# COMFORT SYS USA INC COM

COMFORT SYS USA INC COM is a security (CUSIP 199908104) tracked across SEC portfolio filings. 1,328 institutional managers reported $43.6B on Form 13F as of 2026-06-30; 98 registered fund positions totaling $4.3B via N-PORT as of 2026-06-30.

## Summary

- Issuer: COMFORT SYS USA INC
- Class: COM
- CUSIP: 199908104
- Asset category: EC
- 13F holders: 1,328
- 13F value: $43.6B
- 13F period: 2026-06-30
- N-PORT fund positions: 98
- N-PORT value: $4.3B
- N-PORT report: 2026-06-30

## Top institutional holders (Form 13F)

_Showing 15 of 1,328 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $4.8B | 3,512,927 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $4.0B | 4,310,126 |
| STATE STREET CORP | BOSTON, MA | $2.0B | 1,471,879 |
| FMR LLC | BOSTON, MA | $2.0B | 1,449,517 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $1.7B | 1,238,619 |
| [AQR CAPITAL MANAGEMENT LLC](https://search.stillhousedata.com/firm/111883) | Greenwich, CT | $1.5B | 1,116,230 |
| Capital World Investors | LOS ANGELES, CA | $1.2B | 865,780 |
| JPMORGAN CHASE & CO | NEW YORK, NY | $1.1B | 889,891 |
| [WESTFIELD CAPITAL MANAGEMENT CO LP](https://search.stillhousedata.com/firm/146990) | BOSTON, MA | $856.2M | 620,915 |
| MORGAN STANLEY | NEW YORK, NY | $634.5M | 460,135 |
| FIRST TRUST ADVISORS LP | Wheaton, IL | $573.5M | 415,886 |
| Capital International Investors | Los Angeles, CA | $540.3M | 391,831 |
| NORTHERN TRUST CORP | CHICAGO, IL | $453.8M | 329,098 |
| [MASSACHUSETTS FINANCIAL SERVICES CO /MA/](https://search.stillhousedata.com/firm/110045) | Boston, MA | $440.0M | 220,776 |
| BAILLIE GIFFORD & CO | EDINBURGH, X0 | $421.5M | 212,655 |

## Top fund holders (N-PORT)

_Showing 15 of 98 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $1.2B | 146.62% |
| State Street(R) SPDR(R) S&P 500(R) ETF Trust | State Street(R) SPDR(R) S&P 500(R) ETF Trust | $566.6M | 8.70% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $258.9M | 118.89% |
| [Fidelity Leveraged Company Stock Fund](https://search.stillhousedata.com/fund/S000007200) | Fidelity Securities Fund | $225.8M | 548.38% |
| [Invesco S&P 500 Equal Weight ETF](https://search.stillhousedata.com/fund/S000060812) | Invesco Exchange-Traded Fund Trust | $220.5M | 25.10% |
| [American Funds Fundamental Investors](https://search.stillhousedata.com/fund/S000009227) | American Funds Fundamental Investors | $219.6M | 14.26% |
| [Capital World Growth & Income Fund](https://search.stillhousedata.com/fund/S000009001) | Capital World Growth & Income Fund | $209.5M | 13.12% |
| [JPMorgan Growth Advantage Fund](https://search.stillhousedata.com/fund/S000004474) | J.P. Morgan Mutual Fund Investment Trust | $205.8M | 101.99% |
| [New Economy Fund](https://search.stillhousedata.com/fund/S000009598) | New Economy Fund | $164.8M | 31.94% |
| [Capital Group Global Growth Equity ETF](https://search.stillhousedata.com/fund/S000074250) | Capital Group Global Growth Equity ETF | $95.3M | 84.41% |
| [AB DISCOVERY GROWTH FUND, INC.](https://search.stillhousedata.com/fund/S000010117) | AB DISCOVERY GROWTH FUND, INC. | $90.7M | 336.86% |
| [Fidelity Growth Company Fund](https://search.stillhousedata.com/fund/S000007119) | Fidelity Mt. Vernon Street Trust | $85.9M | 8.70% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $79.8M | 359.50% |
| [T. Rowe Price Diversified Mid-Cap Growth Fund, Inc.](https://search.stillhousedata.com/fund/S000002073) | T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC. | $72.5M | 170.28% |
| [Bridge Builder Tax Managed Small/Mid Cap Fund](https://search.stillhousedata.com/fund/S000076295) | Bridge Builder Trust | $55.0M | 181.35% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/199908104.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.