Fund Trust II | 56,440 | 1.4M $ | 1.02 % | 0.08 % | as of Feb 28, 2026 ↗ |
| PACE Small/Medium Co Growth Equity Investments PACE SELECT ADVISORS TRUST | 54,909 | 1.1M $ | 0.42 % | 0.08 % | as of Apr 30, 2026 ↗ |
| SmallCap S&P 600 Index Fund Principal Funds, Inc | 53,294 | 1M $ | 0.08 % | 0.08 % | as of Apr 30, 2026 ↗ |
| Invesco S&P SmallCap 600 Revenue ETF Invesco Exchange-Traded Fund Trust II | 52,661 | 1.3M $ | 0.08 % | 0.08 % | as of Feb 28, 2026 ↗ |
| Fidelity Small Cap Growth Index Fund Fidelity Salem Street Trust | 51,555 | 988.3K $ | 0.09 % | 0.07 % | as of Mar 31, 2026 ↗ |
| Nuveen Equity Index Fund TIAA-CREF Funds | 51,545 | 1M $ | 0.00 % | 0.07 % | as of Apr 30, 2026 ↗ |
| VANGUARD TOTAL WORLD STOCK INDEX FUND VANGUARD INTERNATIONAL EQUITY INDEX FUNDS | 51,157 | 998.8K $ | 0.00 % | 0.07 % | as of Apr 30, 2026 ↗ |
| Federated Hermes MDT Small Cap Growth Fund Federated Hermes MDT Series | 50,056 | 977.3K $ | 0.13 % | 0.07 % | as of Apr 30, 2026 ↗ |
| Federated Hermes MDT Small Cap Core Fund Federated Hermes MDT Series | 49,696 | 970.3K $ | 0.05 % | 0.07 % | as of Apr 30, 2026 ↗ |
| Empower S&P Small Cap 600 Index Fund EMPOWER FUNDS, INC. | 47,468 | 910K $ | 0.08 % | 0.07 % | as of Mar 31, 2026 ↗ |
| JPMorgan U.S. Small Company Fund JPMorgan Trust I | 47,386 | 908.4K $ | 0.10 % | 0.07 % | as of Mar 31, 2026 ↗ |
| Destinations Small-Mid Cap Equity Fund Brinker Capital Destinations Trust | 46,934 | 1.2M $ | 0.16 % | 0.07 % | as of Feb 28, 2026 ↗ |
| LVIP SSGA Small-Cap Index Fund LINCOLN VARIABLE INSURANCE PRODUCTS TRUST | 45,900 | 879.9K $ | 0.05 % | 0.07 % | as of Mar 31, 2026 ↗ |
| THRIVENT SMALL CAP INDEX PORTFOLIO Thrivent Series Fund, Inc. | 45,256 | 867.6K $ | 0.08 % | 0.07 % | as of Mar 31, 2026 ↗ |
| Fidelity Nasdaq Composite Index Fund Fidelity Concord Street Trust | 45,195 | 1.1M $ | 0.01 % | 0.06 % | as of Feb 28, 2026 ↗ |
| VANGUARD S&P SMALL-CAP 600 GROWTH INDEX FUND VANGUARD ADMIRAL FUNDS | 42,379 | 1.1M $ | 0.12 % | 0.06 % | as of Feb 28, 2026 ↗ |
| Schwab Total Stock Market Index Fund SCHWAB CAPITAL TRUST | 41,337 | 807.1K $ | 0.00 % | 0.06 % | as of Apr 30, 2026 ↗ |
| Schwab U.S. Broad Market ETF SCHWAB STRATEGIC TRUST | 39,205 | 991.9K $ | 0.00 % | 0.06 % | as of Feb 28, 2026 ↗ |
| VANGUARD BALANCED INDEX FUND VANGUARD VALLEY FORGE FUNDS | 38,567 | 739.3K $ | 0.00 % | 0.06 % | as of Mar 31, 2026 ↗ |
| EQ/Small Company Index Portfolio EQ Advisors Trust | 36,370 | 697.2K $ | 0.04 % | 0.05 % | as of Mar 31, 2026 ↗ |
| Fidelity ZERO Total Market Index Fund Fidelity Concord Street Trust | 34,660 | 676.7K $ | 0.00 % | 0.05 % | as of Apr 30, 2026 ↗ |
| Bridge Builder Small/Mid Cap Growth Fund Bridge Builder Trust | 34,546 | 662.2K $ | 0.01 % | 0.05 % | as of Mar 31, 2026 ↗ |
| VOYA SMALLCAP OPPORTUNITIES PORTFOLIO Voya Variable Products Trust | 33,834 | 648.6K $ | 0.39 % | 0.05 % | as of Mar 31, 2026 ↗ |
| BNY Mellon Smallcap Stock Index Fund BNY MELLON INDEX FUNDS, INC. | 33,617 | 656.4K $ | 0.08 % | 0.05 % | as of Apr 30, 2026 ↗ |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND VANGUARD INSTITUTIONAL INDEX FUNDS | 33,106 | 634.6K $ | 0.00 % | 0.05 % | as of Mar 31, 2026 ↗ |
| Small Company Fund American Century Quantitative Equity Funds, Inc. | 32,370 | 620.5K $ | 0.39 % | 0.05 % | as of Mar 31, 2026 ↗ |
| Fidelity MSCI Health Care Index ETF FIDELITY COVINGTON TRUST | 31,511 | 615.3K $ | 0.02 % | 0.05 % | as of Apr 30, 2026 ↗ |
| Small Cap Index Fund Northern Funds | 30,925 | 592.8K $ | 0.04 % | 0.04 % | as of Mar 31, 2026 ↗ |
| U.S. Small Cap Equity Fund RUSSELL INVESTMENT CO | 29,805 | 581.9K $ | 0.06 % | 0.04 % | as of Apr 30, 2026 ↗ |
| Catholic Responsible Investments Small-Cap Fund Catholic Responsible Investments Funds | 29,672 | 579.3K $ | 0.09 % | 0.04 % | as of Apr 30, 2026 ↗ |
| Global X Russell 2000 ETF GLOBAL X FUNDS | 29,414 | 574.3K $ | 0.04 % | 0.04 % | as of Apr 30, 2026 ↗ |
| VANGUARD STRATEGIC SMALL-CAP EQUITY FUND VANGUARD HORIZON FUNDS | 28,801 | 552.1K $ | 0.02 % | 0.04 % | as of Mar 31, 2026 ↗ |
| Small Cap Index Fund VALIC Co I | 26,733 | 676.3K $ | 0.05 % | 0.04 % | as of Feb 28, 2026 ↗ |
| BlackRock Advantage Small Cap Growth Fund BlackRock Funds | 25,940 | 497.3K $ | 0.07 % | 0.04 % | as of Mar 31, 2026 ↗ |
| Clearwater Select Equity Fund Clearwater Investment Trust | 25,796 | 494.5K $ | 0.11 % | 0.04 % | as of Mar 31, 2026 ↗ |
| Keeley Small Cap Fund Teton Westwood Funds | 25,000 | 479.3K $ | 0.56 % | 0.04 % | as of Mar 31, 2026 ↗ |
| EQ/AB Small Cap Growth Portfolio EQ Advisors Trust | 24,740 | 474.3K $ | 0.03 % | 0.04 % | as of Mar 31, 2026 ↗ |
| Goldman Sachs Multi-Manager Global Equity Fund Goldman Sachs Trust II | 24,668 | 481.6K $ | 0.03 % | 0.04 % | as of Apr 30, 2026 ↗ |
| Fidelity ZERO Extended Market Index Fund Fidelity Concord Street Trust | 23,737 | 463.5K $ | 0.02 % | 0.03 % | as of Apr 30, 2026 ↗ |
The funds most exposed to it
The weight is the share of a fund's net assets. The holders table ranks funds by number of shares. This one ranks them by the weight of the company in each fund.
| Fund | Weight in fund | |
|---|---|---|
| Meridian Small Cap Growth Fund Meridian Fund Inc | 2.23 % | as of Mar 31, 2026 ↗ |
| Meridian Growth Fund Meridian Fund Inc | 1.95 % | as of Mar 31, 2026 ↗ |
| Global X HealthTech ETF GLOBAL X FUNDS | 1.62 % | as of Feb 28, 2026 ↗ |
| State Street(R) SPDR(R) S&P(R) Health Care Equipment ETF SPDR SERIES TRUST | 1.51 % | as of Mar 31, 2026 ↗ |
| Edmond de Rothschild Fund - Healthcare Edmond de Rothschild Asset Management (Luxembourg) | 1.13 % | as of Mar 31, 2025 ↗ |
| Driehaus Micro Cap Growth Fund Driehaus Mutual Funds | 1.07 % | as of Mar 31, 2026 ↗ |
| Voya MI Dynamic Small Cap Fund Voya Equity Trust | 1.03 % | as of Feb 28, 2026 ↗ |
| Invesco S&P SmallCap Health Care ETF Invesco Exchange-Traded Fund Trust II | 1.02 % | as of Feb 28, 2026 ↗ |
| PGIM Jennison Health Sciences Fund Prudential Sector Funds, Inc. | 0.86 % | as of Feb 27, 2026 ↗ |
| SMALL COMPANY GROWTH PORTFOLIO VANGUARD VARIABLE INSURANCE FUNDS | 0.85 % | as of Mar 31, 2026 ↗ |
Quarter after quarter
Each row is one quarter of SEC filings, newest first. The change compares each quarter with the one before.
| Quarter | Shareholders | Change | Shares | Change |
|---|---|---|---|---|
| 2026Q2 | 214 | +13 | 26,364,172 | +2.6 % |
| 2026Q1 | 201 | -1 | 25,696,614 | -6.0 % |
| 2025Q4 | 202 | -25 | 27,324,371 | -9.2 % |
| 2025Q3 | 227 | -4 | 30,099,191 | +0.9 % |
| 2025Q2 | 231 | -6 | 29,840,675 | -3.4 % |
| 2025Q1 | 237 | -6 | 30,889,429 | -5.5 % |
| 2024Q4 | 243 | -21 | 32,677,163 | +1.2 % |
| 2024Q3 | 264 | +14 | 32,278,198 | +0.4 % |
| 2024Q2 | 250 | -3 | 32,160,648 | -3.1 % |
| 2024Q1 | 253 | -9 | 33,182,857 | -7.7 % |
| 2023Q4 | 262 | 35,933,508 |
Institutional managers
263 managers declare this company to the SEC (Form 13F). The table shows the 25 largest.
| Manager | Shares | Value | |
|---|---|---|---|
| BlackRock, Inc. | 10,690,844 | 204.9M $ | as of Mar 31, 2026 |
| Sessa Capital IM, L.P. | 4,730,757 | 90.7M $ | as of Mar 31, 2026 |
| ArrowMark Colorado Holdings LLC | 3,103,609 | 59.5M $ | as of Mar 31, 2026 |
| GW&K Investment Management, LLC | 2,689,106 | 51.6K $ | as of Mar 31, 2026 |
| STATE STREET CORP | 2,662,260 | 51M $ | as of Mar 31, 2026 |
| Driehaus Capital Management LLC | 2,304,414 | 44.2M $ | as of Mar 31, 2026 |
| GOLDMAN SACHS GROUP INC | 2,218,922 | 42.5M $ | as of Mar 31, 2026 |
| CITADEL ADVISORS LLC | 2,192,667 | 42M $ | as of Mar 31, 2026 |
| UBS Group AG | 2,047,801 | 39.3M $ | as of Mar 31, 2026 |
| Paradice Investment Management LLC | 2,042,425 | 39.2M $ | as of Mar 31, 2026 |
| TWO SIGMA INVESTMENTS, LP | 1,864,194 | 35.7M $ | as of Mar 31, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | 1,679,863 | 32.2M $ | as of Mar 31, 2026 |
| JENNISON ASSOCIATES LLC | 1,658,448 | 31.8M $ | as of Mar 31, 2026 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 1,523,946 | 29.2M $ | as of Mar 31, 2026 |
| MARSHALL WACE, LLP | 1,442,472 | 27.7M $ | as of Mar 31, 2026 |
| MORGAN STANLEY | 1,357,542 | 26M $ | as of Mar 31, 2026 |
| Freestone Grove Partners LP | 1,330,742 | 25.5M $ | as of Mar 31, 2026 |
| First Light Asset Management, LLC | 1,314,715 | 25.2M $ | as of Mar 31, 2026 |
| BAILLIE GIFFORD & CO | 1,089,393 | 20.9M $ | as of Mar 31, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | 1,042,764 | 20M $ | as of Mar 31, 2026 |
| VOYA INVESTMENT MANAGEMENT LLC | 804,137 | 15.4M $ | as of Mar 31, 2026 |
| D. E. Shaw & Co., Inc. | 783,906 | 15M $ | as of Mar 31, 2026 |
| Soleus Capital Management, L.P. | 783,000 | 15M $ | as of Mar 31, 2026 |
| Defilade Capital Management, L.P. | 761,905 | 14.6M $ | as of Mar 31, 2026 |
| MILLENNIUM MANAGEMENT LLC | 761,672 | 14.6M $ | as of Mar 31, 2026 |
Declared shareholders of Tandem Diabetes Care Inc
There are 3 beneficial ownership filings. These stakes do not add up. An asset manager that files includes its own funds, which already appear among the funds on this page.
| Shareholder | Declared stake | Shares | |
|---|---|---|---|
| Voya Financial, Inc. | 6.30 % | 4,343,683 | as of Mar 31, 2026 · SCHEDULE 13G |
| Vanguard Portfolio Management | 5.91 % | 4,052,274 | as of Mar 31, 2026 · SCHEDULE 13G |
| Vanguard Capital Management | 5.18 % | 3,553,772 | as of Mar 31, 2026 · SCHEDULE 13G |
Funds holding the debt of Tandem Diabetes Care Inc
16 funds declare 18 bond lines of this company. The amount is the one the fund files. It is not a share of the debt, because no regulator publishes the amount outstanding in open access.
| Fund | Bond lines | Value | |
|---|---|---|---|
| Virtus Income & Growth Fund | 1 | 13.7M $ | as of Mar 31, 2026 |
| Calamos Market Neutral Income Fund | 2 | 13.3M $ | as of Apr 30, 2026 |
| Virtus Convertible Fund | 1 | 13M $ | as of Mar 31, 2026 |
| iShares Convertible Bond ETF | 2 | 9.9M $ | as of Apr 30, 2026 |
| Fidelity Convertible Securities Fund | 1 | 2.4M $ | as of Feb 28, 2026 |
| WESTWOOD ALTERNATIVE INCOME FUND | 1 | 2M $ | as of Apr 30, 2026 |
| Voya Global Income & Growth Fund | 1 | 1.3M $ | as of Feb 28, 2026 |
| Fidelity Strategic Dividend and Income Fund | 1 | 1.1M $ | as of Feb 28, 2026 |
| Voya High Yield Portfolio | 1 | 1M $ | as of Mar 31, 2026 |
| Defensive Market Strategies Fund | 1 | 841.6K $ | as of Mar 31, 2026 |
| Voya High Yield Bond Fund | 1 | 718K $ | as of Mar 31, 2026 |
| PACE Alternative Strategies Investments | 1 | 447.3K $ | as of Apr 30, 2026 |
| JNL Multi-Manager Alternative Fund | 1 | 370.6K $ | as of Mar 31, 2026 |
| Franklin Alternative Strategies Fund | 1 | 153.5K $ | as of Feb 27, 2026 |
| Lazard Enhanced Opportunities Portfolio | 1 | 147K $ | as of Mar 31, 2026 |
| Harbor Ares Systematic Convertible Securities Fund | 1 | 88K $ | as of Apr 30, 2026 |
Cite this page
Titelia. "Fund shareholders of Tandem Diabetes Care Inc". https://titelia.com/en/stocks/tandem-diabetes-care-inc-US8753722037