HCW Biologics Inc. (HCWB) Ownership
HCWB ownership summary
as of October 18, 2026- Institutions
- 7.4% of shares outstanding
- Insiders
- 7.98% of shares outstanding
- Shares outstanding
- 2.2M
- Float
- 1.7M shares available to trade
- Short interest
- 2.85% 61K shares short
- Days to cover
- 0.07 short interest up 557.1% vs prior month
- Institutions 7.41%
- Insiders 7.98%
- Other investors 84.60%
HCWB top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Jane Street Group LLC | 0.39% | 52K | $64,651 | +49,782 (+2,113.0%) | June 30, 2026 |
| 2 | Citadel Advisors Llc | 0.15% | 20K | $24,728 | +15,595 (+358.8%) | June 30, 2026 |
| 3 | HRT FINANCIAL LLC | 0.10% | 14K | $16,843 | −30,817 (−69.4%) | June 30, 2026 |
| 4 | Vanguard Fiduciary Trust Co | 0.05% | 6,510 | $8,072 | +6,193 (+1,953.6%) | June 30, 2026 |
| 5 | Tower Research Capital LLC | 0.03% | 4,117 | $5,105 | +1,644 (+66.5%) | June 30, 2026 |
| 6 | Connective Capital Management LLC | 0.02% | 3,338 | $4,139 | +3,338 (0.0%) | June 30, 2026 |
| 7 | Vanguard Capital Management, LLC | 0.01% | 2,003 | $2,484 | −1 (−0.0%) | June 30, 2026 |
| 8 | Golden State Wealth Management, LLC | 0.01% | 1,667 | $2,067 | — | June 30, 2026 |
| 9 | Barclays PLC | <0.01% | 191 | $237 | +191 (0.0%) | June 30, 2026 |
| 10 | Caitong International Asset Management Co., Limited. | <0.01% | 11 | $14 | +11 (0.0%) | June 30, 2026 |
| 11 | Advisor Group Holdings, Inc. | 0.00% | 4 | $5 | — | June 30, 2026 |
| 12 | UBS Group AG | 0.00% | 1 | $1 | −1,536 (−99.9%) | June 30, 2026 |
| 13 | DRW Securities, LLC | 0.00% | — | — | −35,281 (−100.0%) | March 31, 2026 |
| 14 | Susquehanna International Group, LLP | 0.00% | — | — | −20,071 (−100.0%) | March 31, 2026 |
| 15 | Wells Fargo & Co | 0.00% | — | — | −167 (−100.0%) | June 30, 2026 |
| 16 | J.W. COLE ADVISORS, INC. | 0.00% | — | — | −12,500 (−100.0%) | March 31, 2026 |
| 17 | Citigroup Inc | 0.00% | — | — | −1,755 (−100.0%) | June 30, 2026 |
| 18 | Geode Capital Management, LLC | 0.00% | — | — | −5,981 (−100.0%) | June 30, 2026 |
| 19 | Armistice Capital, LLC | 0.00% | — | — | −300,180 (−100.0%) | March 31, 2026 |
| 20 | Virtu Financial LLC | 0.00% | — | — | −7,968 (−100.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 7 holders added 77K shares and 11 cut 416K.
HCWB top mutual fund and ETF holders
3 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.42% | 9,317 | $11,553 | +3,960 (+73.9%) | August 31, 2026 |
| 2 | Fidelity Series Total Market Index | 0.10% | 2,197 | $2,724 | +2,197 (0.0%) | August 31, 2026 |
| 3 | Fidelity Total Market Index | 0.01% | 121 | $150 | — | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
HCWB insider transactions
latest 3| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-05-08 | Gary M Winer | Buy | $26.00 | 2,308 | $60,008 |
| 2025-05-08 | Lee Flowers | Buy | $26.00 | 962 | $25,012 |
| 2025-05-08 | Rebecca Byam | Buy | $26.00 | 8,462 | $220,012 |
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.
HCWB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns HCWB
Institutional investors own 7.4% of HCW Biologics's shares and insiders 7.98%. The largest holder is Jane Street Group LLC with 0.39% of the shares (52K), as of June 30, 2026. Among the top 20 institutions, 7 added shares and 11 reduced their stake in the latest filings. Short interest is 2.85% of the float, or 0.07 days of average trading volume. The share count fell 92.7% since 2020.
Related: HCWB analyst forecast, HCWB key metrics. See the HCWB stock overview for the latest quote and news.
HCWB ownership FAQ
Who owns the most HCW Biologics stock?
The largest shareholders of HCW Biologics are Jane Street Group LLC (0.39%), Citadel Advisors Llc (0.15%), HRT FINANCIAL LLC (0.10%), Vanguard Fiduciary Trust Co (0.05%), Tower Research Capital LLC (0.03%).
What percentage of HCW Biologics is owned by institutions?
Institutions hold 7.4% of HCW Biologics's shares outstanding; insiders hold 7.98%.
Which funds own HCW Biologics?
The largest fund holders of HCW Biologics are Fidelity Extended Market Index (0.42%), Fidelity Series Total Market Index (0.10%), Fidelity Total Market Index (0.01%).
What is HCW Biologics's short interest?
61K shares of HCW Biologics were sold short, 2.85% of the float; at the average daily volume it would take 0.07 days to cover.
Are insiders buying or selling HCW Biologics?
Of the latest 3 reported insider transactions in HCW Biologics (since May 8, 2025), 3 were purchases and 0 were sales.
How many shares of HCW Biologics are outstanding?
HCW Biologics has 2.2M shares outstanding, of which 1.7M are in the public float.