# ADTRAN HOLDINGS INC COM

ADTRAN HOLDINGS INC COM is a security (CUSIP 00486H105) tracked across SEC portfolio filings. 235 institutional managers reported $931.7M on Form 13F as of 2026-06-30; 26 registered fund positions totaling $66.6M via N-PORT as of 2026-05-31.

## Summary

- Issuer: ADTRAN HOLDINGS INC
- Class: COM
- CUSIP: 00486H105
- Asset category: EC
- 13F holders: 235
- 13F value: $931.7M
- 13F period: 2026-06-30
- N-PORT fund positions: 26
- N-PORT value: $66.6M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 235 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $98.6M | 7,840,254 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $71.2M | 8,188,496 |
| [ROYCE & ASSOCIATES LP](https://search.stillhousedata.com/firm/107689) | New York, NY | $39.3M | 3,127,403 |
| DnB Asset Management AS | Oslo, Q8 | $39.3M | 3,123,679 |
| STATE STREET CORP | BOSTON, MA | $29.6M | 2,350,737 |
| [WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC](https://search.stillhousedata.com/firm/173961) | CHICAGO, IL | $25.0M | 1,989,530 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $23.9M | 1,896,411 |
| MORGAN STANLEY | NEW YORK, NY | $23.1M | 1,832,872 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $22.9M | 1,819,123 |
| Boston Partners | BOSTON, MA | $22.7M | 1,651,038 |
| [Divisar Capital Management LLC](https://search.stillhousedata.com/firm/149091) | SAN FRANCISCO, CA | $22.3M | 1,769,439 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $18.5M | 1,518,697 |
| [First Eagle Investment Management, LLC](https://search.stillhousedata.com/firm/108260) | NEW YORK, NY | $17.4M | 1,248,507 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $16.8M | 1,337,028 |
| [NEEDHAM INVESTMENT MANAGEMENT LLC](https://search.stillhousedata.com/firm/106783) | NEW YORK, NY | $15.5M | 1,228,500 |

## Top fund holders (N-PORT)

_Showing 15 of 26 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $10.4M | 1.28% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $10.1M | 4.63% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $9.1M | 131.63% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $8.0M | 7.95% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $6.3M | 3.60% |
| [Paradigm Micro-Cap Fund](https://search.stillhousedata.com/fund/S000020362) | PARADIGM FUNDS | $3.8M | 281.00% |
| [VANGUARD MARKET NEUTRAL FUND](https://search.stillhousedata.com/fund/S000019457) | VANGUARD MONTGOMERY FUNDS | $3.6M | 82.28% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $3.3M | 4.37% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $2.1M | 9.47% |
| Weiss Strategic Interval Fund | Weiss Strategic Interval Fund | $2.0M | 38.65% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $1.6M | 3.32% |
| [Small Cap Core Portfolio](https://search.stillhousedata.com/fund/S000051867) | Bernstein Fund Inc | $1.3M | 18.65% |
| [VANGUARD U.S. MOMENTUM FACTOR ETF](https://search.stillhousedata.com/fund/S000061302) | VANGUARD WELLINGTON FUND | $1.2M | 6.45% |
| [Needham Growth Fund](https://search.stillhousedata.com/fund/S000003649) | Needham Funds Inc | $1.1M | 61.66% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $1.1M | 10.91% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/00486H105.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.