BLACKBOXSTOCKS INC COM is a security (CUSIP 09229E303) tracked across SEC portfolio filings. 2 institutional managers reported $318K on Form 13F as of 2025-12-31.
| Manager | Location | Value | Shares |
|---|---|---|---|
| VANGUARD GROUP INC | Valley Forge, PA | $318K | 39,297 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | BIRMINGHAM, AL | — | 0 |