The space-tourism company’s stock rallied after ending Monday’s session down more than 5% Shares of Virgin Galactic Holdings Inc. were climbing 14% on Tuesday afternoon — putting the stock on pace for its biggest daily percentage gain since May 28, when it rose 22.6%.

The space-tourism company’s rally SPCE, +15.29% comes after it ended Monday’s session down 5.1%.

Short interest as a percentage of Virgin Galactic’s public float of shares is 27.66%, according to the latest exchange data. The stock was rising Tuesday on trading volume of 55.55 million shares, well above its 65-day average volume of 21.83 million shares.

Related: Virgin Galactic completes final Unity flight, sets sights on new Delta spacecraft

On Saturday, Virgin Galactic successfully completed the final commercial flight of the company’s Unity spacecraft.

The Richard Branson-founded spaceflight company will now halt commercial operations to develop its new Delta Class spacecraft, which is expected to enter commercial service in 2026.

The Galactic 07 mission also marked Virgin Galactic’s 12th mission to date and its second spaceflight in 2024. The flight was also Virgin Galactic’s seventh research mission.

Related: Virgin Galactic’s stock climbs ahead of final Unity spacecraft mission

Unlike the Unity spacecraft — which has four seats for paying passengers and can make a single spaceflight per month — the Delta spacecraft will have six passenger seats and will be capable of making up to eight spaceflights a month. Delta tickets will be priced at $600,000, compared with the current ticket price of $450,000.

When Virgin Galactic reported its fiscal first-quarter results last month, the company said that the Delta Class production schedule remains on track for revenue service in 2026.