Waltham (Mass.) Contributory Retirement System will conduct a shortlist search of managers for an active domestic large-cap equity portfolio for the $116 million plan, said Joseph F. Juppé, executive director. The portfolio, the size of which is undetermined, will be funded through cash and rebalancing of assets, he said. Presentations should be made by mid-July, he said. H.C. Wainwright is advising.