Jeff Yass’s Mercury Systems MRCY Stock Holding History

Jeff Yass’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	$4.28M	Sell	35,027 -9,687	-22%	-$923K	﹤0.01%	4931
2026 Q1	$3.26M	Buy	+44,714	New	+$3.89M	﹤0.01%	5106
2025 Q4	–	Sell	-8,668	Closed	-$645K	–	13131
2025 Q3	$671K	Sell	8,668 -60,647	-87%	-$3.77M	﹤0.01%	8302
2025 Q2	$3.73M	Buy	69,315 +5,391	+8%	+$263K	﹤0.01%	4533
2025 Q1	$2.75M	Buy	63,924 +7,718	+14%	+$338K	﹤0.01%	4836
2024 Q4	$2.36M	Buy	56,206 +36,196	+181%	+$1.38M	﹤0.01%	4932
2024 Q3	$740K	Sell	20,010 -29,632	-60%	-$1.04M	﹤0.01%	7524
2024 Q2	$1.34M	Sell	49,642 -43,001	-46%	-$1.25M	﹤0.01%	5912
2024 Q1	$2.73M	Buy	92,643 +75,761	+449%	+$2.28M	﹤0.01%	4690
2023 Q4	$617K	Sell	16,882 -25,736	-60%	-$929K	﹤0.01%	8152
2023 Q3	$1.58M	Sell	42,618 -77,336	-64%	-$2.85M	﹤0.01%	5616
2023 Q2	$4.15M	Buy	119,954 +58,568	+95%	+$2.5M	﹤0.01%	3826
2023 Q1	$3.14M	Buy	61,386 +41,731	+212%	+$2.11M	﹤0.01%	4242
2022 Q4	$879K	Buy	19,655 +2,690	+16%	+$127K	﹤0.01%	6469
2022 Q3	$689K	Buy	+16,965	New	+$889K	﹤0.01%	7608
2022 Q2	–	Sell	-24,484	Closed	-$1.46M	–	13564
2022 Q1	$1.58M	Buy	24,484 +6,968	+40%	+$414K	﹤0.01%	6011
2021 Q4	$964K	Buy	17,516 +8,567	+96%	+$434K	﹤0.01%	7395
2021 Q3	$424K	Sell	8,949 -3,717	-29%	-$207K	﹤0.01%	9801
2021 Q2	$840K	Sell	12,666 -13,117	-51%	-$907K	﹤0.01%	8241
2021 Q1	$1.82M	Buy	25,783 +17,100	+197%	+$1.24M	﹤0.01%	6146
2020 Q4	$765K	Sell	8,683 -21,470	-71%	-$1.63M	﹤0.01%	7322
2020 Q3	$2.34M	Sell	30,153 -4,739	-14%	-$359K	﹤0.01%	4325
2020 Q2	$2.75M	Buy	34,892 +479	+1%	+$39.2K	﹤0.01%	3954
2020 Q1	$2.46M	Sell	34,413 -3,200	-9%	-$242K	﹤0.01%	3613
2019 Q4	$2.6M	Buy	37,613 +13,273	+55%	+$956K	﹤0.01%	3913
2019 Q3	$1.98M	Sell	24,340 -10,788	-31%	-$852K	﹤0.01%	4220
2019 Q2	$2.47M	Buy	+35,128	New	+$2.44M	﹤0.01%	3767
2018 Q4	–	Sell	-11,630	Closed	-$567K	–	9580
2018 Q3	$643K	Sell	11,630 -9,317	-44%	-$451K	﹤0.01%	6081
2018 Q2	$797K	Buy	+20,947	New	+$811K	﹤0.01%	5832
2017 Q3	–	Sell	-23,727	Closed	-$1.09M	–	9325
2017 Q2	$999K	Buy	+23,727	New	+$932K	﹤0.01%	5262
2017 Q1	–	Sell	-47,443	Closed	-$1.69M	–	9585
2016 Q4	$1.43M	Buy	+47,443	New	+$1.35M	﹤0.01%	4769
2015 Q1	–	Sell	-17,682	Closed	-$279K	–	9730
2014 Q4	$246K	Buy	+17,682	New	+$227K	﹤0.01%	8471
2014 Q3	–	Sell	-21,223	Closed	-$240K	–	9735
2014 Q2	$240K	Buy	+21,223	New	+$265K	﹤0.01%	8753

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

Jeff Yass's MRCY Position: Q2 2026 in Review

Jeff Yass reduced its Mercury Systems (MRCY) stake by 22% in Q2 2026, selling an estimated $923K and leaving 35,027 shares worth $4.28M. The position accounts for ﹤0.01% of the portfolio, ranked #4931.

Jeff Yass first reported a position in MRCY in Q2 2014 and has held it in 33 quarters since. 392 funds tracked by Wall St. Rank hold MRCY as of Q2 2026.

Jeff Yass held 35,027 shares of Mercury Systems worth $4.28M as of Q2 2026.
Jeff Yass sold 9,687 Mercury Systems shares in Q2 2026, an estimated $923K.
Mercury Systems made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #4931 holding.
Jeff Yass first reported a position in Mercury Systems in Q2 2014 and has held it in 33 quarters since.
392 funds tracked by Wall St. Rank held Mercury Systems as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.