# DATA I O CORP COM

DATA I O CORP COM is a security (CUSIP 237690102) tracked across SEC portfolio filings. 32 institutional managers reported $8.7M on Form 13F as of 2026-06-30; 2 registered fund positions totaling $354K via N-PORT as of 2026-04-30.

## Summary

- Issuer: DATA I O CORP
- Class: COM
- CUSIP: 237690102
- Asset category: EC
- 13F holders: 32
- 13F value: $8.7M
- 13F period: 2026-06-30
- N-PORT fund positions: 2
- N-PORT value: $354K
- N-PORT report: 2026-04-30

## Top institutional holders (Form 13F)

_Showing 15 of 32 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [Kanen Wealth Management LLC](https://search.stillhousedata.com/firm/282746) | CORAL SPRINGS, FL | $2.1M | 839,421 |
| [Penbrook Management LLC](https://search.stillhousedata.com/firm/127269) | NEW YORK, NY | $1.4M | 355,850 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $1.1M | 350,374 |
| [Kovack Advisors, Inc.](https://search.stillhousedata.com/firm/140808) | FT. LAUDERDALE, FL | $1.1M | 285,481 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $1.0M | 407,643 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $356K | 140,679 |
| [ESSEX INVESTMENT MANAGEMENT CO LLC](https://search.stillhousedata.com/firm/109962) | BOSTON, MA | $294K | 74,558 |
| [CITADEL ADVISORS LLC](https://search.stillhousedata.com/firm/148826) | MIAMI, FL | $272K | — |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $220K | 86,867 |
| [Steward Partners Investment Advisory, LLC](https://search.stillhousedata.com/firm/283004) | NEW YORK, NY | $110K | 43,472 |
| [THOMPSON DAVIS & CO., INC.](https://search.stillhousedata.com/firm/41353) | RICHMOND, VA | $93K | 23,533 |
| JAMES INVESTMENT RESEARCH, INC. | ALPHA, OH | $88K | 22,402 |
| Legato Capital Management LLC | San Francisco, CA | $69K | 17,550 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $68K | 26,837 |
| [LPL Financial LLC](https://search.stillhousedata.com/firm/6413) | FORT MILL, SC | $57K | 22,545 |

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $229K | 0.03% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $125K | 0.17% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/237690102.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.