# STANDARD BIOTOOLS INC COM

STANDARD BIOTOOLS INC COM is a security (CUSIP 34385P108) tracked across SEC portfolio filings. 152 institutional managers reported $278.5M on Form 13F as of 2026-06-30; 13 registered fund positions totaling $7.7M via N-PORT as of 2026-05-31.

## Summary

- Issuer: STANDARD BIOTOOLS INC
- Class: COM
- CUSIP: 34385P108
- Asset category: EC
- 13F holders: 152
- 13F value: $278.5M
- 13F period: 2026-06-30
- N-PORT fund positions: 13
- N-PORT value: $7.7M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 152 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Casdin Capital, LLC](https://search.stillhousedata.com/firm/169579) | New York, NY | $81.6M | 88,783,856 |
| [VIKING GLOBAL INVESTORS LP](https://search.stillhousedata.com/firm/132272) | STAMFORD, CT | $53.9M | 58,651,170 |
| [MAK CAPITAL ONE LLC](https://search.stillhousedata.com/firm/158132) | NEW YORK, NY | $24.1M | 26,172,626 |
| BlackRock, Inc. | New York, NY | $22.8M | 24,756,084 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $22.1M | 17,297,599 |
| [Long Focus Capital Management, LLC](https://search.stillhousedata.com/firm/322024) | San Juan, PR | $14.7M | 16,015,721 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $6.7M | 7,289,336 |
| STATE STREET CORP | BOSTON, MA | $6.0M | 6,556,509 |
| [Hollow Brook Wealth Management LLC](https://search.stillhousedata.com/firm/145521) | Katonah, NY | $5.2M | 5,653,381 |
| NEUBERGER BERMAN GROUP LLC | NEW YORK, NY | $4.3M | 4,657,585 |
| Tikvah Management LLC | Charlotte, NC | $3.3M | 3,551,152 |
| [ROYCE & ASSOCIATES LP](https://search.stillhousedata.com/firm/107689) | New York, NY | $2.8M | 3,005,529 |
| MORGAN STANLEY | NEW YORK, NY | $2.7M | 2,887,146 |
| BARCLAYS PLC | LONDON, X0 | $2.4M | 2,617,969 |
| NORTHERN TRUST CORP | CHICAGO, IL | $2.3M | 2,454,235 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $3.3M | 0.40% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $1.7M | 24.94% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $1.7M | 0.97% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $468K | 0.97% |
| [Tarkio Fund](https://search.stillhousedata.com/fund/S000031478) | Clark Fork Trust | $159K | 6.00% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $155K | 0.03% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $145K | 0.05% |
| [Invesco NASDAQ Future Gen 200 ETF](https://search.stillhousedata.com/fund/S000077288) | Invesco Exchange-Traded Fund Trust II | $78K | 41.36% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $39K | 0.92% |
| [TIAA Separate Account VA-1 - Stock Index Account](https://search.stillhousedata.com/fund/S000005098) | TIAA Separate Account VA-1 | $6K | 0.05% |
| Guggenheim Active Allocation Fund | Guggenheim Active Allocation Fund | $522 | 0.01% |
| Weiss Strategic Interval Fund | Weiss Strategic Interval Fund | $199 | 0.00% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $-13K | -0.04% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/34385P108.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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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.