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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
Rockwood Research
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Broad Run Investment Management

Long Only
Manager
Broad Run Investment Management
Quarter
Q2 2026
13F value
$649.7M
Positions
24
CIK
0001568621
SHARE:XLINKEDINEMAIL
Ast Spacemobile IncASTSHISTORY19.91%(0.5%)
Applied Matls IncAMATHISTORY16.41%(0.5%)
Sunbelt Rentals Holdings IncSUNBHISTORY7.90%(0.3%)
Brookfield CorpBNHISTORY7.89%(0.6%)
Markel CorpMKLHISTORY6.19%(0.6%)
Oreilly Automotive IncORLYHISTORY5.34%(0.5%)
AON PLCAONHISTORY5.14%(0.5%)
Brookfield Asset Managmt LTDBAMHISTORY4.16%(0.2%)
Hilton Worldwide Hldgs IncHLTHISTORY3.26%—
Alphabet IncGOOGHISTORY2.96%(2.0%)
NVR IncNVRHISTORY2.79%(0.4%)
CDW CorpCDWHISTORY2.69%(0.2%)
American Tower Corp NewAMTHISTORY2.64%(0.5%)
Carmax IncKMXHISTORY2.31%(0.4%)
Transdigm Group IncTDGHISTORY2.21%—
Danaher CorporationDHRHISTORY2.08%—
RHRHHISTORY1.58%(0.3%)
Shenandoah TelecommunicationSHENHISTORY1.53%(25.0%)
Cogent Communications HldgsCCOIHISTORY1.41%(0.5%)
Floor & Decor Hldgs IncFNDHISTORY0.57%—
Disney Walt CoDISHISTORY0.50%(2.1%)
Relx PLCRELXHISTORY0.23%—
Brookfield Wealth Sol LTDBNTHISTORY0.15%—
Alphabet IncGOOGLHISTORY0.14%—
Positions are from the latest 13F-HR (period end 2026-06-30). Weights are calculated: position value ÷ the 13F book. Schedule 13D/13G stakes are merged in when present (shares and percent of class, no dollar value). Chg Shares and % Chg compare with the adjacent prior quarter's 13F only. % Out is either calculated (position shares ÷ issuer shares outstanding from the issuer's XBRL cover page; weighted-average basic shares as a fallback) or reported (percent of class on a Schedule 13D/13G newer than the 13F period) — hover a value for its source and date. Unavailable figures show “—”, never an estimate. Methodology