Summit Trail Advisors’s Mercury Systems MRCY Stock Holding History

Summit Trail Advisors’s Portfolio MRCY Stock Details MRCY Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.28M	Sell	10,492 -24,128	-70%	-$2.3M	0.02%	874
2026 Q1	$2.52M	Sell	34,620 -3,385	-9%	-$295K	0.04%	399
2025 Q4	$2.77M	Buy	38,005 +21,802	+135%	+$1.62M	0.05%	262
2025 Q3	$1.25M	Buy	16,203 +5,398	+50%	+$336K	0.02%	705
2025 Q2	$582K	Buy	+10,805	New	+$526K	0.01%	673
2018 Q1	–	Sell	-20	Closed	-$1K	–	1203
2017 Q4	$1K	Buy	+20	New	+$1.03K	﹤0.01%	1826

Other funds holding MRCY

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

JPM

JANA Partners Management New York $1.9B AUM 18.33% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

CCA

Conestoga Capital Advisors Wayne, Pennsylvania $4.6B AUM 16.08% 1-Year Est. Return

Summit Trail Advisors's MRCY Position: Q2 2026 in Review

Summit Trail Advisors reduced its Mercury Systems (MRCY) stake by 70% in Q2 2026, selling an estimated $2.3M and leaving 10,492 shares worth $1.28M. The position accounts for 0.02% of the portfolio, ranked #874.

Summit Trail Advisors first reported a position in MRCY in Q4 2017 and has held it in 6 quarters since. The position peaked at $2.77M in Q4 2025. 393 funds tracked by Wall St. Rank hold MRCY as of Q2 2026.

Summit Trail Advisors held 10,492 shares of Mercury Systems worth $1.28M as of Q2 2026.
Summit Trail Advisors sold 24,128 Mercury Systems shares in Q2 2026, an estimated $2.3M.
Mercury Systems made up 0.02% of Summit Trail Advisors's portfolio in Q2 2026, its #874 holding.
Summit Trail Advisors first reported a position in Mercury Systems in Q4 2017 and has held it in 6 quarters since.
Summit Trail Advisors's Mercury Systems position peaked at $2.77M in Q4 2025.
393 funds tracked by Wall St. Rank held Mercury Systems as of Q2 2026.

Based on Summit Trail Advisors's 13F filing for Q2 2026, filed 11 Aug 2026.