Impact Biomedical
IBO · NYSE American
$3.27−$0.1475 (−4.32%)TodayMarket closed ·
Prev close $3.42
Who owns IBO
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 90.8% of IBO’s shares.
- Document Security Systems, Inc.86.2%
- Geode Capital Management, L.L.C.1.1%
- Vanguard Capital Management, LLC0.8%
- State Street Investment Management (US)0.6%
- Next 6 largest institutions2.1%
- All other shareholders9.2%
| Holder | Shares | % of shares |
|---|---|---|
| Document Security Systems, Inc. | 92.98M | 86.24% |
| Geode Capital Management, L.L.C. | 1.19M | 1.10% |
| Vanguard Capital Management, LLC | 808.69K | 0.75% |
| State Street Investment Management (US) | 607.90K | 0.56% |
| Vanguard Fiduciary Trust Co | 589.43K | 0.55% |
| Heuszel (Frank D.) | 495.48K | 0.46% |
| Chan (Heng Fai Ambrose) | 300.00K | 0.28% |
| Keene (David K.) | 300.00K | 0.28% |
| Sims (Melissa Kaye) | 300.00K | 0.28% |
| Zimmerman (Christian Thomas) | 300.00K | 0.28% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Extended Market Index Fund | 836.81K | 0.78% |
| John Hancock VIT - Tot. Stock Mrkt. Index | 2.27K | 0.00% |
| iShares Core S&P Total U.S. Stock Market ETF | 6 | 0.00% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $1.69K (3 trades) of IBO on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| DSS, INC. | Sale | 156 | $1.10K |
| DSS, INC. | Sale | 27 | $188 |
| DSS, INC. | Sale | 723 | $398 |
Short interest
Settled Sep 30, 2026
- Shares short
- 30.17K
- Days to cover
- 1.98
- % of shares outstanding
- 0.03%
- Average daily volume
- 15.21K
- Change since last report
- −94.3%
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