Enables transmembrane receptor protein tyrosine kinase adaptor activity. Involved in intracellular signal transduction. Acts upstream of or within several processes, including B-1 B cell homeostasis; brown fat cell differentiation; and cell surface receptor signaling pathway. Located in actin filament; ruffle; and stress fiber. Is expressed in dorsal aorta. Orthologous to human SH2B2 (SH2B adaptor protein 2). [provided by Alliance of Genome Resources, Apr 2022]