Held
MRCY · Mercury Systems Inc
Last analysed ·
Against its published line
1 name has closed through its line on this close.
How to read this
The red mark is the published kill line — the price that would prove the pick wrong. The dot is where the name closed on 18 September 2026; a dot LEFT of the mark has closed through its line.
Distance is drawn on a square-root scale, so close calls get the room. Past 8% a row stops competing and reads well clear, with a hollow dot to say the figure is off the drawn scale. Rows run tightest first.
Resolved Graded and closed 2026-07-24 at medium conviction — the published kill line did not fire. Coverage continued after the close; the read below is dated 2026-09-20 and is not part of the scored record.
Current thesis
Defense-electronics turnaround still re-rating on record bookings and a promised FCF turn, but the stock has given back ~20% from its $128.45 ATH and now chops near the analyst median (~$103) into a binary ~Aug 10-18 Q4/full-year print. Consolidation, not acceleration — the move is maturing into the report.
Kill line
A weekly close below $94 loses the breakout base and rising 50-day shelf underpinning the advance. Secondary: a Q4 FY26 print (~2026-08-10 to 08-18) with free cash flow failing to turn positive or book-to-bill under 1.0, or defense-electronics flipping to saturated as KTOS/AVAV break their July lows.
Pick status
Played out resolved published kill line did not fire How this is scored →Latest analysis and events for MRCY —
As of 20 September 2026, the latest FrontierPicks analysis for Mercury Systems Inc (MRCY): Defense-electronics turnaround still re-rating on record bookings and a promised FCF turn, but the stock has given back ~20% from its $128.45 ATH and now chops near the analyst median (~$103) into a binary ~Aug 10-18 Q4/full-year print. Consolidation, not acceleration — the move is maturing into the report.
Kill line: A weekly close below $94 loses the breakout base and rising 50-day shelf underpinning the advance. Secondary: a Q4 FY26 print (~2026-08-10 to 08-18) with free cash flow failing to turn positive or book-to-bill under 1.0, or defense-electronics flipping to saturated as KTOS/AVAV break their July lows.
Next dated event on file: — catalyst in 4d.
Current Thesis
Mercury Systems' reaffirmed outlook supports a tentative recovery toward a weekly close above $90.61, invalidated by a weekly close below $78.47. This is a new recovery hypothesis following the company's 2026-09-16 guidance reaffirmation and the market's 2026-09-14 intraday low of $78.47. Company announcement Historical prices
The previous recovery thesis failed: the 2026-09-11 weekly close of $80.61 breached its published $82.42 condition. The narrative is dead in its earlier breakout form — that dated breach follows the loss of the original $94 threshold recorded in the September 11 dossier. The subsequent rebound does not reverse either outcome. Historical prices
The operating argument remains conversion of record orders into earnings and cash. Mercury reaffirmed prior guidance on 2026-09-16 while extending Chairman and Chief Executive Officer Bill Ballhaus's employment term through 2030-08-15; reaffirmation supplies management's continuing expectation, rather than a new measured operating result. Filed announcement
Bullish and bearish views on Mercury Systems Inc
The model's bull view on Mercury Systems Inc (MRCY), in brief: Orders support the recovery hypothesis. Mercury's 2026-08-18 release reported fiscal fourth-quarter bookings of $660 million, a book-to-bill ratio of 2.28 and backlog above $1.9 billion. Book-to-bill compares orders received with revenue recognized; delivery and profitability… The bear view: Cash generation still trails orders. The 2026-08-18 release reported fiscal 2026 free cash flow of $68 million versus $119 million in fiscal 2025. Free cash flow measures operating cash flow less capital expenditure. Fiscal 2026 results Record bookings therefore coexist with… Both cases follow in full.
Bull Case
- Orders support the recovery hypothesis. Mercury's 2026-08-18 release reported fiscal fourth-quarter bookings of $660 million, a book-to-bill ratio of 2.28 and backlog above $1.9 billion. Book-to-bill compares orders received with revenue recognized; delivery and profitability remain separate tests. Fiscal 2026 results
- Guidance survived the price decline. The 2026-09-16 announcement reaffirmed prior guidance. The inference is that management still supports the operating recovery case; a subsequent guidance reduction would contradict that premise. Filed announcement
- Analyst coverage gained another participant. Stock Analysis records Guggenheim initiating coverage with a $115 price target on 2026-09-14. That is Guggenheim's valuation opinion, not evidence that orders have converted into cash. Analyst-action table
Bear Case
- Cash generation still trails orders. The 2026-08-18 release reported fiscal 2026 free cash flow of $68 million versus $119 million in fiscal 2025. Free cash flow measures operating cash flow less capital expenditure. Fiscal 2026 results
- Record bookings therefore coexist with weaker realized earnings. Fiscal 2026 results
- The prior recovery condition failed. The 2026-09-11 weekly close of $80.61 settled the earlier $82.42 invalidation test. A subsequent rebound cannot be counted as success for that forecast. Historical prices
Setup & Price Structure
The supplied adjusted daily series records a 2026-09-18 close of $85.28, a three-month decline of 23.7% and a close 32.4% below its 52-week high of $126.21. Its 14-day relative strength index (RSI) was 43.0. These are measured observations; they do not establish a durable reversal.
The $90.61 recovery hurdle remains the fixed reference published on 2026-09-08, originally drawn from Stock Analysis's 2026-09-04 snapshot of the 200-day moving average. It is not a current moving-average reading. The new hypothesis uses the observed 2026-09-14 intraday low of $78.47 as its weekly-close failure boundary; this does not replace the failed earlier forecast retrospectively. Historical prices
Positioning evidence has advanced since the prior dossier. That establishes an increase across those observations, but neither its cause nor short exposure during the September rebound. Short-interest history
Catalyst Calendar (next 30 days)
- 2026-09-24 — Short-interest publication. FINRA schedules publication of the 2026-09-15 settlement data. This updates measured short exposure after the August-end observation; it does not resolve operating conversion. FINRA calendar
- 2026-10-09 — Short-interest publication. FINRA schedules publication of the 2026-09-30 settlement data, providing another dated comparison of short exposure. FINRA calendar
Mercury's events page checked on 2026-09-20 lists no upcoming company event. A confirmed earnings date within the next 30 days is therefore missing; neither positioning publication is an earnings catalyst. Company calendar
What Would Change Our Mind
Loss of the September rebound's observed low would break the new recovery hypothesis: a weekly close below $78.47 is the specified condition, using the market's 2026-09-14 intraday low. The case plays out only if a weekly close above the previously published $90.61 recovery hurdle occurs first. September price history
The operating premise would also weaken if Mercury withdrew or reduced the outlook reaffirmed on 2026-09-16. Stronger operating evidence requires subsequent reported results demonstrating conversion; the reaffirmation itself supplies no new revenue or cash-flow measurement. Filed announcement
Correlation Notes
This remains a single-name recovery hypothesis anchored to Mercury's 2026-09-16 reaffirmation and its September price structure. No matched peer-return series accompanies the 2026-09-18 observations, so a defense-sector correlation or incoming group demand cannot be established. The Defense & aerospace tag describes operating exposure, not a measured source of support.
Notes
- Fiscal year ends in early July (FY26 ended 2026-07-03); the August 2026 report covered the June quarter and the full year together.
- FY26 GAAP net loss $29.7M, -$0.50 per diluted share, against adjusted EPS $1.06 — trailing-earnings screens read as undefined.
- Two consensus panels disagree: $115.78 across 10 analysts on stockanalysis.com versus $103.75 across a nine-analyst S&P Global panel, both retrieved 2026-09-04.
- Momentum readings diverge by vendor: RSI(14) 12.0 on the adjusted daily series versus 32.54 on stockanalysis.com, both against the 2026-09-04 close.
- Customer concentration per the FY26 10-K: RTX 15%, Lockheed Martin 11%, Northrop Grumman 10% of FY26 revenue; roughly 97% of revenue is US and allied defense.
- A law-firm fiduciary-duty solicitation circulated around 2026-08-26 is an investigation notice, separate from the $32.5M securities class action already settled.
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