# LUCID DIAGNOSTICS INC COM

LUCID DIAGNOSTICS INC COM is a security (CUSIP 54948X109) tracked across SEC portfolio filings. 107 institutional managers reported $40.4M on Form 13F as of 2026-06-30; 10 registered fund positions totaling $6.2M via N-PORT as of 2026-05-31.

## Summary

- Issuer: LUCID DIAGNOSTICS INC
- Class: COM
- CUSIP: 54948X109
- Asset category: EC
- 13F holders: 107
- 13F value: $40.4M
- 13F period: 2026-06-30
- N-PORT fund positions: 10
- N-PORT value: $6.2M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 107 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $5.4M | 4,968,608 |
| BlackRock, Inc. | New York, NY | $5.3M | 4,638,243 |
| [MASTERS CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/137605) | ATLANTA, GA | $4.6M | 4,000,000 |
| Aberdeen Group plc | EDINBURGH, X0 | $4.1M | 3,822,997 |
| Two Seas Capital LP | RYE, NY | $3.5M | 3,000,000 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $2.6M | 2,245,350 |
| STATE STREET CORP | BOSTON, MA | $1.8M | 1,554,581 |
| Russell Investments Group, Ltd. | Seattle, WA | $1.8M | 1,643,731 |
| WELLS FARGO & COMPANY/MN | SAN FRANCISCO, CA | $1.5M | 1,274,390 |
| PERKINS CAPITAL MANAGEMENT INC | WAYZATA, MN | $1.2M | 1,125,000 |
| [Sunbelt Securities, Inc.](https://search.stillhousedata.com/firm/42180) | HOUSTON, TX | $1.0M | 900,013 |
| NORTHERN TRUST CORP | CHICAGO, IL | $771K | 670,585 |
| RAYMOND JAMES FINANCIAL INC | ST. PETERSBURG, FL | $604K | 524,936 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $575K | 499,661 |
| UBS Group AG | Zurich, V8 | $512K | 445,479 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| abrdn Healthcare Opportunities Fund | abrdn Healthcare Opportunities Fund | $4.2M | 58.09% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $1.2M | 0.15% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $474K | 0.27% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $138K | 0.29% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $64K | 0.01% |
| Gabelli Healthcare & WellnessRx Trust | Gabelli Healthcare & WellnessRx Trust | $45K | 3.03% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $32K | 0.01% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $15K | 0.35% |
| Guggenheim Active Allocation Fund | Guggenheim Active Allocation Fund | $40 | 0.00% |
| [Blackstone Alternative Multi-Strategy Fund](https://search.stillhousedata.com/fund/S000045538) | Blackstone Alternative Investment Funds | $-6K | -0.02% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/54948X109.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.