ADMA Biologics, Inc. (ADMA) Ownership
ADMA ownership summary
as of October 18, 2026- Institutions
- 92.6% of shares outstanding
- Insiders
- 1.97% of shares outstanding
- Shares outstanding
- 224.0M
- Float
- 219.7M shares available to trade
- Short interest
- 11.33% 20.6M shares short
- Days to cover
- 7.00 short interest down 14.9% vs prior month
- Institutions 92.57%
- Insiders 1.97%
- Other investors 5.46%
ADMA top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 17.12% | 38.4M | $409.6M | +1.5M (+4.1%) | June 30, 2026 |
| 2 | State Street Corp | 7.64% | 17.1M | $182.8M | +3.0M (+21.5%) | June 30, 2026 |
| 3 | Vanguard Capital Management, LLC | 4.51% | 10.1M | $107.9M | −203,062 (−2.0%) | June 30, 2026 |
| 4 | Vanguard Portfolio Management, LLC | 4.50% | 10.1M | $107.7M | +1.2M (+13.8%) | June 30, 2026 |
| 5 | Rubric Capital Management LP | 4.17% | 9.3M | $99.7M | +7.5M (+416.2%) | June 30, 2026 |
| 6 | Capital Research Global Investors | 3.91% | 8.8M | $93.5M | −2.4M (−21.8%) | June 30, 2026 |
| 7 | First Trust Advisors L.P. | 3.48% | 7.8M | $83.3M | +7.4M (+2,064.9%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.71% | 6.1M | $64.7M | +235,868 (+4.0%) | June 30, 2026 |
| 9 | Caligan Partners LP | 2.56% | 5.7M | $61.1M | +968,496 (+20.4%) | June 30, 2026 |
| 10 | D. E. Shaw & Co LP | 2.35% | 5.3M | $56.3M | +4.7M (+840.5%) | June 30, 2026 |
| 11 | Nantahala Capital Management, LLC | 2.11% | 4.7M | $50.4M | +4.7M (0.0%) | June 30, 2026 |
| 12 | Dimensional Fund Advisors, Inc. | 1.61% | 3.6M | $38.5M | −1.4M (−28.0%) | June 30, 2026 |
| 13 | The Goldman Sachs Group Inc | 1.57% | 3.5M | $37.5M | +710,053 (+25.3%) | June 30, 2026 |
| 14 | B Group, Inc | 1.46% | 3.3M | $34.8M | +55,000 (+1.7%) | June 30, 2026 |
| 15 | Nuveen, LLC | 1.46% | 3.3M | $34.8M | −2.8M (−46.5%) | June 30, 2026 |
| 16 | Duquesne Family Office LLC | 1.24% | 2.8M | $29.7M | +1.2M (+80.1%) | June 30, 2026 |
| 17 | Northern Trust Corp | 1.08% | 2.4M | $25.8M | +138,659 (+6.1%) | June 30, 2026 |
| 18 | Morgan Stanley - Brokerage Accounts | 1.01% | 2.3M | $24.2M | −168,936 (−6.9%) | June 30, 2026 |
| 19 | Ranger Investment Management LP | 0.94% | 2.1M | $22.6M | −168,393 (−7.4%) | June 30, 2026 |
| 20 | Charles Schwab Investment Management Inc | 0.93% | 2.1M | $22.3M | −3,178 (−0.2%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 33.5M shares and 7 cut 7.2M.
ADMA top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Small-Cap ETF | 5.95% | 13.3M | $142.4M | +3,210 (+0.0%) | September 30, 2026 |
| 2 | First Trust NYSE Arca Biotech ETF | 4.45% | 10.0M | $106.5M | — | September 30, 2026 |
| 3 | American Funds SMALLCAP World A | 3.81% | 8.5M | $91.0M | — | September 30, 2026 |
| 4 | Vanguard MStar Total Stk Mkt Idx Invest | 3.14% | 7.0M | $75.2M | −10,762 (−0.2%) | August 31, 2026 |
| 5 | iShares Russell 2000 ETF | 2.66% | 6.0M | $63.7M | −68,736 (−1.1%) | September 30, 2026 |
| 6 | State Street® SPDR® S&P® Biotech ETF | 2.04% | 4.6M | $48.7M | −87,200 (−1.9%) | September 30, 2026 |
| 7 | Fidelity Small Cap Index | 1.13% | 2.5M | $26.9M | +20,422 (+0.8%) | July 31, 2026 |
| 8 | Vanguard Small Cap Index | 1.07% | 2.4M | $25.6M | −135,981 (−5.4%) | September 30, 2026 |
| 9 | iShares Russell 2000 Growth ETF | 0.96% | 2.2M | $23.1M | −2,735 (−0.1%) | September 30, 2026 |
| 10 | iShares S&P Small-Cap 600 Growth ETF | 0.93% | 2.1M | $22.2M | — | September 30, 2026 |
| 11 | State Street SPDR Port S&P 600 Sm CpETF | 0.92% | 2.1M | $21.9M | — | September 30, 2026 |
| 12 | iShares Biotechnology ETF | 0.75% | 1.7M | $17.9M | −12,688 (−0.8%) | September 30, 2026 |
| 13 | Vanguard Russell 2000 ETF | 0.60% | 1.3M | $14.3M | +14,709 (+1.1%) | September 30, 2026 |
| 14 | Vanguard MStar Small Cap Growth Indx Inv | 0.60% | 1.3M | $14.2M | −112,268 (−7.8%) | September 30, 2026 |
| 15 | State Street® SPDR® S&P 600™ Sm Cp GrETF | 0.58% | 1.3M | $13.8M | — | September 30, 2026 |
| 16 | Xtrackers MSCI World Swap ETF 1C | 0.58% | 1.3M | $13.8M | −40,655 (−3.1%) | December 31, 2025 |
| 17 | Schwab US Small-Cap ETF™ | 0.53% | 1.2M | $12.6M | +792 (+0.1%) | September 30, 2026 |
| 18 | Fidelity Extended Market Index | 0.51% | 1.1M | $12.1M | −18,444 (−1.6%) | August 31, 2026 |
| 19 | DFA US Small Cap I | 0.46% | 1.0M | $11.1M | — | August 31, 2026 |
| 20 | Vanguard Tax-Managed Small Cap Adm | 0.46% | 1.0M | $11.0M | −532,000 (−34.0%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ADMA insider transactions
latest 9| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-09 | Kaitlin M Kestenberg-Messina | Sell | $15.63 | 10,096 | $157,800 |
| 2026-03-05 | Steve Elms | Buy | $15.67 | 7,000 | $109,690 |
| 2025-06-16 | Steve Elms | Sell | $20.24 | 194,749 | $3.9M |
| 2025-06-13 | Steve Elms | Sell | $20.82 | 137,931 | $2.9M |
| 2025-06-12 | Steve Elms | Sell | $21.69 | 92,941 | $2.0M |
| 2025-06-09 | Jerrold B Grossman | Sell | $21.31 | 10,000 | $213,100 |
| 2025-06-09 | Lawrence P Guiheen | Sell | $20.96 | 20,000 | $419,200 |
| 2025-05-22 | Lawrence P Guiheen | Sell | $20.12 | 1,221 | $24,567 |
| 2025-05-21 | Lawrence P Guiheen | Sell | $20.32 | 7,779 | $158,069 |
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.
ADMA shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ADMA
Institutional investors own 92.6% of ADMA Biologics's shares and insiders 1.97%. The largest holder is BlackRock Inc with 17.12% of the shares (38.4M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 11.33% of the float, or 7.00 days of average trading volume. The share count rose 2,374.3% since 2014.
Related: ADMA analyst forecast, ADMA key metrics. See the ADMA stock overview for the latest quote and news.
ADMA ownership FAQ
Who owns the most ADMA Biologics stock?
The largest shareholders of ADMA Biologics are BlackRock Inc (17.12%), State Street Corp (7.64%), Vanguard Capital Management, LLC (4.51%), Vanguard Portfolio Management, LLC (4.50%), Rubric Capital Management LP (4.17%).
What percentage of ADMA Biologics is owned by institutions?
Institutions hold 92.6% of ADMA Biologics's shares outstanding; insiders hold 1.97%.
Which funds own ADMA Biologics?
The largest fund holders of ADMA Biologics are iShares Core S&P Small-Cap ETF (5.95%), First Trust NYSE Arca Biotech ETF (4.45%), American Funds SMALLCAP World A (3.81%), Vanguard MStar Total Stk Mkt Idx Invest (3.14%), iShares Russell 2000 ETF (2.66%).
What is ADMA Biologics's short interest?
20.6M shares of ADMA Biologics were sold short, 11.33% of the float; at the average daily volume it would take 7.00 days to cover.
Are insiders buying or selling ADMA Biologics?
Of the latest 9 reported insider transactions in ADMA Biologics (since May 21, 2025), 1 were purchases and 8 were sales.
How many shares of ADMA Biologics are outstanding?
ADMA Biologics has 224.0M shares outstanding, of which 219.7M are in the public float.