# UNITIL CORP COM

UNITIL CORP COM is a security (CUSIP 913259107) tracked across SEC portfolio filings. 247 institutional managers reported $737.3M on Form 13F as of 2026-06-30; 20 registered fund positions totaling $42.8M via N-PORT as of 2026-05-31.

## Summary

- Issuer: UNITIL CORP
- Class: COM
- CUSIP: 913259107
- Asset category: EC
- 13F holders: 247
- 13F value: $737.3M
- 13F period: 2026-06-30
- N-PORT fund positions: 20
- N-PORT value: $42.8M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 247 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $148.0M | 2,833,535 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $74.5M | 1,538,652 |
| STATE STREET CORP | BOSTON, MA | $38.4M | 734,927 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $31.5M | 602,103 |
| [FRONTIER CAPITAL MANAGEMENT CO LLC](https://search.stillhousedata.com/firm/106274) | Boston, MA | $28.7M | 548,780 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Toronto, A6 | $26.7M | 511,033 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $25.8M | 486,080 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $25.6M | 490,041 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $22.6M | 432,658 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $17.8M | 340,505 |
| Boston Trust Walden Corp | BOSTON, MA | $17.0M | 322,912 |
| MORGAN STANLEY | NEW YORK, NY | $15.5M | 297,246 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $14.2M | 271,989 |
| [Aristotle Capital Boston, LLC](https://search.stillhousedata.com/firm/173198) | BOSTON, MA | $13.6M | 260,523 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $13.4M | 256,317 |

## Top fund holders (N-PORT)

_Showing 15 of 20 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| Reaves Utility Income Fund | Reaves Utility Income Fund | $10.9M | 26.96% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $10.5M | 1.28% |
| [The Gabelli Utilities Fund](https://search.stillhousedata.com/fund/S000001075) | Gabelli Utilities Fund | $5.1M | 28.90% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $4.6M | 2.60% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $3.3M | 4.45% |
| Gabelli Utility Trust | Gabelli Utility Trust | $1.8M | 60.89% |
| [North Star Dividend Fund](https://search.stillhousedata.com/fund/S000040441) | NORTHERN LIGHTS FUND TRUST II | $1.7M | 171.78% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $1.5M | 3.20% |
| Gabelli Global Utility & Income Trust | Gabelli Global Utility & Income Trust | $575K | 49.02% |
| [Russell Investments U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000089990) | Russell Investments Exchange Traded Funds | $546K | 110.53% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $522K | 0.09% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $475K | 5.61% |
| [CORNERCAP SMALL-CAP VALUE FUND](https://search.stillhousedata.com/fund/S000004377) | CORNERCAP GROUP OF FUNDS | $475K | 39.46% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $421K | 0.14% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $182K | 1.84% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/913259107.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.