# TANDEM DIABETES CARE INC COM NEW

TANDEM DIABETES CARE INC COM NEW is a security (CUSIP 875372203) tracked across SEC portfolio filings. 288 institutional managers reported $1.5B on Form 13F as of 2026-06-30; 30 registered fund positions totaling $78.6M via N-PORT as of 2026-05-31.

## Summary

- Issuer: TANDEM DIABETES CARE INC
- Class: COM NEW
- CUSIP: 875372203
- Asset category: EC
- 13F holders: 288
- 13F value: $1.5B
- 13F period: 2026-06-30
- N-PORT fund positions: 30
- N-PORT value: $78.6M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 288 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $204.9M | 10,690,844 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $161.4M | 7,341,356 |
| UBS Group AG | Zurich, V8 | $138.5M | 2,047,801 |
| [Sessa Capital IM, L.P.](https://search.stillhousedata.com/firm/166403) | NEW YORK, NY | $90.7M | 4,730,757 |
| [ArrowMark Colorado Holdings LLC](https://search.stillhousedata.com/firm/149120) | Denver, CO | $59.5M | 3,103,609 |
| STATE STREET CORP | BOSTON, MA | $51.0M | 2,662,260 |
| Driehaus Capital Management LLC | Chicago, IL | $44.2M | 2,304,414 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $43.7M | 2,192,667 |
| GOLDMAN SACHS GROUP INC | NEW YORK, NY | $42.5M | 2,218,922 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $35.7M | 1,864,194 |
| [JENNISON ASSOCIATES LLC](https://search.stillhousedata.com/firm/107959) | NEW YORK, NY | $35.2M | 2,331,429 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $32.2M | 1,679,863 |
| [Paradice Investment Management LLC](https://search.stillhousedata.com/firm/164411) | Denver, CO | $30.5M | 2,024,014 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | FLORHAM PARK, NJ | $29.2M | 1,523,946 |
| [MARSHALL WACE, LLP](https://search.stillhousedata.com/firm/160885) | LONDON, X0 | $27.7M | 1,442,472 |

## Top fund holders (N-PORT)

_Showing 15 of 30 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $22.6M | 10.39% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $14.5M | 1.78% |
| [PGIM Jennison Health Sciences Fund](https://search.stillhousedata.com/fund/S000004380) | Prudential Sector Funds, Inc. | $11.7M | 84.23% |
| [Meridian Contrarian Fund](https://search.stillhousedata.com/fund/S000001463) | Meridian Fund Inc | $6.1M | 103.58% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $6.0M | 3.42% |
| abrdn Healthcare Investors | abrdn Healthcare Investors | $5.5M | 48.60% |
| abrdn Healthcare Opportunities Fund | abrdn Healthcare Opportunities Fund | $2.8M | 38.73% |
| [VOYA SMALL COMPANY PORTFOLIO](https://search.stillhousedata.com/fund/S000008709) | Voya VARIABLE PORTFOLIOS INC | $2.4M | 132.09% |
| [VANGUARD GROWTH AND INCOME FUND](https://search.stillhousedata.com/fund/S000002913) | VANGUARD QUANTITATIVE FUNDS | $2.3M | 1.37% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $2.1M | 4.36% |
| [Keeley Small Cap Fund](https://search.stillhousedata.com/fund/S000001085) | Teton Westwood Funds | $959K | 111.66% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $934K | 9.48% |
| [Voya MI Dynamic Small Cap Fund](https://search.stillhousedata.com/fund/S000066937) | Voya Equity Trust | $745K | 39.98% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $739K | 0.13% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $656K | 7.75% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/875372203.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.