TOP TIERMARKET NEWSWIRE
Movers explained · 2026-08-25

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

Why Is MERCURY SYS INC (MRCY) Stock Down Today?

By the Top Tier Newswire AI Desk · August 25, 2026 at 10:31 AM ET · reviewed against 2 wire stories

MERCURY SYS INC (MRCY) is down -3.66% in the latest session. Our newswire has captured 2 stories on MRCY across 2 sources in the last 36 hours, with AI sentiment reading bullish (avg 60/100).

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MRCY stock is down 3.66% to $86.31 as of the latest trade. The decline follows a mixed intraday session marked by a sharp reversal from a gap up open and a lack of follow-through buying. Recent insider selling and a deteriorating sentiment trend also contributed to the sell-off.

What Happened

Mercury Systems opened the session at $90.99, a 1.6% gap up from the prior close, but the stock quickly reversed course. The session high of $91.12 at 9:30 AM ET was followed by a steady decline, with the stock hitting a session low of $86.26 at 10:30 AM ET. The stock has traded down for most of the session, closing the day at $86.31. Despite Baird maintaining a bullish stance with a recent Fresh Pick designation, the market has not responded with conviction. The stock is currently trading below its 52-week high of $128.45 and near its 52-week low of $65.04.

Recent insider transactions have added to the bearish tone. Three top executives, including the CEO, CFO, and Corporate Secretary, sold shares on August 19. Over the last 90 days, insiders have sold 11 times, totaling $12.5 million, with the most recent filing on August 21. These sales suggest a lack of near-term confidence in the stock’s direction.

What The Data Shows

The stock’s intraday volume of 0.1 million shares is below its 3-month average, indicating a lack of institutional or retail participation. The session has seen 1 fresh 52-week high and 8 fresh 52-week lows, highlighting the stock’s volatility and the challenge of finding consistent buyers. The stock’s fundamentals remain mixed: revenue is up 7.9% TTM, but the company remains unprofitable with a net loss of $0.50 per share and a net margin of -3.0%. The stock’s beta of 1.00 suggests it is in line with the broader market in terms of volatility.

What To Watch

Mercury Systems does not have an upcoming earnings date listed. Traders and investors should monitor the breadth of coverage and sentiment shifts in the coming days, as well as any follow-up from analysts or insiders.

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.

MRCY by the numbers

Last: $86.31Session: -3.66%Coverage: 2 stories / 2 sourcesAI sentiment: 60/100 (bullish)Mkt cap: $5.5B52w: $65.04 to $128.45
MRCY · Aug 25 session (5-min) · +0.07% vs prior close · updated 8:47 PM ET
$86.23$88.60$90.98prev close $89.59$89.659:30 AM11:27 AM1:25 PM3:22 PM5:20 PM9:30 AM · $90.729:35 AM · $89.289:40 AM · $88.489:45 AM · $88.699:50 AM · $88.999:55 AM · $88.1810:00 AM · $88.1610:05 AM · $88.0410:10 AM · $88.5310:15 AM · $87.4710:20 AM · $86.8610:25 AM · $86.9410:30 AM · $86.4810:35 AM · $86.7010:40 AM · $86.8610:45 AM · $86.9010:50 AM · $87.3510:55 AM · $86.6811:00 AM · $86.8011:05 AM · $87.2811:10 AM · $87.0611:15 AM · $87.5011:20 AM · $87.2211:25 AM · $87.2111:30 AM · $87.2411:35 AM · $87.1411:40 AM · $87.1511:45 AM · $87.3211:50 AM · $87.2511:55 AM · $87.2212:00 PM · $87.0812:05 PM · $87.0312:10 PM · $86.9412:15 PM · $86.9812:20 PM · $86.9312:25 PM · $87.0412:30 PM · $87.2412:35 PM · $87.1312:40 PM · $87.1612:45 PM · $87.1412:50 PM · $87.1512:55 PM · $87.181:00 PM · $87.201:05 PM · $87.191:10 PM · $87.371:15 PM · $87.211:20 PM · $87.141:25 PM · $87.231:30 PM · $87.191:35 PM · $87.151:40 PM · $87.181:45 PM · $86.881:50 PM · $86.801:55 PM · $86.952:00 PM · $86.902:05 PM · $86.722:10 PM · $86.882:15 PM · $87.142:20 PM · $87.282:25 PM · $87.162:30 PM · $87.162:35 PM · $87.122:40 PM · $87.502:45 PM · $87.842:50 PM · $87.952:55 PM · $87.843:00 PM · $87.963:05 PM · $87.473:10 PM · $87.383:15 PM · $87.233:20 PM · $87.223:25 PM · $87.473:30 PM · $87.423:35 PM · $87.283:40 PM · $87.473:45 PM · $87.343:50 PM · $88.283:55 PM · $87.714:00 PM · $87.744:05 PM · $89.724:10 PM · $87.744:40 PM · $87.745:20 PM · $89.65
AI sentiment, last 36h · averaged over 2 stories · 60/100 bullish
AI sentiment 60/100 (bullish)0 · bearish50bullish · 100

The headlines behind the move

Story flow · 2 stories on the wire, last 36h · hover or tap a dot for the headline
36h ago24h ago12h agopublishThe Fly · sentiment 63 · Mercury Systems designated as a bullish Fresh Pick at BairdThe Fly · 63Mercury Systems designated as a bullish Fresh Pick at BairdInvesting.com Analyst Ratings · sentiment 56 · Baird reiterates Mercury Systems stock rating on execution outlookInvesting.com Analyst Ratings · 56Baird reiterates Mercury Systems stock rating on execution outlook
19d agoInvesting.com Analyst RatingsBULLISH 56Analyst

Baird reiterates Mercury Systems stock rating on execution outlook

Baird reiterates Mercury Systems stock rating on execution outlook

20d agoThe FlyBULLISH 63Analyst

Mercury Systems designated as a bullish Fresh Pick at Baird

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

Earlier MRCY move explainers: 2026-08-25 · 2026-08-21 · 2026-08-20 · 2026-08-19