Group One Trading
MRCY icon

Group One Trading’s Mercury Systems MRCY Stock Holding History

Group One Trading’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
Q1 		$22.1K Buy
+303
New +$26.4K ﹤0.01% 5899
2025
Q3 		– Sell
-10,247
Closed -$637K – 8857
2025
Q2 		$552K Buy
10,247
+8,454
+472% +$412K ﹤0.01% 3309
2025
Q1 		$77.3K Sell
1,793
-11,063
-86% -$485K ﹤0.01% 4807
2024
Q4 		$540K Buy
12,856
+12,265
+2,075% +$468K ﹤0.01% 3102
2024
Q3 		$21.9K Sell
591
-299
-34% -$10.5K ﹤0.01% 5181
2024
Q2 		$24K Buy
+890
New +$26K ﹤0.01% 5089
2023
Q3 		– Sell
-2,834
Closed -$105K – 8041
2023
Q2 		$98K Buy
+2,834
New +$121K ﹤0.01% 4643
2023
Q1 		– Sell
-54
Closed -$2.73K – 7664
2022
Q4 		$2.42K Sell
54
-446
-89% -$21.1K ﹤0.01% 6598
2022
Q3 		$20K Sell
500
-2,688
-84% -$141K ﹤0.01% 6077
2022
Q2 		$205K Sell
3,188
-2,326
-42% -$139K ﹤0.01% 4285
2022
Q1 		$355K Sell
5,514
-12,324
-69% -$732K ﹤0.01% 4208
2021
Q4 		$982K Buy
17,838
+14,448
+426% +$732K ﹤0.01% 3376
2021
Q3 		$161K Sell
3,390
-1,165
-26% -$64.7K ﹤0.01% 5395
2021
Q2 		$302K Buy
+4,555
New +$315K ﹤0.01% 4779
2021
Q1 		– Sell
-6,768
Closed -$489K – 7858
2020
Q4 		$596K Buy
6,768
+4,500
+198% +$342K ﹤0.01% 3122
2020
Q3 		$176K Sell
2,268
-200
-8% -$15.2K ﹤0.01% 3751
2020
Q2 		$194K Sell
2,468
-100
-4% -$8.19K ﹤0.01% 3402
2020
Q1 		$183K Buy
2,568
+2,098
+446% +$159K ﹤0.01% 2826
2019
Q4 		$32K Buy
+470
New +$33.9K ﹤0.01% 4196
2019
Q3 		– Sell
-440
Closed -$34.8K – 5395
2019
Q2 		$31K Buy
+440
New +$30.5K ﹤0.01% 4004
2018
Q1 		– Sell
-169
Closed -$8.06K – 5128
2017
Q4 		$9K Sell
169
-7,000
-98% -$359K ﹤0.01% 4407
2017
Q3 		$372K Buy
7,169
+1,569
+28% +$72.3K ﹤0.01% 2311
2017
Q2 		$236K Buy
5,600
+2,300
+70% +$90.4K ﹤0.01% 2529
2017
Q1 		$129K Buy
3,300
+2,300
+230% +$81.8K ﹤0.01% 2816
2016
Q4 		$30K Buy
+1,000
New +$28.4K ﹤0.01% 3529
2016
Q3 		– Sell
-1,000
Closed -$25K – 4762
2016
Q2 		$25K Hold
1,000
– – ﹤0.01% 3695
2016
Q1 		$20K Buy
+1,000
New +$17.5K ﹤0.01% 3744
2015
Q4 		– Sell
-1,500
Closed -$24K – 4946
2015
Q3 		$24K Sell
1,500
-838
-36% -$12.7K ﹤0.01% 3951
2015
Q2 		$34K Buy
2,338
+2,100
+882% +$30.5K ﹤0.01% 3767
2015
Q1 		$4K Sell
238
-220
-48% -$3.47K ﹤0.01% 4421
2014
Q4 		$6K Sell
458
-600
-57% -$7.69K ﹤0.01% 4408
2014
Q3 		$12K Sell
1,058
-1,000
-49% -$11.2K ﹤0.01% 4382
2014
Q2 		$23K Buy
2,058
+558
+37% +$6.97K ﹤0.01% 4071
2014
Q1 		$20K Buy
+1,500
New +$17K ﹤0.01% 4240

Other funds holding MRCY

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
JPM
JANA Partners Management New York $1.67B AUM 1.66% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
CCA
Conestoga Capital Advisors Wayne, Pennsylvania $4.6B AUM 16.08% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Group One Trading's MRCY Position: Q1 2026 in Review

Group One Trading opened a new position in Mercury Systems (MRCY) in Q1 2026: 303 shares worth $22.1K. The stake represents ﹤0.01% of the portfolio and ranks #5899 among its holdings. This is a return to the name: Group One Trading previously reported a position in MRCY as recently as Q2 2025.

Group One Trading first reported a position in MRCY in Q1 2014 and has held it in 34 quarters since. The position peaked at $982K in Q4 2021. 357 funds tracked by Wall St. Rank hold MRCY as of Q1 2026.

  • Group One Trading held 303 shares of Mercury Systems worth $22.1K as of Q1 2026.
  • Mercury Systems was a new Group One Trading position in Q1 2026.
  • Mercury Systems made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #5899 holding.
  • Group One Trading first reported a position in Mercury Systems in Q1 2014 and has held it in 34 quarters since.
  • Group One Trading's Mercury Systems position peaked at $982K in Q4 2021.
  • 357 funds tracked by Wall St. Rank held Mercury Systems as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.