Simple past tense and past participle of overweight.(verb)
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Use "overweighted" in a sentence
"I'm overweighted in technology, commodities and yield stocks, light on health care, financials and energy."
"Vanguard says the Asset Allocation fund suffered largely because former manager Mellon Capital Management overweighted stocks relative to the benchmark."
"The elk is a large and ungainly creature, with a body like a grand piano, gangling, knotty limbs and a cranium overweighted with antlers the shape of giant foam hands."