Mercury Systems

US · MRCY #2102 by market cap Listed 1970

79.75 -3.05 -3.68%

Live - 5344 symbols - heartbeat 358s ago · 2026-10-08 07:00

Pre-market 79.25 -0.63%

After-hours 79.75 0.00%

Overnight 79.98 +0.29%

Market cap: 4.85B
P/E (TTM): -159.50
P/B: 3.24
EPS: -0.50
Div yield: 0.00%
52W pos: 23%

Reader sentiment Are you bullish or bearish on MRCY?

Anonymous reader poll. Unscientific, not investment advice.

✦ Quant Ownership Signal how this is computed

Distributing

The number of reporting institutions increased by 1 in the most recent period (2026/Q3).
Total institutional ownership fell 0.2 percentage points.

Institutional ownership

Held by institutions: 110.80% -0.23pp
Institutions: 463 +1
As of: 2026/Q3 vs. prior period

Ownership vs. money flow

Aligned

Institutions trimmed shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two line up.

Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.

Holder types

Mutual Fund95.22%

Hedge Fund8.22%

Public Company4.31%

Government Pension Fund1.21%

Individual/Insider1.06%

Insurance Company0.67%

Private Company0.59%

Family Office/Trust0.36%

VC/PE Fund0.10%

Top holders as of 2026-06-30

BlackRock 15.58% · 9.37M sh

Jana Partners Management, LP 6.58% · 3.96M sh

State Street Global Advisors 5.68% · 3.42M sh

Vanguard Portfolio Management, LLC 5.04% · 3.03M sh

T. Rowe Price Group, Inc. 4.79% · 2.88M sh

Vanguard Capital Management, LLC 4.67% · 2.81M sh

FMR 3.06% · 1.84M sh

Conestoga Capital Advisors, LLC 2.47% · 1.49M sh

Geode Capital Management, LLC 2.43% · 1.46M sh

Invesco Ltd. 2.28% · 1.37M sh

Bar length is relative to the largest holder shown here, not to 100% of the company.

Insiders

50 filings tracked · 10 buys · 40 sells

Name	Role	Stake
William Ballhaus	Chief Executive Officer	0.54%
David Farnsworth	Chief Financial Officer	0.15%
Orlando Carvalho	Independent Director	0.08%
Stuart Kupinsky	Chief Legal Officer	0.08%
Lisa Disbrow	Independent Director	0.05%
Howard Lance	Independent Director	0.04%
Barry Nearhos	Independent Director	0.04%
Steven Ratner	Executive Vice President	0.03%
Gerard DeMuro	Independent Director	0.02%
Debora Plunkett	Independent Director	0.02%

Insider transactions most recent Form 4 filings

Date	Name	Role	Type	Shares	Price
2026-09-20	Stuart Kupinsky	Chief Legal Officer	Automatic Disposition	-1,000	$86.52
2026-09-02	Steven Ratner	Executive Vice President	Open Market Disposition	-4,000	$84.51
2026-08-25	William Ballhaus	Chief Executive Officer	Derivative Exercise and Sale	-160,166	$43.00–89.74
2026-08-25	William Ballhaus	Chief Executive Officer	Derivative Exercise and Retained	+61,986	$43.00
2026-08-25	William Ballhaus	Chief Executive Officer	Intent to Sell (Form 144)	-49,090	$89.10
2026-08-24	William Ballhaus	Chief Executive Officer	Intent to Sell (Form 144)	-111,076	$87.12
2026-08-23	William Ballhaus	Chief Executive Officer	Derivative Exercise and Sale	-173,209	$42.00–93.51
2026-08-23	William Ballhaus	Chief Executive Officer	Derivative Exercise and Retained	+71,639	$42.00
2026-08-23	William Ballhaus	Chief Executive Officer	Intent to Sell (Form 144)	-100,121	$89.44
2026-08-23	William Ballhaus	Chief Executive Officer	Intent to Sell (Form 144)	-8,088	$90.25
2026-08-20	Stuart Kupinsky	Chief Legal Officer	Automatic Disposition	-1,000	$95.23
2026-08-20	William Ballhaus	Chief Executive Officer	Intent to Sell (Form 144)	-65,000	$92.41
2026-08-20	Steven Ratner	Executive Vice President	Open Market Disposition	-356	$91.36
2026-08-19	William Ballhaus	Chief Executive Officer	Open Market Disposition	-48,812	$97.67–100.31
2026-08-19	William Ballhaus	Chief Executive Officer	Intent to Sell (Form 144)	-22,010	$97.67
2026-08-19	David Farnsworth	Chief Financial Officer	Open Market Disposition	-14,767	$97.67–100.31
2026-08-19	David Farnsworth	Chief Financial Officer	Intent to Sell (Form 144)	-6,612	$97.67
2026-08-19	Steven Ratner	Executive Vice President	Open Market Disposition	-3,213	$97.67–100.31
2026-08-19	Steven Ratner	Executive Vice President	Intent to Sell (Form 144)	-1,026	$97.67
2026-08-19	Douglas Munro	Vice President	Open Market Disposition	-657	$97.67–100.31

Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.

Quote time 2026-10-08 07:00:13 · For reference only, not investment advice and not tailored to your situation.