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Magnetar Financial’s Mercury Systems MRCY Stock Holding History

Magnetar Financial’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 		$226K Buy
+1,848
New +$176K ﹤0.01% 898
2021
Q2 		– Sell
-22,265
Closed -$1.57M – 1310
2021
Q1 		$1.57M Buy
+22,265
New +$1.61M 0.02% 610

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

Magnetar Financial's MRCY Position: Q2 2026 in Review

Magnetar Financial opened a new position in Mercury Systems (MRCY) in Q2 2026: 1,848 shares worth $226K. The stake represents ﹤0.01% of the portfolio and ranks #898 among its holdings. This is a return to the name: Magnetar Financial previously reported a position in MRCY as recently as Q1 2021.

Magnetar Financial first reported a position in MRCY in Q1 2021 and has held it in 2 quarters since. The position peaked at $1.57M in Q1 2021. 393 funds tracked by Wall St. Rank hold MRCY as of Q2 2026.

  • Magnetar Financial held 1,848 shares of Mercury Systems worth $226K as of Q2 2026.
  • Mercury Systems was a new Magnetar Financial position in Q2 2026.
  • Mercury Systems made up ﹤0.01% of Magnetar Financial's portfolio in Q2 2026, its #898 holding.
  • Magnetar Financial first reported a position in Mercury Systems in Q1 2021 and has held it in 2 quarters since.
  • Magnetar Financial's Mercury Systems position peaked at $1.57M in Q1 2021.
  • 393 funds tracked by Wall St. Rank held Mercury Systems as of Q2 2026.

Based on Magnetar Financial's 13F filing for Q2 2026, filed 14 Aug 2026.