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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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Oakcliff Capital

Long Only
Manager
Bryan Lawrence
Quarter
Q2 2026
13F value
$268.5M
Positions
9
CIK
0001657335
SHARE:XLINKEDINEMAIL
Interactive Brokers Group InIBKRHISTORY33.42%—
Alphabet IncGOOGHISTORY15.55%—
Gildan Activewear IncGILHISTORY13.10%—
Transdigm Group IncTDGHISTORY11.99%—
Guidewire Software IncGWREHISTORY7.27%+10.1%
Moody's CorpMCOHISTORY5.74%NEW
Star Group L PSGUHISTORY5.26%—
Lennar Corp-ALENHISTORY3.98%—
Natural Resource Partners LPNRPHISTORY3.69%—
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