# UNIFIRST CORP MASS COM

UNIFIRST CORP MASS COM is a security (CUSIP 904708104) tracked across SEC portfolio filings. 340 institutional managers reported $3.5B on Form 13F as of 2026-06-30; 29 registered fund positions totaling $216.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: UNIFIRST CORP MASS
- Class: COM
- CUSIP: 904708104
- Asset category: EC
- 13F holders: 340
- 13F value: $3.5B
- 13F period: 2026-06-30
- N-PORT fund positions: 29
- N-PORT value: $216.4M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 340 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $537.6M | 2,136,962 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $307.8M | 1,595,587 |
| [LONDON CO OF VIRGINIA](https://search.stillhousedata.com/firm/106654) | RICHMOND, VA | $195.1M | 775,264 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $187.3M | 744,492 |
| STATE STREET CORP | BOSTON, MA | $142.9M | 567,877 |
| MILLENNIUM MANAGEMENT LLC | NEW YORK, NY | $133.2M | 529,609 |
| [KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC](https://search.stillhousedata.com/firm/104599) | LOS ANGELES, CA | $95.6M | 380,048 |
| FIRST TRUST ADVISORS LP | Wheaton, IL | $95.3M | 378,833 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $89.8M | 356,900 |
| [Balyasny Asset Management L.P.](https://search.stillhousedata.com/firm/138111) | Chicago, IL | $84.4M | 335,373 |
| BRANDES INVESTMENT PARTNERS, LP | LA JOLLA, CA | $69.1M | 274,466 |
| CITIGROUP INC | NEW YORK, NY | $66.5M | 251,361 |
| [Westchester Capital Management, LLC](https://search.stillhousedata.com/firm/155686) | VALHALLA, NY | $65.0M | 258,466 |
| [ALPINE ASSOCIATES MANAGEMENT INC.](https://search.stillhousedata.com/firm/138901) | PALM BEACH, FL | $62.2M | 235,364 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $57.0M | 226,403 |

## Top fund holders (N-PORT)

_Showing 15 of 29 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [The Merger Fund](https://search.stillhousedata.com/fund/S000005158) | Merger Fund | $53.3M | 215.89% |
| [T. Rowe Price New Horizons Fund, Inc.](https://search.stillhousedata.com/fund/S000002106) | T. ROWE PRICE NEW HORIZONS FUND, INC. | $48.7M | 38.17% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $40.8M | 5.00% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $20.0M | 11.39% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $9.4M | 12.59% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $8.4M | 9.11% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $6.0M | 12.41% |
| [Third Avenue Small-Cap Value Fund](https://search.stillhousedata.com/fund/S000001465) | Third Avenue Trust | $5.3M | 264.09% |
| [NYLI Merger Arbitrage ETF](https://search.stillhousedata.com/fund/S000025931) | New York Life Investments ETF Trust | $4.1M | 165.72% |
| [Virtus Westchester Event-Driven Fund](https://search.stillhousedata.com/fund/S000040968) | Virtus Event Opportunities Trust | $3.8M | 297.48% |
| [Fidelity SAI Merger Arbitrage Fund](https://search.stillhousedata.com/fund/S000091043) | Fidelity Greenwood Street Trust | $2.6M | 44.74% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $2.1M | 0.35% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $1.8M | 21.82% |
| [FPA Queens Road Small Cap Value Fund](https://search.stillhousedata.com/fund/S000004901) | Bragg Capital Trust | $1.8M | 38.03% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $1.8M | 0.58% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/904708104.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.