Walleye Capital’s Mercury Systems MRCY Stock Holding History

Walleye Capital’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	$257K	Buy	2,100 +900	+75%	+$85.7K	﹤0.01%	3299
2026 Q1	$87.5K	Buy	1,200 +700	+140%	+$61K	﹤0.01%	3719
2025 Q4	$36.5K	Buy	+500	New	+$37.2K	﹤0.01%	4152
2024 Q4	–	Sell	-4,100	Closed	-$152K	–	5287
2024 Q3	$152K	Sell	4,100 -37,700	-90%	-$1.33M	﹤0.01%	4179
2024 Q2	$1.13M	Buy	41,800 +31,700	+314%	+$925K	﹤0.01%	2717
2024 Q1	$298K	Sell	10,100 -4,200	-29%	-$127K	﹤0.01%	3671
2023 Q4	$523K	Buy	14,300 +10,500	+276%	+$379K	﹤0.01%	2912
2023 Q3	$141K	Buy	3,800 +3,700	+3,700%	+$136K	﹤0.01%	3769
2023 Q2	$3.46K	Buy	+100	New	+$4.27K	﹤0.01%	4082
2019 Q4	–	Sell	-4,800	Closed	-$390K	–	2082
2019 Q3	$390K	Sell	4,800 -6,500	-58%	-$514K	0.02%	867
2019 Q2	$795K	Buy	+11,300	New	+$784K	0.09%	339

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

Walleye Capital's MRCY Position: Q2 2026 in Review

Walleye Capital reduced its Mercury Systems (MRCY) stake by 49% in Q2 2026, selling an estimated $104K and leaving 1,144 shares worth $140K. The position accounts for ﹤0.01% of the portfolio, ranked #3705.

Walleye Capital first reported a position in MRCY in Q2 2019 and has held it in 13 quarters since. The position peaked at $935K in Q3 2021. 392 funds tracked by Wall St. Rank hold MRCY as of Q2 2026.

Walleye Capital held 1,144 shares of Mercury Systems worth $140K as of Q2 2026.
Walleye Capital sold 1,096 Mercury Systems shares in Q2 2026, an estimated $104K.
Mercury Systems made up ﹤0.01% of Walleye Capital's portfolio in Q2 2026, its #3705 holding.
Walleye Capital first reported a position in Mercury Systems in Q2 2019 and has held it in 13 quarters since.
Walleye Capital's Mercury Systems position peaked at $935K in Q3 2021.
392 funds tracked by Wall St. Rank held Mercury Systems as of Q2 2026.

Based on Walleye Capital's 13F filing for Q2 2026, filed 3 Aug 2026.