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	$48.9K	Sell	400 -1,600	-80%	-$152K	﹤0.01%	4190
2026 Q1	$146K	Sell	2,000 -1,300	-39%	-$113K	﹤0.01%	3511
2025 Q4	$241K	Buy	3,300 +2,700	+450%	+$201K	﹤0.01%	3433
2025 Q3	$46.4K	Buy	+600	New	+$37.3K	﹤0.01%	4021
2024 Q4	–	Sell	-9,800	Closed	-$363K	–	5289
2024 Q3	$363K	Sell	9,800 -15,000	-60%	-$528K	﹤0.01%	3584
2024 Q2	$669K	Buy	24,800 +22,100	+819%	+$645K	﹤0.01%	3243
2024 Q1	$79.7K	Buy	2,700 +1,300	+93%	+$39.2K	﹤0.01%	4502
2023 Q4	$51.2K	Sell	1,400 -1,600	-53%	-$57.8K	﹤0.01%	4288
2023 Q3	$111K	Buy	+3,000	New	+$111K	﹤0.01%	3895
2019 Q4	–	Sell	-700	Closed	-$57K	–	2083
2019 Q3	$57K	Buy	+700	New	+$55.3K	﹤0.01%	1578

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.