Question 1

How many shares of MRCY does WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC own?

Accepted Answer

As of 2026-Q2, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds 379,732 shares of MRCY (MERCURY SYS INC).

Question 2

What is WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's MRCY position worth?

Accepted Answer

As of 2026-Q2, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's MRCY position is worth $46.5M.

Question 3

Is WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC buying or selling MRCY?

Accepted Answer

In 2026-Q2, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC increased their MRCY position (+16.0% change in shares).

Question 4

When did WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC first buy MRCY?

Accepted Answer

Based on available 13F filings, WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC first reported a position in MRCY in 2018-Q4. They have held the position across 31 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Increased	379,732	+16.0%	$46.5M	0.1%	$122.33	40
2026-Q1	Decreased	327,288	-66.8%	$23.9M	0.1%	$89.43	0
2025-Q4	Decreased	984,273	-60.4%	$71.9M	0.2%	$73.85	0
2025-Q3	Decreased	2.5M	-47.0%	$192.6M	0.5%	$75.28	0
2025-Q2	Decreased	4.7M	-12.6%	$252.9M	0.7%	$53.41	0
2025-Q1	Decreased	5.4M	-16.5%	$231.5M	0.6%	$42.82	0
2024-Q4	Decreased	6.4M	-11.9%	$270.2M	0.7%	$42.00	0
2024-Q3	Increased	7.3M	+13.8%	$270.1M	0.7%	$37.50	49
2024-Q2	Increased	6.4M	+0.6%	$173.2M	0.5%	$26.99	36
2024-Q1	Decreased	6.4M	-2.7%	$188.2M	0.5%	$29.50	0
2023-Q4	Decreased	6.6M	-2.9%	$239.8M	0.7%	$36.57	0
2023-Q3	Increased	6.7M	+25.6%	$250.3M	0.8%	$37.09	53
2023-Q2	Increased	5.4M	+0.5%	$185.8M	0.6%	$34.13	43
2023-Q1	Increased	5.3M	+2.7%	$273.4M	1.0%	$51.71	45
2022-Q4	Decreased	5.2M	-1.1%	$232.9M	0.9%	$44.74	0
2022-Q3	Increased	5.3M	+17.7%	$213.7M	0.8%	$41.71	50
2022-Q2	Decreased	4.5M	-2.9%	$287.8M	1.1%	$61.03	0
2022-Q1	Increased	4.6M	+38.9%	$296.9M	0.9%	$65.84	57
2021-Q4	Decreased	3.3M	-0.9%	$182.7M	0.5%	$55.21	0
2021-Q3	Decreased	3.3M	-1.1%	$158.8M	0.4%	$47.29	0
2021-Q2	Increased	3.4M	+3.6%	$224.4M	0.7%	$66.14	45
2021-Q1	Increased	3.3M	+0.6%	$230.9M	0.7%	$68.85	43
2020-Q4	Increased	3.2M	+17.7%	$286.2M	1.0%	$87.68	51
2020-Q3	Increased	2.8M	+31.2%	$213.9M	0.8%	$78.59	55
2020-Q2	Decreased	2.1M	-2.1%	$165.6M	0.7%	$78.04	0
2020-Q1	Increased	2.2M	+715.1%	$153.4M	0.7%	$74.23	69
2019-Q4	Increased	263,845	+30.6%	$18.2M	0.1%	$69.83	36
2019-Q3	Decreased	202,010	-21.5%	$16.4M	0.1%	$81.11	0
2019-Q2	Decreased	257,436	-1.9%	$18.1M	0.1%	$70.35	0
2019-Q1	Increased	262,381	+8.7%	$16.8M	0.1%	$64.08	31
2018-Q4	New	241,457	-	$11.4M	0.1%	$46.28	39

MRCY31 quarters

MRCY
31 quarters