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Portolan Capital Management’s Mercury Systems MRCY Stock Holding History

Portolan Capital 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
Q1 		– Sell
-46,348
Closed -$3.38M – 158
2025
Q4 		$3.38M Buy
46,348
+1,484
+3% +$110K 0.18% 120
2025
Q3 		$3.47M Buy
+44,864
New +$2.79M 0.19% 102

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 $5.01B AUM 6.26% 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

Portolan Capital Management's MRCY Position: Q1 2026 in Review

Portolan Capital Management sold out of Mercury Systems (MRCY) in Q1 2026, closing a stake of 46,348 shares — an estimated $3.38M sold.

Portolan Capital Management first reported a position in MRCY in Q3 2025 and held it in 2 quarters. The position peaked at $3.47M in Q3 2025. 356 funds tracked by Wall St. Rank hold MRCY as of Q1 2026.

  • Portolan Capital Management reported no remaining Mercury Systems position as of Q1 2026 after selling out during the quarter.
  • Portolan Capital Management sold 46,348 Mercury Systems shares in Q1 2026, an estimated $3.38M.
  • Portolan Capital Management first reported a position in Mercury Systems in Q3 2025 and held it in 2 quarters.
  • Portolan Capital Management's Mercury Systems position peaked at $3.47M in Q3 2025.
  • 356 funds tracked by Wall St. Rank held Mercury Systems as of Q1 2026.

Based on Portolan Capital Management's 13F filing for Q1 2026, filed 15 May 2026.