York Space Systems Inc. (YSS:NYSE) closed at $6.31 on October 23, 2026, up 3.44% on the day. The stock trades 85.8% below its 52-week high of $44.54 and 14.3% above its 52-week low of $5.52. Over the past year, it lost 81.2%. York Space Systems Inc. is part of the Technology sector.
In 185 trading sessions since January 30, 2026, YSS closed higher on 80 days (43%). Its best day was April 9, 2026 (+28.84%) and its worst was June 12, 2026 (-17.88%). The stock moved 10% or more in a single session 26 times. It opened at least 5% above the previous day's high 2 times.
York Space Systems is a leading, U.S.-based, space and defense prime providing a comprehensive suite of mission-critical solutions for national security, government and commercial customers. York is one of the only space and defense primes with proprietary hardware and software capabilities designed to address customers' complex mission requirements across the critical elements of the entire space ecosystem throughout the mission lifecycle. York is the number one provider to the U.S. Department of Defense's Proliferated Warfighter Space Architecture. York is a partner of choice for our customers, with differentiated performance versus traditional primes based on price, speed to deployment, and sophistication of capabilities.
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Based on end-of-day data. For information only, not investment advice.