# TANDEM DIABETES CARE INC (TNDM)

> Institutional ownership reported to the SEC as of Q3 2026, from Form 13F filings. Source: https://holderbook.com/stocks/TNDM/

- Reporting holders: 9
- Reported value: $86.7K
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [GAMMA Investing LLC](https://holderbook.com/funds/2010235-gamma-investing-llc/) | $26.2K | 1,605 | 0.0% | 12 |
| [CoreCap Advisors, LLC](https://holderbook.com/funds/1902501-corecap-advisors-llc/) | $19.0K | 1,164 | 0.0% | 9 |
| [Versant Capital Management, Inc](https://holderbook.com/funds/1735057-versant-capital-management-inc/) | $18.1K | 1,111 | 0.0% | 15 |
| [MassMutual Private Wealth & Trust, FSB](https://holderbook.com/funds/1103653-massmutual-private-wealth-trust-fsb/) | $11.5K | 707 | 0.0% | 2 |
| [Farther Finance Advisors, LLC](https://holderbook.com/funds/1992825-farther-finance-advisors-llc/) | $9.6K | 589 | 0.0% | 16 |
| [TOTH FINANCIAL ADVISORY CORP](https://holderbook.com/funds/866780-toth-financial-advisory-corp/) | $1.6K | 100 | 0.0% | 22 |
| [EASTERN BANK](https://holderbook.com/funds/1126395-eastern-bank/) | $522 | 32 | 0.0% | 9 |
| [GILPIN WEALTH MANAGEMENT, LLC](https://holderbook.com/funds/2058144-gilpin-wealth-management-llc/) | $98 | 6 | 0.0% | 4 |
| [Davis Capital Management](https://holderbook.com/funds/1811806-davis-capital-management/) | $65 | 4 | 0.0% | 2 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q3 2026 | 9 | $86.7K |
| Q2 2026 | 280 | $1.4B |
| Q1 2026 | 277 | $1.6B |
| Q4 2025 | 272 | $1.7B |
| Q3 2025 | 257 | $963.4M |
| Q2 2025 | 273 | $1.6B |
| Q1 2025 | 278 | $1.5B |
| Q4 2024 | 318 | $2.7B |
| Q3 2024 | 337 | $3.3B |
| Q2 2024 | 320 | $3.1B |
| Q1 2024 | 295 | $2.9B |
| Q4 2023 | 272 | $2.2B |