Biomerica, Inc. (BMRA) Ownership
BMRA ownership summary
as of October 18, 2026- Institutions
- 2.7% of shares outstanding
- Insiders
- 17.97% of shares outstanding
- Shares outstanding
- 4.6M
- Float
- 4.2M shares available to trade
- Short interest
- 0.65% 28K shares short
- Days to cover
- 0.75 short interest down 25.6% vs prior month
- Institutions 2.72%
- Insiders 17.97%
- Other investors 79.31%
BMRA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | HRT FINANCIAL LLC | 0.57% | 26K | $48,792 | +26,374 (0.0%) | June 30, 2026 |
| 2 | Geode Capital Management, LLC | 0.53% | 24K | $45,042 | −31,695 (−56.6%) | June 30, 2026 |
| 3 | BlackRock Inc | 0.41% | 19K | $34,477 | — | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 0.32% | 15K | $26,851 | — | June 30, 2026 |
| 5 | Jane Street Group LLC | 0.27% | 13K | $23,384 | +12,640 (0.0%) | June 30, 2026 |
| 6 | LPL Financial Corp | 0.24% | 11K | $20,071 | — | June 30, 2026 |
| 7 | UBS Group AG | 0.15% | 6,951 | $12,859 | +6,432 (+1,239.3%) | June 30, 2026 |
| 8 | Vanguard Fiduciary Trust Co | 0.14% | 6,613 | $12,234 | — | June 30, 2026 |
| 9 | Goss Wealth Management LLC | 0.08% | 3,603 | $6,666 | — | June 30, 2026 |
| 10 | Tower Research Capital LLC | 0.01% | 238 | $440 | +238 (0.0%) | June 30, 2026 |
| 11 | Hollencrest Securities, LLC | <0.01% | 200 | $370 | −625 (−75.8%) | June 30, 2026 |
| 12 | HARBOUR INVESTMENTS, INC. | <0.01% | 125 | $231 | — | June 30, 2026 |
| 13 | FMR Inc | <0.01% | 83 | $154 | +83 (0.0%) | June 30, 2026 |
| 14 | IFG Advisory, LLC | <0.01% | 25 | $46 | +25 (0.0%) | June 30, 2026 |
| 15 | Larson Financial Group, LLC | <0.01% | 12 | $22 | +12 (0.0%) | June 30, 2026 |
| 16 | Mcf Advisors, LLC | <0.01% | 6 | $11 | — | June 30, 2026 |
| 17 | Barclays PLC | <0.01% | 6 | $11 | +6 (0.0%) | June 30, 2026 |
| 18 | Federation des caisses Desjardins du Quebec | <0.01% | 3 | $6 | +3 (0.0%) | June 30, 2026 |
| 19 | Caitong International Asset Management Co., Limited. | 0.00% | 2 | $4 | +2 (0.0%) | June 30, 2026 |
| 20 | Danske Bank A/S. | 0.00% | 1 | $2 | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 10 holders added 46K shares and 2 cut 32K.
BMRA top mutual fund and ETF holders
3 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.27% | 13K | $23,234 | −67 (−0.5%) | August 31, 2026 |
| 2 | Fidelity Series Total Market Index | 0.08% | 3,489 | $6,455 | — | August 31, 2026 |
| 3 | Fidelity Total Market Index | 0.04% | 1,719 | $3,180 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
BMRA insider transactions
latest 4| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2023-05-24 | Zackary S Irani | Buy | $12.88 | 62 | $799 |
| 2023-05-12 | Zackary S Irani | Buy | $9.36 | 212 | $1,984 |
| 2023-05-09 | Zackary S Irani | Buy | $11.12 | 37 | $411 |
| 2023-04-28 | Zackary S Irani | Buy | $10.72 | 225 | $2,412 |
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.
BMRA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns BMRA
Institutional investors own 2.7% of Biomerica's shares and insiders 17.97%. The largest holder is HRT FINANCIAL LLC with 0.57% of the shares (26K), as of June 30, 2026. Among the top 20 institutions, 10 added shares and 2 reduced their stake in the latest filings. Short interest is 0.65% of the float, or 0.75 days of average trading volume. The share count fell 61.5% since 2014.
Related: BMRA key metrics. See the BMRA stock overview for the latest quote and news.
BMRA ownership FAQ
Who owns the most Biomerica stock?
The largest shareholders of Biomerica are HRT FINANCIAL LLC (0.57%), Geode Capital Management, LLC (0.53%), BlackRock Inc (0.41%), Vanguard Capital Management, LLC (0.32%), Jane Street Group LLC (0.27%).
What percentage of Biomerica is owned by institutions?
Institutions hold 2.7% of Biomerica's shares outstanding; insiders hold 17.97%.
Which funds own Biomerica?
The largest fund holders of Biomerica are Fidelity Extended Market Index (0.27%), Fidelity Series Total Market Index (0.08%), Fidelity Total Market Index (0.04%).
What is Biomerica's short interest?
28K shares of Biomerica were sold short, 0.65% of the float; at the average daily volume it would take 0.75 days to cover.
Are insiders buying or selling Biomerica?
Of the latest 4 reported insider transactions in Biomerica (since April 28, 2023), 4 were purchases and 0 were sales.
How many shares of Biomerica are outstanding?
Biomerica has 4.6M shares outstanding, of which 4.2M are in the public float.