# ATKORE INC COM

ATKORE INC COM is a security (CUSIP 047649108) tracked across SEC portfolio filings. 317 institutional managers reported $1.9B on Form 13F as of 2026-06-30; 24 registered fund positions totaling $75.2M via N-PORT as of 2026-06-30.

## Summary

- Issuer: ATKORE INC
- Class: COM
- CUSIP: 047649108
- Asset category: EC
- 13F holders: 317
- 13F value: $1.9B
- 13F period: 2026-06-30
- N-PORT fund positions: 24
- N-PORT value: $75.2M
- N-PORT report: 2026-06-30

## Top institutional holders (Form 13F)

_Showing 15 of 317 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $230.0M | 3,635,940 |
| [Gates Capital Management, Inc.](https://search.stillhousedata.com/firm/137842) | New York, NY | $158.2M | 2,685,718 |
| BlackRock, Inc. | New York, NY | $154.7M | 2,626,791 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $84.8M | 1,439,116 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $72.3M | 1,227,991 |
| FIRST TRUST ADVISORS LP | Wheaton, IL | $72.3M | 1,226,840 |
| [Coliseum Capital Management, LLC](https://search.stillhousedata.com/firm/158120) | Rowayton, CT | $55.8M | 947,070 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $50.4M | 854,731 |
| STATE STREET CORP | BOSTON, MA | $49.2M | 835,156 |
| [EARNEST PARTNERS LLC](https://search.stillhousedata.com/firm/107926) | ATLANTA, GA | $45.8M | 777,905 |
| [Hill City Capital, LP](https://search.stillhousedata.com/firm/306709) | BOSTON, MA | $42.9M | 728,206 |
| [HARDING LOEVNER LP](https://search.stillhousedata.com/firm/104543) | Bridgewater, NJ | $41.5M | 704,862 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | BOSTON, MA | $41.1M | 698,134 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | CENTRAL, K3 | $31.4M | 532,992 |
| Oslo Pensjonsforsikring AS | Oslo, Q8 | $28.7M | 377,000 |

## Top fund holders (N-PORT)

_Showing 15 of 24 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $22.1M | 2.71% |
| [VANGUARD STRATEGIC EQUITY FUND](https://search.stillhousedata.com/fund/S000002593) | VANGUARD HORIZON FUNDS | $18.0M | 17.82% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $14.3M | 8.17% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $7.3M | 9.80% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $3.3M | 6.85% |
| [Easterly Snow Long/Short Opportunity Fund](https://search.stillhousedata.com/fund/S000073424) | James Alpha Funds Trust | $1.8M | 162.69% |
| [NORTH SQUARE SMALL CAP VALUE FUND](https://search.stillhousedata.com/fund/S000091143) | Valued Advisers Trust | $1.3M | 62.75% |
| [Fidelity Large Cap Value Enhanced Index Fund](https://search.stillhousedata.com/fund/S000015910) | Fidelity Commonwealth Trust II | $1.2M | 2.07% |
| [CGM Mutual Fund](https://search.stillhousedata.com/fund/S000000874) | CGM TRUST | $1.2M | 43.80% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $1.1M | 0.19% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $979K | 0.32% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $948K | 9.62% |
| [Bridge Builder Tax Managed Small/Mid Cap Fund](https://search.stillhousedata.com/fund/S000076295) | Bridge Builder Trust | $507K | 1.67% |
| [Russell Investments U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000089990) | Russell Investments Exchange Traded Funds | $435K | 88.13% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $277K | 6.61% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/047649108.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.