Bullish options traders have racked up huge profits in Boston Scientific Corp. (BSX) - Get Report .

On August 15, Investitute's tracking systems detected the purchase of 4,500 September $36 calls in one print for $0.21 with shares at $33.89. Open interest in the strike was only 278 contracts before the trade occurred, showing that it was a new position.

The Healthcare sector has seen a revitalization year-to-date, and these investors may have wanted to participate in a continued move higher, risking a fraction of the price of a share in the event they were 'late to the party.'

Those September $36 calls traded up to $1.74 Thursday afternoon, more than eight times their purchase price. The stock rose 11.24% in the same period, underscoring how options can far outperform their underlying shares. Investitute co-founder Pete Najarian cited the unusual activity at that time on CNBC's "Halftime Report."

Long calls lock in the price where investors can buy a stock, letting them position for a rally at limited cost with the potential for significant leverage. They carry less risk than owning shares because the most that can be lost is the price of the options no matter how far the stock might fall.

Boston Scientific popped 3.24% to close at $37.62 Thursday, September 13. The medical device manufacturer has received notable upgrades from analysts recently, including a price-target increase to $43 from $39 at Needham earlier in the week.

Contributed by Investitute. TheStreet has an affiliate partnership with Investitute.