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Castleark Management’s Mercury Systems MRCY Stock Holding History

Castleark Management’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 		– Sell
-25,048
Closed -$1.83M – 336
2026
Q1 		$1.83M Sell
25,048
-93,410
-79% -$8.13M 0.06% 202
2025
Q4 		$8.65M Buy
118,458
+16,990
+17% +$1.26M 0.25% 85
2025
Q3 		$7.85M Buy
101,468
+8,668
+9% +$539K 0.22% 93
2025
Q2 		$5M Buy
+92,800
New +$4.52M 0.15% 126
2024
Q1 		– Sell
-73,820
Closed -$2.7M – 303
2023
Q4 		$2.7M Buy
+73,820
New +$2.66M 0.12% 167
2022
Q3 		– Sell
-98,910
Closed -$6.36M – 313
2022
Q2 		$6.36M Buy
98,910
+45,040
+84% +$2.69M 0.34% 59
2022
Q1 		$3.47M Buy
+53,870
New +$3.2M 0.15% 144
2019
Q4 		– Sell
-127,770
Closed -$10.4M – 379
2019
Q3 		$10.4M Buy
+127,770
New +$10.1M 0.42% 77
2018
Q1 		– Sell
-192,186
Closed -$9.87M – 424
2017
Q4 		$9.87M Buy
192,186
+10,480
+6% +$538K 0.3% 117
2017
Q3 		$9.43M Sell
181,706
-74,440
-29% -$3.43M 0.3% 118
2017
Q2 		$10.8M Sell
256,146
-82,950
-24% -$3.26M 0.35% 95
2017
Q1 		$13.2M Buy
339,096
+242
+0.1% +$8.6K 0.42% 72
2016
Q4 		$10.2M Buy
+338,854
New +$9.63M 0.33% 98

Other funds holding MRCY

BlackRock
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
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Goldman Sachs
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

Castleark Management's MRCY Position: Q2 2026 in Review

Castleark Management sold out of Mercury Systems (MRCY) in Q2 2026, closing a stake of 25,048 shares — an estimated $1.83M sold.

Castleark Management first reported a position in MRCY in Q4 2016 and held it in 13 quarters. The position peaked at $13.2M in Q1 2017. 392 funds tracked by Wall St. Rank hold MRCY as of Q2 2026.

  • Castleark Management reported no remaining Mercury Systems position as of Q2 2026 after selling out during the quarter.
  • Castleark Management sold 25,048 Mercury Systems shares in Q2 2026, an estimated $1.83M.
  • Castleark Management first reported a position in Mercury Systems in Q4 2016 and held it in 13 quarters.
  • Castleark Management's Mercury Systems position peaked at $13.2M in Q1 2017.
  • 392 funds tracked by Wall St. Rank held Mercury Systems as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.