Walleye Trading
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Walleye Trading’s Mercury Systems MRCY Stock Holding History

Walleye 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 		$146K Sell
2,000
-2,000
-50% -$174K ﹤0.01% 3287
2025
Q4 		$292K Buy
4,000
+600
+18% +$44.6K ﹤0.01% 3178
2025
Q3 		$263K Sell
3,400
-400
-11% -$24.9K ﹤0.01% 3186
2025
Q2 		$205K Buy
+3,800
New +$185K ﹤0.01% 3224
2024
Q3 		– Sell
-9,000
Closed -$243K – 4415
2024
Q2 		$243K Sell
9,000
-5,000
-36% -$146K ﹤0.01% 2969
2024
Q1 		$413K Sell
14,000
-17,500
-56% -$527K ﹤0.01% 2925
2023
Q4 		$1.15M Buy
31,500
+16,000
+103% +$578K ﹤0.01% 2352
2023
Q3 		$575K Buy
+15,500
New +$572K ﹤0.01% 2841
2023
Q2 		– Sell
-3,400
Closed -$174K – 4992
2023
Q1 		$174K Buy
+3,400
New +$172K ﹤0.01% 3600
2022
Q3 		– Sell
-2,300
Closed -$148K – 5336
2022
Q2 		$148K Buy
2,300
+100
+5% +$5.97K ﹤0.01% 3921
2022
Q1 		$142K Buy
+2,200
New +$131K ﹤0.01% 4049
2021
Q4 		– Sell
-6,400
Closed -$303K – 5669
2021
Q3 		$303K Sell
6,400
-3,500
-35% -$195K ﹤0.01% 3446
2021
Q2 		$656K Buy
9,900
+3,900
+65% +$270K ﹤0.01% 2600
2021
Q1 		$424K Buy
6,000
+5,800
+2,900% +$419K ﹤0.01% 2832
2020
Q4 		$18K Sell
200
-4,300
-96% -$327K ﹤0.01% 4390
2020
Q3 		$349K Buy
4,500
+4,400
+4,400% +$334K ﹤0.01% 2551
2020
Q2 		$8K Buy
+100
New +$8.19K ﹤0.01% 4093
2019
Q4 		– Sell
-2,900
Closed -$235K – 4456
2019
Q3 		$235K Buy
2,900
+2,700
+1,350% +$213K ﹤0.01% 2810
2019
Q2 		$14K Hold
200
– – ﹤0.01% 3791
2019
Q1 		$13K Sell
200
-8,200
-98% -$473K ﹤0.01% 3960
2018
Q4 		$397K Sell
8,400
-20,600
-71% -$1M ﹤0.01% 2718
2018
Q3 		$1.6M Sell
29,000
-24,200
-45% -$1.17M 0.01% 1577
2018
Q2 		$2.02M Buy
+53,200
New +$2.06M 0.01% 1335

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

Walleye Trading's MRCY Position: Q1 2026 in Review

Walleye Trading opened a new position in Mercury Systems (MRCY) in Q1 2026: 635 shares worth $46.3K. The stake represents ﹤0.01% of the portfolio and ranks #3703 among its holdings. This is a return to the name: Walleye Trading previously reported a position in MRCY as recently as Q3 2025.

Walleye Trading first reported a position in MRCY in Q2 2015 and has held it in 16 quarters since. The position peaked at $638K in Q4 2023. 356 funds tracked by Wall St. Rank hold MRCY as of Q1 2026.

  • Walleye Trading held 635 shares of Mercury Systems worth $46.3K as of Q1 2026.
  • Mercury Systems was a new Walleye Trading position in Q1 2026.
  • Mercury Systems made up ﹤0.01% of Walleye Trading's portfolio in Q1 2026, its #3703 holding.
  • Walleye Trading first reported a position in Mercury Systems in Q2 2015 and has held it in 16 quarters since.
  • Walleye Trading's Mercury Systems position peaked at $638K in Q4 2023.
  • 356 funds tracked by Wall St. Rank held Mercury Systems as of Q1 2026.

Based on Walleye Trading's 13F filing for Q1 2026, filed 11 May 2026.