Buy stop-limit order
A buy stop-limit order has a trigger above the current price and a limit. When price trades at the trigger, it sends a buy limit that fills only up to the limit.
Trigger 103, limit 103.50: price trades at 103, and you buy at 103.50 or better, never worse. If price jumps straight past 103.50, nothing fills. Suits breakout entries where missing the trade is acceptable. See also stop-limit order.
Learn more: types of orders.