AVAV $144.65 -1.10% ▼ BA $212.25 +0.90% ▲ BAH $72.80 -0.95% ▼ CACI $623.61 -1.06% ▼ CW $566.75 -0.35% ▼ GD $359.39 -1.79% ▼ HEI $325.48 -0.37% ▼ HII $285.93 -2.08% ▼ HWM $259.27 -0.85% ▼ IRDM $47.21 +1.42% ▲ KBR $36.82 -1.89% ▼ KTOS $47.82 -0.58% ▼ LDOS $133.05 -0.86% ▼ LHX $256.45 -2.08% ▼ LMT $525.28 -1.36% ▼ MRCY $82.42 -2.45% ▼ NOC $514.98 -2.09% ▼ PLTR $174.33 -4.44% ▼ RTX $200.79 -0.65% ▼ SAIC $126.75 +0.20% ▲ TDG $1,162.05 +0.36% ▲ TXT $79.07 -0.38% ▼ AVAV $144.65 -1.10% ▼ BA $212.25 +0.90% ▲ BAH $72.80 -0.95% ▼ CACI $623.61 -1.06% ▼ CW $566.75 -0.35% ▼ GD $359.39 -1.79% ▼ HEI $325.48 -0.37% ▼ HII $285.93 -2.08% ▼ HWM $259.27 -0.85% ▼ IRDM $47.21 +1.42% ▲ KBR $36.82 -1.89% ▼ KTOS $47.82 -0.58% ▼ LDOS $133.05 -0.86% ▼ LHX $256.45 -2.08% ▼ LMT $525.28 -1.36% ▼ MRCY $82.42 -2.45% ▼ NOC $514.98 -2.09% ▼ PLTR $174.33 -4.44% ▼ RTX $200.79 -0.65% ▼ SAIC $126.75 +0.20% ▲ TDG $1,162.05 +0.36% ▲ TXT $79.07 -0.38% ▼

Defense Sector Faces Broad Decline as Kratos, Mercury, and HII Slide

August 20, 2026 · by DPW Pipeline

Defense Sector Faces Broad Decline as Kratos, Mercury, and HII Slide

Aerospace and defense stocks experienced significant downward pressure during the latest trading session, with several major names posting steep losses. The declines affected a range of sub-sectors, from shipbuilding to electronic warfare components, dragging down market capitalization across the board.

Mercury Systems led the downward trajectory among the tracked firms. The technology firm, which manufactures trusted mission-critical components for aerospace primes, saw its shares drop by 8.58%. The stock closed at $94.23, down from a previous close of $103.07. This move trimmed the company’s market cap to approximately $6.67 billion.

Kratos Defense & Security Solutions also faced heavy selling pressure. The company, known for providing unmanned systems and secure communication products, fell 7.57% to settle at $56.18. This decline from a prior close of $60.78 brings Kratos’s valuation to around $12.12 billion.

In the shipbuilding domain, Huntington Ingalls Industries saw its shares retreat by 3.93%. The builder of nuclear and non-nuclear ships for the U.S. Navy closed at $301.40, compared to the previous session’s $313.75. Huntington Ingalls currently holds a market capitalization of roughly $12.28 billion.

What to watch

  • Upcoming earnings releases from the respective companies to assess guidance on government contract flows.
  • Any updates on Department of Defense budget appropriations that may impact shipbuilding and technology procurement.
  • Milestone deliveries and contract modifications for the Mission Technologies and Ingalls segments at Huntington Ingalls.

Source: original release