Fill a large saucepan with 1 inch of water and fit with a steamer basket. Bring the water to a boil. Place the broccoli in the basket, cover, and steam until tender, 5 to 7 minutes. Rinse with cold water to cool.
In a large bowl, toss the broccoli with the olives, orange segments and zest, oil, ½ teaspoon salt, and ¼ teaspoon pepper.