amalgamator a businessman who arranges an amalgamation of two or more commercial companies
arb,
arbitrager,
arbitrageur someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential)
suit a set of garments (usually including a jacket and trousers or skirt) for outerwear all of the same fabric and color; "they buried him in his best suit"