American Century Companies’s Mercury Systems MRCY Stock Holding History

American Century Companies’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	$42.5M	Buy	582,895 +343,963	+144%	+$30M	0.02%	825
2025 Q4	$17.4M	Buy	238,932 +233,013	+3,937%	+$17.3M	0.01%	1231
2025 Q3	$458K	Sell	5,919 -7,028	-54%	-$437K	﹤0.01%	2531
2025 Q2	$697K	Sell	12,947 -49,935	-79%	-$2.43M	﹤0.01%	2418
2025 Q1	$2.71M	Buy	62,882 +52,816	+525%	+$2.31M	﹤0.01%	1868
2024 Q4	$423K	Sell	10,066 -21,457	-68%	-$818K	﹤0.01%	2557
2024 Q3	$1.17M	Buy	31,523 +13,409	+74%	+$472K	﹤0.01%	2181
2024 Q2	$489K	Buy	18,114 +10,381	+134%	+$303K	﹤0.01%	2450
2024 Q1	$228K	Sell	7,733 -552,245	-99%	-$16.6M	﹤0.01%	2734
2023 Q4	$20.5M	Buy	559,978 +67,199	+14%	+$2.43M	0.01%	862
2023 Q3	$18.3M	Buy	492,779 +17,522	+4%	+$646K	0.01%	837
2023 Q2	$16.4M	Buy	475,257 +33,013	+7%	+$1.41M	0.01%	852
2023 Q1	$22.5M	Sell	442,244 -123,514	-22%	-$6.24M	0.02%	696
2022 Q4	$25.3M	Buy	565,758 +165,737	+41%	+$7.84M	0.02%	640
2022 Q3	$16.2M	Buy	400,021 +131,481	+49%	+$6.89M	0.01%	720
2022 Q2	$17.3M	Buy	268,540 +17,936	+7%	+$1.07M	0.01%	727
2022 Q1	$16.2M	Sell	250,604 -102,785	-29%	-$6.1M	0.01%	756
2021 Q4	$19.5M	Buy	353,389 +16,042	+5%	+$812K	0.01%	706
2021 Q3	$16M	Sell	337,347 -129,992	-28%	-$7.22M	0.01%	731
2021 Q2	$31M	Sell	467,339 -173,449	-27%	-$12M	0.02%	581
2021 Q1	$45.3M	Buy	640,788 +226,224	+55%	+$16.3M	0.03%	459
2020 Q4	$36.5M	Sell	414,564 -189,044	-31%	-$14.4M	0.03%	469
2020 Q3	$46.8M	Sell	603,608 -145,189	-19%	-$11M	0.04%	362
2020 Q2	$58.9M	Buy	748,797 +617,189	+469%	+$50.5M	0.06%	311
2020 Q1	$9.39M	Sell	131,608 -28,790	-18%	-$2.18M	0.01%	616
2019 Q4	$11.1M	Sell	160,398 -52,935	-25%	-$3.81M	0.01%	658
2019 Q3	$17.3M	Sell	213,333 -47,180	-18%	-$3.73M	0.02%	515
2019 Q2	$18.3M	Buy	260,513 +191,950	+280%	+$13.3M	0.02%	519
2019 Q1	$4.39M	Sell	68,563 -118,187	-63%	-$6.81M	﹤0.01%	845
2018 Q4	$8.83M	Sell	186,750 -1,709	-0.9%	-$83.3K	0.01%	632
2018 Q3	$10.4M	Sell	188,459 -59,013	-24%	-$2.86M	0.01%	636
2018 Q2	$9.42M	Buy	247,472 +67,275	+37%	+$2.6M	0.01%	663
2018 Q1	$8.71M	Buy	180,197 +69,284	+62%	+$3.3M	0.01%	676
2017 Q4	$5.7M	Sell	110,913 -38,561	-26%	-$1.98M	0.01%	817
2017 Q3	$7.75M	Sell	149,474 -22,036	-13%	-$1.02M	0.01%	724
2017 Q2	$7.22M	Sell	171,510 -22,890	-12%	-$900K	0.01%	759
2017 Q1	$7.59M	Sell	194,400 -12,944	-6%	-$460K	0.01%	754
2016 Q4	$6.27M	Sell	207,344 -17,321	-8%	-$492K	0.01%	796
2016 Q3	$5.52M	Buy	224,665 +83,475	+59%	+$2M	0.01%	840
2016 Q2	$3.51M	Sell	141,190 -27,334	-16%	-$588K	﹤0.01%	929
2016 Q1	$3.42M	Buy	168,524 +36,397	+28%	+$636K	﹤0.01%	906
2015 Q4	$2.43M	Sell	132,127 -59,387	-31%	-$1.08M	﹤0.01%	995
2015 Q3	$3.05M	Sell	191,514 -84,879	-31%	-$1.29M	﹤0.01%	958
2015 Q2	$4.05M	Buy	276,393 +8,114	+3%	+$118K	﹤0.01%	907
2015 Q1	$4.17M	Buy	+268,279	New	+$4.23M	﹤0.01%	900

Other funds holding MRCY

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 Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

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 Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

American Century Companies's MRCY Position: Q1 2026 in Review

American Century Companies increased its Mercury Systems (MRCY) stake by 144% in Q1 2026, buying an estimated $30M and bringing the position to 582,895 shares worth $42.5M. The position accounts for 0.02% of the portfolio, ranked #825.

American Century Companies first reported a position in MRCY in Q1 2015 and has held it in 45 quarters since. The position peaked at $58.9M in Q2 2020. 356 funds tracked by Wall St. Rank hold MRCY as of Q1 2026.

American Century Companies held 582,895 shares of Mercury Systems worth $42.5M as of Q1 2026.
American Century Companies bought 343,963 Mercury Systems shares in Q1 2026, an estimated $30M.
Mercury Systems made up 0.02% of American Century Companies's portfolio in Q1 2026, its #825 holding.
American Century Companies first reported a position in Mercury Systems in Q1 2015 and has held it in 45 quarters since.
American Century Companies's Mercury Systems position peaked at $58.9M in Q2 2020.
356 funds tracked by Wall St. Rank held Mercury Systems as of Q1 2026.

Based on American Century Companies's 13F filing for Q1 2026, filed 15 May 2026.