Wellington Management Group
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Wellington Management Group’s Mercury Systems MRCY Stock Holding History

Wellington Management 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 		$55.1M Buy
+755,525
New +$65.8M 0.01% 707
2024
Q3 		– Sell
-46,129
Closed -$1.25M – 1989
2024
Q2 		$1.25M Sell
46,129
-10,681
-19% -$312K ﹤0.01% 1620
2024
Q1 		$1.68M Buy
56,810
+9,907
+21% +$298K ﹤0.01% 1557
2023
Q4 		$1.72M Buy
46,903
+1,251
+3% +$45.2K ﹤0.01% 1520
2023
Q3 		$1.69M Sell
45,652
-2,214,914
-98% -$81.7M ﹤0.01% 1502
2023
Q2 		$78.2M Buy
2,260,566
+18,563
+0.8% +$793K 0.01% 607
2023
Q1 		$115M Sell
2,242,003
-20,610
-0.9% -$1.04M 0.02% 508
2022
Q4 		$101M Buy
2,262,613
+78,226
+4% +$3.7M 0.02% 519
2022
Q3 		$88.7M Sell
2,184,387
-199,480
-8% -$10.5M 0.02% 547
2022
Q2 		$153M Sell
2,383,867
-405,897
-15% -$24.2M 0.03% 441
2022
Q1 		$180M Sell
2,789,764
-66,250
-2% -$3.93M 0.03% 442
2021
Q4 		$157M Buy
2,856,014
+33,841
+1% +$1.71M 0.03% 510
2021
Q3 		$134M Buy
2,822,173
+1,234,915
+78% +$68.6M 0.02% 547
2021
Q2 		$105M Buy
1,587,258
+1,279,469
+416% +$88.4M 0.02% 616
2021
Q1 		$21.7M Buy
307,789
+4,966
+2% +$359K ﹤0.01% 1049
2020
Q4 		$26.7M Sell
302,823
-3,650
-1% -$277K ﹤0.01% 967
2020
Q3 		$23.7M Sell
306,473
-216,967
-41% -$16.5M ﹤0.01% 909
2020
Q2 		$41.2M Sell
523,440
-122,713
-19% -$10M 0.01% 746
2020
Q1 		$46.1M Sell
646,153
-10,180
-2% -$771K 0.01% 661
2019
Q4 		$45.4M Buy
656,333
+32,991
+5% +$2.38M 0.01% 780
2019
Q3 		$50.6M Sell
623,342
-111,890
-15% -$8.84M 0.01% 722
2019
Q2 		$51.7M Buy
735,232
+7,272
+1% +$505K 0.01% 746
2019
Q1 		$46.6M Sell
727,960
-39,891
-5% -$2.3M 0.01% 763
2018
Q4 		$36.3M Sell
767,851
-503,869
-40% -$24.6M 0.01% 814
2018
Q3 		$70.4M Buy
1,271,720
+193,781
+18% +$9.38M 0.01% 691
2018
Q2 		$41M Buy
1,077,939
+946,802
+722% +$36.6M 0.01% 861
2018
Q1 		$6.34M Buy
+131,137
New +$6.25M ﹤0.01% 1410

Other funds holding MRCY

BlackRock
BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 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

Wellington Management Group's MRCY Position: Q1 2026 in Review

Wellington Management Group opened a new position in Mercury Systems (MRCY) in Q1 2026: 755,525 shares worth $55.1M. The stake represents 0.01% of the portfolio and ranks #707 among its holdings. This is a return to the name: Wellington Management Group previously reported a position in MRCY as recently as Q2 2024.

Wellington Management Group first reported a position in MRCY in Q1 2018 and has held it in 27 quarters since. The position peaked at $180M in Q1 2022. 357 funds tracked by Wall St. Rank hold MRCY as of Q1 2026.

  • Wellington Management Group held 755,525 shares of Mercury Systems worth $55.1M as of Q1 2026.
  • Mercury Systems was a new Wellington Management Group position in Q1 2026.
  • Mercury Systems made up 0.01% of Wellington Management Group's portfolio in Q1 2026, its #707 holding.
  • Wellington Management Group first reported a position in Mercury Systems in Q1 2018 and has held it in 27 quarters since.
  • Wellington Management Group's Mercury Systems position peaked at $180M in Q1 2022.
  • 357 funds tracked by Wall St. Rank held Mercury Systems as of Q1 2026.

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