Why Is York Space Systems (YSS) Stock Down? The Cut Is 50%, Not 32%

TL;DR

• YSS closed at $10.93, down 5.04%, on Friday against Thursday's $11.51 close, per stockanalysis.com. That is the settled close, a long way from what the tape printed overnight.
• Full-year revenue guidance went to $375-405 million from a $570 million midpoint, a cut of roughly 32%.
• The back half absorbs all of it. H1 is already reported at $208.8 million, so the new midpoint leaves $181.2 million for H2 against the $361.2 million the old guide implied: a 49.8% cut to the only part of the year still unwritten.
• The quarter itself was fine. Revenue $92.5 million, up 10%, gross margin 24% from 11%. The loss was $(0.31) a share against a $(0.12) consensus.
• Needham kept its Buy and cut its target to $18 from $33, citing adjusted EBITDA margin 870 basis points below expectations.

Why Is York Space Systems Stock Down Today?

York Space Systems cut its full-year 2026 revenue guidance by about a third, and it did so for a reason that pushes revenue out rather than losing it. Management pointed at a shift in US government space procurement toward IDIQ contracts (indefinite delivery, indefinite quantity), which book slowly at the start, plus supply chain delays moving work into 2027. CEO Dirk Wallinger described the IDIQ structure as "slow to start, but faster to accelerate task orders later." Asked which factor did more damage, management said the two contributed roughly equally. Source: York's Q2 2026 results release, August 13.

The Board

A 32% cut to the year is a 50% cut to the half that is left.

The Headline Percentage Is the Wrong One

Thirty-two percent is the number in every write-up of this quarter. It understates what happened, because two of the four quarters are already in the books.

Q1 revenue was $116.3 million. Q2 was $92.5 million. First half: $208.8 million, banked and unaffected by any revision. The old $570 million midpoint therefore implied $361.2 million in the back half. The new $390 million midpoint implies $181.2 million.

My arithmetic there lands on a 49.8% reduction, close enough to the "approximately 50%" Needham used in its note to make me confident we are describing the same thing.

Look at what that leaves. H2 is now guided below H1, on a business that spent the first half advertising an 88% contract win rate and 21 satellites launched in a single quarter.

What Actually Went Right

Gross margin more than doubled to 24% from 11%. Backlog stands at $592.0 million, with $684 million of liquidity against a $1.41 billion market cap. That balance sheet is why I read this as survivable: York can afford to wait for the task orders.

Whether they arrive is the open question, and Needham flagged the same gap. Management gave minimal insight on a recovery timeline.

The Tape Disagreed With Itself All Day

Three different numbers circulated on Friday and all of them are real.

Shares printed $8.86 after hours on Thursday, down 23%. By 12:35pm ET Friday they were down about 11%. The stock then made a new 52-week low at $9.63 and closed at $10.93, down 5.04%, some 13.5% above that low.

An overnight print of down 23% became a settled close of down 5%. Anyone treating the after-hours quote as the verdict got a number more than four times the size of the one that stood. In KinderCare's guidance cut this week the intraday damage did stick, and SunScout's post-IPO break never recovered either. The difference here is the bid under defense and space names that the drone tariff piece covers.

No options play is logged. I could not source a live chain at the close, and I will not describe a structure I cannot price.

The One-Line Read

A timing problem, priced once as a catastrophe and once as a shrug. The margin recovery is real, but H2 now guides below H1, and nobody has said when the task orders land.