Janus Henderson Group
MRCY icon

Janus Henderson Group’s Mercury Systems MRCY Stock Holding History

Janus Henderson Group’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 		$1.71M Hold
23,484
– – ﹤0.01% 1426
2025
Q4 		$1.72M Buy
23,484
+3,059
+15% +$228K ﹤0.01% 1414
2025
Q3 		$1.58M Hold
20,425
– – ﹤0.01% 1433
2025
Q2 		$1.1M Sell
20,425
-3,600
-15% -$175K ﹤0.01% 1568
2025
Q1 		$1.03M Hold
24,025
– – ﹤0.01% 1608
2024
Q4 		$1.01M Hold
24,025
– – ﹤0.01% 1680
2024
Q3 		$889K Hold
24,025
– – ﹤0.01% 1733
2024
Q2 		$649K Sell
24,025
-296
-1% -$8.63K ﹤0.01% 1857
2024
Q1 		$717K Buy
24,321
+1
+0% +$30 ﹤0.01% 1825
2023
Q4 		$889K Sell
24,320
-44
-0.2% -$1.59K ﹤0.01% 1686
2023
Q3 		$904K Buy
24,364
+4
+0% +$148 ﹤0.01% 1603
2023
Q2 		$842K Sell
24,360
-30
-0.1% -$1.28K ﹤0.01% 1691
2023
Q1 		$1.25M Buy
24,390
+14,946
+158% +$755K ﹤0.01% 1504
2022
Q4 		$422K Hold
9,444
– – ﹤0.01% 1798
2022
Q3 		$384K Buy
9,444
+21
+0.2% +$1.1K ﹤0.01% 2075
2022
Q2 		$607K Sell
9,423
-1,975
-17% -$118K ﹤0.01% 1628
2022
Q1 		$735K Sell
11,398
-28,924
-72% -$1.72M ﹤0.01% 1676
2021
Q4 		$2.22M Sell
40,322
-1,294,718
-97% -$65.6M ﹤0.01% 1240
2021
Q3 		$63.3M Buy
1,335,040
+310,578
+30% +$17.3M 0.03% 485
2021
Q2 		$67.9M Buy
+1,024,462
New +$70.8M 0.03% 480

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

Janus Henderson Group's MRCY Position: Q1 2026 in Review

Janus Henderson Group held its Mercury Systems (MRCY) position steady in Q1 2026 at 23,484 shares worth $1.71M. The position accounts for ﹤0.01% of the portfolio, ranked #1426.

Janus Henderson Group first reported a position in MRCY in Q2 2021 and has held it in 20 quarters since. The position peaked at $67.9M in Q2 2021. 356 funds tracked by Wall St. Rank hold MRCY as of Q1 2026.

  • Janus Henderson Group held 23,484 shares of Mercury Systems worth $1.71M as of Q1 2026.
  • Janus Henderson Group left its Mercury Systems share count unchanged in Q1 2026.
  • Mercury Systems made up ﹤0.01% of Janus Henderson Group's portfolio in Q1 2026, its #1426 holding.
  • Janus Henderson Group first reported a position in Mercury Systems in Q2 2021 and has held it in 20 quarters since.
  • Janus Henderson Group's Mercury Systems position peaked at $67.9M in Q2 2021.
  • 356 funds tracked by Wall St. Rank held Mercury Systems as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.