Comfort Systems USA Ownership | Who Owns Comfort Systems USA?


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Comfort Systems USA Ownership Summary


Comfort Systems USA is owned by 90.26% institutional investors, 1.18% insiders, and 8.57% retail investors. Blackrock is the largest institutional shareholder, holding 12.93% of FIX shares. iShares Core S&P Mid-Cap ETF is the top mutual fund, with 3.25% of its assets in Comfort Systems USA shares.

FIX Ownership Benchmark


TypeName% Inst% Insiders% Retail
StockComfort Systems USA90.26%1.18%8.57%
SectorIndustrials Stocks 49.61%15.69%34.70%

Institutional Shareholders


Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock4.62M12.93%$1.40B
Vanguard group4.31M12.21%$4.02B
Blackrock funding, inc. /de3.51M9.96%$4.84B
State street1.47M4.17%$2.03B
Fmr1.45M4.11%$2.00B
Geode capital management1.24M3.51%$1.71B
Aqr capital management1.12M3.17%$1.49B
Jpmorgan chase889.89K2.52%$1.13B
Capital world investors865.78K2.46%$1.19B
Westfield capital management co lp620.91K1.76%$856.24M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Crown advisors management13.00K11.90%$17.93M
Scalar gauge management6.10K8.11%$8.41M
Soros capital management11.82K7.09%$16.30M
Blue grotto capital35.47K5.64%$48.91M
Peterson wealth services16.37K5.58%$22.57M
Bain capital public equity management ii121.58K4.69%$100.33M
Bwcp, lp22.02K4.63%$30.37M
Cowa12.01K4.47%$16.57M
Gallo partners, lp1.61K4.25%$2.22M
River & mercantile asset management llp49.37K4.07%$20.95M

Top Buyers

HolderShares% AssetsChange
Vanguard group4.31M0.06%625.57K
Norges bank503.17K0.05%503.17K
Capital investors391.83K0.13%278.20K
Vanguard fiduciary trust202.95K0.07%202.95K
Jpmorgan chase889.89K0.07%182.90K

Top Sellers

HolderShares% AssetsChange
Capital world investors865.78K0.16%-774.75K
Vaughan nelson investment management---363.95K
Gfi investment counsel---254.75K
Fmr1.45M0.11%-221.19K
Hennessy advisors---192.60K

New Positions

HolderShares% AssetsChangeValue
Norges bank503.17K0.05%503.17K$469.61M
Vanguard fiduciary trust202.95K0.07%202.95K$279.87M
Bain capital public equity management ii121.58K4.69%121.58K$100.33M
Vanguard global advisers77.87K0.06%77.87K$107.38M
Vanguard asset management60.21K0.07%60.21K$83.02M

Sold Out

HolderChange
Tfc financial management-1.00
Trifecta capital advisors-1.00
Wr wealth planners-1.00
Swan capital-1.00
Raleigh capital management-1.00

Institutional Ownership Trends


DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Mar 31, 20261,19612.30%31,824,254-4.31%901.02%6709.48%38915.09%
Dec 31, 2025660-27.07%19,351,266-41.93%540.62%358-27.24%225-26.71%
Sep 30, 2025556-26.36%16,441,216-48.58%460.57%295-32.80%200-11.50%
Jun 30, 202575917.49%33,834,8592.18%951.10%43917.07%22715.23%
Mar 31, 202519-97.20%845,687-97.49%20.03%12-96.64%1-99.57%

Top Mutual Funds Shareholders


HolderShares% HoldingChange
iShares Core S&P Mid-Cap ETF1.15M3.25%-
Vanguard US Total Market Shares ETF1.13M3.20%870.00
Vanguard Total Stock Mkt Idx Inv1.12M3.18%3.37K
Vanguard 500 Index Investor913.12K2.59%15.80K
American Funds SMALLCAP World A861.67K2.45%-297.53K
iShares Core S&P 500 ETF455.37K1.29%1.36K
Fidelity 500 Index449.44K1.28%1.57K
State Street® SPDR® S&P 500® ETF419.36K1.19%-440.00
Vanguard Small Cap Index405.20K1.15%-766.00
Vanguard Mid Cap Index Institutional380.72K1.08%779.00

Recent Insider Transactions


DateNameRoleActivityValue
May 27, 2026Hardy Rhoman J-Sell$649.83K
May 08, 2026GEORGE WILLIAM III CHIEF FINANCIAL OFFICERSell$7.79M
May 11, 2026GEORGE WILLIAM III CHIEF FINANCIAL OFFICERSell$2.02M
May 11, 2026Shaeff Julie CHIEF ACCOUNTING OFFICERSell$2.25M
May 07, 2026MYERS FRANKLIN-Sell$8.56M

Insider Transactions Trends


DateBuySell
2026 Q2-8
2026 Q1-10
2025 Q4-7
2025 Q3-11
2025 Q2-8

FIX Ownership FAQ


Who owns the most shares of Comfort Systems USA?

Comfort Systems USA’s largest shareholders are Blackrock (4.62M shares, 12.93%), Vanguard group (4.31M shares, 12.21%), and Blackrock funding, inc. /de (3.51M shares, 9.96%). Together, they hold 35.10% of Comfort Systems USA’s total shares outstanding.

Does Blackrock own Comfort Systems USA?

Yes, BlackRock owns 12.93% of Comfort Systems USA, totaling 4.62M shares as of Jun 2024. This represents 0.03% of BlackRock's total assets, with a market value of 1.4B$. In the last quarter, BlackRock increased its holdings by 137.16K shares, a 3.06% change.

Who is Comfort Systems USA’s biggest shareholder by percentage of total assets invested?

Crown advisors management is Comfort Systems USA’s biggest shareholder by percentage of total assets invested, with 11.90% of its assets in 13K Comfort Systems USA shares, valued at 17.93M$.

Who is the top mutual fund holder of Comfort Systems USA shares?

iShares Core S&P Mid-Cap ETF is the top mutual fund holder of Comfort Systems USA shares, with 3.25% of its total shares outstanding invested in 1.15M Comfort Systems USA shares.

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