Insider buying last 90 days
No open-market insider purchases were filed for MRCY in the last 90 days.
From Form 4 filings, dated to when each was filed.
Sep 28 close
This week's news around Mercury Systems centers on legal and governance matters rather than operating results. Levi & Korsinsky issued an investor alert regarding a class action lawsuit alleging false statements about acquisition strategy, revenue recognition practices, and program performance between December 7, 2020, and June 23, 2023, while a separate report notes a court granted preliminary approval for stockholder derivative action settlements, prompting some re-evaluation of governance and valuation. Short interest data as of September 15, 2026 showed 5.03 million shares sold short, a 3.81% decrease from the prior report, with 8.35% of the public float held short and a 7.3-day cover ratio. An executive sale of 1,000 shares at $86.52 under a Rule 10b5-1 plan and routine Form 144 and Form 4 filings round out the period's activity.
Shares close at $80.12, down 2.5%, sitting below both the 50-day average of $94.06 and the 200-day average of $91.69. Over the past month the stock is down 11.4%, and over three months down 27.3%, though it remains up 12.2% over six months and 9.6% over one year. The GekkoIndex reads 65.8, placing MRCY in the Accumulation zone, with price standing 15% below Gekko Fair Value of $94.29.
The next earnings report is scheduled for 3 November 2026 after the close, 35 days out and beyond a typical 20-trading-day holding window. Seasonality over five years shows the next 20 trading days averaging a 3% gain, positive in 3 of those years. No insider, Congress, or unusual options activity is recorded in the current windows, leaving trend and valuation gap as the primary points of note.
Written by AI and checked automatically against the figures on this page. Generated Sep 29, 2026 from the data above.
Mercury Systems scores 4 supportive, 1 mixed and 0 headwinds across the 5 checklist items with data.
Six things swing traders check before a 20-day hold, read from the latest data.
4 supportive1 mixed0 headwinds
Averages disagree
Close $80.12 sits between the 50-day ($94.06) and 200-day ($91.69) averages, or the averages disagree.
See the chart65.8, Accumulation
Reading 65.8 is in the Accumulation zone.
See the GekkoIndex15.0% below
Price is 15% below Gekko Fair Value (more than 5% below).
See fair valueNo data
No insider, Congress or unusual options activity in the window.
See smart moneyReports in 35 days
Next report Nov 3, 2026, 35 days away — outside a typical 20-trading-day hold.
See earnings+3.0% on average
From this point in the calendar, the next 20 trading days averaged +3% over 5 years, rising in 3 of them.
See seasonalityA description of current data, not a recommendation. How this page works
Mercury Systems closed at $80.12 on Sep 28, 2026, +9.6% over the past year, inside a 52-week range of $65.04 to $128.45.
Use the left and right arrow keys to read daily values.
Put MRCY on a Gekko watchlist and see its GekkoIndex, Gekko Fair Value and smart money signals update on the chart as they change.
Mercury Systems designs and manufactures advanced electronic components, modules, and integrated subsystems used mainly in aerospace and defense applications. Its work touches roughly 300 programs, serving 25 defense contractors as well as a range of commercial aviation clients. The company is recognized for building the hardware that underpins complex defense and aviation systems, from small parts to fully integrated assemblies.
Its product range covers items such as power amplifiers, switches, oscillators, filters, converters, chips, and monolithic microwave integrated circuits, along with memory and storage devices. It also produces higher-level modules like embedded processing boards, digital receiver boards, RF and microwave assemblies, transceivers, and specialized video and input/output boards, in addition to complete subsystems. Beyond manufacturing, Mercury Systems develops technologies for electronic warfare, radar simulation and testing, signals intelligence, and unmanned aerial vehicle systems, including onboard processors for real-time imagery. The company operates across the United States, Europe, and Asia Pacific.
Founded in 1981 under the name Mercury Computer Systems, the company adopted its current name, Mercury Systems, in November 2012. It is headquartered in Andover, Massachusetts, and its shares are listed on the NASDAQ under the ticker MRCY.
Mercury Systems’s GekkoIndex — Gekko’s 0 to 100 smart money score — reads 65.8, in the Accumulation zone, up 1.5 points over five sessions.
Up 1.5 points over five sessions.
Reading for Sep 28, 2026
| Zone | Readings | 5 days | 20 days | ||
|---|---|---|---|---|---|
| Buying | 21 | +2.4% | +6.0% | ||
| Accumulation (current zone) | 174 | +2.4% | +8.0% | ||
| Neutral | 429 | +0.5% | +3.1% | ||
| Distribution | 45 | −0.3% | −3.5% | ||
| Selling | 3 | Too few readings yet | |||
Average MRCY share-price change over the trading days after each daily reading in its GekkoIndex history. Across every stock Gekko tracks, Accumulation readings averaged +2.3% over 20 days. Past behaviour doesn’t guarantee future results.
Accumulation zone: Institutional interest building. About the five zones →
Mercury Systems trades 15.0% below Gekko Fair Value of $94.29, so the shares are undervalued on Gekko’s estimate.
Gekko’s own estimate of what Mercury Systems shares are worth, recalculated every trading day.
$94.29
Gekko Fair Value, Sep 26, 2026
15.0% Undervalued
No open-market insider purchases were filed for Mercury Systems, and no Congress trades were disclosed, in the last 90 days.
Plus buybacks, unusual options and fund positions, each dated to when it became public.
No open-market insider purchases were filed for MRCY in the last 90 days.
From Form 4 filings, dated to when each was filed.
No trades in MRCY were disclosed by members of Congress in the last 90 days.
From congressional disclosures, which report amounts as ranges.
Mercury Systems has been buying back its own shares.
From company filings.
Mercury Systems reports on Nov 3, 2026, after the close (35 days away), and beat the EPS estimate in 6 of its last 8 reports.
Nov 3, 2026
Expected after the close, 35 days away
| Reported | EPS | Revenue | Move |
|---|---|---|---|
| Aug 10, 2026 | $0.18 est $0.20 | — | +0.5% |
| May 5, 2026 | $0.27 est $0.09 | $235.8M est $208.6M | +16.7% |
| Feb 3, 2026 | $0.16 est $0.07 | $232.9M est $210.5M | −17.9% |
| Nov 4, 2025 | $0.26 est $0.08 | $225.2M est $225.7M | +0.5% |
| Aug 11, 2025 | $0.47 est $0.21 | $211.4M est $214.8M | +28.8% |
| May 6, 2025 | $0.06 est $0.06 | $211.4M est $241.8M | −6.3% |
| Feb 4, 2025 | $0.07 est −$0.04 | $223.1M est $210.6M | +18.8% |
| Nov 5, 2024 | $0.04 est −$0.08 | $204.4M est $181.8M | +27.0% |
“Move” is the close of the first session after the report compared with the close of the last session before it, so it reads the same whether the company reported before the open or after the close.
Analysts’ average 12-month price target for Mercury Systems is $115.70, +44.4% from the last close, from 10 firms rating the stock in the last 90 days.
Each firm’s latest rating in the last 90 days: 10 firms.
| Date | Firm | Target | vs price |
|---|---|---|---|
| Sep 14 | Guggenheim | $115 | +43.5% |
| Sep 1 | J.P. Morgan | $110 | +37.3% |
| Aug 24 | Goldman Sachs | $78 | −2.6% |
| Aug 24 | Robert W. Baird | $130 | +62.3% |
| Aug 20 | Truist Financial | $120 | +49.8% |
Gekko doesn’t publish price predictions. These are analyst targets and historical base rates, which don’t guarantee future results.
Over the next 20 trading days from Sep 29, Mercury Systems averaged +3.0% across the last 5 years, rising in 3 of them.
| Window | Average | Years higher |
|---|---|---|
| Next 5 trading days | +3.8% | 3 of 5 |
| Next 10 trading days | +2.3% | 4 of 5 |
| Next 15 trading days | +3.2% | 4 of 5 |
| Next 20 trading days | +3.0% | 3 of 5 |
| Next 30 trading days | +6.6% | 3 of 5 |
For scale, MRCY’s typical 20-trading-day move in either direction is about 7.9%.
Mercury Systems’s market cap is $4.81B and revenue of $983.6M over the last twelve months.
Coverage of Mercury Systems this week reads neutral: 2 positive, 6 neutral and 5 negative headlines.
Mercury Systems’s 6 largest industry peers by market value, with today’s move, GekkoIndex zone and gap to Gekko Fair Value.
| Stock | GekkoIndex zone | vs Fair Value |
|---|---|---|
| GEGE Aerospace | Accumulation | 0.8% below |
| RTXRTX | Accumulation | 12.0% below |
| BABoeing | Buying | 22.4% below |
| LMTLockheed Martin | Accumulation | 19.7% below |
| HWMHowmet Aerospace | Accumulation | 3.2% below |
| GDGeneral Dynamics | Accumulation | 9.8% below |
A peer links to its own page where one exists.
Mercury Systems’s market cap is $4.81B at the Sep 28, 2026 close of $80.12, with 60.86M shares outstanding.
The consensus analyst 12-month price target for Mercury Systems is $115.70, +44.4% from the last close. Of the 10 firms that rated the stock in the last 90 days, 7 rate it a buy, 2 a hold and 1 a sell. Gekko doesn’t publish price predictions of its own.
On Gekko’s estimate Mercury Systems is undervalued: the Sep 28, 2026 close of $80.12 is 15.0% below Gekko Fair Value of $94.29. Gekko Fair Value is recalculated every trading day, and a gap inside 5% either way counts as about fair value.
Mercury Systems is expected to report on Nov 3, 2026, after the market closes (35 days away). Analysts expect earnings of $0.28 per share on revenue of $245.1M. Mercury Systems beat the earnings estimate in 6 of its last 8 reports, moving 14.6% on average across the report.
Mercury Systems’s 52-week high is $128.45 and its 52-week low is $65.04; it closed at $80.12 on Sep 28, 2026, +9.6% over the past year.
Gekko describes the data; it does not make buy or sell recommendations. On the swing-trade checklist, 4 of the 5 items with data read as supportive (gekkoindex, fair value, earnings risk and seasonality), 1 as mixed (trend). The checklist is a description of current data, not a recommendation.
During US trading hours the price at the top of the page is a delayed quote, refreshed every 15 minutes; everything else is rebuilt after each US market close. The GekkoIndex, Gekko Fair Value and the checklist are Gekko’s own, and the Gekko Brief is written by AI from this page’s data and checked against it before it is published. How Gekko’s data works →
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