Lucid Diagnostics Inc. (LUCD) Ownership
LUCD ownership summary
as of October 18, 2026- Institutions
- 32.8% of shares outstanding
- Insiders
- 26.50% of shares outstanding
- Shares outstanding
- 190.9M
- Float
- 140.8M shares available to trade
- Short interest
- 9.06% 13.5M shares short
- Days to cover
- 11.71 short interest up 4.9% vs prior month
- Institutions 32.76%
- Insiders 26.50%
- Other investors 40.73%
LUCD top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Alyeska Investment Group, L.P. | 4.64% | 8.9M | $4.2M | +8.9M (0.0%) | June 30, 2026 |
| 2 | BlackRock Inc | 4.38% | 8.4M | $4.0M | +3.7M (+80.5%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 3.43% | 6.6M | $3.1M | +2.4M (+57.8%) | June 30, 2026 |
| 4 | Masters Capital Management LLC | 2.09% | 4.0M | $1.9M | — | June 30, 2026 |
| 5 | Aberdeen Group PLC | 2.00% | 3.8M | $1.8M | +178,720 (+4.9%) | June 30, 2026 |
| 6 | Geode Capital Management, LLC | 1.98% | 3.8M | $1.8M | +1.5M (+68.8%) | June 30, 2026 |
| 7 | Two Seas Capital LP | 1.57% | 3.0M | $1.4M | — | March 31, 2026 |
| 8 | State Street Corp | 1.28% | 2.4M | $1.2M | +882,756 (+56.8%) | June 30, 2026 |
| 9 | First Manhattan Co. LLC | 1.15% | 2.2M | $1.0M | +1.9M (+576.6%) | June 30, 2026 |
| 10 | Wells Fargo & Co | 1.08% | 2.1M | $988,048 | +792,656 (+62.2%) | June 30, 2026 |
| 11 | Northern Trust Corp | 0.64% | 1.2M | $583,102 | +549,294 (+81.9%) | June 30, 2026 |
| 12 | Perkins Capital Management Inc | 0.59% | 1.1M | $537,750 | −1,000 (−0.1%) | June 30, 2026 |
| 13 | Vanguard Fiduciary Trust Co | 0.56% | 1.1M | $510,556 | +444,552 (+71.3%) | June 30, 2026 |
| 14 | Vanguard Portfolio Management, LLC | 0.54% | 1.0M | $488,641 | +493,493 (+93.3%) | June 30, 2026 |
| 15 | Sunbelt Securities | 0.47% | 900K | $430,206 | +516,014 (+134.4%) | March 31, 2026 |
| 16 | UBS Group AG | 0.44% | 845K | $404,060 | +399,835 (+89.8%) | June 30, 2026 |
| 17 | AQR Capital Management LLC | 0.38% | 723K | $345,690 | +488,431 (+208.0%) | June 30, 2026 |
| 18 | Lido Advisors, LLC | 0.23% | 447K | $213,541 | +63,657 (+16.6%) | June 30, 2026 |
| 19 | Charles Schwab Investment Management Inc | 0.17% | 325K | $155,499 | +127,888 (+64.8%) | June 30, 2026 |
| 20 | XML Financial, LLC | 0.17% | 323K | $154,487 | +100,000 (+44.8%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 17 holders added 23.4M shares and 1 cut 1,000.
LUCD top mutual fund and ETF holders
17 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.38% | 4.5M | $2.2M | — | August 31, 2026 |
| 2 | abrdn Healthcare Opportunities | 2.31% | 4.4M | $2.1M | +596,938 (+15.6%) | August 31, 2026 |
| 3 | iShares Russell 2000 ETF | 1.88% | 3.6M | $1.7M | −41,344 (−1.1%) | September 30, 2026 |
| 4 | Fidelity Small Cap Index | 0.83% | 1.6M | $754,490 | −1,945 (−0.1%) | July 31, 2026 |
| 5 | iShares Russell 2000 Growth ETF | 0.74% | 1.4M | $673,472 | −1,783 (−0.1%) | September 30, 2026 |
| 6 | Vanguard Russell 2000 ETF | 0.45% | 852K | $407,201 | +16,920 (+2.0%) | August 31, 2026 |
| 7 | Fidelity Extended Market Index | 0.41% | 786K | $375,731 | −4,224 (−0.5%) | August 31, 2026 |
| 8 | iShares Micro-Cap ETF | 0.26% | 489K | $233,817 | −3,374 (−0.7%) | September 30, 2026 |
| 9 | Schwab Small Cap Index | 0.19% | 363K | $173,449 | — | August 31, 2026 |
| 10 | Fidelity Total Market Index | 0.15% | 296K | $141,314 | — | August 31, 2026 |
| 11 | iShares Russell 2000 Small-Cap Idx Instl | 0.15% | 278K | $132,867 | — | August 31, 2026 |
| 12 | Fidelity Series Total Market Index | 0.12% | 230K | $110,010 | — | August 31, 2026 |
| 13 | Nuveen Small Cap Blend Idx R6 | 0.10% | 195K | $93,241 | — | August 31, 2026 |
| 14 | Vanguard Russell 2000 Growth ETF | 0.08% | 162K | $77,358 | +774 (+0.5%) | August 31, 2026 |
| 15 | EQ/2000 Managed Volatility IB | 0.08% | 155K | $74,043 | — | August 31, 2026 |
| 16 | Fidelity Small Cap Growth Index | 0.08% | 146K | $69,747 | +7,137 (+5.1%) | July 31, 2026 |
| 17 | Xtrackers Russell 2000 ETF 1C | 0.07% | 136K | $65,027 | +5,862 (+4.5%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
LUCD insider transactions
latest 1| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-08-20 | Dennis Matheis | Buy | $1.02 | 100,000 | $102,000 |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
LUCD shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns LUCD
Institutional investors own 32.8% of Lucid Diagnostics's shares and insiders 26.50%. The largest holder is Alyeska Investment Group, L.P. with 4.64% of the shares (8.9M), as of June 30, 2026. Among the top 20 institutions, 17 added shares and 1 reduced their stake in the latest filings. Short interest is 9.06% of the float, or 11.71 days of average trading volume. The share count rose 175.6% since 2018.
Related: LUCD analyst forecast, LUCD key metrics. See the LUCD stock overview for the latest quote and news.
LUCD ownership FAQ
Who owns the most Lucid Diagnostics stock?
The largest shareholders of Lucid Diagnostics are Alyeska Investment Group, L.P. (4.64%), BlackRock Inc (4.38%), Vanguard Capital Management, LLC (3.43%), Masters Capital Management LLC (2.09%), Aberdeen Group PLC (2.00%).
What percentage of Lucid Diagnostics is owned by institutions?
Institutions hold 32.8% of Lucid Diagnostics's shares outstanding; insiders hold 26.50%.
Which funds own Lucid Diagnostics?
The largest fund holders of Lucid Diagnostics are Vanguard MStar Total Stk Mkt Idx Invest (2.38%), abrdn Healthcare Opportunities (2.31%), iShares Russell 2000 ETF (1.88%), Fidelity Small Cap Index (0.83%), iShares Russell 2000 Growth ETF (0.74%).
What is Lucid Diagnostics's short interest?
13.5M shares of Lucid Diagnostics were sold short, 9.06% of the float; at the average daily volume it would take 11.71 days to cover.
Are insiders buying or selling Lucid Diagnostics?
Of the latest 1 reported insider transactions in Lucid Diagnostics (since August 20, 2025), 1 were purchases and 0 were sales.
How many shares of Lucid Diagnostics are outstanding?
Lucid Diagnostics has 190.9M shares outstanding, of which 140.8M are in the public float.