TOP TIERMARKET NEWSWIRE
Movers explained · 2026-09-22

Archived explainer. For the current picture see today's KTOS page.

Why Is KRATOS DEFENSE & SEC (KTOS) Stock Down Today?

By the Top Tier Newswire AI Desk · September 22, 2026 at 10:47 AM ET · reviewed against 6 wire stories

KRATOS DEFENSE & SEC (KTOS) is down -5.04% in the latest session. Our newswire has captured 6 stories on KTOS across 5 sources in the last 36 hours, with AI sentiment reading bullish (avg 67/100).

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Kratos Defense & Security Solutions (KTOS) fell 5.04% to $46.14 in afternoon trading on September 22, 2026. The stock opened with a 1.1% gap up from the previous close of $48.59 but quickly reversed course. The decline followed a significant drop in early morning trading after the stock reached an intraday high of $49.72. The session low of $46.02 was reached at 10:35 AM ET, with volume of 1.2 million shares, well below the 3-month average. The move appears to reflect broader market uncertainty and a lack of follow-through on recent positive news.

What Happened

Kratos and GE Aerospace announced a milestone in the development of the GEK800 (F143) turbofan propulsion system for cruise missiles. The companies reported a 100% success rate in the ignition test at Kratos’ X-58 facility. This development is a key step toward the production of the JASSM (Joint Air-to-Surface Standoff Missile) program. Despite the technical progress, the stock declined sharply. The move comes amid a broader context of mixed signals for defense contractors, including a report that Red Cat missed a Pentagon drone procurement round. Additionally, recent insider selling by multiple executives, including SVP Marie Mendoza and President Phillip Carrai, has raised questions about internal confidence.

What The Data Shows

KTOS is trading near its 52-week low of $43.09, having printed 22 fresh 52-week lows on September 22. Over the past eight sessions, the stock has fallen 0.4%, from $46.40 to $46.22. The company’s fundamentals remain mixed: it has a high P/E of 287.6 and a narrow net margin of 2.0%. Insiders have sold 16 times in the last 90 days, totaling $24.7 million. The recent selling activity includes transactions by several top executives, with the most recent reported on September 17. The stock’s beta of 1.11 suggests it is somewhat sensitive to broader market swings, which may have amplified the decline.

What To Watch

The stock has no upcoming earnings report to anchor near-term movement. Investors will likely monitor the breadth of coverage for the GEK800 milestone in the coming days, as well as any further insider transactions or contract awards.

AI-assisted analysis composed exclusively from headlines and data on the Top Tier newswire. Public view is delayed 4 hours from real time. Not financial advice.

KTOS by the numbers

Last: $46.14Session: -5.04%7 sessions: -0.39%Coverage: 6 stories / 5 sourcesAI sentiment: 67/100 (bullish)Mkt cap: $8.9BP/E: 287.652w: $43.09 to $134.00
KTOS · today's session (5-min) · -2.65% vs prior close · updated 3:43 PM ET
$45.79$47.87$49.95prev close $48.59$47.307:00 AM9:10 AM11:20 AM1:30 PM3:40 PM7:00 AM · $49.137:10 AM · $49.007:20 AM · $49.037:30 AM · $49.027:35 AM · $49.117:40 AM · $49.157:45 AM · $49.097:50 AM · $49.058:05 AM · $49.058:10 AM · $49.038:20 AM · $49.188:25 AM · $49.208:30 AM · $49.208:40 AM · $49.378:45 AM · $49.438:50 AM · $49.409:00 AM · $49.499:05 AM · $49.349:10 AM · $49.729:15 AM · $49.499:20 AM · $49.469:25 AM · $49.509:30 AM · $47.989:35 AM · $48.689:40 AM · $47.749:45 AM · $47.629:50 AM · $47.699:55 AM · $47.5110:00 AM · $47.4610:05 AM · $46.9110:10 AM · $46.7710:15 AM · $46.7110:20 AM · $46.3110:25 AM · $46.4710:30 AM · $46.3210:35 AM · $46.1310:40 AM · $46.1510:45 AM · $46.0810:50 AM · $46.1710:55 AM · $46.0111:00 AM · $46.1611:05 AM · $46.6011:10 AM · $46.7711:15 AM · $47.0011:20 AM · $47.0311:25 AM · $46.9411:30 AM · $46.7311:35 AM · $46.7211:40 AM · $46.8311:45 AM · $46.8711:50 AM · $46.8011:55 AM · $47.0312:00 PM · $46.9612:05 PM · $46.7512:10 PM · $46.8512:15 PM · $46.9012:20 PM · $46.8212:25 PM · $46.9112:30 PM · $46.9512:35 PM · $46.8812:40 PM · $46.8812:45 PM · $47.2312:50 PM · $47.2612:55 PM · $47.201:00 PM · $47.011:05 PM · $47.061:10 PM · $47.121:15 PM · $47.081:20 PM · $46.981:25 PM · $47.031:30 PM · $46.851:35 PM · $46.901:40 PM · $46.981:45 PM · $46.991:50 PM · $47.101:55 PM · $47.262:00 PM · $47.352:05 PM · $47.502:10 PM · $47.432:15 PM · $47.452:20 PM · $47.382:25 PM · $47.442:30 PM · $47.452:35 PM · $47.512:40 PM · $47.502:45 PM · $47.552:50 PM · $47.592:55 PM · $47.783:00 PM · $47.773:05 PM · $47.683:10 PM · $47.633:15 PM · $47.493:20 PM · $47.313:25 PM · $47.243:30 PM · $47.383:35 PM · $47.383:40 PM · $47.30
AI sentiment, last 36h · averaged over 6 stories · 67/100 bullish
AI sentiment 67/100 (bullish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 6 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishGlobeNewswire · sentiment 73 · Kratos and GE Aerospace Achieve Significant Program Milestone with Successful Ignition of GEK800 Turbofan Cruise Missile Propulsion SystemGlobeNewswire · 73Kratos and GE Aerospace Achieve Significant Program Milestone with Successful Ignition of…StockTitan · sentiment 67 · Kratos and GE Aerospace Achieve Significant Program Milestone with Successful Ignition of GEK800 Turbofan Cruise Missile Propulsion SystemStockTitan · 67Kratos and GE Aerospace Achieve Significant Program Milestone with Successful Ignition of…The Fly · sentiment 63 · Kratos, GE announces milestone with ignition of GEK800 turbofan cruise systemThe Fly · 63Kratos, GE announces milestone with ignition of GEK800 turbofan cruise systemMarketChameleon · sentiment 67 · GE Aerospace logs a GEK800 ignition milestone as the engine’s new “F143” designation targets long-range strike needsMarketChameleon · 67GE Aerospace logs a GEK800 ignition milestone as the engine’s new “F143” designation targ…MarketChameleon · sentiment 67 · Kratos and GE Aerospace hit a 100% ignition success milestone for the GEK800 (F143) cruise-missile turbofan September 21, 2026MarketChameleon · 67Kratos and GE Aerospace hit a 100% ignition success milestone for the GEK800 (F143) cruis…Seeking Alpha · sentiment 67 · Kratos, GE Aerospace advance cruise missile engine with ignition testSeeking Alpha · 67Kratos, GE Aerospace advance cruise missile engine with ignition test
1d agoSeeking AlphaBULLISH 67Product/PR

Kratos, GE Aerospace advance cruise missile engine with ignition test

Kratos (KTOS) and GE Aerospace (GE) ignite GEK800/F143 turbofan for cruise missiles—key milestone on path to JASSM production.

1d agoMarketChameleonBULLISH 67Product/PR

Kratos and GE Aerospace hit a 100% ignition success milestone for the GEK800 (F143) cruise-missile turbofan September 21, 2026

Kratos (KTOS) and GE Aerospace reported a key milestone for the GEK800 (recently designated F143): a successful ignition test at Kratos’ X-58 facility with a stated 100% success rate for this development phase. The companies said the result initiates a new testing campaign, keeps the program on schedule, and supports their push toward an affordable, high-performance cruise-missile propulsion system aimed at long-range, stand-off strike requirements.

1d agoMarketChameleonBULLISH 67Product/PR

GE Aerospace logs a GEK800 ignition milestone as the engine’s new “F143” designation targets long-range strike needs

GE Aerospace and Kratos reported successful ignition of the GEK800 turbofan cruise missile propulsion system at Kratos’ X-58 test facility, calling it a 100% success rate for this phase and saying the program remains on schedule. The engine has been recently designated “F143” and is aimed at long-range, stand-off strike needs, with the partners emphasizing durability, integration readiness, and a path toward large-volume production.

1d agoThe FlyBULLISH 63Product/PR

Kratos, GE announces milestone with ignition of GEK800 turbofan cruise system

1d agoGlobeNewswireBULLISH 73Product/PR

Kratos and GE Aerospace Achieve Significant Program Milestone with Successful Ignition of GEK800 Turbofan Cruise Missile Propulsion System

SAN DIEGO, Sept. 21, 2026 (GLOBE NEWSWIRE) -- Kratos Defense Security Solutions, Inc., (NASDAQ: KTOS) a technology company in the defense, national security and global markets, and GE Aerospace (NYSE: GE) announced a key...

1d agoStockTitanBULLISH 67Product/PR

Kratos and GE Aerospace Achieve Significant Program Milestone with Successful Ignition of GEK800 Turbofan Cruise Missile Propulsion System

SAN DIEGO, Sept. 21, 2026 (GLOBE NEWSWIRE) -- Kratos Defense Security Solutions, Inc., (NASDAQ: KTOS) a technology company in the defense, national security and global markets, and GE Aerospace (NYSE: GE) announced a key...

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More on KTOS: full news and sentiment history. Sentiment scores are AI-derived research signals, not financial advice.

Earlier KTOS move explainers: 2026-09-22 · 2026-08-21 · 2026-08-20