Tandem Diabetes Care Ownership | Who Owns Tandem Diabetes Care?
Tandem Diabetes Care Ownership Summary
Tandem Diabetes Care is owned by 6.03% institutional investors, 0.83% insiders, and 93.14% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 17.85% of TNDM shares. iShares Core S&P Small-Cap ETF is the top mutual fund, with 5.93% of its assets in Tandem Diabetes Care shares.
TNDM Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Tandem Diabetes Care | 6.03% | 0.83% | 93.14% |
| Sector | Healthcare Stocks | 279.19% | 10.62% | -189.81% |
| Industry | Medical Device Stocks | 32.77% | 10.51% | 56.72% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock funding, inc. /de | 11.70M | 17.85% | $421.36M |
| Vanguard group | 7.44M | 11.35% | $267.99M |
| Sessa capital im | 4.47M | 6.73% | $85.57M |
| Arrowmark colorado | 2.72M | 4.16% | $98.11M |
| Hood river capital management | 2.31M | 3.48% | $44.30M |
| Gw&k investment management | 2.12M | 3.24% | $76.49M |
| Fred alger management | 1.94M | 2.97% | $70.00M |
| Stephens investment management group | 1.56M | 2.37% | $56.04M |
| Geode capital management | 1.53M | 2.34% | $55.26M |
| Jennison associates | 1.47M | 2.24% | $52.82M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Paradice investment management | 956.41K | 6.83% | $34.45M |
| Beaconlight capital | 331.21K | 4.42% | $11.93M |
| Kingdon capital management | 790.55K | 4.06% | $28.48M |
| Sessa capital im | 4.47M | 3.34% | $85.57M |
| Park west asset management | 1.12M | 1.74% | $21.52M |
| Dafna capital management | 294.21K | 1.60% | $5.64M |
| Arrowmark colorado | 2.72M | 1.32% | $98.11M |
| Formula growth | 123.94K | 0.96% | $2.37M |
| Chicago capital | 970.61K | 0.93% | $34.96M |
| Hood river capital management | 2.31M | 0.76% | $44.30M |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Sessa capital im | 4.47M | 3.34% | 4.47M |
| Hood river capital management | 2.31M | 0.76% | 1.03M |
| Brown advisory | 913.09K | 0.04% | 913.09K |
| Blackrock funding, inc. /de | 11.70M | 0.01% | 587.38K |
| Baillie gifford | 746.11K | 0.02% | 523.84K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Capital world investors | 767.00K | 0.00% | -2.50M |
| Gilder gagnon howe | - | - | -931.89K |
| Janus henderson group | 29.81K | 0.00% | -883.73K |
| Bellevue group | - | - | -782.46K |
| Driehaus capital management | - | - | -777.59K |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Sessa capital im | 4.47M | 3.34% | 4.47M | $85.57M |
| Brown advisory | 913.09K | 0.04% | 913.09K | $32.89M |
| Soleus capital management | 496.04K | 0.68% | 496.04K | $9.50M |
| Raymond james financial | 163.61K | 0.00% | 163.61K | $5.89M |
| Teacher retirement system of texas | 27.57K | 0.00% | 27.57K | $993.00K |
Sold Out
| Holder | Change |
|---|---|
| Mendota financial group | -5.00 |
| Elequin securities | -6.00 |
| Bruce g. allen investments | -8.00 |
| Capital performance advisors llp | -9.00 |
| Cva family office | -11.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Mar 31, 2025 | 8 | -97.58% | 4,001,503 | -94.45% | 6 | 0.05% | 3 | -98.36% | 4 | -95.40% |
| Dec 31, 2024 | 210 | -40.17% | 44,265,510 | -39.39% | 67 | 0.54% | 119 | -29.59% | 53 | -54.70% |
| Sep 30, 2024 | 350 | 4.79% | 73,035,126 | -0.74% | 111 | 0.87% | 169 | -9.14% | 117 | 24.47% |
| Jun 30, 2024 | 334 | 9.15% | 73,578,824 | -0.68% | 113 | 0.88% | 186 | 6.29% | 94 | 13.25% |
| Mar 31, 2024 | 306 | 8.51% | 74,084,784 | 4.67% | 113 | 0.96% | 175 | 10.06% | 83 | -4.60% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 3.95M | 5.93% | -2.32K |
| Vanguard Explorer Inv | 2.25M | 3.38% | 117.60K |
| Vanguard Total Stock Mkt Idx Inv | 2.15M | 3.23% | 77.00K |
| Vanguard US Total Market Shares ETF | 2.08M | 3.13% | 1.77K |
| iShares Russell 2000 ETF | 1.68M | 2.53% | 825.00 |
| Vanguard Small Cap Index | 1.67M | 2.51% | 11.68K |
| Bellevue Healthcare Ord | 1.52M | 2.32% | 1.52M |
| Hood River Small-Cap Growth Instl | 1.39M | 2.09% | 779.52K |
| Stephens SMID Select Growth | 1.11M | 1.67% | 107.00K |
| Vanguard Institutional Extnd Mkt Idx Tr | 1.03M | 1.54% | 1.33K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Mar 07, 2025 | Kyrillos Jean-Claude | EVP & Chief Operating Officer | Buy | $190.97K |
| Nov 20, 2024 | BLICKENSTAFF KIM D | - | Sell | $300.00K |
| Nov 21, 2024 | BLICKENSTAFF KIM D | - | Sell | $941.40K |
| Nov 15, 2024 | Novara Mark David | EVP & CHIEF COMMERCIAL OFFICER | Buy | $12.36K |
| May 30, 2024 | Allen Dick | - | Sell | $258.40K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q2 | - | - |
| 2025 Q1 | 1 | - |
| 2024 Q4 | 1 | 2 |
| 2024 Q3 | - | - |
| 2024 Q2 | - | 1 |
TNDM Ownership FAQ
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