Mercury Systems, Inc. is +4.9% over the past year while the S&P 500 is +18%: 13 points behind the market. 1-year return: +4.9% (S&P 500 +18%). vs 200-day average: −11%, a clear downtrend. RSI (14): 34, neutral. Below its 52-week high: 34%.

MRCYMercury Systems, Inc.

Industrials

$79.48+4.9% 1Y

$79.48

$66.1252 weeks$120.30

What is the market doing?

Mixed

No clear lean: rangebound and insiders net selling (often routine).

3 neutral

TrendRangeboundderived · Oct 9, 2026

Rangebound, no clear trend. Price is −11% vs its 200-day average.

Insider conviction−$41.8M (90 days to Oct 8, 2026)SEC EDGAR · Oct 8, 2026

Insiders were net sellers over the 90 days ending Oct 8, 2026; selling is often routine (taxes, diversification).

Short interest8.5% of sharesFINRA · Sep 15, 2026

Heavily shorted, settled Sep 15, 2026, more than a week of normal trading to cover, a crowded exit.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

1-year returnmiddle of the market

vs 200-day avgbehind 75% of the market

Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.

How MRCY is trading

Mercury Systems, Inc. is +4.9% over the past year while the S&P 500 is +18%: 13 points behind the market.

+4.9%

1-year return · S&P 500 +18%

vs 200-day average: −11%
vs 200-day average · a clear downtrend
RSI (14): 34
RSI (14) · neutral
Below its 52-week high: 34%
Below its 52-week high

Sep 18, 2024$31.83 – $120.30 · dashed line: 200-day averageOct 9, 2026

Details›

Last close2026-10-09: $79.48
1 monthS&P 500 +2.7%: −1.1%
1 yearS&P 500 +18%: +4.9%
5 yearsS&P 500 +88%: +74%
vs 50-day average$91.29: −13%
52-week high: $120.30
52-week low: $66.12
Annualised volatility: 54%
Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08: −$44M

Calendar-year price return
Year	Return
2026 (year to date)	+8.9%
2025	+74%
2024	+15%
2023	−18%
2022	−19%
2021	−37%
2020	+27%
2019	+46%
2018	−7.9%
2017	+70%

Average return by calendar month, 2016–2026
Month	Years	Positive	Average
Jan	10	6 of 10	+4.5%
Feb	10	6 of 10	+1.5%
Mar	10	5 of 10	−0.19%
Apr	10	5 of 10	+0.72%
May	10	6 of 10	+4.5%
Jun	10	6 of 10	−1.6%
Jul	11	6 of 11	+5.2%
Aug	11	6 of 11	+1.4%
Sep	11	5 of 11	−0.49%
Oct	11	4 of 11	−1.6%
Nov	10	6 of 10	+3.6%
Dec	10	6 of 10	+2.3%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.

Aerospace & Defense

Ranks #31 of 36 by RyuScore